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Oddly placed unused decls for fma() and the gamma funcs.
[perl5.git] / ext / POSIX / POSIX.xs
CommitLineData
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1#define PERL_EXT_POSIX
2
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3#ifdef NETWARE
4 #define _POSIX_
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5 /*
6 * Ideally this should be somewhere down in the includes
7 * but putting it in other places is giving compiler errors.
8 * Also here I am unable to check for HAS_UNAME since it wouldn't have
9 * yet come into the file at this stage - sgp 18th Oct 2000
10 */
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11 #include <sys/utsname.h>
12#endif /* NETWARE */
13
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14#define PERL_NO_GET_CONTEXT
15
463ee0b2 16#include "EXTERN.h"
760ac839 17#define PERLIO_NOT_STDIO 1
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18#include "perl.h"
19#include "XSUB.h"
acfe0abc 20#if defined(PERL_IMPLICIT_SYS)
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21# undef signal
22# undef open
cd661bb6 23# undef setmode
35ff7856 24# define open PerlLIO_open3
873ef191 25#endif
2304df62 26#include <ctype.h>
a0d0e21e 27#ifdef I_DIRENT /* XXX maybe better to just rely on perl.h? */
2304df62 28#include <dirent.h>
a0d0e21e 29#endif
2304df62 30#include <errno.h>
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31#ifdef WIN32
32#include <sys/errno2.h>
33#endif
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34#ifdef I_FLOAT
35#include <float.h>
36#endif
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37#ifdef I_FENV
38#include <fenv.h>
39#endif
a0d0e21e 40#ifdef I_LIMITS
2304df62 41#include <limits.h>
a0d0e21e 42#endif
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43#include <locale.h>
44#include <math.h>
85e6fe83 45#ifdef I_PWD
2304df62 46#include <pwd.h>
85e6fe83 47#endif
2304df62
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48#include <setjmp.h>
49#include <signal.h>
2304df62 50#include <stdarg.h>
17c3b450 51
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52#ifdef I_STDDEF
53#include <stddef.h>
54#endif
6990d991 55
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56#ifdef I_UNISTD
57#include <unistd.h>
58#endif
59
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60#if defined(USE_QUADMATH) && defined(I_QUADMATH)
61
62# undef M_E
63# undef M_LOG2E
64# undef M_LOG10E
65# undef M_LN2
66# undef M_LN10
67# undef M_PI
68# undef M_PI_2
69# undef M_PI_4
70# undef M_1_PI
71# undef M_2_PI
72# undef M_2_SQRTPI
73# undef M_SQRT2
74# undef M_SQRT1_2
75
76# define M_E M_Eq
77# define M_LOG2E M_LOG2Eq
78# define M_LOG10E M_LOG10Eq
79# define M_LN2 M_LN2q
80# define M_LN10 M_LN10q
81# define M_PI M_PIq
82# define M_PI_2 M_PI_2q
83# define M_PI_4 M_PI_4q
84# define M_1_PI M_1_PIq
85# define M_2_PI M_2_PIq
86# define M_2_SQRTPI M_2_SQRTPIq
87# define M_SQRT2 M_SQRT2q
88# define M_SQRT1_2 M_SQRT1_2q
89
90#else
91
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92# ifdef USE_LONG_DOUBLE
93# undef M_E
94# undef M_LOG2E
95# undef M_LOG10E
96# undef M_LN2
97# undef M_LN10
98# undef M_PI
99# undef M_PI_2
100# undef M_PI_4
101# undef M_1_PI
102# undef M_2_PI
103# undef M_2_SQRTPI
104# undef M_SQRT2
105# undef M_SQRT1_2
106# define FLOAT_C(c) CAT2(c,L)
107# else
108# define FLOAT_C(c) (c)
109# endif
110
05b4a618 111# ifndef M_E
19035550 112# define M_E FLOAT_C(2.71828182845904523536028747135266250)
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113# endif
114# ifndef M_LOG2E
19035550 115# define M_LOG2E FLOAT_C(1.44269504088896340735992468100189214)
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116# endif
117# ifndef M_LOG10E
19035550 118# define M_LOG10E FLOAT_C(0.434294481903251827651128918916605082)
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119# endif
120# ifndef M_LN2
19035550 121# define M_LN2 FLOAT_C(0.693147180559945309417232121458176568)
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122# endif
123# ifndef M_LN10
19035550 124# define M_LN10 FLOAT_C(2.30258509299404568401799145468436421)
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125# endif
126# ifndef M_PI
19035550 127# define M_PI FLOAT_C(3.14159265358979323846264338327950288)
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128# endif
129# ifndef M_PI_2
19035550 130# define M_PI_2 FLOAT_C(1.57079632679489661923132169163975144)
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131# endif
132# ifndef M_PI_4
19035550 133# define M_PI_4 FLOAT_C(0.785398163397448309615660845819875721)
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134# endif
135# ifndef M_1_PI
19035550 136# define M_1_PI FLOAT_C(0.318309886183790671537767526745028724)
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137# endif
138# ifndef M_2_PI
19035550 139# define M_2_PI FLOAT_C(0.636619772367581343075535053490057448)
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140# endif
141# ifndef M_2_SQRTPI
19035550 142# define M_2_SQRTPI FLOAT_C(1.12837916709551257389615890312154517)
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143# endif
144# ifndef M_SQRT2
19035550 145# define M_SQRT2 FLOAT_C(1.41421356237309504880168872420969808)
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146# endif
147# ifndef M_SQRT1_2
19035550 148# define M_SQRT1_2 FLOAT_C(0.707106781186547524400844362104849039)
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149# endif
150
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151#endif
152
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153#if !defined(INFINITY) && defined(NV_INF)
154# define INFINITY NV_INF
155#endif
156
157#if !defined(NAN) && defined(NV_NAN)
158# define NAN NV_NAN
159#endif
160
161#if !defined(Inf) && defined(NV_INF)
162# define Inf NV_INF
163#endif
164
165#if !defined(NaN) && defined(NV_NAN)
166# define NaN NV_NAN
167#endif
168
935e3c48 169/* We will have an emulation. */
3f8e6f93 170#ifndef FP_INFINITE
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171# define FP_INFINITE 0
172# define FP_NAN 1
173# define FP_NORMAL 2
174# define FP_SUBNORMAL 3
175# define FP_ZERO 4
176#endif
177
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178/* We will have an emulation. */
179#ifndef FE_TONEAREST
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180# define FE_TOWARDZERO 0
181# define FE_TONEAREST 1
182# define FE_UPWARD 2
183# define FE_DOWNWARD 3
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184#endif
185
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186/* C89 math.h:
187
188 acos asin atan atan2 ceil cos cosh exp fabs floor fmod frexp ldexp
189 log log10 modf pow sin sinh sqrt tan tanh
190
191 * Implemented in core:
192
193 atan2 cos exp log pow sin sqrt
194
9d233e12 195 * C99 math.h added:
7965edec 196
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197 acosh asinh atanh cbrt copysign erf erfc exp2 expm1 fdim fma fmax
198 fmin fpclassify hypot ilogb isfinite isgreater isgreaterequal isinf
199 isless islessequal islessgreater isnan isnormal isunordered lgamma
9e010b89 200 log1p log2 logb lrint lround nan nearbyint nextafter nexttoward remainder
9d233e12 201 remquo rint round scalbn signbit tgamma trunc
7965edec 202
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203 See:
204 http://pubs.opengroup.org/onlinepubs/009695399/basedefs/math.h.html
205
26e0f0d3 206 * Berkeley/SVID extensions:
7965edec 207
26e0f0d3 208 j0 j1 jn y0 y1 yn
7965edec 209
427d28ce 210 * Configure already (5.21.5) scans for:
d2bce0fd 211
427d28ce 212 copysign*l* fpclassify isfinite isinf isnan isnan*l* ilogb*l* signbit scalbn*l*
d2bce0fd 213
26e0f0d3 214 * For floating-point round mode (which matters for e.g. lrint and rint)
9d233e12 215
26e0f0d3 216 fegetround fesetround
9d233e12 217
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218*/
219
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220/* XXX Constant FP_FAST_FMA (if true, FMA is faster) */
221
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222/* XXX Add ldiv(), lldiv()? It's C99, but from stdlib.h, not math.h */
223
39b5f1c4 224/* XXX Beware old gamma() -- one cannot know whether that is the
d334ccbe 225 * gamma or the log of gamma, that's why the new tgamma and lgamma.
2e9cdb62 226 * Though also remember lgamma_r. */
39b5f1c4 227
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228/* Certain AIX releases have the C99 math, but not in long double.
229 * The <math.h> has them, e.g. __expl128, but no library has them!
78c93c95 230 *
42f1389c 231 * Also see the comments in hints/aix.sh about long doubles. */
e0972548 232
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233#if defined(USE_QUADMATH) && defined(I_QUADMATH)
234# define c99_acosh acoshq
235# define c99_asinh asinhq
236# define c99_atanh atanhq
237# define c99_cbrt cbrtq
238# define c99_copysign copysignq
239# define c99_erf erfq
240# define c99_erfc erfcq
05b4a618 241/* no exp2q */
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242# define c99_expm1 expm1q
243# define c99_fdim fdimq
244# define c99_fma fmaq
245# define c99_fmax fmaxq
246# define c99_fmin fminq
247# define c99_hypot hypotq
248# define c99_ilogb ilogbq
249# define c99_lgamma lgammaq
250# define c99_log1p log1pq
251# define c99_log2 log2q
05b4a618 252/* no logbq */
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253# if defined(USE_64_BIT_INT) && QUADKIND == QUAD_IS_LONG_LONG
254# define c99_lrint llrintq
255# define c99_lround llroundq
256# else
257# define c99_lrint lrintq
258# define c99_lround lroundq
259# endif
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260# define c99_nan nanq
261# define c99_nearbyint nearbyintq
262# define c99_nextafter nextafterq
05b4a618 263/* no nexttowardq */
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264# define c99_remainder remainderq
265# define c99_remquo remquoq
266# define c99_rint rintq
267# define c99_round roundq
268# define c99_scalbn scalbnq
269# define c99_signbit signbitq
270# define c99_tgamma tgammaq
271# define c99_trunc truncq
272# define bessel_j0 j0q
273# define bessel_j1 j1q
274# define bessel_jn jnq
275# define bessel_y0 y0q
276# define bessel_y1 y1q
277# define bessel_yn ynq
278#elif defined(USE_LONG_DOUBLE) && \
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279 (defined(HAS_FREXPL) || defined(HAS_ILOGBL)) && defined(HAS_SQRTL)
280/* Use some of the Configure scans for long double math functions
281 * as the canary for all the C99 *l variants being defined. */
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282# define c99_acosh acoshl
283# define c99_asinh asinhl
284# define c99_atanh atanhl
285# define c99_cbrt cbrtl
286# define c99_copysign copysignl
287# define c99_erf erfl
288# define c99_erfc erfcl
289# define c99_exp2 exp2l
290# define c99_expm1 expm1l
291# define c99_fdim fdiml
292# define c99_fma fmal
293# define c99_fmax fmaxl
294# define c99_fmin fminl
295# define c99_hypot hypotl
296# define c99_ilogb ilogbl
297# define c99_lgamma lgammal
298# define c99_log1p log1pl
299# define c99_log2 log2l
300# define c99_logb logbl
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301# if defined(USE_64_BIT_INT) && QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LLRINTL)
302# define c99_lrint llrintl
303# elif defined(HAS_LRINTL)
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304# define c99_lrint lrintl
305# endif
755cce00 306# if defined(USE_64_BIT_INT) && QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LLROUNDL)
f1498836 307# define c99_lround llroundl
755cce00 308# elif defined(HAS_LROUNDL)
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309# define c99_lround lroundl
310# endif
311# define c99_nan nanl
312# define c99_nearbyint nearbyintl
313# define c99_nextafter nextafterl
314# define c99_nexttoward nexttowardl
315# define c99_remainder remainderl
316# define c99_remquo remquol
317# define c99_rint rintl
318# define c99_round roundl
319# define c99_scalbn scalbnl
320# ifdef HAS_SIGNBIT /* possibly bad assumption */
321# define c99_signbit signbitl
322# endif
323# define c99_tgamma tgammal
324# define c99_trunc truncl
325#else
326# define c99_acosh acosh
327# define c99_asinh asinh
328# define c99_atanh atanh
329# define c99_cbrt cbrt
330# define c99_copysign copysign
331# define c99_erf erf
332# define c99_erfc erfc
333# define c99_exp2 exp2
334# define c99_expm1 expm1
335# define c99_fdim fdim
336# define c99_fma fma
337# define c99_fmax fmax
338# define c99_fmin fmin
339# define c99_hypot hypot
340# define c99_ilogb ilogb
341# define c99_lgamma lgamma
342# define c99_log1p log1p
343# define c99_log2 log2
344# define c99_logb logb
345# if defined(USE_64_BIT_INT) && QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LLRINT)
346# define c99_lrint llrint
347# else
348# define c99_lrint lrint
349# endif
350# if defined(USE_64_BIT_INT) && QUADKIND == QUAD_IS_LONG_LONG && defined(HAS_LLROUND)
351# define c99_lround llround
7965edec 352# else
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353# define c99_lround lround
354# endif
355# define c99_nan nan
356# define c99_nearbyint nearbyint
357# define c99_nextafter nextafter
358# define c99_nexttoward nexttoward
359# define c99_remainder remainder
360# define c99_remquo remquo
361# define c99_rint rint
362# define c99_round round
363# define c99_scalbn scalbn
5716d070 364/* We already define Perl_signbit in perl.h. */
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365# ifdef HAS_SIGNBIT
366# define c99_signbit signbit
7965edec 367# endif
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368# define c99_tgamma tgamma
369# define c99_trunc trunc
370#endif
03397f96 371
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372/* AIX xlc (__IBMC__) really doesn't have the following long double
373 * math interfaces (no __acoshl128 aka acoshl, etc.), see
374 * hints/aix.sh. These are in the -lc128 but fail to be found
375 * during dynamic linking/loading.
376 *
377 * XXX1 Better Configure scans
378 * XXX2 Is this xlc version dependent? */
379#if defined(USE_LONG_DOUBLE) && defined(__IBMC__)
380# undef c99_acosh
381# undef c99_asinh
382# undef c99_atanh
383# undef c99_cbrt
384# undef c99_copysign
385# undef c99_exp2
386# undef c99_expm1
387# undef c99_fdim
388# undef c99_fma
389# undef c99_fmax
390# undef c99_fmin
391# undef c99_hypot
392# undef c99_ilogb
393# undef c99_lrint
394# undef c99_lround
395# undef c99_log1p
396# undef c99_log2
397# undef c99_logb
398# undef c99_nan
399# undef c99_nearbyint
400# undef c99_nextafter
401# undef c99_nexttoward
402# undef c99_remainder
403# undef c99_remquo
404# undef c99_rint
405# undef c99_round
406# undef c99_scalbn
407# undef c99_tgamma
408# undef c99_trunc
409#endif
410
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411#ifndef isunordered
412# ifdef Perl_isnan
413# define isunordered(x, y) (Perl_isnan(x) || Perl_isnan(y))
414# elif defined(HAS_UNORDERED)
415# define isunordered(x, y) unordered(x, y)
2bf3fd6f 416# endif
f1498836 417#endif
2bf3fd6f 418
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419/* XXX these isgreater/isnormal/isunordered macros definitions should
420 * be moved further in the file to be part of the emulations, so that
421 * platforms can e.g. #undef c99_isunordered and have it work like
422 * it does for the other interfaces. */
423
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424#if !defined(isgreater) && defined(isunordered)
425# define isgreater(x, y) (!isunordered((x), (y)) && (x) > (y))
426# define isgreaterequal(x, y) (!isunordered((x), (y)) && (x) >= (y))
427# define isless(x, y) (!isunordered((x), (y)) && (x) < (y))
428# define islessequal(x, y) (!isunordered((x), (y)) && (x) <= (y))
429# define islessgreater(x, y) (!isunordered((x), (y)) && \
2bf3fd6f 430 ((x) > (y) || (y) > (x)))
f1498836 431#endif
2bf3fd6f 432
03397f96 433/* Check both the Configure symbol and the macro-ness (like C99 promises). */
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434#if defined(HAS_FPCLASSIFY) && defined(fpclassify)
435# define c99_fpclassify fpclassify
436#endif
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437/* Like isnormal(), the isfinite(), isinf(), and isnan() are also C99
438 and also (sizeof-arg-aware) macros, but they are already well taken
439 care of by Configure et al, and defined in perl.h as
440 Perl_isfinite(), Perl_isinf(), and Perl_isnan(). */
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441#ifdef isnormal
442# define c99_isnormal isnormal
443#endif
444#ifdef isgreater /* canary for all the C99 is*<cmp>* macros. */
445# define c99_isgreater isgreater
446# define c99_isgreaterequal isgreaterequal
447# define c99_isless isless
448# define c99_islessequal islessequal
449# define c99_islessgreater islessgreater
450# define c99_isunordered isunordered
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451#endif
452
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453/* The Great Wall of Undef where according to the definedness of HAS_FOO symbols
454 * the corresponding c99_foo wrappers are undefined. This list doesn't include
455 * the isfoo() interfaces because they are either type-aware macros, or dealt
456 * separately, already in perl.h */
457
458#ifndef HAS_ACOSH
459# undef c99_acosh
460#endif
461#ifndef HAS_ASINH
462# undef c99_asinh
463#endif
464#ifndef HAS_ATANH
465# undef c99_atanh
466#endif
467#ifndef HAS_CBRT
468# undef c99_cbrt
469#endif
470#ifndef HAS_COPYSIGN
471# undef c99_copysign
472#endif
473#ifndef HAS_ERF
474# undef c99_erf
475#endif
476#ifndef HAS_ERFC
477# undef c99_erfc
478#endif
479#ifndef HAS_EXP2
480# undef c99_exp2
481#endif
482#ifndef HAS_EXPM1
483# undef c99_expm1
484#endif
485#ifndef HAS_FDIM
486# undef c99_fdim
487#endif
488#ifndef HAS_FMA
489# undef c99_fma
490#endif
491#ifndef HAS_FMAX
492# undef c99_fmax
493#endif
494#ifndef HAS_FMIN
495# undef c99_fmin
496#endif
497#ifndef HAS_FPCLASSIFY
498# undef c99_fpclassify
499#endif
500#ifndef HAS_HYPOT
501# undef c99_hypot
502#endif
503#ifndef HAS_ILOGB
504# undef c99_ilogb
505#endif
506#ifndef HAS_LGAMMA
507# undef c99_lgamma
508#endif
509#ifndef HAS_LOG1P
510# undef c99_log1p
511#endif
512#ifndef HAS_LOG2
513# undef c99_log2
514#endif
515#ifndef HAS_LOGB
516# undef c99_logb
517#endif
518#ifndef HAS_LRINT
519# undef c99_lrint
520#endif
521#ifndef HAS_LROUND
522# undef c99_lround
523#endif
524#ifndef HAS_NAN
525# undef c99_nan
526#endif
527#ifndef HAS_NEARBYINT
528# undef c99_nearbyint
529#endif
530#ifndef HAS_NEXTAFTER
531# undef c99_nextafter
532#endif
533#ifndef HAS_NEXTTOWARD
534# undef c99_nexttoward
535#endif
536#ifndef HAS_REMAINDER
537# undef c99_remainder
538#endif
539#ifndef HAS_REMQUO
540# undef c99_remquo
541#endif
542#ifndef HAS_RINT
543# undef c99_rint
544#endif
545#ifndef HAS_ROUND
546# undef c99_round
547#endif
548#ifndef HAS_SCALBN
549# undef c99_scalbn
550#endif
551#ifndef HAS_SIGNBIT
552# undef c99_signbit
553#endif
554#ifndef HAS_TGAMMA
555# undef c99_tgamma
556#endif
557#ifndef HAS_TRUNC
558# undef c99_trunc
559#endif
560
bfce4ab3 561#ifdef WIN32
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562
563/* Some APIs exist under Win32 with "underbar" names. */
564# undef c99_hypot
565# undef c99_logb
566# undef c99_nextafter
567# define c99_hypot _hypot
568# define c99_logb _logb
569# define c99_nextafter _nextafter
570
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571# define bessel_j0 _j0
572# define bessel_j1 _j1
573# define bessel_jn _jn
574# define bessel_y0 _y0
575# define bessel_y1 _y1
576# define bessel_yn _yn
577
5716d070 578#endif
bfce4ab3 579
39b5f1c4 580/* The Bessel functions: BSD, SVID, XPG4, and POSIX. But not C99. */
05b4a618 581#if defined(HAS_J0) && !defined(bessel_j0)
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582# if defined(USE_LONG_DOUBLE) && defined(HAS_J0L)
583# define bessel_j0 j0l
584# define bessel_j1 j1l
585# define bessel_jn jnl
586# define bessel_y0 y0l
587# define bessel_y1 y1l
588# define bessel_yn ynl
589# else
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590# define bessel_j0 j0
591# define bessel_j1 j1
592# define bessel_jn jn
593# define bessel_y0 y0
594# define bessel_y1 y1
595# define bessel_yn yn
5716d070 596# endif
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597#endif
598
39b5f1c4 599/* Emulations for missing math APIs.
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600 *
601 * Keep in mind that the point of many of these functions is that
602 * they, if available, are supposed to give more precise/more
39b5f1c4
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603 * numerically stable results.
604 *
605 * See e.g. http://www.johndcook.com/math_h.html
606 */
607
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608#ifndef c99_acosh
609static NV my_acosh(NV x)
610{
611 return Perl_log(x + Perl_sqrt(x * x - 1));
612}
613# define c99_acosh my_acosh
614#endif
615
616#ifndef c99_asinh
617static NV my_asinh(NV x)
618{
619 return Perl_log(x + Perl_sqrt(x * x + 1));
620}
621# define c99_asinh my_asinh
622#endif
623
624#ifndef c99_atanh
625static NV my_atanh(NV x)
626{
627 return (Perl_log(1 + x) - Perl_log(1 - x)) / 2;
628}
629# define c99_atanh my_atanh
630#endif
631
632#ifndef c99_cbrt
633static NV my_cbrt(NV x)
634{
635 static const NV one_third = (NV)1.0/3;
636 return x >= 0.0 ? Perl_pow(x, one_third) : -Perl_pow(-x, one_third);
637}
638# define c99_cbrt my_cbrt
639#endif
640
641#ifndef c99_copysign
642static NV my_copysign(NV x, NV y)
643{
644 return y >= 0 ? (x < 0 ? -x : x) : (x < 0 ? x : -x);
645}
646# define c99_copysign my_copysign
647#endif
648
1ae51000 649/* XXX cosh (though c89) */
d5f4f26a 650
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651#ifndef c99_erf
652static NV my_erf(NV x)
653{
654 /* http://www.johndcook.com/cpp_erf.html -- public domain */
655 NV a1 = 0.254829592;
656 NV a2 = -0.284496736;
657 NV a3 = 1.421413741;
658 NV a4 = -1.453152027;
659 NV a5 = 1.061405429;
660 NV p = 0.3275911;
efc74307 661 NV t, y;
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662 int sign = x < 0 ? -1 : 1; /* Save the sign. */
663 x = PERL_ABS(x);
664
665 /* Abramowitz and Stegun formula 7.1.26 */
efc74307 666 t = 1.0 / (1.0 + p * x);
6347c79c 667 y = 1.0 - (((((a5*t + a4)*t) + a3)*t + a2)*t + a1) * t * Perl_exp(-x*x);
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668
669 return sign * y;
670}
671# define c99_erf my_erf
672#endif
673
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674#ifndef c99_erfc
675static NV my_erfc(NV x) {
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676 /* This is not necessarily numerically stable, but better than nothing. */
677 return 1.0 - c99_erf(x);
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678}
679# define c99_erfc my_erfc
680#endif
d5f4f26a 681
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682#ifndef c99_exp2
683static NV my_exp2(NV x)
684{
685 return Perl_pow((NV)2.0, x);
686}
687# define c99_exp2 my_exp2
688#endif
689
690#ifndef c99_expm1
691static NV my_expm1(NV x)
692{
693 if (PERL_ABS(x) < 1e-5)
7895eac5 694 /* http://www.johndcook.com/cpp_expm1.html -- public domain.
2783359f 695 * Taylor series, the first four terms (the last term quartic). */
39b5f1c4 696 /* Probably not enough for long doubles. */
2783359f 697 return x * (1.0 + x * (1/2.0 + x * (1/6.0 + x/24.0)));
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698 else
699 return Perl_exp(x) - 1;
700}
701# define c99_expm1 my_expm1
702#endif
703
704#ifndef c99_fdim
705static NV my_fdim(NV x, NV y)
706{
eaa53991 707 return (Perl_isnan(x) || Perl_isnan(y)) ? NV_NAN : (x > y ? x - y : 0);
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708}
709# define c99_fdim my_fdim
710#endif
711
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712#ifndef c99_fma
713static NV my_fma(NV x, NV y, NV z)
714{
715 return (x * y) + z;
716}
717# define c99_fma my_fma
718#endif
719
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720#ifndef c99_fmax
721static NV my_fmax(NV x, NV y)
722{
723 if (Perl_isnan(x)) {
724 return Perl_isnan(y) ? NV_NAN : y;
725 } else if (Perl_isnan(y)) {
726 return x;
727 }
728 return x > y ? x : y;
729}
730# define c99_fmax my_fmax
731#endif
732
733#ifndef c99_fmin
734static NV my_fmin(NV x, NV y)
735{
736 if (Perl_isnan(x)) {
737 return Perl_isnan(y) ? NV_NAN : y;
738 } else if (Perl_isnan(y)) {
739 return x;
740 }
741 return x < y ? x : y;
742}
743# define c99_fmin my_fmin
744#endif
745
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746#ifndef c99_fpclassify
747
ea464252 748static IV my_fpclassify(NV x)
935e3c48 749{
c3607571 750#ifdef Perl_fp_class_inf
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751 if (Perl_fp_class_inf(x)) return FP_INFINITE;
752 if (Perl_fp_class_nan(x)) return FP_NAN;
753 if (Perl_fp_class_norm(x)) return FP_NORMAL;
754 if (Perl_fp_class_denorm(x)) return FP_SUBNORMAL;
755 if (Perl_fp_class_zero(x)) return FP_ZERO;
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756# define c99_fpclassify my_fpclassify
757#endif
c3607571 758 return -1;
935e3c48 759}
935e3c48 760
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761#endif
762
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763#ifndef c99_hypot
764static NV my_hypot(NV x, NV y)
765{
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766 /* http://en.wikipedia.org/wiki/Hypot */
767 NV t;
768 x = PERL_ABS(x); /* Take absolute values. */
769 if (y == 0)
770 return x;
771 if (Perl_isnan(y))
772 return NV_INF;
773 y = PERL_ABS(y);
774 if (x < y) { /* Swap so that y is less. */
775 t = x;
776 x = y;
777 y = t;
39b5f1c4 778 }
7bbf2c9b 779 t = y / x;
6347c79c 780 return x * Perl_sqrt(1.0 + t * t);
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781}
782# define c99_hypot my_hypot
783#endif
784
785#ifndef c99_ilogb
786static IV my_ilogb(NV x)
787{
788 return (IV)(Perl_log(x) * M_LOG2E);
789}
790# define c99_ilogb my_ilogb
791#endif
792
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793/* tgamma and lgamma emulations based on
794 * http://www.johndcook.com/cpp_gamma.html,
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795 * code placed in public domain.
796 *
797 * Note that these implementations (neither the johndcook originals
798 * nor these) do NOT set the global signgam variable. This is not
799 * necessarily a bad thing. */
800
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801/* Note that the tgamma() and lgamma() implementations
802 * here depend on each other. */
256fef93 803
dc7cecfb 804#if !defined(HAS_TGAMMA) || !defined(c99_tgamma)
2e9cdb62 805static NV my_tgamma(NV x);
256fef93 806# define c99_tgamma my_tgamma
dc7cecfb 807# define USE_MY_TGAMMA
256fef93 808#endif
dc7cecfb 809#if !defined(HAS_LGAMMA) || !defined(c99_lgamma)
2e9cdb62 810static NV my_lgamma(NV x);
256fef93 811# define c99_lgamma my_lgamma
dc7cecfb 812# define USE_MY_LGAMMA
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813#endif
814
dc7cecfb 815#ifdef USE_MY_TGAMMA
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816static NV my_tgamma(NV x)
817{
f5802bf0 818 const NV gamma = 0.577215664901532860606512090; /* Euler's gamma constant. */
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819 if (Perl_isnan(x) || x < 0.0)
820 return NV_NAN;
821 if (x == 0.0 || x == NV_INF)
822 return x == -0.0 ? -NV_INF : NV_INF;
823
824 /* The function domain is split into three intervals:
825 * (0, 0.001), [0.001, 12), and (12, infinity) */
826
827 /* First interval: (0, 0.001)
f5802bf0 828 * For small values, 1/tgamma(x) has power series x + gamma x^2,
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829 * so in this range, 1/tgamma(x) = x + gamma x^2 with error on the order of x^3.
830 * The relative error over this interval is less than 6e-7. */
831 if (x < 0.001)
832 return 1.0 / (x * (1.0 + gamma * x));
833
834 /* Second interval: [0.001, 12) */
835 if (x < 12.0) {
836 double y = x; /* Working copy. */
837 int n = 0;
838 /* Numerator coefficients for approximation over the interval (1,2) */
839 static const NV p[] = {
840 -1.71618513886549492533811E+0,
841 2.47656508055759199108314E+1,
842 -3.79804256470945635097577E+2,
843 6.29331155312818442661052E+2,
844 8.66966202790413211295064E+2,
845 -3.14512729688483675254357E+4,
846 -3.61444134186911729807069E+4,
847 6.64561438202405440627855E+4
848 };
849 /* Denominator coefficients for approximation over the interval (1, 2) */
850 static const NV q[] = {
851 -3.08402300119738975254353E+1,
852 3.15350626979604161529144E+2,
853 -1.01515636749021914166146E+3,
854 -3.10777167157231109440444E+3,
855 2.25381184209801510330112E+4,
856 4.75584627752788110767815E+3,
857 -1.34659959864969306392456E+5,
858 -1.15132259675553483497211E+5
859 };
860 NV num = 0.0;
861 NV den = 1.0;
862 NV z;
863 NV result;
864 int i;
865
866 if (x < 1.0)
867 y += 1.0;
868 else {
5306a04c 869 n = (int)Perl_floor(y) - 1;
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870 y -= n;
871 }
872 z = y - 1;
873 for (i = 0; i < 8; i++) {
874 num = (num + p[i]) * z;
875 den = den * z + q[i];
876 }
877 result = num / den + 1.0;
878
879 if (x < 1.0) {
880 /* Use the identity tgamma(z) = tgamma(z+1)/z
881 * The variable "result" now holds tgamma of the original y + 1
882 * Thus we use y - 1 to get back the original y. */
883 result /= (y - 1.0);
884 }
885 else {
886 /* Use the identity tgamma(z+n) = z*(z+1)* ... *(z+n-1)*tgamma(z) */
887 for (i = 0; i < n; i++)
888 result *= y++;
889 }
890
891 return result;
892 }
893
894 /* Third interval: [12, +Inf) */
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895#if LDBL_MANT_DIG == 113 /* IEEE quad prec */
896 if (x > 1755.548) {
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897 return NV_INF;
898 }
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899#else
900 if (x > 171.624) {
901 return NV_INF;
902 }
903#endif
2e9cdb62 904
256fef93 905 return Perl_exp(c99_lgamma(x));
2e9cdb62 906}
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907#endif
908
dc7cecfb 909#ifdef USE_MY_LGAMMA
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910static NV my_lgamma(NV x)
911{
912 if (Perl_isnan(x))
913 return NV_NAN;
914 if (x <= 0 || x == NV_INF)
915 return NV_INF;
916 if (x == 1.0 || x == 2.0)
917 return 0;
918 if (x < 12.0)
256fef93 919 return Perl_log(PERL_ABS(c99_tgamma(x)));
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920 /* Abramowitz and Stegun 6.1.41
921 * Asymptotic series should be good to at least 11 or 12 figures
922 * For error analysis, see Whittiker and Watson
923 * A Course in Modern Analysis (1927), page 252 */
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924 {
925 static const NV c[8] = {
926 1.0/12.0,
927 -1.0/360.0,
928 1.0/1260.0,
929 -1.0/1680.0,
930 1.0/1188.0,
931 -691.0/360360.0,
932 1.0/156.0,
933 -3617.0/122400.0
934 };
935 NV z = 1.0 / (x * x);
936 NV sum = c[7];
937 static const NV half_log_of_two_pi =
938 0.91893853320467274178032973640562;
939 NV series;
940 int i;
941 for (i = 6; i >= 0; i--) {
942 sum *= z;
943 sum += c[i];
944 }
945 series = sum / x;
946 return (x - 0.5) * Perl_log(x) - x + half_log_of_two_pi + series;
947 }
948}
2e9cdb62 949#endif
d5f4f26a 950
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951#ifndef c99_log1p
952static NV my_log1p(NV x)
953{
7895eac5 954 /* http://www.johndcook.com/cpp_log_one_plus_x.html -- public domain.
2783359f 955 * Taylor series, the first four terms (the last term quartic). */
3ae4cd6c 956 if (x < -1.0)
731a2bdb 957 return NV_NAN;
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958 if (x == -1.0)
959 return -NV_INF;
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960 if (PERL_ABS(x) > 1e-4)
961 return Perl_log(1.0 + x);
962 else
963 /* Probably not enough for long doubles. */
2783359f 964 return x * (1.0 + x * (-1/2.0 + x * (1/3.0 - x/4.0)));
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965}
966# define c99_log1p my_log1p
967#endif
968
969#ifndef c99_log2
970static NV my_log2(NV x)
971{
972 return Perl_log(x) * M_LOG2E;
973}
974# define c99_log2 my_log2
975#endif
976
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977/* XXX nextafter */
978
979/* XXX nexttoward */
980
981static int my_fegetround()
982{
983#ifdef HAS_FEGETROUND
984 return fegetround();
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985#elif defined(HAS_FPGETROUND)
986 switch (fpgetround()) {
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987 case FP_RN: return FE_TONEAREST;
988 case FP_RZ: return FE_TOWARDZERO;
989 case FP_RM: return FE_DOWNWARD;
cc639810 990 case FP_RP: return FE_UPWARD;
9d491117 991 default: return -1;
e0939537 992 }
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993#elif defined(FLT_ROUNDS)
994 switch (FLT_ROUNDS) {
c35bb41d 995 case 0: return FE_TOWARDZERO;
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996 case 1: return FE_TONEAREST;
997 case 2: return FE_UPWARD;
998 case 3: return FE_DOWNWARD;
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999 default: return -1;
1000 }
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1001#elif defined(__osf__) /* Tru64 */
1002 switch (read_rnd()) {
1003 case FP_RND_RN: return FE_TONEAREST;
1004 case FP_RND_RZ: return FE_TOWARDZERO;
1005 case FP_RND_RM: return FE_DOWNWARD;
1006 case FP_RND_RP: return FE_UPWARD;
1007 default: return -1;
1008 }
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1009#else
1010 return -1;
1011#endif
1012}
1013
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1014/* Toward closest integer. */
1015#define MY_ROUND_NEAREST(x) ((NV)((IV)((x) >= 0.0 ? (x) + 0.5 : (x) - 0.5)))
1016
1017/* Toward zero. */
1018#define MY_ROUND_TRUNC(x) ((NV)((IV)(x)))
1019
e0939537 1020/* Toward minus infinity. */
c4125715 1021#define MY_ROUND_DOWN(x) ((NV)((IV)((x) >= 0.0 ? (x) : (x) - 0.5)))
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1022
1023/* Toward plus infinity. */
c4125715 1024#define MY_ROUND_UP(x) ((NV)((IV)((x) >= 0.0 ? (x) + 0.5 : (x))))
e0939537 1025
5a4dabf8 1026#if (!defined(c99_nearbyint) || !defined(c99_lrint)) && defined(FE_TONEAREST)
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1027static NV my_rint(NV x)
1028{
1029#ifdef FE_TONEAREST
1030 switch (my_fegetround()) {
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1031 case FE_TONEAREST: return MY_ROUND_NEAREST(x);
1032 case FE_TOWARDZERO: return MY_ROUND_TRUNC(x);
1033 case FE_DOWNWARD: return MY_ROUND_DOWN(x);
1034 case FE_UPWARD: return MY_ROUND_UP(x);
9d491117 1035 default: return NV_NAN;
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1036 }
1037#elif defined(HAS_FPGETROUND)
1038 switch (fpgetround()) {
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1039 case FP_RN: return MY_ROUND_NEAREST(x);
1040 case FP_RZ: return MY_ROUND_TRUNC(x);
1041 case FP_RM: return MY_ROUND_DOWN(x);
1042 case FE_RP: return MY_ROUND_UP(x);
9d491117 1043 default: return NV_NAN;
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1044 }
1045#else
1046 return NV_NAN;
1047#endif
1048}
5a4dabf8 1049#endif
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1050
1051/* XXX nearbyint() and rint() are not really identical -- but the difference
1052 * is messy: nearbyint is defined NOT to raise FE_INEXACT floating point
1053 * exceptions, while rint() is defined to MAYBE raise them. At the moment
1054 * Perl is blissfully unaware of such fine detail of floating point. */
1055#ifndef c99_nearbyint
1056# ifdef FE_TONEAREST
1057# define c99_nearbyrint my_rint
1058# endif
1059#endif
1060
1061#ifndef c99_lrint
1062# ifdef FE_TONEAREST
c40e90c4 1063static IV my_lrint(NV x)
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1064{
1065 return (IV)my_rint(x);
1066}
1067# define c99_lrint my_lrint
1068# endif
1069#endif
1070
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1071#ifndef c99_lround
1072static IV my_lround(NV x)
1073{
c63c00af 1074 return (IV)MY_ROUND_NEAREST(x);
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1075}
1076# define c99_lround my_lround
1077#endif
1078
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1079/* XXX remainder */
1080
1081/* XXX remquo */
1082
1083#ifndef c99_rint
1084# ifdef FE_TONEAREST
1085# define c99_rint my_rint
1086# endif
1087#endif
1088
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1089#ifndef c99_round
1090static NV my_round(NV x)
1091{
c4125715 1092 return MY_ROUND_NEAREST(x);
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1093}
1094# define c99_round my_round
1095#endif
1096
1097#ifndef c99_scalbn
93ddb856 1098# if defined(Perl_ldexp) && FLT_RADIX == 2
ea464252 1099static NV my_scalbn(NV x, int y)
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1100{
1101 return Perl_ldexp(x, y);
1102}
1103# define c99_scalbn my_scalbn
1104# endif
1105#endif
1106
1ae51000 1107/* XXX sinh (though c89) */
39b5f1c4 1108
2e9cdb62 1109/* tgamma -- see lgamma */
bfce4ab3 1110
1ae51000 1111/* XXX tanh (though c89) */
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1112
1113#ifndef c99_trunc
1114static NV my_trunc(NV x)
1115{
c4125715 1116 return MY_ROUND_TRUNC(x);
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JH
1117}
1118# define c99_trunc my_trunc
1119#endif
1120
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1121#undef NV_PAYLOAD_DEBUG
1122
1123/* NOTE: the NaN payload API implementation is hand-rolled, since the
1124 * APIs are only proposed ones as of June 2015, so very few, if any,
1125 * platforms have implementations yet, so HAS_SETPAYLOAD and such are
1126 * unlikely to be helpful.
1127 *
1128 * XXX - if the core numification wants to actually generate
1129 * the nan payload in "nan(123)", and maybe "nans(456)", for
1130 * signaling payload", this needs to be moved to e.g. numeric.c
1131 * (look for grok_infnan)
1132 *
1133 * Conversely, if the core stringification wants the nan payload
1134 * and/or the nan quiet/signaling distinction, S_getpayload()
1135 * from this file needs to be moved, to e.g. sv.c (look for S_infnan_2pv),
1136 * and the (trivial) functionality of issignaling() copied
1137 * (for generating "NaNS", or maybe even "NaNQ") -- or maybe there
1138 * are too many formatting parameters for simple stringification?
1139 */
1140
1141/* While it might make sense for the payload to be UV or IV,
1142 * to avoid conversion loss, the proposed ISO interfaces use
1143 * a floating point input, which is then truncated to integer,
1144 * and only the integer part being used. This is workable,
1145 * except for: (1) the conversion loss (2) suboptimal for
1146 * 32-bit integer platforms. A workaround API for (2) and
1147 * in general for bit-honesty would be an array of integers
1148 * as the payload... but the proposed C API does nothing of
1149 * the kind. */
1150#if NVSIZE == UVSIZE
1151# define NV_PAYLOAD_TYPE UV
1152#else
1153# define NV_PAYLOAD_TYPE NV
1154#endif
1155
1156#ifdef LONGDOUBLE_DOUBLEDOUBLE
1157# define NV_PAYLOAD_SIZEOF_ASSERT(a) assert(sizeof(a) == NVSIZE / 2)
1158#else
1159# define NV_PAYLOAD_SIZEOF_ASSERT(a) assert(sizeof(a) == NVSIZE)
1160#endif
1161
1162static void S_setpayload(NV* nvp, NV_PAYLOAD_TYPE payload, bool signaling)
1163{
1164 dTHX;
1165 static const U8 m[] = { NV_NAN_PAYLOAD_MASK };
1166 static const U8 p[] = { NV_NAN_PAYLOAD_PERM };
1167 UV a[(NVSIZE + UVSIZE - 1) / UVSIZE] = { 0 };
1168 int i;
1169 NV_PAYLOAD_SIZEOF_ASSERT(m);
1170 NV_PAYLOAD_SIZEOF_ASSERT(p);
1171 *nvp = NV_NAN;
1172 /* Divide the input into the array in "base unsigned integer" in
1173 * little-endian order. Note that the integer might be smaller than
1174 * an NV (if UV is U32, for example). */
1175#if NVSIZE == UVSIZE
1176 a[0] = payload; /* The trivial case. */
1177#else
1178 {
1179 NV t1 = c99_trunc(payload); /* towards zero (drop fractional) */
1180#ifdef NV_PAYLOAD_DEBUG
1181 Perl_warn(aTHX_ "t1 = %"NVgf" (payload %"NVgf")\n", t1, payload);
1182#endif
1183 if (t1 <= UV_MAX) {
1184 a[0] = (UV)t1; /* Fast path, also avoids rounding errors (right?) */
1185 } else {
1186 /* UVSIZE < NVSIZE or payload > UV_MAX.
1187 *
1188 * This may happen for example if:
1189 * (1) UVSIZE == 32 and common 64-bit double NV
1190 * (32-bit system not using -Duse64bitint)
1191 * (2) UVSIZE == 64 and the x86-style 80-bit long double NV
1192 * (note that here the room for payload is actually the 64 bits)
1193 * (3) UVSIZE == 64 and the 128-bit IEEE 764 quadruple NV
1194 * (112 bits in mantissa, 111 bits room for payload)
1195 *
1196 * NOTE: this is very sensitive to correctly functioning
1197 * fmod()/fmodl(), and correct casting of big-unsigned-integer to NV.
1198 * If these don't work right, especially the low order bits
1199 * are in danger. For example Solaris and AIX seem to have issues
1200 * here, especially if using 32-bit UVs. */
1201 NV t2;
1202 for (i = 0, t2 = t1; i < (int)C_ARRAY_LENGTH(a); i++) {
1203 a[i] = (UV)Perl_fmod(t2, (NV)UV_MAX);
1204 t2 = Perl_floor(t2 / (NV)UV_MAX);
1205 }
1206 }
1207 }
1208#endif
1209#ifdef NV_PAYLOAD_DEBUG
1210 for (i = 0; i < (int)C_ARRAY_LENGTH(a); i++) {
1211 Perl_warn(aTHX_ "a[%d] = 0x%"UVxf"\n", i, a[i]);
1212 }
1213#endif
1214 for (i = 0; i < (int)sizeof(p); i++) {
1215 if (m[i] && p[i] < sizeof(p)) {
1216 U8 s = (p[i] % UVSIZE) << 3;
1217 UV u = a[p[i] / UVSIZE] & ((UV)0xFF << s);
1218 U8 b = (U8)((u >> s) & m[i]);
1219 ((U8 *)(nvp))[i] &= ~m[i]; /* For NaNs with non-zero payload bits. */
1220 ((U8 *)(nvp))[i] |= b;
1221#ifdef NV_PAYLOAD_DEBUG
1222 Perl_warn(aTHX_ "set p[%2d] = %02x (i = %d, m = %02x, s = %2d, b = %02x, u = %08"UVxf")\n", i, ((U8 *)(nvp))[i], i, m[i], s, b, u);
1223#endif
1224 a[p[i] / UVSIZE] &= ~u;
1225 }
1226 }
1227 if (signaling) {
1228 NV_NAN_SET_SIGNALING(nvp);
1229 }
1230#ifdef USE_LONG_DOUBLE
1231# if LONG_DOUBLEKIND == 3 || LONG_DOUBLEKIND == 4
2f125fcc 1232# if LONG_DOUBLESIZE > 10
07bb61ac 1233 memset((char *)nvp + 10, '\0', LONG_DOUBLESIZE - 10); /* x86 long double */
2f125fcc 1234# endif
07bb61ac
JH
1235# endif
1236#endif
1237 for (i = 0; i < (int)C_ARRAY_LENGTH(a); i++) {
1238 if (a[i]) {
1239 Perl_warn(aTHX_ "payload lost bits (%"UVxf")", a[i]);
1240 break;
1241 }
1242 }
1243#ifdef NV_PAYLOAD_DEBUG
1244 for (i = 0; i < NVSIZE; i++) {
1245 PerlIO_printf(Perl_debug_log, "%02x ", ((U8 *)(nvp))[i]);
1246 }
1247 PerlIO_printf(Perl_debug_log, "\n");
1248#endif
1249}
1250
1251static NV_PAYLOAD_TYPE S_getpayload(NV nv)
1252{
1253 dTHX;
1254 static const U8 m[] = { NV_NAN_PAYLOAD_MASK };
1255 static const U8 p[] = { NV_NAN_PAYLOAD_PERM };
1256 UV a[(NVSIZE + UVSIZE - 1) / UVSIZE] = { 0 };
1257 int i;
1258 NV payload;
1259 NV_PAYLOAD_SIZEOF_ASSERT(m);
1260 NV_PAYLOAD_SIZEOF_ASSERT(p);
1261 payload = 0;
1262 for (i = 0; i < (int)sizeof(p); i++) {
1263 if (m[i] && p[i] < NVSIZE) {
1264 U8 s = (p[i] % UVSIZE) << 3;
1265 a[p[i] / UVSIZE] |= (UV)(((U8 *)(&nv))[i] & m[i]) << s;
1266 }
1267 }
1268 for (i = (int)C_ARRAY_LENGTH(a) - 1; i >= 0; i--) {
1269#ifdef NV_PAYLOAD_DEBUG
1270 Perl_warn(aTHX_ "a[%d] = %"UVxf"\n", i, a[i]);
1271#endif
1272 payload *= UV_MAX;
1273 payload += a[i];
1274 }
1275#ifdef NV_PAYLOAD_DEBUG
1276 for (i = 0; i < NVSIZE; i++) {
1277 PerlIO_printf(Perl_debug_log, "%02x ", ((U8 *)(&nv))[i]);
1278 }
1279 PerlIO_printf(Perl_debug_log, "\n");
1280#endif
1281 return payload;
1282}
1283
3609ea0d 1284/* XXX This comment is just to make I_TERMIO and I_SGTTY visible to
a0d0e21e
LW
1285 metaconfig for future extension writers. We don't use them in POSIX.
1286 (This is really sneaky :-) --AD
1287*/
1288#if defined(I_TERMIOS)
1289#include <termios.h>
1290#endif
a0d0e21e 1291#ifdef I_STDLIB
2304df62 1292#include <stdlib.h>
a0d0e21e 1293#endif
5518ecd4 1294#ifndef __ultrix__
2304df62 1295#include <string.h>
5518ecd4 1296#endif
2304df62 1297#include <sys/stat.h>
2304df62 1298#include <sys/types.h>
2304df62 1299#include <time.h>
6dead956 1300#ifdef I_UNISTD
1d2dff63 1301#include <unistd.h>
6dead956 1302#endif
71be2cbc
PP
1303#include <fcntl.h>
1304
e2465f50 1305#ifdef HAS_TZNAME
fb207d52 1306# if !defined(WIN32) && !defined(__CYGWIN__) && !defined(NETWARE) && !defined(__UWIN__)
e2465f50
JH
1307extern char *tzname[];
1308# endif
1309#else
fb207d52 1310#if !defined(WIN32) && !defined(__UWIN__) || (defined(__MINGW32__) && !defined(tzname))
e2465f50
JH
1311char *tzname[] = { "" , "" };
1312#endif
cb2479a8
JH
1313#endif
1314
6c418a22 1315#if defined(__VMS) && !defined(__POSIX_SOURCE)
294c8bc4
CB
1316
1317# include <utsname.h>
6c418a22 1318
6990d991 1319# undef mkfifo
6c418a22 1320# define mkfifo(a,b) (not_here("mkfifo"),-1)
6c418a22
PP
1321
1322 /* The POSIX notion of ttyname() is better served by getname() under VMS */
1323 static char ttnambuf[64];
1324# define ttyname(fd) (isatty(fd) > 0 ? getname(fd,ttnambuf,0) : NULL)
1325
6c418a22 1326#else
d308986b 1327#if defined (__CYGWIN__)
f89d6eaa
FE
1328# define tzname _tzname
1329#endif
2986a63f 1330#if defined (WIN32) || defined (NETWARE)
6990d991 1331# undef mkfifo
6dead956 1332# define mkfifo(a,b) not_here("mkfifo")
873ef191 1333# define ttyname(a) (char*)not_here("ttyname")
6dead956 1334# define sigset_t long
86200d5c 1335# define pid_t long
6dead956
GS
1336# ifdef _MSC_VER
1337# define mode_t short
1338# endif
62520c91
GS
1339# ifdef __MINGW32__
1340# define mode_t short
f6c6487a
GS
1341# ifndef tzset
1342# define tzset() not_here("tzset")
1343# endif
1344# ifndef _POSIX_OPEN_MAX
1345# define _POSIX_OPEN_MAX FOPEN_MAX /* XXX bogus ? */
1346# endif
62520c91 1347# endif
6dead956
GS
1348# define sigaction(a,b,c) not_here("sigaction")
1349# define sigpending(a) not_here("sigpending")
1350# define sigprocmask(a,b,c) not_here("sigprocmask")
1351# define sigsuspend(a) not_here("sigsuspend")
1352# define sigemptyset(a) not_here("sigemptyset")
1353# define sigaddset(a,b) not_here("sigaddset")
1354# define sigdelset(a,b) not_here("sigdelset")
1355# define sigfillset(a) not_here("sigfillset")
1356# define sigismember(a,b) not_here("sigismember")
2986a63f 1357#ifndef NETWARE
6e22d046
JH
1358# undef setuid
1359# undef setgid
2986a63f
JH
1360# define setuid(a) not_here("setuid")
1361# define setgid(a) not_here("setgid")
1362#endif /* NETWARE */
d172007e 1363#ifndef USE_LONG_DOUBLE
73e21afd 1364# define strtold(s1,s2) not_here("strtold")
d172007e 1365#endif /* USE_LONG_DOUBLE */
6dead956 1366#else
6990d991
JH
1367
1368# ifndef HAS_MKFIFO
b3599c2e 1369# if defined(OS2) || defined(__amigaos4__)
d6a255e6 1370# define mkfifo(a,b) not_here("mkfifo")
3609ea0d 1371# else /* !( defined OS2 ) */
d6a255e6
IZ
1372# ifndef mkfifo
1373# define mkfifo(path, mode) (mknod((path), (mode) | S_IFIFO, 0))
1374# endif
6990d991
JH
1375# endif
1376# endif /* !HAS_MKFIFO */
1377
e37778c2
NC
1378# ifdef I_GRP
1379# include <grp.h>
1380# endif
1381# include <sys/times.h>
1382# ifdef HAS_UNAME
1383# include <sys/utsname.h>
6c418a22 1384# endif
ea34f6bd
AB
1385# ifndef __amigaos4__
1386# include <sys/wait.h>
1387# endif
6c418a22
PP
1388# ifdef I_UTIME
1389# include <utime.h>
1390# endif
2986a63f 1391#endif /* WIN32 || NETWARE */
6dead956 1392#endif /* __VMS */
2304df62
AD
1393
1394typedef int SysRet;
a0d0e21e 1395typedef long SysRetLong;
2304df62
AD
1396typedef sigset_t* POSIX__SigSet;
1397typedef HV* POSIX__SigAction;
a0d0e21e
LW
1398#ifdef I_TERMIOS
1399typedef struct termios* POSIX__Termios;
1400#else /* Define termios types to int, and call not_here for the functions.*/
1401#define POSIX__Termios int
1402#define speed_t int
1403#define tcflag_t int
1404#define cc_t int
1405#define cfgetispeed(x) not_here("cfgetispeed")
1406#define cfgetospeed(x) not_here("cfgetospeed")
1407#define tcdrain(x) not_here("tcdrain")
1408#define tcflush(x,y) not_here("tcflush")
1409#define tcsendbreak(x,y) not_here("tcsendbreak")
1410#define cfsetispeed(x,y) not_here("cfsetispeed")
1411#define cfsetospeed(x,y) not_here("cfsetospeed")
1412#define ctermid(x) (char *) not_here("ctermid")
1413#define tcflow(x,y) not_here("tcflow")
1414#define tcgetattr(x,y) not_here("tcgetattr")
1415#define tcsetattr(x,y,z) not_here("tcsetattr")
1416#endif
1417
1418/* Possibly needed prototypes */
6e22d046 1419#ifndef WIN32
a2e65780 1420START_EXTERN_C
20ce7b12
GS
1421double strtod (const char *, char **);
1422long strtol (const char *, char **, int);
1423unsigned long strtoul (const char *, char **, int);
0ff7b9da
JH
1424#ifdef HAS_STRTOLD
1425long double strtold (const char *, char **);
1426#endif
a2e65780 1427END_EXTERN_C
6e22d046 1428#endif
a0d0e21e 1429
a0d0e21e
LW
1430#ifndef HAS_DIFFTIME
1431#ifndef difftime
1432#define difftime(a,b) not_here("difftime")
1433#endif
1434#endif
1435#ifndef HAS_FPATHCONF
3609ea0d 1436#define fpathconf(f,n) (SysRetLong) not_here("fpathconf")
a0d0e21e
LW
1437#endif
1438#ifndef HAS_MKTIME
1439#define mktime(a) not_here("mktime")
8990e307
LW
1440#endif
1441#ifndef HAS_NICE
1442#define nice(a) not_here("nice")
1443#endif
a0d0e21e 1444#ifndef HAS_PATHCONF
3609ea0d 1445#define pathconf(f,n) (SysRetLong) not_here("pathconf")
a0d0e21e
LW
1446#endif
1447#ifndef HAS_SYSCONF
3609ea0d 1448#define sysconf(n) (SysRetLong) not_here("sysconf")
a0d0e21e 1449#endif
8990e307
LW
1450#ifndef HAS_READLINK
1451#define readlink(a,b,c) not_here("readlink")
1452#endif
1453#ifndef HAS_SETPGID
1454#define setpgid(a,b) not_here("setpgid")
1455#endif
8990e307
LW
1456#ifndef HAS_SETSID
1457#define setsid() not_here("setsid")
1458#endif
a0d0e21e
LW
1459#ifndef HAS_STRCOLL
1460#define strcoll(s1,s2) not_here("strcoll")
1461#endif
a89d8a78
DH
1462#ifndef HAS_STRTOD
1463#define strtod(s1,s2) not_here("strtod")
1464#endif
0ff7b9da
JH
1465#ifndef HAS_STRTOLD
1466#define strtold(s1,s2) not_here("strtold")
1467#endif
a89d8a78
DH
1468#ifndef HAS_STRTOL
1469#define strtol(s1,s2,b) not_here("strtol")
1470#endif
1471#ifndef HAS_STRTOUL
1472#define strtoul(s1,s2,b) not_here("strtoul")
1473#endif
a0d0e21e
LW
1474#ifndef HAS_STRXFRM
1475#define strxfrm(s1,s2,n) not_here("strxfrm")
8990e307
LW
1476#endif
1477#ifndef HAS_TCGETPGRP
1478#define tcgetpgrp(a) not_here("tcgetpgrp")
1479#endif
1480#ifndef HAS_TCSETPGRP
1481#define tcsetpgrp(a,b) not_here("tcsetpgrp")
1482#endif
1483#ifndef HAS_TIMES
2986a63f 1484#ifndef NETWARE
8990e307 1485#define times(a) not_here("times")
2986a63f 1486#endif /* NETWARE */
8990e307
LW
1487#endif
1488#ifndef HAS_UNAME
1489#define uname(a) not_here("uname")
1490#endif
1491#ifndef HAS_WAITPID
1492#define waitpid(a,b,c) not_here("waitpid")
1493#endif
1494
a0d0e21e
LW
1495#ifndef HAS_MBLEN
1496#ifndef mblen
1497#define mblen(a,b) not_here("mblen")
1498#endif
1499#endif
1500#ifndef HAS_MBSTOWCS
1501#define mbstowcs(s, pwcs, n) not_here("mbstowcs")
1502#endif
1503#ifndef HAS_MBTOWC
1504#define mbtowc(pwc, s, n) not_here("mbtowc")
1505#endif
1506#ifndef HAS_WCSTOMBS
1507#define wcstombs(s, pwcs, n) not_here("wcstombs")
1508#endif
1509#ifndef HAS_WCTOMB
1510#define wctomb(s, wchar) not_here("wcstombs")
1511#endif
1512#if !defined(HAS_MBLEN) && !defined(HAS_MBSTOWCS) && !defined(HAS_MBTOWC) && !defined(HAS_WCSTOMBS) && !defined(HAS_WCTOMB)
1513/* If we don't have these functions, then we wouldn't have gotten a typedef
1514 for wchar_t, the wide character type. Defining wchar_t allows the
1515 functions referencing it to compile. Its actual type is then meaningless,
1516 since without the above functions, all sections using it end up calling
1517 not_here() and croak. --Kaveh Ghazi (ghazi@noc.rutgers.edu) 9/18/94. */
1518#ifndef wchar_t
1519#define wchar_t char
1520#endif
1521#endif
1522
3f3bcbfc
KW
1523#ifndef HAS_LOCALECONV
1524# define localeconv() not_here("localeconv")
1525#else
2f0945cb
NC
1526struct lconv_offset {
1527 const char *name;
1528 size_t offset;
1529};
1530
0b057af7 1531static const struct lconv_offset lconv_strings[] = {
03ceeedf 1532#ifdef USE_LOCALE_NUMERIC
3800c318
JH
1533 {"decimal_point", STRUCT_OFFSET(struct lconv, decimal_point)},
1534 {"thousands_sep", STRUCT_OFFSET(struct lconv, thousands_sep)},
03ceeedf 1535# ifndef NO_LOCALECONV_GROUPING
3800c318 1536 {"grouping", STRUCT_OFFSET(struct lconv, grouping)},
03ceeedf 1537# endif
2f0945cb 1538#endif
03ceeedf 1539#ifdef USE_LOCALE_MONETARY
3800c318
JH
1540 {"int_curr_symbol", STRUCT_OFFSET(struct lconv, int_curr_symbol)},
1541 {"currency_symbol", STRUCT_OFFSET(struct lconv, currency_symbol)},
1542 {"mon_decimal_point", STRUCT_OFFSET(struct lconv, mon_decimal_point)},
03ceeedf 1543# ifndef NO_LOCALECONV_MON_THOUSANDS_SEP
3800c318 1544 {"mon_thousands_sep", STRUCT_OFFSET(struct lconv, mon_thousands_sep)},
03ceeedf
KW
1545# endif
1546# ifndef NO_LOCALECONV_MON_GROUPING
3800c318 1547 {"mon_grouping", STRUCT_OFFSET(struct lconv, mon_grouping)},
03ceeedf 1548# endif
3800c318
JH
1549 {"positive_sign", STRUCT_OFFSET(struct lconv, positive_sign)},
1550 {"negative_sign", STRUCT_OFFSET(struct lconv, negative_sign)},
03ceeedf 1551#endif
2f0945cb
NC
1552 {NULL, 0}
1553};
1554
c1284011
KW
1555#ifdef USE_LOCALE_NUMERIC
1556
1557/* The Linux man pages say these are the field names for the structure
1558 * components that are LC_NUMERIC; the rest being LC_MONETARY */
1559# define isLC_NUMERIC_STRING(name) (strcmp(name, "decimal_point") \
1560 || strcmp(name, "thousands_sep") \
1561 \
1562 /* There should be no harm done \
1563 * checking for this, even if \
1564 * NO_LOCALECONV_GROUPING */ \
1565 || strcmp(name, "grouping"))
1566#else
1567# define isLC_NUMERIC_STRING(name) (0)
1568#endif
1569
0b057af7 1570static const struct lconv_offset lconv_integers[] = {
03ceeedf 1571#ifdef USE_LOCALE_MONETARY
3800c318
JH
1572 {"int_frac_digits", STRUCT_OFFSET(struct lconv, int_frac_digits)},
1573 {"frac_digits", STRUCT_OFFSET(struct lconv, frac_digits)},
1574 {"p_cs_precedes", STRUCT_OFFSET(struct lconv, p_cs_precedes)},
1575 {"p_sep_by_space", STRUCT_OFFSET(struct lconv, p_sep_by_space)},
1576 {"n_cs_precedes", STRUCT_OFFSET(struct lconv, n_cs_precedes)},
1577 {"n_sep_by_space", STRUCT_OFFSET(struct lconv, n_sep_by_space)},
1578 {"p_sign_posn", STRUCT_OFFSET(struct lconv, p_sign_posn)},
1579 {"n_sign_posn", STRUCT_OFFSET(struct lconv, n_sign_posn)},
b15c1b56
AF
1580#ifdef HAS_LC_MONETARY_2008
1581 {"int_p_cs_precedes", STRUCT_OFFSET(struct lconv, int_p_cs_precedes)},
1582 {"int_p_sep_by_space", STRUCT_OFFSET(struct lconv, int_p_sep_by_space)},
1583 {"int_n_cs_precedes", STRUCT_OFFSET(struct lconv, int_n_cs_precedes)},
1584 {"int_n_sep_by_space", STRUCT_OFFSET(struct lconv, int_n_sep_by_space)},
1585 {"int_p_sign_posn", STRUCT_OFFSET(struct lconv, int_p_sign_posn)},
1586 {"int_n_sign_posn", STRUCT_OFFSET(struct lconv, int_n_sign_posn)},
1587#endif
03ceeedf 1588#endif
2f0945cb
NC
1589 {NULL, 0}
1590};
1591
3f3bcbfc 1592#endif /* HAS_LOCALECONV */
a0d0e21e 1593
172ea7c8 1594#ifdef HAS_LONG_DOUBLE
53796371 1595# if LONG_DOUBLESIZE > NVSIZE
172ea7c8
JH
1596# undef HAS_LONG_DOUBLE /* XXX until we figure out how to use them */
1597# endif
1598#endif
1599
1600#ifndef HAS_LONG_DOUBLE
1601#ifdef LDBL_MAX
1602#undef LDBL_MAX
1603#endif
1604#ifdef LDBL_MIN
1605#undef LDBL_MIN
1606#endif
1607#ifdef LDBL_EPSILON
1608#undef LDBL_EPSILON
1609#endif
1610#endif
1611
ec193bec
JH
1612/* Background: in most systems the low byte of the wait status
1613 * is the signal (the lowest 7 bits) and the coredump flag is
1614 * the eight bit, and the second lowest byte is the exit status.
1615 * BeOS bucks the trend and has the bytes in different order.
1616 * See beos/beos.c for how the reality is bent even in BeOS
1617 * to follow the traditional. However, to make the POSIX
1618 * wait W*() macros to work in BeOS, we need to unbend the
1619 * reality back in place. --jhi */
17028706
IW
1620/* In actual fact the code below is to blame here. Perl has an internal
1621 * representation of the exit status ($?), which it re-composes from the
1622 * OS's representation using the W*() POSIX macros. The code below
1623 * incorrectly uses the W*() macros on the internal representation,
1624 * which fails for OSs that have a different representation (namely BeOS
1625 * and Haiku). WMUNGE() is a hack that converts the internal
1626 * representation into the OS specific one, so that the W*() macros work
1627 * as expected. The better solution would be not to use the W*() macros
1628 * in the first place, though. -- Ingo Weinhold
1629 */
b6c36746 1630#if defined(__HAIKU__)
ec193bec
JH
1631# define WMUNGE(x) (((x) & 0xFF00) >> 8 | ((x) & 0x00FF) << 8)
1632#else
1633# define WMUNGE(x) (x)
1634#endif
1635
8990e307 1636static int
4b48cf39 1637not_here(const char *s)
8990e307
LW
1638{
1639 croak("POSIX::%s not implemented on this architecture", s);
1640 return -1;
1641}
463ee0b2 1642
1cb0fb50 1643#include "const-c.inc"
a290f238 1644
1dfe7606 1645static void
40b7a5f5 1646restore_sigmask(pTHX_ SV *osset_sv)
1dfe7606 1647{
7feb700b
JH
1648 /* Fortunately, restoring the signal mask can't fail, because
1649 * there's nothing we can do about it if it does -- we're not
1650 * supposed to return -1 from sigaction unless the disposition
1651 * was unaffected.
1652 */
30b42e09 1653#if !(defined(__amigaos4__) && defined(__NEWLIB__))
7feb700b
JH
1654 sigset_t *ossetp = (sigset_t *) SvPV_nolen( osset_sv );
1655 (void)sigprocmask(SIG_SETMASK, ossetp, (sigset_t *)0);
30b42e09 1656#endif
1dfe7606 1657}
1658
a2261f90
NC
1659static void *
1660allocate_struct(pTHX_ SV *rv, const STRLEN size, const char *packname) {
1661 SV *const t = newSVrv(rv, packname);
1662 void *const p = sv_grow(t, size + 1);
1663
1664 SvCUR_set(t, size);
1665 SvPOK_on(t);
1666 return p;
1667}
1668
81ab4c44
SH
1669#ifdef WIN32
1670
1671/*
1672 * (1) The CRT maintains its own copy of the environment, separate from
1673 * the Win32API copy.
1674 *
1675 * (2) CRT getenv() retrieves from this copy. CRT putenv() updates this
1676 * copy, and then calls SetEnvironmentVariableA() to update the Win32API
1677 * copy.
1678 *
1679 * (3) win32_getenv() and win32_putenv() call GetEnvironmentVariableA() and
1680 * SetEnvironmentVariableA() directly, bypassing the CRT copy of the
1681 * environment.
1682 *
1683 * (4) The CRT strftime() "%Z" implementation calls __tzset(). That
1684 * calls CRT tzset(), but only the first time it is called, and in turn
1685 * that uses CRT getenv("TZ") to retrieve the timezone info from the CRT
1686 * local copy of the environment and hence gets the original setting as
1687 * perl never updates the CRT copy when assigning to $ENV{TZ}.
1688 *
1689 * Therefore, we need to retrieve the value of $ENV{TZ} and call CRT
1690 * putenv() to update the CRT copy of the environment (if it is different)
1691 * whenever we're about to call tzset().
1692 *
1693 * In addition to all that, when perl is built with PERL_IMPLICIT_SYS
1694 * defined:
1695 *
1696 * (a) Each interpreter has its own copy of the environment inside the
1697 * perlhost structure. That allows applications that host multiple
1698 * independent Perl interpreters to isolate environment changes from
1699 * each other. (This is similar to how the perlhost mechanism keeps a
1700 * separate working directory for each Perl interpreter, so that calling
1701 * chdir() will not affect other interpreters.)
1702 *
1703 * (b) Only the first Perl interpreter instantiated within a process will
1704 * "write through" environment changes to the process environment.
1705 *
1706 * (c) Even the primary Perl interpreter won't update the CRT copy of the
1707 * the environment, only the Win32API copy (it calls win32_putenv()).
1708 *
1709 * As with CPerlHost::Getenv() and CPerlHost::Putenv() themselves, it makes
1710 * sense to only update the process environment when inside the main
1711 * interpreter, but we don't have access to CPerlHost's m_bTopLevel member
1712 * from here so we'll just have to check PL_curinterp instead.
1713 *
1714 * Therefore, we can simply #undef getenv() and putenv() so that those names
1715 * always refer to the CRT functions, and explicitly call win32_getenv() to
1716 * access perl's %ENV.
1717 *
1718 * We also #undef malloc() and free() to be sure we are using the CRT
1719 * functions otherwise under PERL_IMPLICIT_SYS they are redefined to calls
1720 * into VMem::Malloc() and VMem::Free() and all allocations will be freed
1721 * when the Perl interpreter is being destroyed so we'd end up with a pointer
1722 * into deallocated memory in environ[] if a program embedding a Perl
1723 * interpreter continues to operate even after the main Perl interpreter has
1724 * been destroyed.
1725 *
1726 * Note that we don't free() the malloc()ed memory unless and until we call
1727 * malloc() again ourselves because the CRT putenv() function simply puts its
b7b1e41b 1728 * pointer argument into the environ[] array (it doesn't make a copy of it)
81ab4c44
SH
1729 * so this memory must otherwise be leaked.
1730 */
1731
1732#undef getenv
1733#undef putenv
1734#undef malloc
1735#undef free
1736
1737static void
1738fix_win32_tzenv(void)
1739{
1740 static char* oldenv = NULL;
1741 char* newenv;
1742 const char* perl_tz_env = win32_getenv("TZ");
1743 const char* crt_tz_env = getenv("TZ");
1744 if (perl_tz_env == NULL)
1745 perl_tz_env = "";
1746 if (crt_tz_env == NULL)
1747 crt_tz_env = "";
1748 if (strcmp(perl_tz_env, crt_tz_env) != 0) {
1749 newenv = (char*)malloc((strlen(perl_tz_env) + 4) * sizeof(char));
1750 if (newenv != NULL) {
1751 sprintf(newenv, "TZ=%s", perl_tz_env);
1752 putenv(newenv);
1753 if (oldenv != NULL)
1754 free(oldenv);
1755 oldenv = newenv;
1756 }
1757 }
1758}
1759
1760#endif
1761
1762/*
1763 * my_tzset - wrapper to tzset() with a fix to make it work (better) on Win32.
1764 * This code is duplicated in the Time-Piece module, so any changes made here
1765 * should be made there too.
1766 */
1767static void
1768my_tzset(pTHX)
1769{
1770#ifdef WIN32
1771#if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
1772 if (PL_curinterp == aTHX)
1773#endif
1774 fix_win32_tzenv();
1775#endif
1776 tzset();
1777}
1778
fb52dbc1
NC
1779typedef int (*isfunc_t)(int);
1780typedef void (*any_dptr_t)(void *);
1781
1782/* This needs to be ALIASed in a custom way, hence can't easily be defined as
1783 a regular XSUB. */
1784static XSPROTO(is_common); /* prototype to pass -Wmissing-prototypes */
1785static XSPROTO(is_common)
1786{
1787 dXSARGS;
2da736a2 1788
fb52dbc1
NC
1789 if (items != 1)
1790 croak_xs_usage(cv, "charstring");
1791
1792 {
1793 dXSTARG;
1794 STRLEN len;
31e107a4
KW
1795 /*int RETVAL = 0; YYY means uncomment this to return false on an
1796 * empty string input */
fb52dbc1
NC
1797 int RETVAL;
1798 unsigned char *s = (unsigned char *) SvPV(ST(0), len);
1799 unsigned char *e = s + len;
1800 isfunc_t isfunc = (isfunc_t) XSANY.any_dptr;
1801
2da736a2
KW
1802 if (ckWARN_d(WARN_DEPRECATED)) {
1803
1804 /* Warn exactly once for each lexical place this function is
1805 * called. See thread at
1806 * http://markmail.org/thread/jhqcag5njmx7jpyu */
1807
5c45bbe0
TC
1808 HV *warned = get_hv("POSIX::_warned", GV_ADD | GV_ADDMULTI);
1809 if (! hv_exists(warned, (const char *)&PL_op, sizeof(PL_op))) {
2da736a2
KW
1810 Perl_warner(aTHX_ packWARN(WARN_DEPRECATED),
1811 "Calling POSIX::%"HEKf"() is deprecated",
1812 HEKfARG(GvNAME_HEK(CvGV(cv))));
f0c80be3 1813 (void)hv_store(warned, (const char *)&PL_op, sizeof(PL_op), &PL_sv_yes, 0);
2da736a2
KW
1814 }
1815 }
1816
31e107a4 1817 /*if (e > s) { YYY */
fb52dbc1
NC
1818 for (RETVAL = 1; RETVAL && s < e; s++)
1819 if (!isfunc(*s))
1820 RETVAL = 0;
31e107a4 1821 /*} YYY */
fb52dbc1
NC
1822 XSprePUSH;
1823 PUSHi((IV)RETVAL);
1824 }
1825 XSRETURN(1);
1826}
1827
1828MODULE = POSIX PACKAGE = POSIX
1829
1830BOOT:
1831{
1832 CV *cv;
fb52dbc1 1833
df164f52
DM
1834
1835 /* silence compiler warning about not_here() defined but not used */
1836 if (0) not_here("");
1837
fb52dbc1
NC
1838 /* Ensure we get the function, not a macro implementation. Like the C89
1839 standard says we can... */
1840#undef isalnum
42c07143 1841 cv = newXS_deffile("POSIX::isalnum", is_common);
fb52dbc1
NC
1842 XSANY.any_dptr = (any_dptr_t) &isalnum;
1843#undef isalpha
42c07143 1844 cv = newXS_deffile("POSIX::isalpha", is_common);
fb52dbc1
NC
1845 XSANY.any_dptr = (any_dptr_t) &isalpha;
1846#undef iscntrl
42c07143 1847 cv = newXS_deffile("POSIX::iscntrl", is_common);
fb52dbc1
NC
1848 XSANY.any_dptr = (any_dptr_t) &iscntrl;
1849#undef isdigit
42c07143 1850 cv = newXS_deffile("POSIX::isdigit", is_common);
fb52dbc1
NC
1851 XSANY.any_dptr = (any_dptr_t) &isdigit;
1852#undef isgraph
42c07143 1853 cv = newXS_deffile("POSIX::isgraph", is_common);
fb52dbc1
NC
1854 XSANY.any_dptr = (any_dptr_t) &isgraph;
1855#undef islower
42c07143 1856 cv = newXS_deffile("POSIX::islower", is_common);
fb52dbc1
NC
1857 XSANY.any_dptr = (any_dptr_t) &islower;
1858#undef isprint
42c07143 1859 cv = newXS_deffile("POSIX::isprint", is_common);
fb52dbc1
NC
1860 XSANY.any_dptr = (any_dptr_t) &isprint;
1861#undef ispunct
42c07143 1862 cv = newXS_deffile("POSIX::ispunct", is_common);
fb52dbc1
NC
1863 XSANY.any_dptr = (any_dptr_t) &ispunct;
1864#undef isspace
42c07143 1865 cv = newXS_deffile("POSIX::isspace", is_common);
fb52dbc1
NC
1866 XSANY.any_dptr = (any_dptr_t) &isspace;
1867#undef isupper
42c07143 1868 cv = newXS_deffile("POSIX::isupper", is_common);
fb52dbc1
NC
1869 XSANY.any_dptr = (any_dptr_t) &isupper;
1870#undef isxdigit
42c07143 1871 cv = newXS_deffile("POSIX::isxdigit", is_common);
fb52dbc1
NC
1872 XSANY.any_dptr = (any_dptr_t) &isxdigit;
1873}
1874
2304df62
AD
1875MODULE = SigSet PACKAGE = POSIX::SigSet PREFIX = sig
1876
92b39396 1877void
2304df62 1878new(packname = "POSIX::SigSet", ...)
d3f5e399 1879 const char * packname
2304df62
AD
1880 CODE:
1881 {
1882 int i;
92b39396
NC
1883 sigset_t *const s
1884 = (sigset_t *) allocate_struct(aTHX_ (ST(0) = sv_newmortal()),
1885 sizeof(sigset_t),
1886 packname);
1887 sigemptyset(s);
a0d0e21e 1888 for (i = 1; i < items; i++)
92b39396
NC
1889 sigaddset(s, SvIV(ST(i)));
1890 XSRETURN(1);
2304df62 1891 }
2304df62
AD
1892
1893SysRet
df6c2df2 1894addset(sigset, sig)
2304df62
AD
1895 POSIX::SigSet sigset
1896 int sig
df6c2df2
NC
1897 ALIAS:
1898 delset = 1
1899 CODE:
1900 RETVAL = ix ? sigdelset(sigset, sig) : sigaddset(sigset, sig);
1901 OUTPUT:
1902 RETVAL
2304df62
AD
1903
1904SysRet
df6c2df2 1905emptyset(sigset)
2304df62 1906 POSIX::SigSet sigset
df6c2df2
NC
1907 ALIAS:
1908 fillset = 1
1909 CODE:
1910 RETVAL = ix ? sigfillset(sigset) : sigemptyset(sigset);
1911 OUTPUT:
1912 RETVAL
2304df62
AD
1913
1914int
1915sigismember(sigset, sig)
1916 POSIX::SigSet sigset
1917 int sig
1918
a0d0e21e
LW
1919MODULE = Termios PACKAGE = POSIX::Termios PREFIX = cf
1920
11a39fe4 1921void
a0d0e21e 1922new(packname = "POSIX::Termios", ...)
d3f5e399 1923 const char * packname
a0d0e21e
LW
1924 CODE:
1925 {
1926#ifdef I_TERMIOS
a2261f90
NC
1927 void *const p = allocate_struct(aTHX_ (ST(0) = sv_newmortal()),
1928 sizeof(struct termios), packname);
11a39fe4
NC
1929 /* The previous implementation stored a pointer to an uninitialised
1930 struct termios. Seems safer to initialise it, particularly as
1931 this implementation exposes the struct to prying from perl-space.
1932 */
a2261f90 1933 memset(p, 0, 1 + sizeof(struct termios));
11a39fe4 1934 XSRETURN(1);
a0d0e21e
LW
1935#else
1936 not_here("termios");
1937#endif
1938 }
a0d0e21e
LW
1939
1940SysRet
1941getattr(termios_ref, fd = 0)
1942 POSIX::Termios termios_ref
1943 int fd
1944 CODE:
1945 RETVAL = tcgetattr(fd, termios_ref);
1946 OUTPUT:
1947 RETVAL
1948
e08f19f5
TC
1949# If we define TCSANOW here then both a found and not found constant sub
1950# are created causing a Constant subroutine TCSANOW redefined warning
518487b2 1951#ifndef TCSANOW
e08f19f5
TC
1952# define DEF_SETATTR_ACTION 0
1953#else
1954# define DEF_SETATTR_ACTION TCSANOW
518487b2 1955#endif
a0d0e21e 1956SysRet
e08f19f5 1957setattr(termios_ref, fd = 0, optional_actions = DEF_SETATTR_ACTION)
a0d0e21e
LW
1958 POSIX::Termios termios_ref
1959 int fd
1960 int optional_actions
1961 CODE:
8481e3d3
JH
1962 if (fd >= 0) {
1963 /* The second argument to the call is mandatory, but we'd like to give
1964 it a useful default. 0 isn't valid on all operating systems - on
1965 Solaris (at least) TCSANOW, TCSADRAIN and TCSAFLUSH have the same
1966 values as the equivalent ioctls, TCSETS, TCSETSW and TCSETSF. */
66cf59b4
JH
1967 if (optional_actions < 0) {
1968 SETERRNO(EINVAL, LIB_INVARG);
1969 RETVAL = -1;
1970 } else {
1971 RETVAL = tcsetattr(fd, optional_actions, termios_ref);
1972 }
8481e3d3
JH
1973 } else {
1974 SETERRNO(EBADF,RMS_IFI);
1975 RETVAL = -1;
1976 }
a0d0e21e
LW
1977 OUTPUT:
1978 RETVAL
1979
1980speed_t
2a59a32c 1981getispeed(termios_ref)
a0d0e21e 1982 POSIX::Termios termios_ref
2a59a32c
NC
1983 ALIAS:
1984 getospeed = 1
a0d0e21e 1985 CODE:
2a59a32c 1986 RETVAL = ix ? cfgetospeed(termios_ref) : cfgetispeed(termios_ref);
a0d0e21e
LW
1987 OUTPUT:
1988 RETVAL
1989
1990tcflag_t
2a59a32c 1991getiflag(termios_ref)
a0d0e21e 1992 POSIX::Termios termios_ref
2a59a32c
NC
1993 ALIAS:
1994 getoflag = 1
1995 getcflag = 2
1996 getlflag = 3
a0d0e21e
LW
1997 CODE:
1998#ifdef I_TERMIOS /* References a termios structure member so ifdef it out. */
2a59a32c
NC
1999 switch(ix) {
2000 case 0:
2001 RETVAL = termios_ref->c_iflag;
2002 break;
2003 case 1:
2004 RETVAL = termios_ref->c_oflag;
2005 break;
2006 case 2:
2007 RETVAL = termios_ref->c_cflag;
2008 break;
2009 case 3:
2010 RETVAL = termios_ref->c_lflag;
2011 break;
df164f52
DM
2012 default:
2013 RETVAL = 0; /* silence compiler warning */
2a59a32c 2014 }
a0d0e21e 2015#else
2a59a32c
NC
2016 not_here(GvNAME(CvGV(cv)));
2017 RETVAL = 0;
a0d0e21e
LW
2018#endif
2019 OUTPUT:
2020 RETVAL
2021
2022cc_t
2023getcc(termios_ref, ccix)
2024 POSIX::Termios termios_ref
b56fc9ec 2025 unsigned int ccix
a0d0e21e
LW
2026 CODE:
2027#ifdef I_TERMIOS /* References a termios structure member so ifdef it out. */
2028 if (ccix >= NCCS)
2029 croak("Bad getcc subscript");
2030 RETVAL = termios_ref->c_cc[ccix];
2031#else
640cc986
HM
2032 not_here("getcc");
2033 RETVAL = 0;
a0d0e21e
LW
2034#endif
2035 OUTPUT:
2036 RETVAL
2037
2038SysRet
2a59a32c 2039setispeed(termios_ref, speed)
a0d0e21e
LW
2040 POSIX::Termios termios_ref
2041 speed_t speed
2a59a32c
NC
2042 ALIAS:
2043 setospeed = 1
a0d0e21e 2044 CODE:
2a59a32c
NC
2045 RETVAL = ix
2046 ? cfsetospeed(termios_ref, speed) : cfsetispeed(termios_ref, speed);
2047 OUTPUT:
2048 RETVAL
a0d0e21e
LW
2049
2050void
2a59a32c 2051setiflag(termios_ref, flag)
a0d0e21e 2052 POSIX::Termios termios_ref
2a59a32c
NC
2053 tcflag_t flag
2054 ALIAS:
2055 setoflag = 1
2056 setcflag = 2
2057 setlflag = 3
a0d0e21e
LW
2058 CODE:
2059#ifdef I_TERMIOS /* References a termios structure member so ifdef it out. */
2a59a32c
NC
2060 switch(ix) {
2061 case 0:
2062 termios_ref->c_iflag = flag;
2063 break;
2064 case 1:
2065 termios_ref->c_oflag = flag;
2066 break;
2067 case 2:
2068 termios_ref->c_cflag = flag;
2069 break;
2070 case 3:
2071 termios_ref->c_lflag = flag;
2072 break;
2073 }
a0d0e21e 2074#else
2a59a32c 2075 not_here(GvNAME(CvGV(cv)));
a0d0e21e
LW
2076#endif
2077
2078void
2079setcc(termios_ref, ccix, cc)
2080 POSIX::Termios termios_ref
b56fc9ec 2081 unsigned int ccix
a0d0e21e
LW
2082 cc_t cc
2083 CODE:
2084#ifdef I_TERMIOS /* References a termios structure member so ifdef it out. */
2085 if (ccix >= NCCS)
2086 croak("Bad setcc subscript");
2087 termios_ref->c_cc[ccix] = cc;
2088#else
2089 not_here("setcc");
2090#endif
2091
2092
a0d0e21e
LW
2093MODULE = POSIX PACKAGE = POSIX
2094
1cb0fb50 2095INCLUDE: const-xs.inc
a290f238 2096
e99d581a
NC
2097int
2098WEXITSTATUS(status)
2099 int status
72bfe1b2
NC
2100 ALIAS:
2101 POSIX::WIFEXITED = 1
2102 POSIX::WIFSIGNALED = 2
2103 POSIX::WIFSTOPPED = 3
2104 POSIX::WSTOPSIG = 4
2105 POSIX::WTERMSIG = 5
2106 CODE:
fabb67aa
SK
2107#if !defined(WEXITSTATUS) || !defined(WIFEXITED) || !defined(WIFSIGNALED) \
2108 || !defined(WIFSTOPPED) || !defined(WSTOPSIG) || !defined(WTERMSIG)
19c4478c
NC
2109 RETVAL = 0; /* Silence compilers that notice this, but don't realise
2110 that not_here() can't return. */
2111#endif
72bfe1b2
NC
2112 switch(ix) {
2113 case 0:
d49025b7 2114#ifdef WEXITSTATUS
17028706 2115 RETVAL = WEXITSTATUS(WMUNGE(status));
d49025b7
NC
2116#else
2117 not_here("WEXITSTATUS");
2118#endif
72bfe1b2
NC
2119 break;
2120 case 1:
d49025b7 2121#ifdef WIFEXITED
17028706 2122 RETVAL = WIFEXITED(WMUNGE(status));
d49025b7
NC
2123#else
2124 not_here("WIFEXITED");
2125#endif
72bfe1b2
NC
2126 break;
2127 case 2:
d49025b7 2128#ifdef WIFSIGNALED
17028706 2129 RETVAL = WIFSIGNALED(WMUNGE(status));
d49025b7
NC
2130#else
2131 not_here("WIFSIGNALED");
2132#endif
72bfe1b2
NC
2133 break;
2134 case 3:
d49025b7 2135#ifdef WIFSTOPPED
17028706 2136 RETVAL = WIFSTOPPED(WMUNGE(status));
d49025b7
NC
2137#else
2138 not_here("WIFSTOPPED");
2139#endif
72bfe1b2
NC
2140 break;
2141 case 4:
d49025b7 2142#ifdef WSTOPSIG
17028706 2143 RETVAL = WSTOPSIG(WMUNGE(status));
d49025b7
NC
2144#else
2145 not_here("WSTOPSIG");
2146#endif
72bfe1b2
NC
2147 break;
2148 case 5:
d49025b7 2149#ifdef WTERMSIG
17028706 2150 RETVAL = WTERMSIG(WMUNGE(status));
d49025b7
NC
2151#else
2152 not_here("WTERMSIG");
2153#endif
72bfe1b2
NC
2154 break;
2155 default:
42c07143 2156 croak("Illegal alias %d for POSIX::W*", (int)ix);
72bfe1b2
NC
2157 }
2158 OUTPUT:
2159 RETVAL
2304df62 2160
2304df62
AD
2161SysRet
2162open(filename, flags = O_RDONLY, mode = 0666)
2163 char * filename
2164 int flags
a0d0e21e 2165 Mode_t mode
748a9306
LW
2166 CODE:
2167 if (flags & (O_APPEND|O_CREAT|O_TRUNC|O_RDWR|O_WRONLY|O_EXCL))
2168 TAINT_PROPER("open");
2169 RETVAL = open(filename, flags, mode);
2170 OUTPUT:
2171 RETVAL
2172
2304df62
AD
2173
2174HV *
2175localeconv()
2176 CODE:
3f3bcbfc
KW
2177#ifndef HAS_LOCALECONV
2178 localeconv(); /* A stub to call not_here(). */
2179#else
2304df62 2180 struct lconv *lcbuf;
a835cd47
KW
2181
2182 /* localeconv() deals with both LC_NUMERIC and LC_MONETARY, but
2183 * LC_MONETARY is already in the correct locale */
67d796ae
KW
2184 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
2185 STORE_LC_NUMERIC_FORCE_TO_UNDERLYING();
a835cd47 2186
2304df62 2187 RETVAL = newHV();
c4e79b56 2188 sv_2mortal((SV*)RETVAL);
8063af02 2189 if ((lcbuf = localeconv())) {
2f0945cb
NC
2190 const struct lconv_offset *strings = lconv_strings;
2191 const struct lconv_offset *integers = lconv_integers;
2192 const char *ptr = (const char *) lcbuf;
2193
e3bf3304 2194 while (strings->name) {
c1284011
KW
2195 /* This string may be controlled by either LC_NUMERIC, or
2196 * LC_MONETARY */
2197 bool is_utf8_locale
2198#if defined(USE_LOCALE_NUMERIC) && defined(USE_LOCALE_MONETARY)
2199 = _is_cur_LC_category_utf8((isLC_NUMERIC_STRING(strings->name))
2200 ? LC_NUMERIC
2201 : LC_MONETARY);
2202#elif defined(USE_LOCALE_NUMERIC)
2203 = _is_cur_LC_category_utf8(LC_NUMERIC);
2204#elif defined(USE_LOCALE_MONETARY)
2205 = _is_cur_LC_category_utf8(LC_MONETARY);
2206#else
2207 = FALSE;
2208#endif
2209
2f0945cb
NC
2210 const char *value = *((const char **)(ptr + strings->offset));
2211
c1284011
KW
2212 if (value && *value) {
2213 (void) hv_store(RETVAL,
2214 strings->name,
2215 strlen(strings->name),
2216 newSVpvn_utf8(value,
2217 strlen(value),
2218
2219 /* We mark it as UTF-8 if a utf8 locale
9f10db87 2220 * and is valid and variant under UTF-8 */
c1284011 2221 is_utf8_locale
9f10db87 2222 && ! is_invariant_string((U8 *) value, 0)
c1284011
KW
2223 && is_utf8_string((U8 *) value, 0)),
2224 0);
e3bf3304
KW
2225 }
2226 strings++;
2227 }
2f0945cb 2228
e3bf3304 2229 while (integers->name) {
2f0945cb
NC
2230 const char value = *((const char *)(ptr + integers->offset));
2231
2232 if (value != CHAR_MAX)
2233 (void) hv_store(RETVAL, integers->name,
2234 strlen(integers->name), newSViv(value), 0);
e3bf3304
KW
2235 integers++;
2236 }
2304df62 2237 }
67d796ae 2238 RESTORE_LC_NUMERIC_STANDARD();
3f3bcbfc 2239#endif /* HAS_LOCALECONV */
2304df62
AD
2240 OUTPUT:
2241 RETVAL
2242
2243char *
c28ee57b 2244setlocale(category, locale = 0)
2304df62 2245 int category
8e70cf7a 2246 const char * locale
1ba01ae3
SH
2247 PREINIT:
2248 char * retval;
c28ee57b 2249 CODE:
49efabc8
KW
2250#ifdef USE_LOCALE_NUMERIC
2251 /* A 0 (or NULL) locale means only query what the current one is. We
2252 * have the LC_NUMERIC name saved, because we are normally switched
2253 * into the C locale for it. Switch back so an LC_ALL query will yield
2254 * the correct results; all other categories don't require special
2255 * handling */
2256 if (locale == 0) {
2257 if (category == LC_NUMERIC) {
2258 XSRETURN_PV(PL_numeric_name);
2259 }
2260# ifdef LC_ALL
2261 else if (category == LC_ALL) {
67d796ae 2262 SET_NUMERIC_UNDERLYING();
49efabc8
KW
2263 }
2264# endif
2265 }
2266#endif
b385bb4d
KW
2267#ifdef WIN32 /* Use wrapper on Windows */
2268 retval = Perl_my_setlocale(aTHX_ category, locale);
2269#else
1ba01ae3 2270 retval = setlocale(category, locale);
b385bb4d 2271#endif
bbc98134
KW
2272 DEBUG_L(PerlIO_printf(Perl_debug_log,
2273 "%s:%d: %s\n", __FILE__, __LINE__,
2274 _setlocale_debug_string(category, locale, retval)));
fbd840df 2275 if (! retval) {
49efabc8
KW
2276 /* Should never happen that a query would return an error, but be
2277 * sure and reset to C locale */
2278 if (locale == 0) {
2279 SET_NUMERIC_STANDARD();
2280 }
fbd840df
KW
2281 XSRETURN_UNDEF;
2282 }
49efabc8
KW
2283
2284 /* Save retval since subsequent setlocale() calls may overwrite it. */
2285 retval = savepv(retval);
2286
67d796ae
KW
2287 /* For locale == 0, we may have switched to NUMERIC_UNDERLYING. Switch
2288 * back */
49efabc8
KW
2289 if (locale == 0) {
2290 SET_NUMERIC_STANDARD();
2291 XSRETURN_PV(retval);
2292 }
fbd840df 2293 else {
49efabc8 2294 RETVAL = retval;
36477c24 2295#ifdef USE_LOCALE_CTYPE
bbce6d69
PP
2296 if (category == LC_CTYPE
2297#ifdef LC_ALL
2298 || category == LC_ALL
2299#endif
2300 )
2301 {
2302 char *newctype;
2303#ifdef LC_ALL
bbc98134 2304 if (category == LC_ALL) {
bbce6d69 2305 newctype = setlocale(LC_CTYPE, NULL);
bbc98134
KW
2306 DEBUG_Lv(PerlIO_printf(Perl_debug_log,
2307 "%s:%d: %s\n", __FILE__, __LINE__,
2308 _setlocale_debug_string(LC_CTYPE, NULL, newctype)));
2309 }
bbce6d69
PP
2310 else
2311#endif
2312 newctype = RETVAL;
864dbfa3 2313 new_ctype(newctype);
bbce6d69 2314 }
36477c24
PP
2315#endif /* USE_LOCALE_CTYPE */
2316#ifdef USE_LOCALE_COLLATE
bbce6d69
PP
2317 if (category == LC_COLLATE
2318#ifdef LC_ALL
2319 || category == LC_ALL
2320#endif
2321 )
2322 {
2323 char *newcoll;
2324#ifdef LC_ALL
bbc98134 2325 if (category == LC_ALL) {
bbce6d69 2326 newcoll = setlocale(LC_COLLATE, NULL);
bbc98134
KW
2327 DEBUG_Lv(PerlIO_printf(Perl_debug_log,
2328 "%s:%d: %s\n", __FILE__, __LINE__,
2329 _setlocale_debug_string(LC_COLLATE, NULL, newcoll)));
2330 }
bbce6d69
PP
2331 else
2332#endif
2333 newcoll = RETVAL;
864dbfa3 2334 new_collate(newcoll);
bbce6d69 2335 }
36477c24
PP
2336#endif /* USE_LOCALE_COLLATE */
2337#ifdef USE_LOCALE_NUMERIC
bbce6d69
PP
2338 if (category == LC_NUMERIC
2339#ifdef LC_ALL
2340 || category == LC_ALL
2341#endif
2342 )
2343 {
2344 char *newnum;
2345#ifdef LC_ALL
bbc98134 2346 if (category == LC_ALL) {
bbce6d69 2347 newnum = setlocale(LC_NUMERIC, NULL);
bbc98134
KW
2348 DEBUG_Lv(PerlIO_printf(Perl_debug_log,
2349 "%s:%d: %s\n", __FILE__, __LINE__,
2350 _setlocale_debug_string(LC_NUMERIC, NULL, newnum)));
2351 }
bbce6d69
PP
2352 else
2353#endif
2354 newnum = RETVAL;
864dbfa3 2355 new_numeric(newnum);
bbce6d69 2356 }
36477c24 2357#endif /* USE_LOCALE_NUMERIC */
bbce6d69 2358 }
c28ee57b
JH
2359 OUTPUT:
2360 RETVAL
1ba01ae3 2361 CLEANUP:
fbd840df 2362 Safefree(RETVAL);
2304df62 2363
e1ca407b 2364NV
2304df62 2365acos(x)
e1ca407b 2366 NV x
b256643b 2367 ALIAS:
7965edec
JH
2368 acosh = 1
2369 asin = 2
2370 asinh = 3
2371 atan = 4
2372 atanh = 5
2373 cbrt = 6
2374 ceil = 7
2375 cosh = 8
2376 erf = 9
2377 erfc = 10
2378 exp2 = 11
2379 expm1 = 12
2380 floor = 13
2381 j0 = 14
2382 j1 = 15
2383 lgamma = 16
2384 log10 = 17
2385 log1p = 18
2386 log2 = 19
2387 logb = 20
2388 nearbyint = 21
2389 rint = 22
2390 round = 23
2391 sinh = 24
2392 tan = 25
2393 tanh = 26
2394 tgamma = 27
2395 trunc = 28
2396 y0 = 29
2397 y1 = 30
b256643b 2398 CODE:
7f4bfd0b 2399 PERL_UNUSED_VAR(x);
78a0541a 2400 RETVAL = NV_NAN;
b256643b
NC
2401 switch (ix) {
2402 case 0:
8a00eddc 2403 RETVAL = Perl_acos(x); /* C89 math */
b256643b
NC
2404 break;
2405 case 1:
5716d070 2406#ifdef c99_acosh
7965edec 2407 RETVAL = c99_acosh(x);
5716d070
JH
2408#else
2409 not_here("acosh");
2410#endif
b256643b
NC
2411 break;
2412 case 2:
8a00eddc 2413 RETVAL = Perl_asin(x); /* C89 math */
b256643b
NC
2414 break;
2415 case 3:
5716d070 2416#ifdef c99_asinh
7965edec 2417 RETVAL = c99_asinh(x);
5716d070
JH
2418#else
2419 not_here("asinh");
2420#endif
b256643b
NC
2421 break;
2422 case 4:
8a00eddc 2423 RETVAL = Perl_atan(x); /* C89 math */
b256643b
NC
2424 break;
2425 case 5:
5716d070 2426#ifdef c99_atanh
7965edec 2427 RETVAL = c99_atanh(x);
5716d070
JH
2428#else
2429 not_here("atanh");
2430#endif
b256643b
NC
2431 break;
2432 case 6:
5716d070 2433#ifdef c99_cbrt
7965edec 2434 RETVAL = c99_cbrt(x);
5716d070
JH
2435#else
2436 not_here("cbrt");
2437#endif
b256643b
NC
2438 break;
2439 case 7:
8a00eddc 2440 RETVAL = Perl_ceil(x); /* C89 math */
b256643b
NC
2441 break;
2442 case 8:
8a00eddc 2443 RETVAL = Perl_cosh(x); /* C89 math */
7965edec
JH
2444 break;
2445 case 9:
5716d070 2446#ifdef c99_erf
7965edec 2447 RETVAL = c99_erf(x);
5716d070
JH
2448#else
2449 not_here("erf");
2450#endif
7965edec
JH
2451 break;
2452 case 10:
5716d070 2453#ifdef c99_erfc
d5799f37 2454 RETVAL = c99_erfc(x);
5716d070
JH
2455#else
2456 not_here("erfc");
2457#endif
7965edec
JH
2458 break;
2459 case 11:
5716d070 2460#ifdef c99_exp2
7965edec 2461 RETVAL = c99_exp2(x);
5716d070
JH
2462#else
2463 not_here("exp2");
2464#endif
7965edec
JH
2465 break;
2466 case 12:
5716d070 2467#ifdef c99_expm1
7965edec 2468 RETVAL = c99_expm1(x);
5716d070
JH
2469#else
2470 not_here("expm1");
2471#endif
7965edec
JH
2472 break;
2473 case 13:
8a00eddc 2474 RETVAL = Perl_floor(x); /* C89 math */
7965edec
JH
2475 break;
2476 case 14:
5716d070 2477#ifdef bessel_j0
7965edec 2478 RETVAL = bessel_j0(x);
5716d070 2479#else
85c93440 2480 not_here("j0");
5716d070 2481#endif
7965edec
JH
2482 break;
2483 case 15:
5716d070 2484#ifdef bessel_j1
7965edec 2485 RETVAL = bessel_j1(x);
5716d070 2486#else
85c93440 2487 not_here("j1");
5716d070 2488#endif
7965edec
JH
2489 break;
2490 case 16:
2e9cdb62 2491 /* XXX Note: the lgamma modifies a global variable (signgam),
d334ccbe 2492 * which is evil. Some platforms have lgamma_r, which has
2e9cdb62 2493 * extra output parameter instead of the global variable. */
5716d070 2494#ifdef c99_lgamma
7965edec 2495 RETVAL = c99_lgamma(x);
5716d070
JH
2496#else
2497 not_here("lgamma");
2498#endif
7965edec
JH
2499 break;
2500 case 17:
5716d070 2501 RETVAL = log10(x); /* C89 math */
7965edec
JH
2502 break;
2503 case 18:
5716d070 2504#ifdef c99_log1p
7965edec 2505 RETVAL = c99_log1p(x);
5716d070
JH
2506#else
2507 not_here("log1p");
2508#endif
7965edec
JH
2509 break;
2510 case 19:
5716d070 2511#ifdef c99_log2
7965edec 2512 RETVAL = c99_log2(x);
5716d070
JH
2513#else
2514 not_here("log2");
2515#endif
7965edec
JH
2516 break;
2517 case 20:
5716d070 2518#ifdef c99_logb
7965edec 2519 RETVAL = c99_logb(x);
eec978e5
JH
2520#elif defined(c99_log2) && FLT_RADIX == 2
2521 RETVAL = Perl_floor(c99_log2(PERL_ABS(x)));
5716d070
JH
2522#else
2523 not_here("logb");
2524#endif
7965edec
JH
2525 break;
2526 case 21:
5716d070 2527#ifdef c99_nearbyint
7965edec 2528 RETVAL = c99_nearbyint(x);
5716d070
JH
2529#else
2530 not_here("nearbyint");
2531#endif
7965edec
JH
2532 break;
2533 case 22:
5716d070 2534#ifdef c99_rint
7965edec 2535 RETVAL = c99_rint(x);
5716d070
JH
2536#else
2537 not_here("rint");
2538#endif
7965edec
JH
2539 break;
2540 case 23:
5716d070 2541#ifdef c99_round
7965edec 2542 RETVAL = c99_round(x);
5716d070
JH
2543#else
2544 not_here("round");
2545#endif
7965edec
JH
2546 break;
2547 case 24:
8a00eddc 2548 RETVAL = Perl_sinh(x); /* C89 math */
7965edec
JH
2549 break;
2550 case 25:
8a00eddc 2551 RETVAL = Perl_tan(x); /* C89 math */
b256643b 2552 break;
7965edec 2553 case 26:
8a00eddc 2554 RETVAL = Perl_tanh(x); /* C89 math */
7965edec
JH
2555 break;
2556 case 27:
5716d070 2557#ifdef c99_tgamma
7965edec 2558 RETVAL = c99_tgamma(x);
5716d070
JH
2559#else
2560 not_here("tgamma");
2561#endif
7965edec
JH
2562 break;
2563 case 28:
5716d070 2564#ifdef c99_trunc
7965edec 2565 RETVAL = c99_trunc(x);
5716d070
JH
2566#else
2567 not_here("trunc");
2568#endif
7965edec
JH
2569 break;
2570 case 29:
5716d070 2571#ifdef bessel_y0
7965edec 2572 RETVAL = bessel_y0(x);
5716d070 2573#else
85c93440 2574 not_here("y0");
5716d070 2575#endif
7965edec
JH
2576 break;
2577 case 30:
2578 default:
5716d070 2579#ifdef bessel_y1
7965edec 2580 RETVAL = bessel_y1(x);
5716d070 2581#else
85c93440 2582 not_here("y1");
5716d070 2583#endif
7965edec
JH
2584 }
2585 OUTPUT:
2586 RETVAL
2587
2588IV
a5713e21
JH
2589fegetround()
2590 CODE:
78a0541a 2591#ifdef HAS_FEGETROUND
d5f4f26a 2592 RETVAL = my_fegetround();
78a0541a
JH
2593#else
2594 RETVAL = -1;
a5713e21
JH
2595 not_here("fegetround");
2596#endif
2597 OUTPUT:
2598 RETVAL
2599
2600IV
2601fesetround(x)
2602 IV x
2603 CODE:
2604#ifdef HAS_FEGETROUND /* canary for fesetround */
2605 RETVAL = fesetround(x);
879d23d2 2606#elif defined(HAS_FPGETROUND) /* canary for fpsetround */
e0939537 2607 switch (x) {
e0939537
JH
2608 case FE_TONEAREST: RETVAL = fpsetround(FP_RN); break;
2609 case FE_TOWARDZERO: RETVAL = fpsetround(FP_RZ); break;
2610 case FE_DOWNWARD: RETVAL = fpsetround(FP_RM); break;
2611 case FE_UPWARD: RETVAL = fpsetround(FP_RP); break;
ebac59ac 2612 default: RETVAL = -1; break;
e0939537 2613 }
877206df
JH
2614#elif defined(__osf__) /* Tru64 */
2615 switch (x) {
2616 case FE_TONEAREST: RETVAL = write_rnd(FP_RND_RN); break;
2617 case FE_TOWARDZERO: RETVAL = write_rnd(FP_RND_RZ); break;
2618 case FE_DOWNWARD: RETVAL = write_rnd(FP_RND_RM); break;
2619 case FE_UPWARD: RETVAL = write_rnd(FP_RND_RP); break;
2620 default: RETVAL = -1; break;
2621 }
a5713e21 2622#else
7f4bfd0b 2623 PERL_UNUSED_VAR(x);
78a0541a 2624 RETVAL = -1;
a5713e21
JH
2625 not_here("fesetround");
2626#endif
2627 OUTPUT:
2628 RETVAL
2629
2630IV
7965edec
JH
2631fpclassify(x)
2632 NV x
2633 ALIAS:
2634 ilogb = 1
2635 isfinite = 2
2636 isinf = 3
2637 isnan = 4
2638 isnormal = 5
3823048b
JH
2639 lrint = 6
2640 lround = 7
2641 signbit = 8
7965edec 2642 CODE:
7f4bfd0b 2643 PERL_UNUSED_VAR(x);
78a0541a 2644 RETVAL = -1;
7965edec
JH
2645 switch (ix) {
2646 case 0:
5716d070 2647#ifdef c99_fpclassify
7965edec 2648 RETVAL = c99_fpclassify(x);
5716d070
JH
2649#else
2650 not_here("fpclassify");
2651#endif
7965edec
JH
2652 break;
2653 case 1:
5716d070 2654#ifdef c99_ilogb
7965edec 2655 RETVAL = c99_ilogb(x);
5716d070
JH
2656#else
2657 not_here("ilogb");
2658#endif
7965edec
JH
2659 break;
2660 case 2:
2661 RETVAL = Perl_isfinite(x);
2662 break;
2663 case 3:
2664 RETVAL = Perl_isinf(x);
2665 break;
2666 case 4:
2667 RETVAL = Perl_isnan(x);
2668 break;
2669 case 5:
5716d070 2670#ifdef c99_isnormal
7965edec 2671 RETVAL = c99_isnormal(x);
5716d070
JH
2672#else
2673 not_here("isnormal");
2674#endif
7965edec
JH
2675 break;
2676 case 6:
d5f4f26a
JH
2677#ifdef c99_lrint
2678 RETVAL = c99_lrint(x);
2679#else
2680 not_here("lrint");
2681#endif
2682 break;
3823048b 2683 case 7:
9e010b89
JH
2684#ifdef c99_lround
2685 RETVAL = c99_lround(x);
2686#else
2687 not_here("lround");
2688#endif
2689 break;
3823048b 2690 case 8:
7965edec 2691 default:
5716d070
JH
2692#ifdef Perl_signbit
2693 RETVAL = Perl_signbit(x);
2a7bb164
JH
2694#else
2695 RETVAL = (x < 0) || (x == -0.0);
5716d070 2696#endif
7965edec 2697 break;
b256643b
NC
2698 }
2699 OUTPUT:
2700 RETVAL
2304df62 2701
e1ca407b 2702NV
07bb61ac
JH
2703getpayload(nv)
2704 NV nv
2705 CODE:
2706 RETVAL = S_getpayload(nv);
2707 OUTPUT:
2708 RETVAL
2709
2710void
2711setpayload(nv, payload)
2712 NV nv
2713 NV payload
2714 CODE:
2715 S_setpayload(&nv, payload, FALSE);
2716 OUTPUT:
2717 nv
2718
2719void
2720setpayloadsig(nv, payload)
2721 NV nv
2722 NV payload
2723 CODE:
2724 nv = NV_NAN;
2725 S_setpayload(&nv, payload, TRUE);
2726 OUTPUT:
2727 nv
2728
2729int
2730issignaling(nv)
2731 NV nv
2732 CODE:
2733 RETVAL = Perl_isnan(nv) && NV_NAN_IS_SIGNALING(&nv);
2734 OUTPUT:
2735 RETVAL
2736
2737NV
7965edec 2738copysign(x,y)
e1ca407b
A
2739 NV x
2740 NV y
7965edec
JH
2741 ALIAS:
2742 fdim = 1
2743 fmax = 2
2744 fmin = 3
2745 fmod = 4
2746 hypot = 5
2747 isgreater = 6
2748 isgreaterequal = 7
2749 isless = 8
2750 islessequal = 9
2751 islessgreater = 10
2752 isunordered = 11
2753 nextafter = 12
2754 nexttoward = 13
2755 remainder = 14
2756 CODE:
7f4bfd0b
JH
2757 PERL_UNUSED_VAR(x);
2758 PERL_UNUSED_VAR(y);
78a0541a 2759 RETVAL = NV_NAN;
7965edec
JH
2760 switch (ix) {
2761 case 0:
5716d070 2762#ifdef c99_copysign
7965edec 2763 RETVAL = c99_copysign(x, y);
5716d070
JH
2764#else
2765 not_here("copysign");
2766#endif
7965edec
JH
2767 break;
2768 case 1:
5716d070 2769#ifdef c99_fdim
7965edec 2770 RETVAL = c99_fdim(x, y);
5716d070
JH
2771#else
2772 not_here("fdim");
2773#endif
7965edec
JH
2774 break;
2775 case 2:
5716d070 2776#ifdef c99_fmax
7965edec 2777 RETVAL = c99_fmax(x, y);
5716d070
JH
2778#else
2779 not_here("fmax");
2780#endif
7965edec
JH
2781 break;
2782 case 3:
5716d070 2783#ifdef c99_fmin
7965edec 2784 RETVAL = c99_fmin(x, y);
5716d070
JH
2785#else
2786 not_here("fmin");
2787#endif
7965edec
JH
2788 break;
2789 case 4:
8a00eddc 2790 RETVAL = Perl_fmod(x, y); /* C89 math */
7965edec
JH
2791 break;
2792 case 5:
5716d070 2793#ifdef c99_hypot
7965edec 2794 RETVAL = c99_hypot(x, y);
5716d070
JH
2795#else
2796 not_here("hypot");
2797#endif
7965edec
JH
2798 break;
2799 case 6:
5716d070 2800#ifdef c99_isgreater
7965edec 2801 RETVAL = c99_isgreater(x, y);
5716d070
JH
2802#else
2803 not_here("isgreater");
2804#endif
7965edec
JH
2805 break;
2806 case 7:
5716d070 2807#ifdef c99_isgreaterequal
7965edec 2808 RETVAL = c99_isgreaterequal(x, y);
5716d070
JH
2809#else
2810 not_here("isgreaterequal");
2811#endif
7965edec
JH
2812 break;
2813 case 8:
5716d070 2814#ifdef c99_isless
7965edec 2815 RETVAL = c99_isless(x, y);
5716d070
JH
2816#else
2817 not_here("isless");
2818#endif
7965edec
JH
2819 break;
2820 case 9:
5716d070 2821#ifdef c99_islessequal
7965edec 2822 RETVAL = c99_islessequal(x, y);
5716d070
JH
2823#else
2824 not_here("islessequal");
2825#endif
7965edec
JH
2826 break;
2827 case 10:
5716d070 2828#ifdef c99_islessgreater
7965edec 2829 RETVAL = c99_islessgreater(x, y);
5716d070
JH
2830#else
2831 not_here("islessgreater");
2832#endif
7965edec
JH
2833 break;
2834 case 11:
5716d070 2835#ifdef c99_isunordered
7965edec 2836 RETVAL = c99_isunordered(x, y);
5716d070
JH
2837#else
2838 not_here("isunordered");
2839#endif
7965edec
JH
2840 break;
2841 case 12:
5716d070 2842#ifdef c99_nextafter
7965edec 2843 RETVAL = c99_nextafter(x, y);
5716d070
JH
2844#else
2845 not_here("nextafter");
2846#endif
7965edec
JH
2847 break;
2848 case 13:
5716d070 2849#ifdef c99_nexttoward
7965edec 2850 RETVAL = c99_nexttoward(x, y);
5716d070
JH
2851#else
2852 not_here("nexttoward");
2853#endif
7965edec
JH
2854 break;
2855 case 14:
2856 default:
5716d070 2857#ifdef c99_remainder
7f4bfd0b 2858 RETVAL = c99_remainder(x, y);
5716d070 2859#else
7f4bfd0b 2860 not_here("remainder");
5716d070 2861#endif
7965edec
JH
2862 break;
2863 }
2864 OUTPUT:
2865 RETVAL
2304df62
AD
2866
2867void
2868frexp(x)
e1ca407b 2869 NV x
2304df62
AD
2870 PPCODE:
2871 int expvar;
2304df62 2872 /* (We already know stack is long enough.) */
5716d070 2873 PUSHs(sv_2mortal(newSVnv(Perl_frexp(x,&expvar)))); /* C89 math */
2304df62
AD
2874 PUSHs(sv_2mortal(newSViv(expvar)));
2875
e1ca407b 2876NV
2304df62 2877ldexp(x,exp)
e1ca407b 2878 NV x
2304df62
AD
2879 int exp
2880
2304df62
AD
2881void
2882modf(x)
e1ca407b 2883 NV x
2304df62 2884 PPCODE:
e1ca407b 2885 NV intvar;
2304df62 2886 /* (We already know stack is long enough.) */
5716d070 2887 PUSHs(sv_2mortal(newSVnv(Perl_modf(x,&intvar)))); /* C89 math */
2304df62
AD
2888 PUSHs(sv_2mortal(newSVnv(intvar)));
2889
7965edec
JH
2890void
2891remquo(x,y)
2892 NV x
2893 NV y
2894 PPCODE:
5716d070 2895#ifdef c99_remquo
7965edec
JH
2896 int intvar;
2897 PUSHs(sv_2mortal(newSVnv(c99_remquo(x,y,&intvar))));
2898 PUSHs(sv_2mortal(newSVnv(intvar)));
5716d070 2899#else
7f4bfd0b
JH
2900 PERL_UNUSED_VAR(x);
2901 PERL_UNUSED_VAR(y);
5716d070
JH
2902 not_here("remquo");
2903#endif
7965edec
JH
2904
2905NV
2906scalbn(x,y)
2907 NV x
2908 IV y
2909 CODE:
5716d070 2910#ifdef c99_scalbn
7965edec 2911 RETVAL = c99_scalbn(x, y);
5716d070 2912#else
7f4bfd0b
JH
2913 PERL_UNUSED_VAR(x);
2914 PERL_UNUSED_VAR(y);
78a0541a 2915 RETVAL = NV_NAN;
5716d070
JH
2916 not_here("scalbn");
2917#endif
7965edec
JH
2918 OUTPUT:
2919 RETVAL
2920
2921NV
2922fma(x,y,z)
2923 NV x
2924 NV y
2925 NV z
2926 CODE:
5716d070 2927#ifdef c99_fma
6b13befe
JH
2928 RETVAL = c99_fma(x, y, z);
2929#else
7f4bfd0b
JH
2930 PERL_UNUSED_VAR(x);
2931 PERL_UNUSED_VAR(y);
2932 PERL_UNUSED_VAR(z);
6b13befe 2933 not_here("fma");
5716d070 2934#endif
7965edec
JH
2935 OUTPUT:
2936 RETVAL
2937
2938NV
07bb61ac
JH
2939nan(payload = 0)
2940 NV payload
7965edec 2941 CODE:
07bb61ac
JH
2942#ifdef NV_NAN
2943 /* If no payload given, just return the default NaN.
2944 * This makes a difference in platforms where the default
2945 * NaN is not all zeros. */
2946 if (items == 0) {
2947 RETVAL = NV_NAN;
2948 } else {
2949 S_setpayload(&RETVAL, payload, FALSE);
2950 }
2951#elif defined(c99_nan)
2952 {
2953 STRLEN elen = my_snprintf(PL_efloatbuf, PL_efloatsize, "%g", nv);
2954 if ((IV)elen == -1) {
2955 RETVAL = NV_NAN;
2956 } else {
2957 RETVAL = c99_nan(PL_efloatbuf);
2958 }
2959 }
7c7d45f1 2960#else
5716d070
JH
2961 not_here("nan");
2962#endif
7965edec
JH
2963 OUTPUT:
2964 RETVAL
2965
2966NV
2967jn(x,y)
2968 IV x
2969 NV y
2970 ALIAS:
2971 yn = 1
2972 CODE:
78a0541a 2973 RETVAL = NV_NAN;
7965edec
JH
2974 switch (ix) {
2975 case 0:
5716d070 2976#ifdef bessel_jn
7f4bfd0b 2977 RETVAL = bessel_jn(x, y);
5716d070 2978#else
6b13befe
JH
2979 PERL_UNUSED_VAR(x);
2980 PERL_UNUSED_VAR(y);
7f4bfd0b 2981 not_here("jn");
5716d070 2982#endif
7965edec
JH
2983 break;
2984 case 1:
2985 default:
5716d070 2986#ifdef bessel_yn
7f4bfd0b 2987 RETVAL = bessel_yn(x, y);
5716d070 2988#else
6b13befe
JH
2989 PERL_UNUSED_VAR(x);
2990 PERL_UNUSED_VAR(y);
7f4bfd0b 2991 not_here("yn");
5716d070 2992#endif
7965edec
JH
2993 break;
2994 }
2995 OUTPUT:
2996 RETVAL
2997
2304df62 2998SysRet
1dfe7606 2999sigaction(sig, optaction, oldaction = 0)
2304df62 3000 int sig
1dfe7606 3001 SV * optaction
2304df62
AD
3002 POSIX::SigAction oldaction
3003 CODE:
30b42e09 3004#if defined(WIN32) || defined(NETWARE) || (defined(__amigaos4__) && defined(__NEWLIB__))
6dead956
GS
3005 RETVAL = not_here("sigaction");
3006#else
2304df62
AD
3007# This code is really grody because we're trying to make the signal
3008# interface look beautiful, which is hard.
3009
2304df62 3010 {
27da23d5 3011 dVAR;
1dfe7606 3012 POSIX__SigAction action;
f584eb2d 3013 GV *siggv = gv_fetchpvs("SIG", GV_ADD, SVt_PVHV);
2304df62
AD
3014 struct sigaction act;
3015 struct sigaction oact;
1dfe7606 3016 sigset_t sset;
183bde56 3017 SV *osset_sv;
27c1a449 3018 sigset_t osset;
2304df62
AD
3019 POSIX__SigSet sigset;
3020 SV** svp;
1d81eac9 3021 SV** sigsvp;
3609ea0d 3022
516d25e8
SP
3023 if (sig < 0) {
3024 croak("Negative signals are not allowed");
3025 }
3026
1d81eac9 3027 if (sig == 0 && SvPOK(ST(0))) {
aa07b2f6 3028 const char *s = SvPVX_const(ST(0));
1d81eac9
JH
3029 int i = whichsig(s);
3030
3031 if (i < 0 && memEQ(s, "SIG", 3))
3032 i = whichsig(s + 3);
3033 if (i < 0) {
3034 if (ckWARN(WARN_SIGNAL))
3035 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
3036 "No such signal: SIG%s", s);
3037 XSRETURN_UNDEF;
3038 }
3039 else
3040 sig = i;
3041 }
3609ea0d
JH
3042#ifdef NSIG
3043 if (sig > NSIG) { /* NSIG - 1 is still okay. */
3044 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
3045 "No such signal: %d", sig);
3046 XSRETURN_UNDEF;
3047 }
3048#endif
1d81eac9
JH
3049 sigsvp = hv_fetch(GvHVn(siggv),
3050 PL_sig_name[sig],
3051 strlen(PL_sig_name[sig]),
3052 TRUE);
2304df62 3053
1dfe7606 3054 /* Check optaction and set action */
3055 if(SvTRUE(optaction)) {
3056 if(sv_isa(optaction, "POSIX::SigAction"))
3057 action = (HV*)SvRV(optaction);
3058 else
3059 croak("action is not of type POSIX::SigAction");
3060 }
3061 else {
3062 action=0;
3063 }
3064
3065 /* sigaction() is supposed to look atomic. In particular, any
3066 * signal handler invoked during a sigaction() call should
3067 * see either the old or the new disposition, and not something
3068 * in between. We use sigprocmask() to make it so.
3069 */
3070 sigfillset(&sset);
3071 RETVAL=sigprocmask(SIG_BLOCK, &sset, &osset);
3072 if(RETVAL == -1)
15c0d34a 3073 XSRETURN_UNDEF;
1dfe7606 3074 ENTER;
3075 /* Restore signal mask no matter how we exit this block. */
f584eb2d 3076 osset_sv = newSVpvn((char *)(&osset), sizeof(sigset_t));
183bde56 3077 SAVEFREESV( osset_sv );
40b7a5f5 3078 SAVEDESTRUCTOR_X(restore_sigmask, osset_sv);
1dfe7606 3079
3080 RETVAL=-1; /* In case both oldaction and action are 0. */
3081
3082 /* Remember old disposition if desired. */
2304df62 3083 if (oldaction) {
017a3ce5 3084 svp = hv_fetchs(oldaction, "HANDLER", TRUE);
1dfe7606 3085 if(!svp)
3086 croak("Can't supply an oldaction without a HANDLER");
3087 if(SvTRUE(*sigsvp)) { /* TBD: what if "0"? */
3088 sv_setsv(*svp, *sigsvp);
3089 }
3090 else {
f584eb2d 3091 sv_setpvs(*svp, "DEFAULT");
1dfe7606 3092 }
3093 RETVAL = sigaction(sig, (struct sigaction *)0, & oact);
6ca4bbc9
GG
3094 if(RETVAL == -1) {
3095 LEAVE;
15c0d34a 3096 XSRETURN_UNDEF;
6ca4bbc9 3097 }
1dfe7606 3098 /* Get back the mask. */
017a3ce5 3099 svp = hv_fetchs(oldaction, "MASK", TRUE);
1dfe7606 3100 if (sv_isa(*svp, "POSIX::SigSet")) {
92b39396 3101 sigset = (sigset_t *) SvPV_nolen(SvRV(*svp));
1dfe7606 3102 }
3103 else {
92b39396
NC
3104 sigset = (sigset_t *) allocate_struct(aTHX_ *svp,
3105 sizeof(sigset_t),
3106 "POSIX::SigSet");
1dfe7606 3107 }
3108 *sigset = oact.sa_mask;
3109
3110 /* Get back the flags. */
017a3ce5 3111 svp = hv_fetchs(oldaction, "FLAGS", TRUE);
1dfe7606 3112 sv_setiv(*svp, oact.sa_flags);
d36b6582
CS
3113
3114 /* Get back whether the old handler used safe signals. */
017a3ce5 3115 svp = hv_fetchs(oldaction, "SAFE", TRUE);
e91e3b10
RB
3116 sv_setiv(*svp,
3117 /* compare incompatible pointers by casting to integer */
3118 PTR2nat(oact.sa_handler) == PTR2nat(PL_csighandlerp));
2304df62
AD
3119 }
3120
3121 if (action) {
d36b6582
CS
3122 /* Safe signals use "csighandler", which vectors through the
3123 PL_sighandlerp pointer when it's safe to do so.
3124 (BTW, "csighandler" is very different from "sighandler".) */
017a3ce5 3125 svp = hv_fetchs(action, "SAFE", FALSE);
e91e3b10
RB
3126 act.sa_handler =
3127 DPTR2FPTR(
87d46f97 3128 void (*)(int),
e91e3b10
RB
3129 (*svp && SvTRUE(*svp))
3130 ? PL_csighandlerp : PL_sighandlerp
3131 );
d36b6582
CS
3132
3133 /* Vector new Perl handler through %SIG.
3134 (The core signal handlers read %SIG to dispatch.) */
017a3ce5 3135 svp = hv_fetchs(action, "HANDLER", FALSE);
2304df62
AD
3136 if (!svp)
3137 croak("Can't supply an action without a HANDLER");
1dfe7606 3138 sv_setsv(*sigsvp, *svp);
d36b6582
CS
3139
3140 /* This call actually calls sigaction() with almost the
3141 right settings, including appropriate interpretation
3142 of DEFAULT and IGNORE. However, why are we doing
3143 this when we're about to do it again just below? XXX */
17cffb37 3144 SvSETMAGIC(*sigsvp);
d36b6582
CS
3145
3146 /* And here again we duplicate -- DEFAULT/IGNORE checking. */
1dfe7606 3147 if(SvPOK(*svp)) {
aa07b2f6 3148 const char *s=SvPVX_const(*svp);
1dfe7606 3149 if(strEQ(s,"IGNORE")) {
3150 act.sa_handler = SIG_IGN;
3151 }
3152 else if(strEQ(s,"DEFAULT")) {
3153 act.sa_handler = SIG_DFL;
3154 }
1dfe7606 3155 }
2304df62
AD
3156
3157 /* Set up any desired mask. */
017a3ce5 3158 svp = hv_fetchs(action, "MASK", FALSE);
2304df62 3159 if (svp && sv_isa(*svp, "POSIX::SigSet")) {
92b39396 3160 sigset = (sigset_t *) SvPV_nolen(SvRV(*svp));
2304df62
AD
3161 act.sa_mask = *sigset;
3162 }
3163 else
85e6fe83 3164 sigemptyset(& act.sa_mask);
2304df62
AD
3165
3166 /* Set up any desired flags. */
017a3ce5 3167 svp = hv_fetchs(action, "FLAGS", FALSE);
2304df62 3168 act.sa_flags = svp ? SvIV(*svp) : 0;
2304df62 3169
1dfe7606 3170 /* Don't worry about cleaning up *sigsvp if this fails,
3171 * because that means we tried to disposition a
3172 * nonblockable signal, in which case *sigsvp is
3173 * essentially meaningless anyway.
3174 */
6c418a22 3175 RETVAL = sigaction(sig, & act, (struct sigaction *)0);
6ca4bbc9
GG
3176 if(RETVAL == -1) {
3177 LEAVE;
a7aad5de 3178 XSRETURN_UNDEF;
6ca4bbc9 3179 }
2304df62 3180 }
1dfe7606 3181
3182 LEAVE;
2304df62 3183 }
6dead956 3184#endif
2304df62
AD
3185 OUTPUT:
3186 RETVAL
3187
3188SysRet
3189sigpending(sigset)
3190 POSIX::SigSet sigset
7a004119
NC
3191 ALIAS:
3192 sigsuspend = 1
3193 CODE:
ea34f6bd 3194#ifdef __amigaos4__
30b42e09
AB
3195 RETVAL = not_here("sigpending");
3196#else
7a004119 3197 RETVAL = ix ? sigsuspend(sigset) : sigpending(sigset);
32a14dd4 3198#endif
7a004119
NC
3199 OUTPUT:
3200 RETVAL
20120e59
LT
3201 CLEANUP:
3202 PERL_ASYNC_CHECK();
2304df62
AD
3203
3204SysRet
3205sigprocmask(how, sigset, oldsigset = 0)
3206 int how
b13bbac7 3207 POSIX::SigSet sigset = NO_INIT
33c27489
GS
3208 POSIX::SigSet oldsigset = NO_INIT
3209INIT:
a3b811a7 3210 if (! SvOK(ST(1))) {
b13bbac7 3211 sigset = NULL;
a3b811a7 3212 } else if (sv_isa(ST(1), "POSIX::SigSet")) {
92b39396 3213 sigset = (sigset_t *) SvPV_nolen(SvRV(ST(1)));
b13bbac7
AB
3214 } else {
3215 croak("sigset is not of type POSIX::SigSet");
33c27489 3216 }
b13bbac7 3217
194cfca0 3218 if (items < 3 || ! SvOK(ST(2))) {
b13bbac7 3219 oldsigset = NULL;
a3b811a7 3220 } else if (sv_isa(ST(2), "POSIX::SigSet")) {
92b39396 3221 oldsigset = (sigset_t *) SvPV_nolen(SvRV(ST(2)));
b13bbac7
AB
3222 } else {
3223 croak("oldsigset is not of type POSIX::SigSet");
33c27489 3224 }
2304df62 3225
2304df62
AD
3226void
3227_exit(status)
3228 int status
8990e307 3229
85e6fe83 3230SysRet
8990e307
LW
3231dup2(fd1, fd2)
3232 int fd1
3233 int fd2
ad413e46 3234 CODE:
6e7b1a26 3235 if (fd1 >= 0 && fd2 >= 0) {
ad413e46 3236#ifdef WIN32
6e7b1a26
JH
3237 /* RT #98912 - More Microsoft muppetry - failing to
3238 actually implemented the well known documented POSIX
3239 behaviour for a POSIX API.
3240 http://msdn.microsoft.com/en-us/library/8syseb29.aspx */
3241 RETVAL = dup2(fd1, fd2) == -1 ? -1 : fd2;
ad413e46 3242#else
6e7b1a26 3243 RETVAL = dup2(fd1, fd2);
ad413e46 3244#endif
6e7b1a26
JH
3245 } else {
3246 SETERRNO(EBADF,RMS_IFI);
3247 RETVAL = -1;
3248 }
ad413e46
NC
3249 OUTPUT:
3250 RETVAL
8990e307 3251
4a9d6100 3252SV *
a0d0e21e 3253lseek(fd, offset, whence)
85e6fe83
LW
3254 int fd
3255 Off_t offset
3256 int whence
4a9d6100 3257 CODE:
511343a2
JH
3258 if (fd >= 0) {
3259 Off_t pos = PerlLIO_lseek(fd, offset, whence);
3260 RETVAL = sizeof(Off_t) > sizeof(IV)
3261 ? newSVnv((NV)pos) : newSViv((IV)pos);
3262 } else {
3263 SETERRNO(EBADF,RMS_IFI);
3264 RETVAL = newSViv(-1);
3265 }
4a9d6100
GS
3266 OUTPUT:
3267 RETVAL
8990e307 3268
c5661c80 3269void
8990e307
LW
3270nice(incr)
3271 int incr
15f0f28a
AE
3272 PPCODE:
3273 errno = 0;
3274 if ((incr = nice(incr)) != -1 || errno == 0) {
3275 if (incr == 0)
d3d34884 3276 XPUSHs(newSVpvs_flags("0 but true", SVs_TEMP));
15f0f28a
AE
3277 else
3278 XPUSHs(sv_2mortal(newSViv(incr)));
3279 }
8990e307 3280
8063af02 3281void
8990e307 3282pipe()
85e6fe83
LW
3283 PPCODE:
3284 int fds[2];
85e6fe83 3285 if (pipe(fds) != -1) {
924508f0 3286 EXTEND(SP,2);
85e6fe83
LW
3287 PUSHs(sv_2mortal(newSViv(fds[0])));
3288 PUSHs(sv_2mortal(newSViv(fds[1])));
3289 }
8990e307 3290
85e6fe83 3291SysRet
a0d0e21e 3292read(fd, buffer, nbytes)
7747499c
TB
3293 PREINIT:
3294 SV *sv_buffer = SvROK(ST(1)) ? SvRV(ST(1)) : ST(1);
3295 INPUT:
3296 int fd
3297 size_t nbytes
3298 char * buffer = sv_grow( sv_buffer, nbytes+1 );
a0d0e21e 3299 CLEANUP:
7747499c 3300 if (RETVAL >= 0) {
b162af07 3301 SvCUR_set(sv_buffer, RETVAL);
7747499c
TB
3302 SvPOK_only(sv_buffer);
3303 *SvEND(sv_buffer) = '\0';
bbce6d69 3304 SvTAINTED_on(sv_buffer);
7747499c 3305 }
8990e307 3306
85e6fe83 3307SysRet
8990e307 3308setpgid(pid, pgid)
86200d5c
JH
3309 pid_t pid
3310 pid_t pgid
8990e307 3311
86200d5c 3312pid_t
8990e307
LW
3313setsid()
3314
86200d5c 3315pid_t
8990e307
LW
3316tcgetpgrp(fd)
3317 int fd
3318
85e6fe83 3319SysRet
8990e307
LW
3320tcsetpgrp(fd, pgrp_id)
3321 int fd
86200d5c 3322 pid_t pgrp_id
8990e307 3323
8063af02 3324void
8990e307 3325uname()
2304df62 3326 PPCODE:
a0d0e21e 3327#ifdef HAS_UNAME
85e6fe83 3328 struct utsname buf;
85e6fe83 3329 if (uname(&buf) >= 0) {
924508f0 3330 EXTEND(SP, 5);
d3d34884
NC
3331 PUSHs(newSVpvn_flags(buf.sysname, strlen(buf.sysname), SVs_TEMP));
3332 PUSHs(newSVpvn_flags(buf.nodename, strlen(buf.nodename), SVs_TEMP));
3333 PUSHs(newSVpvn_flags(buf.release, strlen(buf.release), SVs_TEMP));
3334 PUSHs(newSVpvn_flags(buf.version, strlen(buf.version), SVs_TEMP));
3335 PUSHs(newSVpvn_flags(buf.machine, strlen(buf.machine), SVs_TEMP));
8990e307 3336 }
a0d0e21e
LW
3337#else
3338 uname((char *) 0); /* A stub to call not_here(). */
3339#endif
8990e307 3340
85e6fe83 3341SysRet
a0d0e21e
LW
3342write(fd, buffer, nbytes)
3343 int fd
3344 char * buffer
3345 size_t nbytes
3346
33f01dd1
SH
3347SV *
3348tmpnam()
3349 PREINIT:
3350 STRLEN i;
3351 int len;
3352 CODE:
c2b90b61 3353 RETVAL = newSVpvs("");
33f01dd1 3354 SvGROW(RETVAL, L_tmpnam);
0fadf2db
JH
3355 /* Yes, we know tmpnam() is bad. So bad that some compilers
3356 * and linkers warn against using it. But it is here for
3357 * completeness. POSIX.pod warns against using it.
3358 *
3359 * Then again, maybe this should be removed at some point.
3360 * No point in enabling dangerous interfaces. */
cae71c5d
TC
3361 if (ckWARN_d(WARN_DEPRECATED)) {
3362 HV *warned = get_hv("POSIX::_warned", GV_ADD | GV_ADDMULTI);
3363 if (! hv_exists(warned, (const char *)&PL_op, sizeof(PL_op))) {
3364 Perl_warner(aTHX_ packWARN(WARN_DEPRECATED), "Calling POSIX::tmpnam() is deprecated");
f0c80be3 3365 (void)hv_store(warned, (const char *)&PL_op, sizeof(PL_op), &PL_sv_yes, 0);
cae71c5d
TC
3366 }
3367 }
33f01dd1
SH
3368 len = strlen(tmpnam(SvPV(RETVAL, i)));
3369 SvCUR_set(RETVAL, len);
3370 OUTPUT:
3371 RETVAL
a0d0e21e
LW
3372
3373void
3374abort()
3375
3376int
3377mblen(s, n)
3378 char * s
3379 size_t n
3380
3381size_t
3382mbstowcs(s, pwcs, n)
3383 wchar_t * s
3384 char * pwcs
3385 size_t n
3386
3387int
3388mbtowc(pwc, s, n)
3389 wchar_t * pwc
3390 char * s
3391 size_t n
3392
3393int
3394wcstombs(s, pwcs, n)
3395 char * s
3396 wchar_t * pwcs
3397 size_t n
3398
3399int
3400wctomb(s, wchar)
3401 char * s
3402 wchar_t wchar
3403
3404int
3405strcoll(s1, s2)
3406 char * s1
3407 char * s2
3408
a89d8a78
DH
3409void
3410strtod(str)
3411 char * str
3412 PREINIT:
3413 double num;
3414 char *unparsed;
3415 PPCODE:
67d796ae
KW
3416 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
3417 STORE_LC_NUMERIC_FORCE_TO_UNDERLYING();
a89d8a78
DH
3418 num = strtod(str, &unparsed);
3419 PUSHs(sv_2mortal(newSVnv(num)));
de915ff5 3420 if (GIMME_V == G_ARRAY) {
924508f0 3421 EXTEND(SP, 1);
a89d8a78
DH
3422 if (unparsed)
3423 PUSHs(sv_2mortal(newSViv(strlen(unparsed))));
3424 else
6b88bc9c 3425 PUSHs(&PL_sv_undef);
a89d8a78 3426 }
67d796ae 3427 RESTORE_LC_NUMERIC_STANDARD();
a89d8a78 3428
0ff7b9da
JH
3429#ifdef HAS_STRTOLD
3430
3431void
3432strtold(str)
3433 char * str
3434 PREINIT:
3435 long double num;
3436 char *unparsed;
3437 PPCODE:
67d796ae
KW
3438 DECLARATION_FOR_LC_NUMERIC_MANIPULATION;
3439 STORE_LC_NUMERIC_FORCE_TO_UNDERLYING();
0ff7b9da
JH
3440 num = strtold(str, &unparsed);
3441 PUSHs(sv_2mortal(newSVnv(num)));
de915ff5 3442 if (GIMME_V == G_ARRAY) {
0ff7b9da
JH
3443 EXTEND(SP, 1);
3444 if (unparsed)
3445 PUSHs(sv_2mortal(newSViv(strlen(unparsed))));
3446 else
3447 PUSHs(&PL_sv_undef);
3448 }
67d796ae 3449 RESTORE_LC_NUMERIC_STANDARD();
0ff7b9da
JH
3450
3451#endif
3452
a89d8a78
DH
3453void
3454strtol(str, base = 0)
3455 char * str
3456 int base
3457 PREINIT:
3458 long num;
3459 char *unparsed;
3460 PPCODE:
e80fee22
JH
3461 if (base == 0 || (base >= 2 && base <= 36)) {
3462 num = strtol(str, &unparsed, base);
188f97e0 3463#if IVSIZE < LONGSIZE
e80fee22
JH
3464 if (num < IV_MIN || num > IV_MAX)
3465 PUSHs(sv_2mortal(newSVnv((double)num)));
3466 else
3467#endif
3468 PUSHs(sv_2mortal(newSViv((IV)num)));
3469 if (GIMME_V == G_ARRAY) {
3470 EXTEND(SP, 1);
3471 if (unparsed)
3472 PUSHs(sv_2mortal(newSViv(strlen(unparsed))));
3473 else
3474 PUSHs(&PL_sv_undef);
3475 }
3476 } else {
3477 SETERRNO(EINVAL, LIB_INVARG);
3478 PUSHs(&PL_sv_undef);
3479 if (GIMME_V == G_ARRAY) {
3480 EXTEND(SP, 1);
3481 PUSHs(&PL_sv_undef);
3482 }
3483 }
a89d8a78
DH
3484
3485void
3486strtoul(str, base = 0)
4b48cf39 3487 const char * str
a89d8a78
DH
3488 int base
3489 PREINIT:
3490 unsigned long num;
3491 char *unparsed;
3492 PPCODE:
0f17be83
JH
3493 PERL_UNUSED_VAR(str);
3494 PERL_UNUSED_VAR(base);
e80fee22
JH
3495 if (base == 0 || (base >= 2 && base <= 36)) {
3496 num = strtoul(str, &unparsed, base);
84c133a0 3497#if IVSIZE <= LONGSIZE
e80fee22
JH
3498 if (num > IV_MAX)
3499 PUSHs(sv_2mortal(newSVnv((double)num)));
3500 else
3501#endif
3502 PUSHs(sv_2mortal(newSViv((IV)num)));
3503 if (GIMME_V == G_ARRAY) {
3504 EXTEND(SP, 1);
3505 if (unparsed)
3506 PUSHs(sv_2mortal(newSViv(strlen(unparsed))));
3507 else
3508 PUSHs(&PL_sv_undef);
3509 }
3510 } else {
3511 SETERRNO(EINVAL, LIB_INVARG);
3512 PUSHs(&PL_sv_undef);
3513 if (GIMME_V == G_ARRAY) {
3514 EXTEND(SP, 1);
3515 PUSHs(&PL_sv_undef);
3516 }
3517 }
a89d8a78 3518
8063af02 3519void
a0d0e21e
LW
3520strxfrm(src)
3521 SV * src
85e6fe83 3522 CODE:
a0d0e21e
LW
3523 {
3524 STRLEN srclen;
3525 STRLEN dstlen;
6ec5f825 3526 STRLEN buflen;
a0d0e21e
LW
3527 char *p = SvPV(src,srclen);
3528 srclen++;
6ec5f825
TC
3529 buflen = srclen * 4 + 1;
3530 ST(0) = sv_2mortal(newSV(buflen));
3531 dstlen = strxfrm(SvPVX(ST(0)), p, (size_t)buflen);
3532 if (dstlen >= buflen) {
a0d0e21e
LW
3533 dstlen++;
3534 SvGROW(ST(0), dstlen);
3535 strxfrm(SvPVX(ST(0)), p, (size_t)dstlen);
3536 dstlen--;
3537 }
b162af07 3538 SvCUR_set(ST(0), dstlen);
a0d0e21e
LW
3539 SvPOK_only(ST(0));
3540 }
3541
3542SysRet
3543mkfifo(filename, mode)
3544 char * filename
3545 Mode_t mode
b5890904
NC
3546 ALIAS:
3547 access = 1
748a9306 3548 CODE:
b5890904
NC
3549 if(ix) {
3550 RETVAL = access(filename, mode);
3551 } else {
3552 TAINT_PROPER("mkfifo");
3553 RETVAL = mkfifo(filename, mode);
3554 }
748a9306
LW
3555 OUTPUT:
3556 RETVAL
a0d0e21e
LW
3557
3558SysRet
3559tcdrain(fd)
3560 int fd
9163475a
NC
3561 ALIAS:
3562 close = 1
3563 dup = 2
3564 CODE:
05732f97
JH
3565 if (fd >= 0) {
3566 RETVAL = ix == 1 ? close(fd)
3567 : (ix < 1 ? tcdrain(fd) : dup(fd));
3568 } else {
3569 SETERRNO(EBADF,RMS_IFI);
3570 RETVAL = -1;
3571 }
9163475a
NC
3572 OUTPUT:
3573 RETVAL
a0d0e21e
LW
3574
3575
3576SysRet
3577tcflow(fd, action)
3578 int fd
3579 int action
7a004119
NC
3580 ALIAS:
3581 tcflush = 1
3582 tcsendbreak = 2
3583 CODE:
af823f60
JH
3584 if (fd >= 0 && action >= 0) {
3585 RETVAL = ix == 1 ? tcflush(fd, action)
3586 : (ix < 1 ? tcflow(fd, action) : tcsendbreak(fd, action));
3587 } else {
3588 SETERRNO(EBADF,RMS_IFI);
3589 RETVAL = -1;
3590 }
7a004119
NC
3591 OUTPUT:
3592 RETVAL
a0d0e21e 3593
250d97fd 3594void
c1646883 3595asctime(sec, min, hour, mday, mon, year, wday = 0, yday = 0, isdst = -1)
a0d0e21e
LW
3596 int sec
3597 int min
3598 int hour
3599 int mday
3600 int mon
3601 int year
3602 int wday
3603 int yday
3604 int isdst
250d97fd
NC
3605 ALIAS:
3606 mktime = 1
3607 PPCODE:
a0d0e21e 3608 {
250d97fd 3609 dXSTARG;
a0d0e21e 3610 struct tm mytm;
a748fe11 3611 init_tm(&mytm); /* XXX workaround - see init_tm() in core util.c */
a0d0e21e
LW
3612 mytm.tm_sec = sec;
3613 mytm.tm_min = min;
3614 mytm.tm_hour = hour;
3615 mytm.tm_mday = mday;
3616 mytm.tm_mon = mon;
3617 mytm.tm_year = year;
3618 mytm.tm_wday = wday;
3619 mytm.tm_yday = yday;
3620 mytm.tm_isdst = isdst;
250d97fd 3621 if (ix) {
e2054bce
TC
3622 const time_t result = mktime(&mytm);
3623 if (result == (time_t)-1)
250d97fd
NC
3624 SvOK_off(TARG);
3625 else if (result == 0)
3626 sv_setpvn(TARG, "0 but true", 10);
3627 else
3628 sv_setiv(TARG, (IV)result);
3629 } else {
3630 sv_setpv(TARG, asctime(&mytm));
3631 }
3632 ST(0) = TARG;
3633 XSRETURN(1);
a0d0e21e 3634 }
a0d0e21e
LW
3635
3636long
3637clock()
3638
3639char *
3640ctime(time)
748a9306 3641 Time_t &time
8990e307 3642
37120919
AD
3643void
3644times()
3645 PPCODE:
3646 struct tms tms;
3647 clock_t realtime;
3648 realtime = times( &tms );
924508f0 3649 EXTEND(SP,5);
9607fc9c
PP
3650 PUSHs( sv_2mortal( newSViv( (IV) realtime ) ) );
3651 PUSHs( sv_2mortal( newSViv( (IV) tms.tms_utime ) ) );
3652 PUSHs( sv_2mortal( newSViv( (IV) tms.tms_stime ) ) );
3653 PUSHs( sv_2mortal( newSViv( (IV) tms.tms_cutime ) ) );
3654 PUSHs( sv_2mortal( newSViv( (IV) tms.tms_cstime ) ) );
37120919 3655
a0d0e21e
LW
3656double
3657difftime(time1, time2)
3658 Time_t time1
3659 Time_t time2
3660
8063af02
DM
3661#XXX: if $xsubpp::WantOptimize is always the default
3662# sv_setpv(TARG, ...) could be used rather than
3663# ST(0) = sv_2mortal(newSVpv(...))
3664void
e44f695e 3665strftime(fmt, sec, min, hour, mday, mon, year, wday = -1, yday = -1, isdst = -1)
dc57de01 3666 SV * fmt
a0d0e21e
LW
3667 int sec
3668 int min
3669 int hour
3670 int mday
3671 int mon
3672 int year
3673 int wday
3674 int yday
3675 int isdst
3676 CODE:
3677 {
5d37acd6 3678 char *buf;
f406a445 3679 SV *sv;
5d37acd6
DM
3680