# include "config.h"
#endif
+/* this is used for functions which take a depth trailing
+ * argument under debugging */
+#ifdef DEBUGGING
+#define _pDEPTH ,U32 depth
+#define _aDEPTH ,depth
+#else
+#define _pDEPTH
+#define _aDEPTH
+#endif
+
/* NOTE 1: that with gcc -std=c89 the __STDC_VERSION__ is *not* defined
* because the __STDC_VERSION__ became a thing only with C90. Therefore,
* with gcc, HAS_C99 will never become true as long as we use -std=c89.
* or variables/arguments that are used only in certain configurations.
*/
#ifndef PERL_UNUSED_ARG
-# if defined(lint) && defined(S_SPLINT_S) /* www.splint.org */
-# include <note.h>
-# define PERL_UNUSED_ARG(x) NOTE(ARGUNUSED(x))
-# else
-# define PERL_UNUSED_ARG(x) ((void)sizeof(x))
-# endif
+# define PERL_UNUSED_ARG(x) ((void)sizeof(x))
#endif
#ifndef PERL_UNUSED_VAR
# define PERL_UNUSED_VAR(x) ((void)sizeof(x))
# include <locale.h>
#endif
+#ifdef I_XLOCALE
+# include <xlocale.h>
+#endif
+
#if !defined(NO_LOCALE) && defined(HAS_SETLOCALE)
# define USE_LOCALE
# define HAS_SKIP_LOCALE_INIT /* Solely for XS code to test for this
# endif
# endif
#else
-# ifndef memcmp
-# define memcmp my_memcmp
-# endif
+# undef memcmp
+# define memcmp my_memcmp
#endif /* HAS_MEMCMP && HAS_SANE_MEMCMP */
#ifndef memzero
#define CLEAR_ERRSV() STMT_START { \
SV ** const svp = &GvSV(PL_errgv); \
if (!*svp) { \
- goto clresv_newemptypv; \
+ *svp = newSVpvs(""); \
} else if (SvREADONLY(*svp)) { \
SvREFCNT_dec_NN(*svp); \
- clresv_newemptypv: \
*svp = newSVpvs(""); \
} else { \
SV *const errsv = *svp; \
- sv_setpvs(errsv, ""); \
+ SvPVCLEAR(errsv); \
SvPOK_only(errsv); \
if (SvMAGICAL(errsv)) { \
mg_free(errsv); \
# define Perl_isinf(x) isinfq(x)
# define Perl_isnan(x) isnanq(x)
# define Perl_isfinite(x) !(isnanq(x) || isinfq(x))
+# define Perl_fp_class(x) ((x) == 0.0Q ? 0 : isinfq(x) ? 3 : isnanq(x) ? 4 : PERL_ABS(x) < FLT128_MIN ? 2 : 1)
+# define Perl_fp_class_inf(x) (Perl_fp_class(x) == 3)
+# define Perl_fp_class_nan(x) (Perl_fp_class(x) == 4)
+# define Perl_fp_class_norm(x) (Perl_fp_class(x) == 1)
+# define Perl_fp_class_denorm(x) (Perl_fp_class(x) == 2)
+# define Perl_fp_class_zero(x) (Perl_fp_class(x) == 0)
#else
# define NV_DIG DBL_DIG
# ifdef DBL_MANT_DIG
*/
#if defined(USE_ITHREADS) && defined(I_PTHREAD) && \
defined(__clang__) && \
+ !defined(PERL_GLOBAL_STRUCT) && \
+ !defined(PERL_GLOBAL_STRUCT_PRIVATE) && \
!defined(SWIG) && \
((!defined(__apple_build_version__) && \
((__clang_major__ == 3 && __clang_minor__ >= 6) || \
# define USEMYBINMODE /**/
# include <io.h> /* for setmode() prototype */
# define my_binmode(fp, iotype, mode) \
- (PerlLIO_setmode(fileno(fp), mode) != -1 ? TRUE : FALSE)
+ cBOOL(PerlLIO_setmode(fileno(fp), mode) != -1)
#endif
#ifdef __CYGWIN__
#else
union any {
void* any_ptr;
+ SV* any_sv;
+ SV** any_svp;
+ GV* any_gv;
+ AV* any_av;
+ HV* any_hv;
+ OP* any_op;
+ char* any_pv;
+ char** any_pvp;
I32 any_i32;
U32 any_u32;
IV any_iv;
# define USE_HASH_SEED
#endif
-/* Win32 defines a type 'WORD' in windef.h, and AmigaOS in exec/types.h.
- * This conflicts with the enumerator 'WORD' defined in perly.h.
- * The yytokentype enum is only a debugging aid, so it's not really needed. */
-#if defined(WIN32) || defined(__amigaos4__)
-# define YYTOKENTYPE
-#endif
#include "perly.h"
#undef _XPVMG_HEAD
#undef _XPVCV_COMMON
-typedef struct _sublex_info SUBLEXINFO;
-struct _sublex_info {
- U8 super_state; /* lexer state to save */
- U16 sub_inwhat; /* "lex_inwhat" to use */
- OP *sub_op; /* "lex_op" to use */
- SV *repl; /* replacement of s/// or y/// */
-};
-
#include "parser.h"
typedef struct magic_state MGS; /* struct magic_state defined in mg.c */
#define DEBUG_DB_RECURSE_FLAG 0x40000000
#define DEBUG_TOP_FLAG 0x80000000 /* -D was given --> PL_debug |= FLAG */
-# define DEBUG_p_TEST_ (PL_debug & DEBUG_p_FLAG)
-# define DEBUG_s_TEST_ (PL_debug & DEBUG_s_FLAG)
-# define DEBUG_l_TEST_ (PL_debug & DEBUG_l_FLAG)
-# define DEBUG_t_TEST_ (PL_debug & DEBUG_t_FLAG)
-# define DEBUG_o_TEST_ (PL_debug & DEBUG_o_FLAG)
-# define DEBUG_c_TEST_ (PL_debug & DEBUG_c_FLAG)
-# define DEBUG_P_TEST_ (PL_debug & DEBUG_P_FLAG)
-# define DEBUG_m_TEST_ (PL_debug & DEBUG_m_FLAG)
-# define DEBUG_f_TEST_ (PL_debug & DEBUG_f_FLAG)
-# define DEBUG_r_TEST_ (PL_debug & DEBUG_r_FLAG)
-# define DEBUG_x_TEST_ (PL_debug & DEBUG_x_FLAG)
-# define DEBUG_u_TEST_ (PL_debug & DEBUG_u_FLAG)
-# define DEBUG_U_TEST_ (PL_debug & DEBUG_U_FLAG)
-# define DEBUG_H_TEST_ (PL_debug & DEBUG_H_FLAG)
-# define DEBUG_X_TEST_ (PL_debug & DEBUG_X_FLAG)
-# define DEBUG_D_TEST_ (PL_debug & DEBUG_D_FLAG)
-# define DEBUG_S_TEST_ (PL_debug & DEBUG_S_FLAG)
-# define DEBUG_T_TEST_ (PL_debug & DEBUG_T_FLAG)
-# define DEBUG_R_TEST_ (PL_debug & DEBUG_R_FLAG)
-# define DEBUG_J_TEST_ (PL_debug & DEBUG_J_FLAG)
-# define DEBUG_v_TEST_ (PL_debug & DEBUG_v_FLAG)
-# define DEBUG_C_TEST_ (PL_debug & DEBUG_C_FLAG)
-# define DEBUG_A_TEST_ (PL_debug & DEBUG_A_FLAG)
-# define DEBUG_q_TEST_ (PL_debug & DEBUG_q_FLAG)
-# define DEBUG_M_TEST_ (PL_debug & DEBUG_M_FLAG)
-# define DEBUG_B_TEST_ (PL_debug & DEBUG_B_FLAG)
-# define DEBUG_L_TEST_ (PL_debug & DEBUG_L_FLAG)
-# define DEBUG_i_TEST_ (PL_debug & DEBUG_i_FLAG)
+# define DEBUG_p_TEST_ UNLIKELY(PL_debug & DEBUG_p_FLAG)
+# define DEBUG_s_TEST_ UNLIKELY(PL_debug & DEBUG_s_FLAG)
+# define DEBUG_l_TEST_ UNLIKELY(PL_debug & DEBUG_l_FLAG)
+# define DEBUG_t_TEST_ UNLIKELY(PL_debug & DEBUG_t_FLAG)
+# define DEBUG_o_TEST_ UNLIKELY(PL_debug & DEBUG_o_FLAG)
+# define DEBUG_c_TEST_ UNLIKELY(PL_debug & DEBUG_c_FLAG)
+# define DEBUG_P_TEST_ UNLIKELY(PL_debug & DEBUG_P_FLAG)
+# define DEBUG_m_TEST_ UNLIKELY(PL_debug & DEBUG_m_FLAG)
+# define DEBUG_f_TEST_ UNLIKELY(PL_debug & DEBUG_f_FLAG)
+# define DEBUG_r_TEST_ UNLIKELY(PL_debug & DEBUG_r_FLAG)
+# define DEBUG_x_TEST_ UNLIKELY(PL_debug & DEBUG_x_FLAG)
+# define DEBUG_u_TEST_ UNLIKELY(PL_debug & DEBUG_u_FLAG)
+# define DEBUG_U_TEST_ UNLIKELY(PL_debug & DEBUG_U_FLAG)
+# define DEBUG_H_TEST_ UNLIKELY(PL_debug & DEBUG_H_FLAG)
+# define DEBUG_X_TEST_ UNLIKELY(PL_debug & DEBUG_X_FLAG)
+# define DEBUG_D_TEST_ UNLIKELY(PL_debug & DEBUG_D_FLAG)
+# define DEBUG_S_TEST_ UNLIKELY(PL_debug & DEBUG_S_FLAG)
+# define DEBUG_T_TEST_ UNLIKELY(PL_debug & DEBUG_T_FLAG)
+# define DEBUG_R_TEST_ UNLIKELY(PL_debug & DEBUG_R_FLAG)
+# define DEBUG_J_TEST_ UNLIKELY(PL_debug & DEBUG_J_FLAG)
+# define DEBUG_v_TEST_ UNLIKELY(PL_debug & DEBUG_v_FLAG)
+# define DEBUG_C_TEST_ UNLIKELY(PL_debug & DEBUG_C_FLAG)
+# define DEBUG_A_TEST_ UNLIKELY(PL_debug & DEBUG_A_FLAG)
+# define DEBUG_q_TEST_ UNLIKELY(PL_debug & DEBUG_q_FLAG)
+# define DEBUG_M_TEST_ UNLIKELY(PL_debug & DEBUG_M_FLAG)
+# define DEBUG_B_TEST_ UNLIKELY(PL_debug & DEBUG_B_FLAG)
+# define DEBUG_L_TEST_ UNLIKELY(PL_debug & DEBUG_L_FLAG)
+# define DEBUG_i_TEST_ UNLIKELY(PL_debug & DEBUG_i_FLAG)
# define DEBUG_Xv_TEST_ (DEBUG_X_TEST_ && DEBUG_v_TEST_)
# define DEBUG_Uv_TEST_ (DEBUG_U_TEST_ && DEBUG_v_TEST_)
# define DEBUG_Pv_TEST_ (DEBUG_P_TEST_ && DEBUG_v_TEST_)
/* Temporarily turn off memory debugging in case the a
* does memory allocation, either directly or indirectly. */
# define DEBUG_m(a) \
- STMT_START { \
- if (PERL_GET_INTERP) { dTHX; if (DEBUG_m_TEST) {PL_debug&=~DEBUG_m_FLAG; a; PL_debug|=DEBUG_m_FLAG;} } \
+ STMT_START { \
+ if (PERL_GET_INTERP) { \
+ dTHX; \
+ if (DEBUG_m_TEST) { \
+ PL_debug &= ~DEBUG_m_FLAG; \
+ a; \
+ PL_debug |= DEBUG_m_FLAG; \
+ } \
+ } \
} STMT_END
-# define DEBUG__(t, a) \
- STMT_START { \
- if (t) STMT_START {a;} STMT_END; \
- } STMT_END
+# define DEBUG__(t, a) \
+ STMT_START { \
+ if (t) STMT_START {a;} STMT_END; \
+ } STMT_END
# define DEBUG_f(a) DEBUG__(DEBUG_f_TEST, a)
+
#ifndef PERL_EXT_RE_BUILD
# define DEBUG_r(a) DEBUG__(DEBUG_r_TEST, a)
#else
# define DEBUG_r(a) STMT_START {a;} STMT_END
#endif /* PERL_EXT_RE_BUILD */
+
# define DEBUG_x(a) DEBUG__(DEBUG_x_TEST, a)
# define DEBUG_u(a) DEBUG__(DEBUG_u_TEST, a)
# define DEBUG_U(a) DEBUG__(DEBUG_U_TEST, a)
EXTCONST char PL_uuemap[65]
INIT("`!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_");
+/* a special string address whose value is "isa", but which perl knows
+ * to treat as if it were really "DOES" when printing the method name in
+ * the "Can't call method '%s'" error message */
+EXTCONST char PL_isa_DOES[]
+ INIT("isa");
+
#ifdef DOINIT
EXTCONST char PL_uudmap[256] =
# ifdef PERL_MICRO
#endif /* !PERL_CORE */
#define PL_hints PL_compiling.cop_hints
+#define PL_maxo MAXO
END_EXTERN_C
/* update exp_name[] in toke.c if adding to this enum */
} expectation;
+#define KEY_sigvar 0xFFFF /* fake keyword representing a signature var */
+
/* Hints are now stored in a dedicated U32, so the bottom 8 bits are no longer
special and there is no need for HINT_PRIVATE_MASK for COPs
However, bitops store HINT_INTEGER in their op_private.
/* In C99 we could use designated (named field) union initializers.
* In C89 we need to initialize the member declared first.
+ * In C++ we need extern C initializers.
*
* With the U8_NV version you will want to have inner braces,
- * while with the NV_U8 use just the NV.*/
-#define INFNAN_U8_NV_DECL EXTCONST union { U8 u8[NVSIZE]; NV nv; }
-#define INFNAN_NV_U8_DECL EXTCONST union { NV nv; U8 u8[NVSIZE]; }
-
-#ifdef DOINIT
-
-/* PL_inf and PL_nan initialization.
- *
- * For inf and nan initialization the ultimate fallback is dividing
- * one or zero by zero: however, some compilers will warn or even fail
- * on divide-by-zero, but hopefully something earlier will work.
- *
- * If you are thinking of using HUGE_VAL for infinity, or using
- * <math.h> functions to generate NV_INF (e.g. exp(1e9), log(-1.0)),
- * stop. Neither will work portably: HUGE_VAL can be just DBL_MAX,
- * and the math functions might be just generating DBL_MAX, or even zero.
- *
- * Also, do NOT try doing NV_NAN based on NV_INF and trying (NV_INF-NV_INF).
- * Though logically correct, some compilers (like Visual C 2003)
- * falsely misoptimize that to zero (x-x is always zero, right?)
- *
- * Finally, note that not all floating point formats define Inf (or NaN).
- * For the infinity a large number may be used instead. Operations that
- * under the IEEE floating point would return Inf or NaN may return
- * either large numbers (positive or negative), or they may cause
- * a floating point exception or some other fault.
- */
-
-/* The quadmath literals are anon structs which -Wc++-compat doesn't like. */
-GCC_DIAG_IGNORE(-Wc++-compat)
-
-# ifdef USE_QUADMATH
-/* Cannot use HUGE_VALQ for PL_inf because not a compile-time
- * constant. */
-INFNAN_NV_U8_DECL PL_inf = { 1.0Q/0.0Q };
-# elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES)
-INFNAN_U8_NV_DECL PL_inf = { { LONGDBLINFBYTES } };
-# elif NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES)
-INFNAN_U8_NV_DECL PL_inf = { { DOUBLEINFBYTES } };
-# else
-# if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
-# if defined(LDBL_INFINITY)
-INFNAN_NV_U8_DECL PL_inf = { LDBL_INFINITY };
-# elif defined(LDBL_INF)
-INFNAN_NV_U8_DECL PL_inf = { LDBL_INF };
-# elif defined(INFINITY)
-INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
-# elif defined(INF)
-INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
-# else
-INFNAN_NV_U8_DECL PL_inf = { 1.0L/0.0L }; /* keep last */
-# endif
-# else
-# if defined(DBL_INFINITY)
-INFNAN_NV_U8_DECL PL_inf = { DBL_INFINITY };
-# elif defined(DBL_INF)
-INFNAN_NV_U8_DECL PL_inf = { DBL_INF };
-# elif defined(INFINITY) /* C99 */
-INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
-# elif defined(INF)
-INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
-# else
-INFNAN_NV_U8_DECL PL_inf = { 1.0/0.0 }; /* keep last */
-# endif
-# endif
-# endif
-
-# ifdef USE_QUADMATH
-/* Cannot use nanq("0") for PL_nan because not a compile-time
- * constant. */
-INFNAN_NV_U8_DECL PL_nan = { 0.0Q/0.0Q };
-# elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES)
-INFNAN_U8_NV_DECL PL_nan = { { LONGDBLNANBYTES } };
-# elif NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES)
-INFNAN_U8_NV_DECL PL_nan = { { DOUBLENANBYTES } };
-# else
-# if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
-# if defined(LDBL_NAN)
-INFNAN_NV_U8_DECL PL_nan = { LDBL_NAN };
-# elif defined(LDBL_QNAN)
-INFNAN_NV_U8_DECL PL_nan = { LDBL_QNAN };
-# elif defined(NAN)
-INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
-# else
-INFNAN_NV_U8_DECL PL_nan = { 0.0L/0.0L }; /* keep last */
-# endif
-# else
-# if defined(DBL_NAN)
-INFNAN_NV_U8_DECL PL_nan = { DBL_NAN };
-# elif defined(DBL_QNAN)
-INFNAN_NV_U8_DECL PL_nan = { DBL_QNAN };
-# elif defined(NAN) /* C99 */
-INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
-# else
-INFNAN_NV_U8_DECL PL_nan = { 0.0/0.0 }; /* keep last */
-# endif
-# endif
-# endif
-
-GCC_DIAG_RESTORE
+ * while with the NV_U8 use just the NV. */
+#ifdef __cplusplus
+#define INFNAN_U8_NV_DECL EXTERN_C const union { U8 u8[NVSIZE]; NV nv; }
+#define INFNAN_NV_U8_DECL EXTERN_C const union { NV nv; U8 u8[NVSIZE]; }
#else
-
-INFNAN_NV_U8_DECL PL_inf;
-INFNAN_NV_U8_DECL PL_nan;
-
-#endif
-
-/* If you have not defined NV_INF/NV_NAN (like for example win32/win32.h),
- * we will define NV_INF/NV_NAN as the nv part of the global const
- * PL_inf/PL_nan. Note, however, that the preexisting NV_INF/NV_NAN
- * might not be a compile-time constant, in which case it cannot be
- * used to initialize PL_inf/PL_nan above. */
-#ifndef NV_INF
-# define NV_INF PL_inf.nv
-#endif
-#ifndef NV_NAN
-# define NV_NAN PL_nan.nv
+#define INFNAN_U8_NV_DECL EXTCONST union { U8 u8[NVSIZE]; NV nv; }
+#define INFNAN_NV_U8_DECL EXTCONST union { NV nv; U8 u8[NVSIZE]; }
#endif
/* if these never got defined, they need defaults */
/* These locale things are all subject to change */
# define LOCALE_INIT MUTEX_INIT(&PL_locale_mutex)
-# define LOCALE_TERM MUTEX_DESTROY(&PL_locale_mutex)
+
+# ifdef USE_THREAD_SAFE_LOCALE
+# define LOCALE_TERM \
+ STMT_START { \
+ MUTEX_DESTROY(&PL_locale_mutex); \
+ if (PL_C_locale_obj) { \
+ /* Make sure we aren't using the locale \
+ * space we are about to free */ \
+ uselocale(LC_GLOBAL_LOCALE); \
+ freelocale(PL_C_locale_obj); \
+ PL_C_locale_obj = (locale_t) NULL; \
+ } \
+ } STMT_END
+ }
+# else
+# define LOCALE_TERM MUTEX_DESTROY(&PL_locale_mutex)
+# endif
# define LOCALE_LOCK MUTEX_LOCK(&PL_locale_mutex)
# define LOCALE_UNLOCK MUTEX_UNLOCK(&PL_locale_mutex)
/* Returns TRUE if the plain locale pragma without a parameter is in effect
*/
-# define IN_LOCALE_RUNTIME cBOOL(CopHINTS_get(PL_curcop) & HINT_LOCALE)
+# define IN_LOCALE_RUNTIME (PL_curcop \
+ && CopHINTS_get(PL_curcop) & HINT_LOCALE)
/* Returns TRUE if either form of the locale pragma is in effect */
# define IN_SOME_LOCALE_FORM_RUNTIME \
# define IN_LC_PARTIAL_COMPILETIME cBOOL(PL_hints & HINT_LOCALE_PARTIAL)
# define IN_LC_PARTIAL_RUNTIME \
- cBOOL(CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL)
+ (PL_curcop && CopHINTS_get(PL_curcop) & HINT_LOCALE_PARTIAL)
# define IN_LC_COMPILETIME(category) \
(IN_LC_ALL_COMPILETIME || (IN_LC_PARTIAL_COMPILETIME \
STMT_START { \
if (! PL_in_utf8_CTYPE_locale && ckWARN(WARN_LOCALE)) { \
Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
- "Wide character (U+%"UVXf") in %s", \
- (UV) cp, OP_DESC(PL_op)); \
+ "Wide character (U+%" UVXf ") in %s",\
+ (UV) cp, OP_DESC(PL_op)); \
} \
} STMT_END
if (! PL_in_utf8_CTYPE_locale && ckWARN(WARN_LOCALE)) { \
UV cp = utf8_to_uvchr_buf((U8 *) s, (U8 *) send, NULL); \
Perl_warner(aTHX_ packWARN(WARN_LOCALE), \
- "Wide character (U+%"UVXf") in %s", \
+ "Wide character (U+%" UVXf ") in %s", \
(cp == 0) \
? UNICODE_REPLACEMENT \
: (UV) cp, \
# endif /* PERL_CORE or PERL_IN_XSUB_RE */
+#if defined(USE_ITHREADS) \
+ && defined(HAS_NEWLOCALE) \
+ && defined(LC_ALL_MASK) \
+ && defined(HAS_FREELOCALE) \
+ && defined(HAS_USELOCALE) \
+ && ! defined(NO_THREAD_SAFE_USELOCALE)
+
+ /* The code is written for simplicity to assume that any platform advanced
+ * enough to have the Posix 2008 locale functions has LC_ALL. The test
+ * above makes sure that assumption is valid */
+
+# define USE_THREAD_SAFE_LOCALE
+#endif
+
#else /* No locale usage */
# define LOCALE_INIT
# define LOCALE_TERM
/* The VAX fp formats are neither consistently little-endian nor
* big-endian, and neither are they really IEEE-mixed endian like
* the mixed-endian ARM IEEE formats (with swapped bytes).
- * Ultimately, the VAX format ultimately came from the PDP.
+ * Ultimately, the VAX format came from the PDP-11.
*
* The ordering of the parts in VAX floats is quite vexing.
* In the below the fraction_n are the mantissa bits.
+ *
* The fraction_1 is the most significant (numbering as by DEC/Digital),
* while the rightmost bit in each fraction is the least significant:
* in other words, big-endian bit order within the fractions.
+ *
* The fraction segments themselves would be big-endianly, except that
- * within 32 bit segments the less significant comes first, the more
+ * within 32 bit segments the less significant half comes first, the more
* significant after, except that in the format H (used for long doubles)
- * the first fraction segment is on its own. As promised, vexing.
+ * the first fraction segment is alone, because the exponent is wider.
* This means for example that both the most and the least significant
* bits can be in the middle of the floats, not at either end.
*
* http://h71000.www7.hp.com/doc/82final/6443/6443pro_028.html
* (somebody at HP should be fired for the URLs)
*
- * F fraction_2:16 sign:1 exp:7 fraction_1:7
- * (exponent bias 128)
+ * F fraction_2:16 sign:1 exp:8 fraction_1:7
+ * (exponent bias 128, hidden first one-bit)
*
- * D fraction_2:16 sign:1 exp:7 fraction_1:7
+ * D fraction_2:16 sign:1 exp:8 fraction_1:7
* fraction_4:16 fraction_3:16
- * (exponent bias 128)
+ * (exponent bias 128, hidden first one-bit)
*
* G fraction_2:16 sign:1 exp:11 fraction_1:4
* fraction_4:16 fraction_3:16
- * (exponent bias 1024)
+ * (exponent bias 1024, hidden first one-bit)
*
* H fraction_1:16 sign:1 exp:15
* fraction_3:16 fraction_2:16
* fraction_5:16 fraction_4:16
* fraction_7:16 fraction_6:16
- * (exponent bias 16384)
+ * (exponent bias 16384, hidden first one-bit)
+ * (available only on VAX, and only on Fortran?)
+ *
+ * The formats S, T and X are available on the Alpha (and Itanium,
+ * also known as I64/IA64) and are equivalent with the IEEE-754 formats
+ * binary32, binary64, and binary128 (commonly: float, double, long double).
+ *
+ * S sign:1 exp:8 mantissa:23
+ * (exponent bias 127, hidden first one-bit)
+ *
+ * T sign:1 exp:11 mantissa:52
+ * (exponent bias 1022, hidden first one-bit)
+ *
+ * X sign:1 exp:15 mantissa:112
+ * (exponent bias 16382, hidden first one-bit)
*
- * The formats T and X are available on the Alpha (and IA64?)
- * and are equivalent with the IEEE 754 64 and 128 bit formats.
*/
#ifdef DOUBLE_IS_VAX_FLOAT
#ifdef DOUBLE_IS_IEEE_FORMAT
/* All the basic IEEE formats have the implicit bit,
- * except for the 80-bit extended formats, which will undef this. */
+ * except for the x86 80-bit extended formats, which will undef this.
+ * Also note that the IEEE 754 subnormals (formerly known as denormals)
+ * do not have the implicit bit of one. */
# define NV_IMPLICIT_BIT
#endif
# define LONGDOUBLE_X86_80_BIT
# ifdef USE_LONG_DOUBLE
# undef NV_IMPLICIT_BIT
+# define NV_X86_80_BIT
# endif
# endif
# define LONGDOUBLE_DOUBLEDOUBLE
# endif
+# if LONG_DOUBLEKIND == LONG_DOUBLE_IS_VAX_H_FLOAT
+# define LONGDOUBLE_VAX_ENDIAN
+# endif
+
#endif /* LONG_DOUBLEKIND */
#ifdef USE_QUADMATH /* assume quadmath endianness == native double endianness */
# ifdef LONGDOUBLE_MIX_ENDIAN
# define NV_MIX_ENDIAN
# endif
+# ifdef LONGDOUBLE_VAX_ENDIAN
+# define NV_VAX_ENDIAN
+# endif
#endif
#ifdef DOUBLE_IS_IEEE_FORMAT
#ifdef DOUBLE_HAS_NAN
+#ifdef DOINIT
+
+/* PL_inf and PL_nan initialization.
+ *
+ * For inf and nan initialization the ultimate fallback is dividing
+ * one or zero by zero: however, some compilers will warn or even fail
+ * on divide-by-zero, but hopefully something earlier will work.
+ *
+ * If you are thinking of using HUGE_VAL for infinity, or using
+ * <math.h> functions to generate NV_INF (e.g. exp(1e9), log(-1.0)),
+ * stop. Neither will work portably: HUGE_VAL can be just DBL_MAX,
+ * and the math functions might be just generating DBL_MAX, or even zero.
+ *
+ * Also, do NOT try doing NV_NAN based on NV_INF and trying (NV_INF-NV_INF).
+ * Though logically correct, some compilers (like Visual C 2003)
+ * falsely misoptimize that to zero (x-x is always zero, right?)
+ *
+ * Finally, note that not all floating point formats define Inf (or NaN).
+ * For the infinity a large number may be used instead. Operations that
+ * under the IEEE floating point would return Inf or NaN may return
+ * either large numbers (positive or negative), or they may cause
+ * a floating point exception or some other fault.
+ */
+
+/* The quadmath literals are anon structs which -Wc++-compat doesn't like. */
+GCC_DIAG_IGNORE(-Wc++-compat)
+
+# ifdef USE_QUADMATH
+/* Cannot use HUGE_VALQ for PL_inf because not a compile-time
+ * constant. */
+INFNAN_NV_U8_DECL PL_inf = { 1.0Q/0.0Q };
+# elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLINFBYTES)
+INFNAN_U8_NV_DECL PL_inf = { { LONGDBLINFBYTES } };
+# elif NVSIZE == DOUBLESIZE && defined(DOUBLEINFBYTES)
+INFNAN_U8_NV_DECL PL_inf = { { DOUBLEINFBYTES } };
+# else
+# if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
+# if defined(LDBL_INFINITY)
+INFNAN_NV_U8_DECL PL_inf = { LDBL_INFINITY };
+# elif defined(LDBL_INF)
+INFNAN_NV_U8_DECL PL_inf = { LDBL_INF };
+# elif defined(INFINITY)
+INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
+# elif defined(INF)
+INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
+# else
+INFNAN_NV_U8_DECL PL_inf = { 1.0L/0.0L }; /* keep last */
+# endif
+# else
+# if defined(DBL_INFINITY)
+INFNAN_NV_U8_DECL PL_inf = { DBL_INFINITY };
+# elif defined(DBL_INF)
+INFNAN_NV_U8_DECL PL_inf = { DBL_INF };
+# elif defined(INFINITY) /* C99 */
+INFNAN_NV_U8_DECL PL_inf = { (NV)INFINITY };
+# elif defined(INF)
+INFNAN_NV_U8_DECL PL_inf = { (NV)INF };
+# else
+INFNAN_NV_U8_DECL PL_inf = { 1.0/0.0 }; /* keep last */
+# endif
+# endif
+# endif
+
+# ifdef USE_QUADMATH
+/* Cannot use nanq("0") for PL_nan because not a compile-time
+ * constant. */
+INFNAN_NV_U8_DECL PL_nan = { 0.0Q/0.0Q };
+# elif NVSIZE == LONG_DOUBLESIZE && defined(LONGDBLNANBYTES)
+INFNAN_U8_NV_DECL PL_nan = { { LONGDBLNANBYTES } };
+# elif NVSIZE == DOUBLESIZE && defined(DOUBLENANBYTES)
+INFNAN_U8_NV_DECL PL_nan = { { DOUBLENANBYTES } };
+# else
+# if NVSIZE == LONG_DOUBLESIZE && defined(USE_LONG_DOUBLE)
+# if defined(LDBL_NAN)
+INFNAN_NV_U8_DECL PL_nan = { LDBL_NAN };
+# elif defined(LDBL_QNAN)
+INFNAN_NV_U8_DECL PL_nan = { LDBL_QNAN };
+# elif defined(NAN)
+INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
+# else
+INFNAN_NV_U8_DECL PL_nan = { 0.0L/0.0L }; /* keep last */
+# endif
+# else
+# if defined(DBL_NAN)
+INFNAN_NV_U8_DECL PL_nan = { DBL_NAN };
+# elif defined(DBL_QNAN)
+INFNAN_NV_U8_DECL PL_nan = { DBL_QNAN };
+# elif defined(NAN) /* C99 */
+INFNAN_NV_U8_DECL PL_nan = { (NV)NAN };
+# else
+INFNAN_NV_U8_DECL PL_nan = { 0.0/0.0 }; /* keep last */
+# endif
+# endif
+# endif
+
+GCC_DIAG_RESTORE
+
+#else
+
+INFNAN_NV_U8_DECL PL_inf;
+INFNAN_NV_U8_DECL PL_nan;
+
+#endif
+
+/* If you have not defined NV_INF/NV_NAN (like for example win32/win32.h),
+ * we will define NV_INF/NV_NAN as the nv part of the global const
+ * PL_inf/PL_nan. Note, however, that the preexisting NV_INF/NV_NAN
+ * might not be a compile-time constant, in which case it cannot be
+ * used to initialize PL_inf/PL_nan above. */
+#ifndef NV_INF
+# define NV_INF PL_inf.nv
+#endif
+#ifndef NV_NAN
+# define NV_NAN PL_nan.nv
+#endif
+
/* NaNs (not-a-numbers) can carry payload bits, in addition to
* "nan-ness". Part of the payload is the quiet/signaling bit.
* To back up a bit (harhar):
#endif /* DOUBLE_HAS_NAN */
+
/*
(KEEP THIS LAST IN perl.h!)
https://perl5.git.perl.org / perl5.git / blobdiff