#endif
/*
- * STMT_START { statements; } STMT_END;
- * can be used as a single statement, as in
- * if (x) STMT_START { ... } STMT_END; else ...
- *
- * Trying to select a version that gives no warnings...
- */
+=head1 Miscellaneous Functions
+
+=for apidoc AmnUu|void|STMT_START
+
+ STMT_START { statements; } STMT_END;
+
+can be used as a single statement, as in
+
+ if (x) STMT_START { ... } STMT_END; else ...
+
+These are often used in macro definitions. Note that you can't return a value
+out of them.
+
+=for apidoc AmnUhu|void|STMT_END
+
+=cut
+
+ Trying to select a version that gives no warnings...
+*/
#if !(defined(STMT_START) && defined(STMT_END))
# ifdef PERL_USE_GCC_BRACE_GROUPS
# define STMT_START (void)( /* gcc supports "({ STATEMENTS; })" */
This replaces any read-only SV with a fresh SV and removes any magic.
+=for apidoc Am|void|SANE_ERRSV
+
+Clean up ERRSV so we can safely set it.
+
+This replaces any read-only SV with a fresh writable copy and removes
+any magic.
+
=cut
*/
} \
} STMT_END
+/* contains inlined gv_add_by_type */
+#define SANE_ERRSV() STMT_START { \
+ SV ** const svp = &GvSV(PL_errgv); \
+ if (!*svp) { \
+ *svp = newSVpvs(""); \
+ } else if (SvREADONLY(*svp)) { \
+ SV *dupsv = newSVsv(*svp); \
+ SvREFCNT_dec_NN(*svp); \
+ *svp = dupsv; \
+ } else { \
+ SV *const errsv = *svp; \
+ if (SvMAGICAL(errsv)) { \
+ mg_free(errsv); \
+ } \
+ } \
+ } STMT_END
+
#ifdef PERL_CORE
# define DEFSV (0 + GvSVn(PL_defgv))
* longer need that. XS modules can (and do) use this name, so it must remain
* a part of the API that's visible to modules.
+=head1 Miscellaneous Functions
+
=for apidoc ATmD|int|my_sprintf|NN char *buffer|NN const char *pat|...
Do NOT use this due to the possibility of overflowing C<buffer>. Instead use
# define PERL_QUAD_MIN (-PERL_QUAD_MAX - ((3 & -1) == 3))
#endif
+/*
+=head1 Numeric functions
+
+=for apidoc AmnUh||PERL_INT_MIN
+=for apidoc AmnUh||PERL_LONG_MAX
+=for apidoc AmnUh||PERL_LONG_MIN
+=for apidoc AmnUh||PERL_QUAD_MAX
+=for apidoc AmnUh||PERL_SHORT_MAX
+=for apidoc AmnUh||PERL_SHORT_MIN
+=for apidoc AmnUh||PERL_UCHAR_MAX
+=for apidoc AmnUh||PERL_UCHAR_MIN
+=for apidoc AmnUh||PERL_UINT_MAX
+=for apidoc AmnUh||PERL_ULONG_MAX
+=for apidoc AmnUh||PERL_ULONG_MIN
+=for apidoc AmnUh||PERL_UQUAD_MAX
+=for apidoc AmnUh||PERL_UQUAD_MIN
+=for apidoc AmnUh||PERL_USHORT_MAX
+=for apidoc AmnUh||PERL_USHORT_MIN
+=for apidoc AmnUh||PERL_QUAD_MIN
+=for apidoc AmnU||PERL_INT_MAX
+This and
+C<PERL_INT_MIN>,
+C<PERL_LONG_MAX>,
+C<PERL_LONG_MIN>,
+C<PERL_QUAD_MAX>,
+C<PERL_SHORT_MAX>,
+C<PERL_SHORT_MIN>,
+C<PERL_UCHAR_MAX>,
+C<PERL_UCHAR_MIN>,
+C<PERL_UINT_MAX>,
+C<PERL_ULONG_MAX>,
+C<PERL_ULONG_MIN>,
+C<PERL_UQUAD_MAX>,
+C<PERL_UQUAD_MIN>,
+C<PERL_USHORT_MAX>,
+C<PERL_USHORT_MIN>,
+C<PERL_QUAD_MIN>
+give the largest and smallest number representable in the current
+platform in variables of the corresponding types.
+
+For signed types, the smallest representable number is the most negative
+number, the one furthest away from zero.
+
+For C99 and later compilers, these correspond to things like C<INT_MAX>, which
+are available to the C code. But these constants, furnished by Perl,
+allow code compiled on earlier compilers to portably have access to the same
+constants.
+
+=cut
+
+*/
+
typedef MEM_SIZE STRLEN;
typedef struct op OP;
#else
# define EXPECT(expr,val) (expr)
#endif
+
+/*
+=head1 Miscellaneous Functions
+
+=for apidoc AmU|bool|LIKELY|const bool expr
+
+Returns the input unchanged, but at the same time it gives a branch prediction
+hint to the compiler that this condition is likely to be true.
+
+=for apidoc AmU|bool|UNLIKELY|const bool expr
+
+Returns the input unchanged, but at the same time it gives a branch prediction
+hint to the compiler that this condition is likely to be false.
+
+=cut
+*/
#define LIKELY(cond) EXPECT(cBOOL(cond),TRUE)
#define UNLIKELY(cond) EXPECT(cBOOL(cond),FALSE)
+
#ifdef HAS_BUILTIN_CHOOSE_EXPR
/* placeholder */
#endif
# define IN_SOME_LOCALE_FORM_COMPILETIME \
cBOOL(PL_hints & (HINT_LOCALE|HINT_LOCALE_PARTIAL))
+/*
+=head1 Locale-related functions and macros
+
+=for apidoc Amn|bool|IN_LOCALE
+
+Evaluates to TRUE if the plain locale pragma without a parameter (S<C<use
+locale>>) is in effect.
+
+=for apidoc Amn|bool|IN_LOCALE_COMPILETIME
+
+Evaluates to TRUE if, when compiling a perl program (including an C<eval>) if
+the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
+
+=for apidoc Amn|bool|IN_LOCALE_RUNTIME
+
+Evaluates to TRUE if, when executing a perl program (including an C<eval>) if
+the plain locale pragma without a parameter (S<C<use locale>>) is in effect.
+
+=cut
+*/
+
# define IN_LOCALE \
(IN_PERL_COMPILETIME ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)
# define IN_SOME_LOCALE_FORM \
# if defined (PERL_CORE) || defined (PERL_IN_XSUB_RE)
/* This internal macro should be called from places that operate under
- * locale rules. It there is a problem with the current locale that
+ * locale rules. If there is a problem with the current locale that
* hasn't been raised yet, it will output a warning this time. Because
* this will so rarely be true, there is no point to optimize for time;
* instead it makes sense to minimize space used and do all the work in
On threaded perls not operating with thread-safe functionality, this macro uses
a mutex to force a critical section. Therefore the matching RESTORE should be
-close by, and guaranteed to be called.
+close by, and guaranteed to be called; see L</WITH_LC_NUMERIC_SET_TO_NEEDED>
+for a more contained way to ensure that.
+
+=for apidoc Am|void|STORE_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric
+
+Same as L</STORE_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
+as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
+responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
+cannot have changed since the precalculation.
=for apidoc Am|void|RESTORE_LC_NUMERIC
...
}
-=for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED
+=for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED|block
This macro invokes the supplied statement or block within the context
of a L</STORE_LC_NUMERIC_SET_TO_NEEDED> .. L</RESTORE_LC_NUMERIC> pair
#endif
}
+=for apidoc Am|void|WITH_LC_NUMERIC_SET_TO_NEEDED_IN|bool in_lc_numeric|block
+
+Same as L</WITH_LC_NUMERIC_SET_TO_NEEDED> with in_lc_numeric provided
+as the precalculated value of C<IN_LC(LC_NUMERIC)>. It is the caller's
+responsibility to ensure that the status of C<PL_compiling> and C<PL_hints>
+cannot have changed since the precalculation.
+
=cut
*/
# define DECLARATION_FOR_LC_NUMERIC_MANIPULATION \
void (*_restore_LC_NUMERIC_function)(pTHX) = NULL
-# define STORE_LC_NUMERIC_SET_TO_NEEDED() \
+# define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in) \
STMT_START { \
+ bool _in_lc_numeric = (in); \
LC_NUMERIC_LOCK( \
- ( ( IN_LC(LC_NUMERIC) && _NOT_IN_NUMERIC_UNDERLYING) \
- || (! IN_LC(LC_NUMERIC) && _NOT_IN_NUMERIC_STANDARD)));\
- if (IN_LC(LC_NUMERIC)) { \
+ ( ( _in_lc_numeric && _NOT_IN_NUMERIC_UNDERLYING) \
+ || (! _in_lc_numeric && _NOT_IN_NUMERIC_STANDARD))); \
+ if (_in_lc_numeric) { \
if (_NOT_IN_NUMERIC_UNDERLYING) { \
Perl_set_numeric_underlying(aTHX); \
_restore_LC_NUMERIC_function \
} \
} STMT_END
+# define STORE_LC_NUMERIC_SET_TO_NEEDED() \
+ STORE_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC))
+
# define RESTORE_LC_NUMERIC() \
STMT_START { \
if (_restore_LC_NUMERIC_function) { \
__FILE__, __LINE__, PL_numeric_standard)); \
} STMT_END
-# define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
+# define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
STMT_START { \
DECLARATION_FOR_LC_NUMERIC_MANIPULATION; \
- STORE_LC_NUMERIC_SET_TO_NEEDED(); \
+ STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric); \
block; \
RESTORE_LC_NUMERIC(); \
} STMT_END;
+# define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
+ WITH_LC_NUMERIC_SET_TO_NEEDED_IN(IN_LC(LC_NUMERIC), block)
+
#else /* !USE_LOCALE_NUMERIC */
# define SET_NUMERIC_STANDARD()
# define DECLARATION_FOR_LC_NUMERIC_MANIPULATION
# define STORE_LC_NUMERIC_SET_STANDARD()
# define STORE_LC_NUMERIC_FORCE_TO_UNDERLYING()
+# define STORE_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric)
# define STORE_LC_NUMERIC_SET_TO_NEEDED()
# define RESTORE_LC_NUMERIC()
# define LOCK_LC_NUMERIC_STANDARD()
# define UNLOCK_LC_NUMERIC_STANDARD()
+# define WITH_LC_NUMERIC_SET_TO_NEEDED_IN(in_lc_numeric, block) \
+ STMT_START { block; } STMT_END
# define WITH_LC_NUMERIC_SET_TO_NEEDED(block) \
STMT_START { block; } STMT_END
#endif /* !USE_LOCALE_NUMERIC */
#define Atof my_atof
-/* XXX document this , maybe other similar ones*/
+
+/*
+
+=head1 Numeric functions
+
+=for apidoc AmTR|NV|Strtod|NN const char * const s|NULLOK char ** e
+
+This is a synonym for L</my_strtod>.
+
+=for apidoc AmTR|NV|Strtol|NN const char * const s|NULLOK char ** e|int base
+
+Platform and configuration independent C<strtol>. This expands to the
+appropriate C<strotol>-like function based on the platform and F<Configure>
+options>. For example it could expand to C<strtoll> or C<strtoq> instead of
+C<strtol>.
+
+=for apidoc AmTR|NV|Strtoul|NN const char * const s|NULLOK char ** e|int base
+
+Platform and configuration independent C<strtoul>. This expands to the
+appropriate C<strotoul>-like function based on the platform and F<Configure>
+options>. For example it could expand to C<strtoull> or C<strtouq> instead of
+C<strtoul>.
+
+=cut
+
+*/
+
#define Strtod my_strtod
#if defined(HAS_STRTOD) \
#define IS_NUMBER_NAN 0x20 /* this is not */
#define IS_NUMBER_TRAILING 0x40 /* number has trailing trash */
+/*
+=head1 Numeric functions
+
+=for apidoc AmdR|bool|GROK_NUMERIC_RADIX|NN const char **sp|NN const char *send
+
+A synonym for L</grok_numeric_radix>
+
+=cut
+*/
#define GROK_NUMERIC_RADIX(sp, send) grok_numeric_radix(sp, send)
/* Input flags: */
#define PERL_SIGNALS_UNSAFE_FLAG 0x0001
-/* Use instead of abs() since abs() forces its argument to be an int,
- * but also beware since this evaluates its argument twice, so no x++. */
+/*
+=head1 Numeric functions
+
+=for apidoc Am|int|PERL_ABS|int
+
+Typeless C<abs> or C<fabs>, I<etc>. (The usage below indicates it is for
+integers, but it works for any type.) Use instead of these, since the C
+library ones force their argument to be what it is expecting, potentially
+leading to disaster. But also beware that this evaluates its argument twice,
+so no C<x++>.
+
+=cut
+*/
+
#define PERL_ABS(x) ((x) < 0 ? -(x) : (x))
#if defined(__DECC) && defined(__osf__)
# define do_aexec(really, mark,sp) do_aexec5(really, mark, sp, 0, 0)
#endif
-/* check embedded \0 characters in pathnames passed to syscalls,
- but allow one ending \0 */
-#define IS_SAFE_SYSCALL(p, len, what, op_name) (S_is_safe_syscall(aTHX_ (p), (len), (what), (op_name)))
+
+/*
+=head1 Miscellaneous Functions
+
+=for apidoc Am|bool|IS_SAFE_SYSCALL|NN const char *pv|STRLEN len|NN const char *what|NN const char *op_name
+
+Same as L</is_safe_syscall>.
+
+=cut
+
+Allows one ending \0
+*/
+#define IS_SAFE_SYSCALL(p, len, what, op_name) (Perl_is_safe_syscall(aTHX_ (p), (len), (what), (op_name)))
#define IS_SAFE_PATHNAME(p, len, op_name) IS_SAFE_SYSCALL((p), (len), "pathname", (op_name))
*/
/* The quadmath literals are anon structs which -Wc++-compat doesn't like. */
+GCC_DIAG_IGNORE_DECL(-Wpragmas);
GCC_DIAG_IGNORE_DECL(-Wc++-compat);
# ifdef USE_QUADMATH
# endif
GCC_DIAG_RESTORE_DECL;
+GCC_DIAG_RESTORE_DECL;
#else
https://perl5.git.perl.org / perl5.git / blobdiff