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e518937a3a
1999-02-07 Ulrich Drepper <drepper@cygnus.com> * Versions.def: New version GLIBC_2.1.1 for libc. * stdlib/Versions: Add _Exit, imaxdiv, and imaxdiv to GLIBC_2.1.1. * stdlib/labs.c: Moved to... * sysdeps/generic/labs.c: ...here. * stdlib/llabs.c: Moved to... * sysdeps/generic/llabs.c: ...here. * stdlib/stdlib.h: Allow definition of ldiv_t and lldiv_t in other header. Declare _Exit. * sysdeps/generic/_exit.c: Add alias _Exit. * sysdeps/mach/hurd/_exit.c: Likewise. * sysdeps/standalone/i386/force_cpu386/_exit.c: Likewise. * sysdeps/standalone/i960/nindy960/_exit.c: Likewise. * sysdeps/standalone/m68k/m68020/mvme136/_exit.c: Likewise. * sysdeps/unix/_exit.c: Likewise. * sysdeps/wordsize-32/inttypes.h: Define imaxdiv_t and declare imaxdiv and imaxabs. Declare lldiv_t if necessary. * sysdeps/wordsize-64/inttypes.h: Likewise. * sysdeps/wordsize-32/llabs.c: New file. * sysdeps/wordsize-32/lldiv.c: New file. * sysdeps/wordsize-64/labs.c: New file. * sysdeps/wordsize-64/ldiv.c: New file. * manual/arith.texi: Document imaxabs, imaxdiv_t, and imaxdiv. * manual/startup.texi: Document _Exit. 1999-02-07 Andreas Jaeger <aj@arthur.rhein-neckar.de> * nscd/cache.c: Include <arpa/inet.h> for inet_ntop.
774 lines
27 KiB
C
774 lines
27 KiB
C
/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/*
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* ISO C Standard: 4.10 GENERAL UTILITIES <stdlib.h>
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*/
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#ifndef _STDLIB_H
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#include <features.h>
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/* Get size_t, wchar_t and NULL from <stddef.h>. */
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#define __need_size_t
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#ifndef __need_malloc_and_calloc
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# define __need_wchar_t
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# define __need_NULL
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#endif
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#include <stddef.h>
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__BEGIN_DECLS
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#ifndef __need_malloc_and_calloc
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#define _STDLIB_H 1
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/* Returned by `div'. */
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typedef struct
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{
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int quot; /* Quotient. */
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int rem; /* Remainder. */
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} div_t;
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/* Returned by `ldiv'. */
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#ifndef __ldiv_t_defined
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typedef struct
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{
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long int quot; /* Quotient. */
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long int rem; /* Remainder. */
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} ldiv_t;
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# define __ldiv_t_defined 1
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#endif
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#if defined __USE_ISOC9X && !defined __lldiv_t_defined
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/* Returned by `lldiv'. */
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__extension__ typedef struct
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{
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long long int quot; /* Quotient. */
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long long int rem; /* Remainder. */
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} lldiv_t;
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# define __lldiv_t_defined 1
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#endif
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/* The largest number rand will return (same as INT_MAX). */
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#define RAND_MAX 2147483647
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/* We define these the same for all machines.
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Changes from this to the outside world should be done in `_exit'. */
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#define EXIT_FAILURE 1 /* Failing exit status. */
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#define EXIT_SUCCESS 0 /* Successful exit status. */
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/* Maximum length of a multibyte character in the current locale. */
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#define MB_CUR_MAX (__ctype_get_mb_cur_max ())
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extern size_t __ctype_get_mb_cur_max __P ((void));
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/* Convert a string to a floating-point number. */
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extern double atof __P ((__const char *__nptr));
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/* Convert a string to an integer. */
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extern int atoi __P ((__const char *__nptr));
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/* Convert a string to a long integer. */
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extern long int atol __P ((__const char *__nptr));
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#if defined __USE_ISOC9X || (defined __GNUC__ && defined __USE_MISC)
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/* These functions will part of the standard C library in ISO C 9X. */
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__extension__ extern long long int atoll __P ((__const char *__nptr));
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#endif
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/* Convert a string to a floating-point number. */
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extern double strtod __P ((__const char *__restrict __nptr,
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char **__restrict __endptr));
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#ifdef __USE_ISOC9X
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/* Likewise for `float' and `long double' sizes of floating-point numbers. */
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extern float strtof __P ((__const char *__restrict __nptr,
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char **__restrict __endptr));
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extern __long_double_t strtold __P ((__const char *__restrict __nptr,
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char **__restrict __endptr));
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#endif
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/* Convert a string to a long integer. */
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extern long int strtol __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, int __base));
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/* Convert a string to an unsigned long integer. */
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extern unsigned long int strtoul __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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int __base));
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#if defined __GNUC__ && defined __USE_BSD
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/* Convert a string to a quadword integer. */
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__extension__
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extern long long int strtoq __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, int __base));
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/* Convert a string to an unsigned quadword integer. */
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__extension__
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extern unsigned long long int strtouq __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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int __base));
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#endif /* GCC and use BSD. */
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#if defined __USE_ISOC9X || (defined __GNUC__ && defined __USE_MISC)
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/* These functions will part of the standard C library in ISO C 9X. */
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/* Convert a string to a quadword integer. */
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__extension__
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extern long long int strtoll __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, int __base));
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/* Convert a string to an unsigned quadword integer. */
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__extension__
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extern unsigned long long int strtoull __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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int __base));
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#endif /* ISO C 9X or GCC and use MISC. */
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#ifdef __USE_GNU
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/* The concept of one static locale per category is not very well
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thought out. Many applications will need to process its data using
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information from several different locales. Another application is
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the implementation of the internationalization handling in the
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upcoming ISO C++ standard library. To support this another set of
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the functions using locale data exist which have an additional
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argument.
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Attention: all these functions are *not* standardized in any form.
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This is a proof-of-concept implementation. */
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/* Structure for reentrant locale using functions. This is an
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(almost) opaque type for the user level programs. */
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# include <xlocale.h>
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/* Special versions of the functions above which take the locale to
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use as an additional parameter. */
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extern long int __strtol_l __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, int __base,
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__locale_t __loc));
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extern unsigned long int __strtoul_l __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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int __base, __locale_t __loc));
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__extension__
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extern long long int __strtoll_l __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, int __base,
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__locale_t __loc));
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__extension__
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extern unsigned long long int __strtoull_l __P ((__const char *__restrict
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__nptr,
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char **__restrict __endptr,
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int __base,
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__locale_t __loc));
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extern double __strtod_l __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, __locale_t __loc));
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extern float __strtof_l __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, __locale_t __loc));
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extern __long_double_t __strtold_l __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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__locale_t __loc));
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#endif /* GNU */
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/* The internal entry points for `strtoX' take an extra flag argument
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saying whether or not to parse locale-dependent number grouping. */
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extern double __strtod_internal __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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int __group));
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extern float __strtof_internal __P ((__const char *__restrict __nptr,
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char **__restrict __endptr, int __group));
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extern __long_double_t __strtold_internal __P ((__const char *
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__restrict __nptr,
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char **__restrict __endptr,
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int __group));
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#ifndef __strtol_internal_defined
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extern long int __strtol_internal __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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int __base, int __group));
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# define __strtol_internal_defined 1
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#endif
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#ifndef __strtoul_internal_defined
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extern unsigned long int __strtoul_internal __P ((__const char *
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__restrict __nptr,
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char **__restrict __endptr,
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int __base, int __group));
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# define __strtoul_internal_defined 1
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#endif
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#if defined __GNUC__ || defined __USE_ISOC9X
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# ifndef __strtoll_internal_defined
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__extension__
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extern long long int __strtoll_internal __P ((__const char *__restrict __nptr,
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char **__restrict __endptr,
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int __base, int __group));
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# define __strtoll_internal_defined 1
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# endif
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# ifndef __strtoull_internal_defined
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__extension__
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extern unsigned long long int __strtoull_internal __P ((__const char *
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__restrict __nptr,
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char **
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__restrict __endptr,
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int __base,
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int __group));
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# define __strtoull_internal_defined 1
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# endif
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#endif /* GCC */
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#if defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ \
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&& defined __USE_EXTERN_INLINES
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/* Define inline functions which call the internal entry points. */
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extern __inline double
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strtod (__const char *__restrict __nptr, char **__restrict __endptr) __THROW
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{
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return __strtod_internal (__nptr, __endptr, 0);
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}
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extern __inline long int
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strtol (__const char *__restrict __nptr, char **__restrict __endptr,
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int __base) __THROW
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{
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return __strtol_internal (__nptr, __endptr, __base, 0);
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}
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extern __inline unsigned long int
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strtoul (__const char *__restrict __nptr, char **__restrict __endptr,
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int __base) __THROW
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{
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return __strtoul_internal (__nptr, __endptr, __base, 0);
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}
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# ifdef __USE_ISOC9X
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extern __inline float
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strtof (__const char *__restrict __nptr, char **__restrict __endptr) __THROW
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{
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return __strtof_internal (__nptr, __endptr, 0);
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}
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extern __inline __long_double_t
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strtold (__const char *__restrict __nptr, char **__restrict __endptr) __THROW
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{
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return __strtold_internal (__nptr, __endptr, 0);
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}
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# endif
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# ifdef __USE_BSD
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__extension__ extern __inline long long int
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strtoq (__const char *__restrict __nptr, char **__restrict __endptr,
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int __base) __THROW
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{
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return __strtoll_internal (__nptr, __endptr, __base, 0);
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}
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__extension__ extern __inline unsigned long long int
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strtouq (__const char *__restrict __nptr, char **__restrict __endptr,
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int __base) __THROW
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{
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return __strtoull_internal (__nptr, __endptr, __base, 0);
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}
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# endif
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# if defined __USE_MISC || defined __USE_ISOC9X
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__extension__ extern __inline long long int
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strtoll (__const char *__restrict __nptr, char **__restrict __endptr,
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int __base) __THROW
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{
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return __strtoll_internal (__nptr, __endptr, __base, 0);
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}
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__extension__ extern __inline unsigned long long int
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strtoull (__const char * __restrict __nptr, char **__restrict __endptr,
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int __base) __THROW
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{
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return __strtoull_internal (__nptr, __endptr, __base, 0);
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}
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# endif
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extern __inline double
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atof (__const char *__nptr) __THROW
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{
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return strtod (__nptr, (char **) NULL);
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}
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extern __inline int
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atoi (__const char *__nptr) __THROW
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{
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return (int) strtol (__nptr, (char **) NULL, 10);
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}
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extern __inline long int
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atol (__const char *__nptr) __THROW
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{
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return strtol (__nptr, (char **) NULL, 10);
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}
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# if defined __USE_MISC || defined __USE_ISOC9X
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__extension__ extern __inline long long int
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atoll (__const char *__nptr) __THROW
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{
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return strtoll (__nptr, (char **) NULL, 10);
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}
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# endif
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#endif /* Optimizing and Inlining. */
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#if defined __USE_SVID || defined __USE_XOPEN_EXTENDED
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/* Convert N to base 64 using the digits "./0-9A-Za-z", least-significant
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digit first. Returns a pointer to static storage overwritten by the
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next call. */
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extern char *l64a __P ((long int __n));
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/* Read a number from a string S in base 64 as above. */
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extern long int a64l __P ((__const char *__s));
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# include <sys/types.h> /* we need int32_t... */
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/* These are the functions that actually do things. The `random', `srandom',
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`initstate' and `setstate' functions are those from BSD Unices.
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The `rand' and `srand' functions are required by the ANSI standard.
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We provide both interfaces to the same random number generator. */
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/* Return a random long integer between 0 and RAND_MAX inclusive. */
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extern int32_t random __P ((void));
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/* Seed the random number generator with the given number. */
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extern void srandom __P ((unsigned int __seed));
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/* Initialize the random number generator to use state buffer STATEBUF,
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of length STATELEN, and seed it with SEED. Optimal lengths are 8, 16,
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32, 64, 128 and 256, the bigger the better; values less than 8 will
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cause an error and values greater than 256 will be rounded down. */
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extern __ptr_t initstate __P ((unsigned int __seed, __ptr_t __statebuf,
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size_t __statelen));
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/* Switch the random number generator to state buffer STATEBUF,
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which should have been previously initialized by `initstate'. */
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extern __ptr_t setstate __P ((__ptr_t __statebuf));
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# ifdef __USE_MISC
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/* Reentrant versions of the `random' family of functions.
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These functions all use the following data structure to contain
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state, rather than global state variables. */
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struct random_data
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{
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int32_t *fptr; /* Front pointer. */
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int32_t *rptr; /* Rear pointer. */
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int32_t *state; /* Array of state values. */
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int rand_type; /* Type of random number generator. */
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int rand_deg; /* Degree of random number generator. */
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int rand_sep; /* Distance between front and rear. */
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int32_t *end_ptr; /* Pointer behind state table. */
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};
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extern int random_r __P ((struct random_data *__restrict __buf,
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int32_t *__restrict __result));
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extern int srandom_r __P ((unsigned int __seed, struct random_data *__buf));
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extern int initstate_r __P ((unsigned int __seed,
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__ptr_t __restrict __statebuf,
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size_t __statelen,
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struct random_data *__restrict __buf));
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extern int setstate_r __P ((__ptr_t __restrict __statebuf,
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struct random_data *__restrict __buf));
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# endif /* Use misc. */
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#endif /* Use SVID || extended X/Open. */
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/* Return a random integer between 0 and RAND_MAX inclusive. */
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extern int rand __P ((void));
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/* Seed the random number generator with the given number. */
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extern void srand __P ((unsigned int __seed));
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#ifdef __USE_POSIX
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/* Reentrant interface according to POSIX.1. */
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extern int rand_r __P ((unsigned int *__seed));
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#endif
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#if defined __USE_SVID || defined __USE_XOPEN
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/* System V style 48-bit random number generator functions. */
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/* Return non-negative, double-precision floating-point value in [0.0,1.0). */
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extern double drand48 __P ((void));
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extern double erand48 __P ((unsigned short int __xsubi[3]));
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/* Return non-negative, long integer in [0,2^31). */
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extern long int lrand48 __P ((void));
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extern long int nrand48 __P ((unsigned short int __xsubi[3]));
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/* Return signed, long integers in [-2^31,2^31). */
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extern long int mrand48 __P ((void));
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extern long int jrand48 __P ((unsigned short int __xsubi[3]));
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/* Seed random number generator. */
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extern void srand48 __P ((long int __seedval));
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extern unsigned short int *seed48 __P ((unsigned short int __seed16v[3]));
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extern void lcong48 __P ((unsigned short int __param[7]));
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/* Data structure for communication with thread safe versions. */
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struct drand48_data
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{
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unsigned short int x[3]; /* Current state. */
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unsigned short int a[3]; /* Factor in congruential formula. */
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unsigned short int c; /* Additive const. in congruential formula. */
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unsigned short int old_x[3]; /* Old state. */
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int init; /* Flag for initializing. */
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};
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# ifdef __USE_MISC
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/* Return non-negative, double-precision floating-point value in [0.0,1.0). */
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extern int drand48_r __P ((struct drand48_data *__restrict __buffer,
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double *__restrict __result));
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extern int erand48_r __P ((unsigned short int __xsubi[3],
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struct drand48_data *__restrict __buffer,
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double *__restrict __result));
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/* Return non-negative, long integer in [0,2^31). */
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extern int lrand48_r __P ((struct drand48_data *__restrict __buffer,
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long int *__restrict __result));
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extern int nrand48_r __P ((unsigned short int __xsubi[3],
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struct drand48_data *__restrict __buffer,
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long int *__restrict __result));
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/* Return signed, long integers in [-2^31,2^31). */
|
|
extern int mrand48_r __P ((struct drand48_data *__restrict __buffer,
|
|
long int *__restrict __result));
|
|
extern int jrand48_r __P ((unsigned short int __xsubi[3],
|
|
struct drand48_data *__restrict __buffer,
|
|
long int *__restrict __result));
|
|
|
|
/* Seed random number generator. */
|
|
extern int srand48_r __P ((long int __seedval, struct drand48_data *__buffer));
|
|
|
|
extern int seed48_r __P ((unsigned short int __seed16v[3],
|
|
struct drand48_data *__buffer));
|
|
|
|
extern int lcong48_r __P ((unsigned short int __param[7],
|
|
struct drand48_data *__buffer));
|
|
# endif /* Use misc. */
|
|
#endif /* Use SVID or X/Open. */
|
|
|
|
#endif /* don't just need malloc and calloc */
|
|
|
|
#ifndef __malloc_and_calloc_defined
|
|
#define __malloc_and_calloc_defined
|
|
/* Allocate SIZE bytes of memory. */
|
|
extern __ptr_t malloc __P ((size_t __size));
|
|
/* Allocate NMEMB elements of SIZE bytes each, all initialized to 0. */
|
|
extern __ptr_t calloc __P ((size_t __nmemb, size_t __size));
|
|
#endif
|
|
|
|
#ifndef __need_malloc_and_calloc
|
|
/* Re-allocate the previously allocated block
|
|
in __ptr_t, making the new block SIZE bytes long. */
|
|
extern __ptr_t realloc __P ((__ptr_t __ptr, size_t __size));
|
|
/* Free a block allocated by `malloc', `realloc' or `calloc'. */
|
|
extern void free __P ((__ptr_t __ptr));
|
|
|
|
#ifdef __USE_MISC
|
|
/* Free a block. An alias for `free'. (Sun Unices). */
|
|
extern void cfree __P ((__ptr_t __ptr));
|
|
#endif /* Use misc. */
|
|
|
|
#if defined __USE_GNU || defined __USE_BSD || defined __USE_MISC
|
|
# include <alloca.h>
|
|
#endif /* Use GNU, BSD, or misc. */
|
|
|
|
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
|
|
/* Allocate SIZE bytes on a page boundary. The storage cannot be freed. */
|
|
extern __ptr_t valloc __P ((size_t __size));
|
|
#endif
|
|
|
|
|
|
/* Abort execution and generate a core-dump. */
|
|
extern void abort __P ((void)) __attribute__ ((__noreturn__));
|
|
|
|
|
|
/* Register a function to be called when `exit' is called. */
|
|
extern int atexit __P ((void (*__func) (void)));
|
|
|
|
#ifdef __USE_MISC
|
|
/* Register a function to be called with the status
|
|
given to `exit' and the given argument. */
|
|
extern int __on_exit __P ((void (*__func) (int __status, __ptr_t __arg),
|
|
__ptr_t __arg));
|
|
extern int on_exit __P ((void (*__func) (int __status, __ptr_t __arg),
|
|
__ptr_t __arg));
|
|
#endif
|
|
|
|
/* Call all functions registered with `atexit' and `on_exit',
|
|
in the reverse of the order in which they were registered
|
|
perform stdio cleanup, and terminate program execution with STATUS. */
|
|
extern void exit __P ((int __status)) __attribute__ ((__noreturn__));
|
|
|
|
#ifdef __USE_ISOC9X
|
|
/* Terminate the program with STATUS without calling any of the
|
|
functions registered with `atexit' or `on_exit'. */
|
|
extern void _Exit __P ((int __status)) __attribute__ ((__noreturn__));
|
|
#endif
|
|
|
|
|
|
/* Return the value of envariable NAME, or NULL if it doesn't exist. */
|
|
extern char *getenv __P ((__const char *__name));
|
|
|
|
/* This function is similar to the above but returns NULL if the
|
|
programs is running with SUID or SGID enabled. */
|
|
extern char *__secure_getenv __P ((__const char *__name));
|
|
|
|
#if defined __USE_SVID || defined __USE_XOPEN
|
|
/* The SVID says this is in <stdio.h>, but this seems a better place. */
|
|
/* Put STRING, which is of the form "NAME=VALUE", in the environment.
|
|
If there is no `=', remove NAME from the environment. */
|
|
extern int putenv __P ((__const char *__string));
|
|
#endif
|
|
|
|
#ifdef __USE_BSD
|
|
/* Set NAME to VALUE in the environment.
|
|
If REPLACE is nonzero, overwrite an existing value. */
|
|
extern int setenv __P ((__const char *__name, __const char *__value,
|
|
int __replace));
|
|
|
|
/* Remove the variable NAME from the environment. */
|
|
extern void unsetenv __P ((__const char *__name));
|
|
#endif
|
|
|
|
#ifdef __USE_MISC
|
|
/* The `clearenv' was planned to be added to POSIX.1 but probably
|
|
never made it. Nevertheless the POSIX.9 standard (POSIX bindings
|
|
for Fortran 77) requires this function. */
|
|
extern int clearenv __P ((void));
|
|
#endif
|
|
|
|
|
|
#if defined __USE_MISC || defined __USE_XOPEN_EXTENDED
|
|
/* Generate a unique temporary file name from TEMPLATE.
|
|
The last six characters of TEMPLATE must be "XXXXXX";
|
|
they are replaced with a string that makes the file name unique.
|
|
Returns TEMPLATE, or a null pointer if it cannot get a unique file name. */
|
|
extern char *mktemp __P ((char *__template));
|
|
|
|
/* Generate a unique temporary file name from TEMPLATE.
|
|
The last six characters of TEMPLATE must be "XXXXXX";
|
|
they are replaced with a string that makes the filename unique.
|
|
Returns a file descriptor open on the file for reading and writing,
|
|
or -1 if it cannot create a uniquely-named file. */
|
|
extern int mkstemp __P ((char *__template));
|
|
#endif
|
|
|
|
|
|
/* Execute the given line as a shell command. */
|
|
extern int system __P ((__const char *__command));
|
|
|
|
|
|
#ifdef __USE_GNU
|
|
/* Return a malloc'd string containing the canonical absolute name of the
|
|
named file. The last file name component need not exist, and may be a
|
|
symlink to a nonexistent file. */
|
|
extern char *canonicalize_file_name __P ((__const char *__name));
|
|
#endif
|
|
|
|
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
|
|
/* Return the canonical absolute name of file NAME. The last file name
|
|
component need not exist, and may be a symlink to a nonexistent file.
|
|
If RESOLVED is null, the result is malloc'd; otherwise, if the canonical
|
|
name is PATH_MAX chars or more, returns null with `errno' set to
|
|
ENAMETOOLONG; if the name fits in fewer than PATH_MAX chars, returns the
|
|
name in RESOLVED. */
|
|
extern char *realpath __P ((__const char *__restrict __name,
|
|
char *__restrict __resolved));
|
|
#endif
|
|
|
|
|
|
/* Shorthand for type of comparison functions. */
|
|
#ifndef __COMPAR_FN_T
|
|
# define __COMPAR_FN_T
|
|
typedef int (*__compar_fn_t) __PMT ((__const __ptr_t, __const __ptr_t));
|
|
|
|
# ifdef __USE_GNU
|
|
typedef __compar_fn_t comparison_fn_t;
|
|
# endif
|
|
#endif
|
|
|
|
/* Do a binary search for KEY in BASE, which consists of NMEMB elements
|
|
of SIZE bytes each, using COMPAR to perform the comparisons. */
|
|
extern __ptr_t bsearch __PMT ((__const __ptr_t __key, __const __ptr_t __base,
|
|
size_t __nmemb, size_t __size,
|
|
__compar_fn_t __compar));
|
|
|
|
/* Sort NMEMB elements of BASE, of SIZE bytes each,
|
|
using COMPAR to perform the comparisons. */
|
|
extern void qsort __PMT ((__ptr_t __base, size_t __nmemb, size_t __size,
|
|
__compar_fn_t __compar));
|
|
|
|
|
|
/* Return the absolute value of X. */
|
|
extern int abs __P ((int __x)) __attribute__ ((__const__));
|
|
extern long int labs __P ((long int __x)) __attribute__ ((__const__));
|
|
#ifdef __USE_ISOC9X
|
|
__extension__ extern long long int llabs __P ((long long int __x))
|
|
__attribute__ ((__const__));
|
|
#endif
|
|
|
|
|
|
/* Return the `div_t', `ldiv_t' or `lldiv_t' representation
|
|
of the value of NUMER over DENOM. */
|
|
/* GCC may have built-ins for these someday. */
|
|
extern div_t div __P ((int __numer, int __denom)) __attribute__ ((__const__));
|
|
extern ldiv_t ldiv __P ((long int __numer, long int __denom))
|
|
__attribute__ ((__const__));
|
|
#ifdef __USE_ISOC9X
|
|
__extension__ extern lldiv_t lldiv __P ((long long int __numer,
|
|
long long int __denom))
|
|
__attribute__ ((__const__));
|
|
#endif
|
|
|
|
|
|
#if defined __USE_SVID || defined __USE_XOPEN_EXTENDED
|
|
/* Convert floating point numbers to strings. The returned values are
|
|
valid only until another call to the same function. */
|
|
|
|
/* Convert VALUE to a string with NDIGIT digits and return a pointer to
|
|
this. Set *DECPT with the position of the decimal character and *SIGN
|
|
with the sign of the number. */
|
|
extern char *ecvt __P ((double __value, int __ndigit, int *__restrict __decpt,
|
|
int *__restrict __sign));
|
|
|
|
/* Convert VALUE to a string rounded to NDIGIT decimal digits. Set *DECPT
|
|
with the position of the decimal character and *SIGN with the sign of
|
|
the number. */
|
|
extern char *fcvt __P ((double __value, int __ndigit, int *__restrict __decpt,
|
|
int *__restrict __sign));
|
|
|
|
/* If possible convert VALUE to a string with NDIGIT significant digits.
|
|
Otherwise use exponential representation. The resulting string will
|
|
be written to BUF. */
|
|
extern char *gcvt __P ((double __value, int __ndigit, char *__buf));
|
|
|
|
/* Long double versions of above functions. */
|
|
extern char *qecvt __P ((__long_double_t __value, int __ndigit,
|
|
int *__restrict __decpt, int *__restrict __sign));
|
|
extern char *qfcvt __P ((__long_double_t __value, int __ndigit,
|
|
int *__restrict __decpt, int *__restrict __sign));
|
|
extern char *qgcvt __P ((__long_double_t __value, int __ndigit, char *__buf));
|
|
|
|
|
|
# ifdef __USE_MISC
|
|
/* Reentrant version of the functions above which provide their own
|
|
buffers. */
|
|
extern int ecvt_r __P ((double __value, int __ndigit, int *__restrict __decpt,
|
|
int *__restrict __sign, char *__restrict __buf,
|
|
size_t __len));
|
|
extern int fcvt_r __P ((double __value, int __ndigit, int *__restrict __decpt,
|
|
int *__restrict __sign, char *__restrict __buf,
|
|
size_t __len));
|
|
|
|
extern int qecvt_r __P ((__long_double_t __value, int __ndigit,
|
|
int *__restrict __decpt, int *__restrict __sign,
|
|
char *__restrict __buf, size_t __len));
|
|
extern int qfcvt_r __P ((__long_double_t __value, int __ndigit,
|
|
int *__restrict __decpt, int *__restrict __sign,
|
|
char *__restrict __buf, size_t __len));
|
|
# endif /* misc */
|
|
#endif /* use MISC || use X/Open Unix */
|
|
|
|
|
|
/* Return the length of the multibyte character
|
|
in S, which is no longer than N. */
|
|
extern int mblen __P ((__const char *__s, size_t __n));
|
|
/* Return the length of the given multibyte character,
|
|
putting its `wchar_t' representation in *PWC. */
|
|
extern int mbtowc __P ((wchar_t *__restrict __pwc,
|
|
__const char *__restrict __s, size_t __n));
|
|
/* Put the multibyte character represented
|
|
by WCHAR in S, returning its length. */
|
|
extern int wctomb __P ((char *__s, wchar_t __wchar));
|
|
|
|
|
|
/* Convert a multibyte string to a wide char string. */
|
|
extern size_t mbstowcs __P ((wchar_t *__restrict __pwcs,
|
|
__const char *__restrict __s, size_t __n));
|
|
/* Convert a wide char string to multibyte string. */
|
|
extern size_t wcstombs __P ((char *__restrict __s,
|
|
__const wchar_t *__restrict __pwcs, size_t __n));
|
|
|
|
|
|
#ifdef __USE_SVID
|
|
/* Determine whether the string value of RESPONSE matches the affirmation
|
|
or negative response expression as specified by the LC_MESSAGES category
|
|
in the program's current locale. Returns 1 if affirmative, 0 if
|
|
negative, and -1 if not matching. */
|
|
extern int rpmatch __P ((__const char *__response));
|
|
#endif
|
|
|
|
|
|
#ifdef __USE_XOPEN_EXTENDED
|
|
/* Parse comma separated suboption from *OPTIONP and match against
|
|
strings in TOKENS. If found return index and set *VALUEP to
|
|
optional value introduced by an equal sign. If the suboption is
|
|
not part of TOKENS return in *VALUEP beginning of unknown
|
|
suboption. On exit *OPTIONP is set to the beginning of the next
|
|
token or at the terminating NUL character. */
|
|
extern int getsubopt __P ((char **__restrict __optionp,
|
|
__const char *__const *__restrict __tokens,
|
|
char **__restrict __valuep));
|
|
#endif
|
|
|
|
|
|
#ifdef __USE_XOPEN
|
|
|
|
/* Setup DES tables according KEY. */
|
|
extern void setkey __P ((__const char *__key));
|
|
|
|
/* X/Open pseudo terminal handling. */
|
|
|
|
/* The next four functions all take a master pseudo-tty fd and
|
|
perform an operation on the associated slave: */
|
|
|
|
/* Chown the slave to the calling user. */
|
|
extern int grantpt __P ((int __fd));
|
|
|
|
/* Release an internal lock so the slave can be opened.
|
|
Call after grantpt(). */
|
|
extern int unlockpt __P ((int __fd));
|
|
|
|
/* Return the pathname of the pseudo terminal slave assoicated with
|
|
the master FD is open on, or NULL on errors.
|
|
The returned storage is good until the next call to this function. */
|
|
extern char *ptsname __P ((int __fd));
|
|
#endif
|
|
|
|
#ifdef __USE_GNU
|
|
/* Store at most BUFLEN characters of the pathname of the slave pseudo
|
|
terminal associated with the master FD is open on in BUF.
|
|
Return 0 on success, otherwise an error number. */
|
|
extern int ptsname_r __P ((int __fd, char *__buf, size_t __buflen));
|
|
|
|
/* Open a master pseudo terminal and return its file descriptor. */
|
|
extern int getpt __P ((void));
|
|
#endif
|
|
|
|
#endif /* don't just need malloc and calloc */
|
|
#undef __need_malloc_and_calloc
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* stdlib.h */
|