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5b17fd0da6
TS 18661-1 defines macros for the width of integer types, intended for use with the fromfp functions to convert from floating-point types to integer types of any width, in any rounding mode and with control over whether "inexact" is raised. Such macros are, of course, more generally useful than just with those functions. Those macros are added to <limits.h> and <stdint.h>. Having previously added the <limits.h> macros, this patch adds the <stdint.h> ones. I've also added these macros to GCC's headers for GCC 7, but for glibc systems, the definitions in GCC's <stdint.h> will only be used with -ffreestanding. Tested for x86_64 and x86. * sysdeps/generic/stdint.h: Define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION and include <bits/libc-header-start.h> instead of including <features.h>. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT8_WIDTH): New macro. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT8_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT16_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT16_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT32_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT32_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT64_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT64_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST8_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST8_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST16_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST16_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST32_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST32_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST64_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST64_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST8_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST8_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST16_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST16_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST32_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST32_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST64_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST64_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INTPTR_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINTPTR_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INTMAX_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINTMAX_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (PTRDIFF_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (SIG_ATOMIC_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (SIZE_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (WCHAR_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (WINT_WIDTH): Likewise. * manual/arith.texi (Integers): Document these macros for types specified by width properties. * manual/lang.texi (Width of Type): Document these macros for other standard typedefs. * stdlib/tst-width-stdint.c: New file. * stdlib/Makefile (tests): Add tst-width-stdint.
355 lines
9.0 KiB
C
355 lines
9.0 KiB
C
/* Copyright (C) 1997-2016 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/*
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* ISO C99: 7.18 Integer types <stdint.h>
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*/
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#ifndef _STDINT_H
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#define _STDINT_H 1
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#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
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#include <bits/libc-header-start.h>
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#include <bits/wchar.h>
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#include <bits/wordsize.h>
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/* Exact integral types. */
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/* Signed. */
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/* There is some amount of overlap with <sys/types.h> as known by inet code */
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#ifndef __int8_t_defined
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# define __int8_t_defined
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typedef signed char int8_t;
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typedef short int int16_t;
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typedef int int32_t;
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# if __WORDSIZE == 64
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typedef long int int64_t;
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# else
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__extension__
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typedef long long int int64_t;
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# endif
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#endif
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/* Unsigned. */
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typedef unsigned char uint8_t;
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typedef unsigned short int uint16_t;
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#ifndef __uint32_t_defined
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typedef unsigned int uint32_t;
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# define __uint32_t_defined
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#endif
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#if __WORDSIZE == 64
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typedef unsigned long int uint64_t;
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#else
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__extension__
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typedef unsigned long long int uint64_t;
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#endif
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/* Small types. */
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/* Signed. */
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typedef signed char int_least8_t;
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typedef short int int_least16_t;
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typedef int int_least32_t;
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#if __WORDSIZE == 64
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typedef long int int_least64_t;
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#else
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__extension__
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typedef long long int int_least64_t;
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#endif
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/* Unsigned. */
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typedef unsigned char uint_least8_t;
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typedef unsigned short int uint_least16_t;
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typedef unsigned int uint_least32_t;
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#if __WORDSIZE == 64
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typedef unsigned long int uint_least64_t;
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#else
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__extension__
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typedef unsigned long long int uint_least64_t;
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#endif
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/* Fast types. */
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/* Signed. */
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typedef signed char int_fast8_t;
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#if __WORDSIZE == 64
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typedef long int int_fast16_t;
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typedef long int int_fast32_t;
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typedef long int int_fast64_t;
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#else
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typedef int int_fast16_t;
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typedef int int_fast32_t;
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__extension__
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typedef long long int int_fast64_t;
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#endif
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/* Unsigned. */
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typedef unsigned char uint_fast8_t;
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#if __WORDSIZE == 64
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typedef unsigned long int uint_fast16_t;
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typedef unsigned long int uint_fast32_t;
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typedef unsigned long int uint_fast64_t;
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#else
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typedef unsigned int uint_fast16_t;
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typedef unsigned int uint_fast32_t;
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__extension__
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typedef unsigned long long int uint_fast64_t;
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#endif
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/* Types for `void *' pointers. */
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#if __WORDSIZE == 64
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# ifndef __intptr_t_defined
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typedef long int intptr_t;
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# define __intptr_t_defined
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# endif
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typedef unsigned long int uintptr_t;
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#else
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# ifndef __intptr_t_defined
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typedef int intptr_t;
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# define __intptr_t_defined
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# endif
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typedef unsigned int uintptr_t;
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#endif
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/* Largest integral types. */
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#if __WORDSIZE == 64
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typedef long int intmax_t;
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typedef unsigned long int uintmax_t;
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#else
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__extension__
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typedef long long int intmax_t;
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__extension__
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typedef unsigned long long int uintmax_t;
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#endif
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# if __WORDSIZE == 64
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# define __INT64_C(c) c ## L
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# define __UINT64_C(c) c ## UL
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# else
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# define __INT64_C(c) c ## LL
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# define __UINT64_C(c) c ## ULL
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# endif
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/* Limits of integral types. */
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/* Minimum of signed integral types. */
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# define INT8_MIN (-128)
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# define INT16_MIN (-32767-1)
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# define INT32_MIN (-2147483647-1)
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# define INT64_MIN (-__INT64_C(9223372036854775807)-1)
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/* Maximum of signed integral types. */
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# define INT8_MAX (127)
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# define INT16_MAX (32767)
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# define INT32_MAX (2147483647)
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# define INT64_MAX (__INT64_C(9223372036854775807))
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/* Maximum of unsigned integral types. */
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# define UINT8_MAX (255)
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# define UINT16_MAX (65535)
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# define UINT32_MAX (4294967295U)
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# define UINT64_MAX (__UINT64_C(18446744073709551615))
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/* Minimum of signed integral types having a minimum size. */
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# define INT_LEAST8_MIN (-128)
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# define INT_LEAST16_MIN (-32767-1)
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# define INT_LEAST32_MIN (-2147483647-1)
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# define INT_LEAST64_MIN (-__INT64_C(9223372036854775807)-1)
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/* Maximum of signed integral types having a minimum size. */
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# define INT_LEAST8_MAX (127)
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# define INT_LEAST16_MAX (32767)
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# define INT_LEAST32_MAX (2147483647)
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# define INT_LEAST64_MAX (__INT64_C(9223372036854775807))
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/* Maximum of unsigned integral types having a minimum size. */
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# define UINT_LEAST8_MAX (255)
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# define UINT_LEAST16_MAX (65535)
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# define UINT_LEAST32_MAX (4294967295U)
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# define UINT_LEAST64_MAX (__UINT64_C(18446744073709551615))
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/* Minimum of fast signed integral types having a minimum size. */
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# define INT_FAST8_MIN (-128)
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# if __WORDSIZE == 64
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# define INT_FAST16_MIN (-9223372036854775807L-1)
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# define INT_FAST32_MIN (-9223372036854775807L-1)
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# else
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# define INT_FAST16_MIN (-2147483647-1)
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# define INT_FAST32_MIN (-2147483647-1)
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# endif
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# define INT_FAST64_MIN (-__INT64_C(9223372036854775807)-1)
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/* Maximum of fast signed integral types having a minimum size. */
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# define INT_FAST8_MAX (127)
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# if __WORDSIZE == 64
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# define INT_FAST16_MAX (9223372036854775807L)
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# define INT_FAST32_MAX (9223372036854775807L)
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# else
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# define INT_FAST16_MAX (2147483647)
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# define INT_FAST32_MAX (2147483647)
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# endif
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# define INT_FAST64_MAX (__INT64_C(9223372036854775807))
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/* Maximum of fast unsigned integral types having a minimum size. */
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# define UINT_FAST8_MAX (255)
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# if __WORDSIZE == 64
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# define UINT_FAST16_MAX (18446744073709551615UL)
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# define UINT_FAST32_MAX (18446744073709551615UL)
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# else
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# define UINT_FAST16_MAX (4294967295U)
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# define UINT_FAST32_MAX (4294967295U)
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# endif
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# define UINT_FAST64_MAX (__UINT64_C(18446744073709551615))
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/* Values to test for integral types holding `void *' pointer. */
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# if __WORDSIZE == 64
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# define INTPTR_MIN (-9223372036854775807L-1)
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# define INTPTR_MAX (9223372036854775807L)
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# define UINTPTR_MAX (18446744073709551615UL)
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# else
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# define INTPTR_MIN (-2147483647-1)
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# define INTPTR_MAX (2147483647)
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# define UINTPTR_MAX (4294967295U)
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# endif
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/* Minimum for largest signed integral type. */
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# define INTMAX_MIN (-__INT64_C(9223372036854775807)-1)
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/* Maximum for largest signed integral type. */
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# define INTMAX_MAX (__INT64_C(9223372036854775807))
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/* Maximum for largest unsigned integral type. */
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# define UINTMAX_MAX (__UINT64_C(18446744073709551615))
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/* Limits of other integer types. */
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/* Limits of `ptrdiff_t' type. */
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# if __WORDSIZE == 64
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# define PTRDIFF_MIN (-9223372036854775807L-1)
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# define PTRDIFF_MAX (9223372036854775807L)
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# else
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# define PTRDIFF_MIN (-2147483647-1)
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# define PTRDIFF_MAX (2147483647)
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# endif
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/* Limits of `sig_atomic_t'. */
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# define SIG_ATOMIC_MIN (-2147483647-1)
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# define SIG_ATOMIC_MAX (2147483647)
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/* Limit of `size_t' type. */
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# if __WORDSIZE == 64
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# define SIZE_MAX (18446744073709551615UL)
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# else
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# ifdef __WORDSIZE32_SIZE_ULONG
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# define SIZE_MAX (4294967295UL)
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# else
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# define SIZE_MAX (4294967295U)
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# endif
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# endif
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/* Limits of `wchar_t'. */
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# ifndef WCHAR_MIN
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/* These constants might also be defined in <wchar.h>. */
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# define WCHAR_MIN __WCHAR_MIN
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# define WCHAR_MAX __WCHAR_MAX
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# endif
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/* Limits of `wint_t'. */
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# define WINT_MIN (0u)
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# define WINT_MAX (4294967295u)
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/* Signed. */
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# define INT8_C(c) c
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# define INT16_C(c) c
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# define INT32_C(c) c
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# if __WORDSIZE == 64
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# define INT64_C(c) c ## L
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# else
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# define INT64_C(c) c ## LL
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# endif
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/* Unsigned. */
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# define UINT8_C(c) c
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# define UINT16_C(c) c
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# define UINT32_C(c) c ## U
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# if __WORDSIZE == 64
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# define UINT64_C(c) c ## UL
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# else
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# define UINT64_C(c) c ## ULL
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# endif
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/* Maximal type. */
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# if __WORDSIZE == 64
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# define INTMAX_C(c) c ## L
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# define UINTMAX_C(c) c ## UL
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# else
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# define INTMAX_C(c) c ## LL
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# define UINTMAX_C(c) c ## ULL
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# endif
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#if __GLIBC_USE (IEC_60559_BFP_EXT)
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# define INT8_WIDTH 8
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# define UINT8_WIDTH 8
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# define INT16_WIDTH 16
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# define UINT16_WIDTH 16
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# define INT32_WIDTH 32
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# define UINT32_WIDTH 32
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# define INT64_WIDTH 64
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# define UINT64_WIDTH 64
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# define INT_LEAST8_WIDTH 8
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# define UINT_LEAST8_WIDTH 8
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# define INT_LEAST16_WIDTH 16
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# define UINT_LEAST16_WIDTH 16
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# define INT_LEAST32_WIDTH 32
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# define UINT_LEAST32_WIDTH 32
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# define INT_LEAST64_WIDTH 64
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# define UINT_LEAST64_WIDTH 64
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# define INT_FAST8_WIDTH 8
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# define UINT_FAST8_WIDTH 8
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# define INT_FAST16_WIDTH __WORDSIZE
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# define UINT_FAST16_WIDTH __WORDSIZE
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# define INT_FAST32_WIDTH __WORDSIZE
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# define UINT_FAST32_WIDTH __WORDSIZE
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# define INT_FAST64_WIDTH 64
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# define UINT_FAST64_WIDTH 64
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# define INTPTR_WIDTH __WORDSIZE
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# define UINTPTR_WIDTH __WORDSIZE
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# define INTMAX_WIDTH 64
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# define UINTMAX_WIDTH 64
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# define PTRDIFF_WIDTH __WORDSIZE
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# define SIG_ATOMIC_WIDTH 32
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# define SIZE_WIDTH __WORDSIZE
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# define WCHAR_WIDTH 32
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# define WINT_WIDTH 32
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#endif
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#endif /* stdint.h */
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