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Add <stdint.h> integer width macros.
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.
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ChangeLog
45
ChangeLog
@ -1,3 +1,48 @@
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2016-09-21 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/generic/stdint.h: Define
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__GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION and include
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<bits/libc-header-start.h> instead of including <features.h>.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT8_WIDTH): New macro.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT8_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT16_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT16_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT32_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT32_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT64_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT64_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST8_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST8_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST16_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST16_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST32_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST32_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_LEAST64_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_LEAST64_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST8_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST8_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST16_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST16_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST32_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST32_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_FAST64_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_FAST64_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INTPTR_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINTPTR_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (INTMAX_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (UINTMAX_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (PTRDIFF_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (SIG_ATOMIC_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (SIZE_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (WCHAR_WIDTH): Likewise.
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[__GLIBC_USE (IEC_60559_BFP_EXT)] (WINT_WIDTH): Likewise.
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* manual/arith.texi (Integers): Document these macros for types
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specified by width properties.
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* manual/lang.texi (Width of Type): Document these macros for
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other standard typedefs.
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* stdlib/tst-width-stdint.c: New file.
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* stdlib/Makefile (tests): Add tst-width-stdint.
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2016-09-21 Florian Weimer <fweimer@redhat.com>
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[BZ #20016]
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11
NEWS
11
NEWS
@ -38,7 +38,16 @@ Version 2.25
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* Integer width macros from TS 18661-1:2014 are added to <limits.h>:
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CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
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UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH.
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UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
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<stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
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INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
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UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
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INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
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UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
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UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
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UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
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UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
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WINT_WIDTH.
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* The <sys/quota.h> header now includes the <linux/quota.h> header. Support
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for the Linux quota interface which predates kernel version 2.4.22 has
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@ -110,7 +110,9 @@ minimum possible values for each integer data type. The macro names
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follow these examples: @code{INT32_MAX}, @code{UINT8_MAX},
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@code{INT_FAST32_MIN}, @code{INT_LEAST64_MIN}, @code{UINTMAX_MAX},
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@code{INTMAX_MAX}, @code{INTMAX_MIN}. Note that there are no macros for
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unsigned integer minima. These are always zero.
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unsigned integer minima. These are always zero. Similiarly, there
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are macros such as @code{INTMAX_WIDTH} for the width of these types.
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Those macros for integer type widths come from TS 18661-1:2014.
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@cindex maximum possible integer
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@cindex minimum possible integer
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@ -703,6 +703,38 @@ int}, @code{long long int} and @code{unsigned long long int},
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respectively.
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@end table
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Further such macros are defined in @file{stdint.h}. Apart from those
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for types specified by width (@pxref{Integers}), the following are
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defined.
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@table @code
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@comment stdint.h
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@comment ISO
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@item INTPTR_WIDTH
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@comment stdint.h
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@comment ISO
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@itemx UINTPTR_WIDTH
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@comment stdint.h
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@comment ISO
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@itemx PTRDIFF_WIDTH
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@comment stdint.h
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@comment ISO
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@itemx SIG_ATOMIC_WIDTH
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@comment stdint.h
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@comment ISO
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@itemx SIZE_WIDTH
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@comment stdint.h
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@comment ISO
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@itemx WCHAR_WIDTH
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@comment stdint.h
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@comment ISO
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@itemx WINT_WIDTH
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These are the widths of the types @code{intptr_t}, @code{uintptr_t},
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@code{ptrdiff_t}, @code{sig_atomic_t}, @code{size_t}, @code{wchar_t}
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and @code{wint_t}, respectively.
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@end table
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@node Range of Type
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@subsection Range of an Integer Type
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@cindex integer type range
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@ -77,7 +77,8 @@ tests := tst-strtol tst-strtod testmb testrand testsort testdiv \
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tst-tininess tst-strtod-underflow tst-tls-atexit \
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tst-setcontext3 tst-tls-atexit-nodelete \
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tst-strtol-locale tst-strtod-nan-locale tst-strfmon_l \
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tst-quick_exit tst-thread-quick_exit tst-width
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tst-quick_exit tst-thread-quick_exit tst-width \
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tst-width-stdint
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tests-static := tst-secure-getenv
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ifeq ($(have-cxx-thread_local),yes)
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CFLAGS-tst-quick_exit.o = -std=c++11
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185
stdlib/tst-width-stdint.c
Normal file
185
stdlib/tst-width-stdint.c
Normal file
@ -0,0 +1,185 @@
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/* Test integer width macros in <stdint.h>.
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Copyright (C) 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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#include <signal.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <wchar.h>
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#define CHECK_WIDTH(TYPE, MAX, WIDTH) \
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do \
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{ \
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if ((MAX >> ((TYPE) -1 < 0 ? (WIDTH - 2) : (WIDTH - 1))) != 1) \
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{ \
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puts ("bad width of " #TYPE); \
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result = 1; \
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} \
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else \
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puts ("width of " #TYPE " OK"); \
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} \
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while (0)
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static int
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do_test (void)
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{
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int result = 0;
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#ifndef INT8_WIDTH
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# error "missing INT8_WIDTH"
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#endif
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CHECK_WIDTH (int8_t, INT8_MAX, INT8_WIDTH);
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#ifndef INT16_WIDTH
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# error "missing INT16_WIDTH"
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#endif
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CHECK_WIDTH (int16_t, INT16_MAX, INT16_WIDTH);
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#ifndef INT32_WIDTH
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# error "missing INT32_WIDTH"
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#endif
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CHECK_WIDTH (int32_t, INT32_MAX, INT32_WIDTH);
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#ifndef INT64_WIDTH
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# error "missing INT64_WIDTH"
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#endif
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CHECK_WIDTH (int64_t, INT64_MAX, INT64_WIDTH);
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#ifndef UINT8_WIDTH
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# error "missing UINT8_WIDTH"
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#endif
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CHECK_WIDTH (uint8_t, UINT8_MAX, UINT8_WIDTH);
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#ifndef UINT16_WIDTH
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# error "missing UINT16_WIDTH"
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#endif
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CHECK_WIDTH (uint16_t, UINT16_MAX, UINT16_WIDTH);
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#ifndef UINT32_WIDTH
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# error "missing UINT32_WIDTH"
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#endif
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CHECK_WIDTH (uint32_t, UINT32_MAX, UINT32_WIDTH);
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#ifndef UINT64_WIDTH
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# error "missing UINT64_WIDTH"
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#endif
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CHECK_WIDTH (uint64_t, UINT64_MAX, UINT64_WIDTH);
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#ifndef INT_LEAST8_WIDTH
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# error "missing INT_LEAST8_WIDTH"
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#endif
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CHECK_WIDTH (int_least8_t, INT_LEAST8_MAX, INT_LEAST8_WIDTH);
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#ifndef INT_LEAST16_WIDTH
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# error "missing INT_LEAST16_WIDTH"
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#endif
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CHECK_WIDTH (int_least16_t, INT_LEAST16_MAX, INT_LEAST16_WIDTH);
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#ifndef INT_LEAST32_WIDTH
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# error "missing INT_LEAST32_WIDTH"
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#endif
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CHECK_WIDTH (int_least32_t, INT_LEAST32_MAX, INT_LEAST32_WIDTH);
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#ifndef INT_LEAST64_WIDTH
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# error "missing INT_LEAST64_WIDTH"
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#endif
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CHECK_WIDTH (int_least64_t, INT_LEAST64_MAX, INT_LEAST64_WIDTH);
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#ifndef UINT_LEAST8_WIDTH
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# error "missing UINT_LEAST8_WIDTH"
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#endif
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CHECK_WIDTH (uint_least8_t, UINT_LEAST8_MAX, UINT_LEAST8_WIDTH);
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#ifndef UINT_LEAST16_WIDTH
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# error "missing UINT_LEAST16_WIDTH"
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#endif
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CHECK_WIDTH (uint_least16_t, UINT_LEAST16_MAX, UINT_LEAST16_WIDTH);
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#ifndef UINT_LEAST32_WIDTH
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# error "missing UINT_LEAST32_WIDTH"
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#endif
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CHECK_WIDTH (uint_least32_t, UINT_LEAST32_MAX, UINT_LEAST32_WIDTH);
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#ifndef UINT_LEAST64_WIDTH
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# error "missing UINT_LEAST64_WIDTH"
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#endif
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CHECK_WIDTH (uint_least64_t, UINT_LEAST64_MAX, UINT_LEAST64_WIDTH);
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#ifndef INT_FAST8_WIDTH
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# error "missing INT_FAST8_WIDTH"
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#endif
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CHECK_WIDTH (int_fast8_t, INT_FAST8_MAX, INT_FAST8_WIDTH);
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#ifndef INT_FAST16_WIDTH
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# error "missing INT_FAST16_WIDTH"
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#endif
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CHECK_WIDTH (int_fast16_t, INT_FAST16_MAX, INT_FAST16_WIDTH);
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#ifndef INT_FAST32_WIDTH
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# error "missing INT_FAST32_WIDTH"
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#endif
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CHECK_WIDTH (int_fast32_t, INT_FAST32_MAX, INT_FAST32_WIDTH);
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#ifndef INT_FAST64_WIDTH
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# error "missing INT_FAST64_WIDTH"
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#endif
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CHECK_WIDTH (int_fast64_t, INT_FAST64_MAX, INT_FAST64_WIDTH);
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#ifndef UINT_FAST8_WIDTH
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# error "missing UINT_FAST8_WIDTH"
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#endif
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CHECK_WIDTH (uint_fast8_t, UINT_FAST8_MAX, UINT_FAST8_WIDTH);
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#ifndef UINT_FAST16_WIDTH
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# error "missing UINT_FAST16_WIDTH"
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#endif
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CHECK_WIDTH (uint_fast16_t, UINT_FAST16_MAX, UINT_FAST16_WIDTH);
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#ifndef UINT_FAST32_WIDTH
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# error "missing UINT_FAST32_WIDTH"
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#endif
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CHECK_WIDTH (uint_fast32_t, UINT_FAST32_MAX, UINT_FAST32_WIDTH);
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#ifndef UINT_FAST64_WIDTH
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# error "missing UINT_FAST64_WIDTH"
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#endif
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CHECK_WIDTH (uint_fast64_t, UINT_FAST64_MAX, UINT_FAST64_WIDTH);
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#ifndef INTPTR_WIDTH
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# error "missing INTPTR_WIDTH"
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#endif
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CHECK_WIDTH (intptr_t, INTPTR_MAX, INTPTR_WIDTH);
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#ifndef UINTPTR_WIDTH
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# error "missing UINTPTR_WIDTH"
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#endif
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CHECK_WIDTH (uintptr_t, UINTPTR_MAX, UINTPTR_WIDTH);
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#ifndef INTMAX_WIDTH
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# error "missing INTMAX_WIDTH"
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#endif
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CHECK_WIDTH (intmax_t, INTMAX_MAX, INTMAX_WIDTH);
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#ifndef UINTMAX_WIDTH
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# error "missing UINTMAX_WIDTH"
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#endif
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CHECK_WIDTH (uintmax_t, UINTMAX_MAX, UINTMAX_WIDTH);
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#ifndef PTRDIFF_WIDTH
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# error "missing PTRDIFF_WIDTH"
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#endif
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CHECK_WIDTH (ptrdiff_t, PTRDIFF_MAX, PTRDIFF_WIDTH);
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#ifndef SIG_ATOMIC_WIDTH
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# error "missing SIG_ATOMIC_WIDTH"
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#endif
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CHECK_WIDTH (sig_atomic_t, SIG_ATOMIC_MAX, SIG_ATOMIC_WIDTH);
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#ifndef SIZE_WIDTH
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# error "missing SIZE_WIDTH"
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#endif
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CHECK_WIDTH (size_t, SIZE_MAX, SIZE_WIDTH);
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#ifndef WCHAR_WIDTH
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# error "missing WCHAR_WIDTH"
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#endif
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CHECK_WIDTH (wchar_t, WCHAR_MAX, WCHAR_WIDTH);
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#ifndef WINT_WIDTH
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# error "missing WINT_WIDTH"
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#endif
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CHECK_WIDTH (wint_t, WINT_MAX, WINT_WIDTH);
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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#ifndef _STDINT_H
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#define _STDINT_H 1
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#include <features.h>
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#define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
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||||
#include <bits/libc-header-start.h>
|
||||
#include <bits/wchar.h>
|
||||
#include <bits/wordsize.h>
|
||||
|
||||
@ -307,4 +308,47 @@ typedef unsigned long long int uintmax_t;
|
||||
# define UINTMAX_C(c) c ## ULL
|
||||
# endif
|
||||
|
||||
#if __GLIBC_USE (IEC_60559_BFP_EXT)
|
||||
|
||||
# define INT8_WIDTH 8
|
||||
# define UINT8_WIDTH 8
|
||||
# define INT16_WIDTH 16
|
||||
# define UINT16_WIDTH 16
|
||||
# define INT32_WIDTH 32
|
||||
# define UINT32_WIDTH 32
|
||||
# define INT64_WIDTH 64
|
||||
# define UINT64_WIDTH 64
|
||||
|
||||
# define INT_LEAST8_WIDTH 8
|
||||
# define UINT_LEAST8_WIDTH 8
|
||||
# define INT_LEAST16_WIDTH 16
|
||||
# define UINT_LEAST16_WIDTH 16
|
||||
# define INT_LEAST32_WIDTH 32
|
||||
# define UINT_LEAST32_WIDTH 32
|
||||
# define INT_LEAST64_WIDTH 64
|
||||
# define UINT_LEAST64_WIDTH 64
|
||||
|
||||
# define INT_FAST8_WIDTH 8
|
||||
# define UINT_FAST8_WIDTH 8
|
||||
# define INT_FAST16_WIDTH __WORDSIZE
|
||||
# define UINT_FAST16_WIDTH __WORDSIZE
|
||||
# define INT_FAST32_WIDTH __WORDSIZE
|
||||
# define UINT_FAST32_WIDTH __WORDSIZE
|
||||
# define INT_FAST64_WIDTH 64
|
||||
# define UINT_FAST64_WIDTH 64
|
||||
|
||||
# define INTPTR_WIDTH __WORDSIZE
|
||||
# define UINTPTR_WIDTH __WORDSIZE
|
||||
|
||||
# define INTMAX_WIDTH 64
|
||||
# define UINTMAX_WIDTH 64
|
||||
|
||||
# define PTRDIFF_WIDTH __WORDSIZE
|
||||
# define SIG_ATOMIC_WIDTH 32
|
||||
# define SIZE_WIDTH __WORDSIZE
|
||||
# define WCHAR_WIDTH 32
|
||||
# define WINT_WIDTH 32
|
||||
|
||||
#endif
|
||||
|
||||
#endif /* stdint.h */
|
||||
|
Loading…
Reference in New Issue
Block a user