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/* Test integer width macros.
Copyright (C) 2016-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <limits.h>
#include <stdio.h>
#define CHECK_WIDTH(TYPE, MAX, WIDTH) \
do \
{ \
if ((MAX >> ((TYPE) -1 < 0 ? (WIDTH - 2) : (WIDTH - 1))) != 1) \
{ \
puts ("bad width of " #TYPE); \
result = 1; \
} \
else \
puts ("width of " #TYPE " OK"); \
} \
while (0)
static int
do_test (void)
{
int result = 0;
#ifndef CHAR_WIDTH
# error "missing CHAR_WIDTH"
#endif
CHECK_WIDTH (char, CHAR_MAX, CHAR_WIDTH);
#ifndef SCHAR_WIDTH
# error "missing SCHAR_WIDTH"
#endif
CHECK_WIDTH (signed char, SCHAR_MAX, SCHAR_WIDTH);
#ifndef UCHAR_WIDTH
# error "missing UCHAR_WIDTH"
#endif
CHECK_WIDTH (unsigned char, UCHAR_MAX, UCHAR_WIDTH);
#ifndef SHRT_WIDTH
# error "missing SHRT_WIDTH"
#endif
CHECK_WIDTH (signed short, SHRT_MAX, SHRT_WIDTH);
#ifndef USHRT_WIDTH
# error "missing USHRT_WIDTH"
#endif
CHECK_WIDTH (unsigned short, USHRT_MAX, USHRT_WIDTH);
#ifndef INT_WIDTH
# error "missing INT_WIDTH"
#endif
CHECK_WIDTH (signed int, INT_MAX, INT_WIDTH);
#ifndef UINT_WIDTH
# error "missing UINT_WIDTH"
#endif
CHECK_WIDTH (unsigned int, UINT_MAX, UINT_WIDTH);
#ifndef LONG_WIDTH
# error "missing LONG_WIDTH"
#endif
CHECK_WIDTH (signed long, LONG_MAX, LONG_WIDTH);
#ifndef ULONG_WIDTH
# error "missing ULONG_WIDTH"
#endif
CHECK_WIDTH (unsigned long, ULONG_MAX, ULONG_WIDTH);
#ifndef LLONG_WIDTH
# error "missing LLONG_WIDTH"
#endif
CHECK_WIDTH (signed long long, LLONG_MAX, LLONG_WIDTH);
#ifndef ULLONG_WIDTH
# error "missing ULLONG_WIDTH"
#endif
CHECK_WIDTH (unsigned long long, ULLONG_MAX, ULLONG_WIDTH);
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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