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/* Test of <stdio.h> substitute.
Copyright (C) 2007, 2009-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <stdio.h>
/* Check that the various SEEK_* macros are defined. */
int sk[] = { SEEK_CUR, SEEK_END, SEEK_SET };
/* Check that the _PRINTF_NAN_LEN_MAX macro is defined. */
int pnlm[] = { _PRINTF_NAN_LEN_MAX };
/* Check that NULL can be passed through varargs as a pointer type,
per POSIX 2008. */
static_assert (sizeof NULL == sizeof (void *));
/* Check that the types are all defined. */
fpos_t t1;
off_t t2;
size_t t3;
ssize_t t4;
va_list t5;
#include <string.h>
#include "nan.h"
#include "macros.h"
int
main (void)
{
#if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
/* Check the value of _PRINTF_NAN_LEN_MAX. */
{
#define NWORDS \
((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
typedef union { double value; unsigned int word[NWORDS]; } memory_double;
double value1;
memory_double value2;
char buf[64];
value1 = NaNd();
sprintf (buf, "%g", value1);
ASSERT (strlen (buf) <= _PRINTF_NAN_LEN_MAX);
value2.value = NaNd ();
#if DBL_EXPBIT0_BIT == 20
value2.word[DBL_EXPBIT0_WORD] ^= 0x54321;
#endif
sprintf (buf, "%g", value2.value);
ASSERT (strlen (buf) <= _PRINTF_NAN_LEN_MAX);
}
#endif
return 0;
}
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