glibc/sysdeps/ieee754/ldbl-128ibm-compat/ieee128-isoc99_fscanf.c
Gabriel F. T. Gomes f1a0eb5b67 ldbl-128ibm-compat: Add ISO C99 versions of scanf functions
In the format string for *scanf functions, the '%as', '%aS', and '%a[]'
modifiers behave differently depending on ISO C99 compatibility.  When
_GNU_SOURCE is defined and -std=c89 is passed to the compiler, these
functions behave like ascanf, and the modifiers allocate memory for the
output.  Otherwise, the ISO C99 compliant version of these functions is
used, and the modifiers consume a floating-point argument.  This patch
adds the IEEE binary128 variant of ISO C99 compliant functions for the
third long double format on powerpc64le.

Tested for powerpc64le.

Reviewed-by: Paul E. Murphy <murphyp@linux.ibm.com>
2019-12-13 18:02:09 -03:00

36 lines
1.2 KiB
C

/* Wrapper for __isoc99_fscanf. IEEE128 version.
Copyright (C) 2019 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 <stdarg.h>
#include <libio/libioP.h>
extern int
___ieee128_isoc99_fscanf (FILE *fp, const char *format, ...)
{
va_list arg;
int done;
int mode_flags = SCANF_ISOC99_A | SCANF_LDBL_USES_FLOAT128;
va_start (arg, format);
done = __vfscanf_internal (fp, format, arg, mode_flags);
va_end (arg);
return done;
}
strong_alias (___ieee128_isoc99_fscanf, __isoc99_fscanfieee128)