glibc/sysdeps/ieee754/dbl-64/s_fsub.c

35 lines
1.2 KiB
C

/* Subtract double values, narrowing the result to float.
Copyright (C) 2018-2023 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/>. */
#define f32subf64 __hide_f32subf64
#define f32subf32x __hide_f32subf32x
#define fsubl __hide_fsubl
#include <math.h>
#undef f32subf64
#undef f32subf32x
#undef fsubl
#include <math-narrow.h>
float
__fsub (double x, double y)
{
NARROW_SUB_ROUND_TO_ODD (x, y, float, union ieee754_double, , mantissa1);
}
libm_alias_float_double (sub)