mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-28 15:51:07 +00:00
bf79a337ec
sparc32 passes floating point values in the integer registers. VIS3 instructions gives access to the movwtos instruction to directly transfer a value from an integer register to a floating point register. Therefore it makes sense to provide a VIS3 version consisting in the generic version compiled with -mvis3. Changelog: * math/s_fdim.c: Avoid alias renamed. * math/s_fdimf.c: Likewise. * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile [$(subdir) = math && $(have-as-vis3) = yes] (libm-sysdep_routines): Add s_fdimf-vis3, s_fdim-vis3. (CFLAGS-s_fdimf-vis3.c): New. Set to -Wa,-Av9d -mvis3. (CFLAGS-s_fdim-vis3.c): Likewise. sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim-vis3.c: New file. sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.c: Likewise.
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/* Return positive difference between arguments.
|
|
Copyright (C) 1997-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
|
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
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <math.h>
|
|
#include <math_private.h>
|
|
|
|
double
|
|
__fdim (double x, double y)
|
|
{
|
|
if (islessequal (x, y))
|
|
return 0.0;
|
|
|
|
double r = math_narrow_eval (x - y);
|
|
if (isinf (r) && !isinf (x) && !isinf (y))
|
|
__set_errno (ERANGE);
|
|
|
|
return r;
|
|
}
|
|
#ifndef __fdim
|
|
weak_alias (__fdim, fdim)
|
|
# ifdef NO_LONG_DOUBLE
|
|
strong_alias (__fdim, __fdiml)
|
|
weak_alias (__fdim, fdiml)
|
|
# endif
|
|
#endif
|