mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 03:40:34 +02:00
524140436f
* lib/copysign.c: * lib/isfinite.c: * lib/isnanf-nolibm.h: * lib/isnanl-nolibm.h: * lib/signbitd.c: * lib/signbitf.c: * lib/signbitl.c: * m4/copysign.m4: * m4/isfinite.m4: * m4/signbit.m4: New files.
26 lines
922 B
C
26 lines
922 B
C
/* Copy sign into another 'double' number.
|
|
Copyright (C) 2011-2013 Free Software Foundation, Inc.
|
|
|
|
This program 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 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 Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include <math.h>
|
|
|
|
double
|
|
copysign (double x, double y)
|
|
{
|
|
return (signbit (x) != signbit (y) ? - x : x);
|
|
}
|