> 2011-10-09 Bruno Haible <br...@clisp.org>
>
> copysign: Provide replacement.
While at it, I also added modules for 'copysignf' and 'copysignl'.
2011-10-09 Bruno Haible <br...@clisp.org>
New module 'copysignf'.
* lib/math.in.h (copysignf): New declaration.
* lib/copysignf.c: New file.
* m4/copysignf.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether copysignf is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_COPYSIGNF, HAVE_COPYSIGNF.
* modules/math (Makefile.am): Substitute GNULIB_COPYSIGNF,
HAVE_COPYSIGNF.
* modules/copysignf: New file.
* tests/test-math-c++.cc: Check the declaration of copysignf.
* doc/posix-functions/copysignf.texi: Mention the new module.
New module 'copysignl'.
* lib/math.in.h (copysignl): New declaration.
* lib/copysignl.c: New file.
* m4/copysignl.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether copysignl is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_COPYSIGNL, HAVE_COPYSIGNL.
* modules/math (Makefile.am): Substitute GNULIB_COPYSIGNL,
HAVE_COPYSIGNL.
* modules/copysignl: New file.
* tests/test-math-c++.cc: Check the declaration of copysignl.
* modules/math-c++-tests (Makefile.am): Link test-math-c++ against
$(COPYSIGNL_LIBM). Needed on IRIX 6.5 with cc.
* doc/posix-functions/copysignl.texi: Mention the new module.
=============================== lib/copysignf.c ===============================
/* Copy sign into another 'float' number.
Copyright (C) 2011 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 <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <math.h>
float
copysignf (float x, float y)
{
return (signbit (x) != signbit (y) ? - x : x);
}
=============================== lib/copysignl.c ===============================
/* Copy sign into another 'long double' number.
Copyright (C) 2011 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 <http://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <math.h>
long double
copysignl (long double x, long double y)
{
return (signbit (x) != signbit (y) ? - x : x);
}
===============================================================================
--
In memoriam Oskar Schindler <http://en.wikipedia.org/wiki/Oskar_Schindler>
<http://www.shoah.dk/Courage/Schindler.htm>
