Hash :
54a8ff34
Author :
Date :
2011-10-08T22:18:44
New module 'logf'. * lib/math.in.h (logf): New declaration. * lib/logf.c: New file. * m4/logf.m4: New file. * m4/math_h.m4 (gl_MATH_H): Test whether logf is declared. (gl_MATH_H_DEFAULTS): Initialize GNULIB_LOGF, HAVE_LOGF. * modules/math (Makefile.am): Substitute GNULIB_LOGF, HAVE_LOGF. * modules/logf: New file. * tests/test-math-c++.cc: Check the declaration of logf. * doc/posix-functions/logf.texi: Mention the new module.
/* Natural logarithmic function.
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
logf (float x)
{
return (float) log ((double) x);
}