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author | Bruno Haible <bruno@clisp.org> | 2011-10-08 22:10:45 +0200 |
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committer | Bruno Haible <bruno@clisp.org> | 2011-10-08 22:10:45 +0200 |
commit | a87ae2d257362ae83d26a51ab87d2226ec61d62b (patch) | |
tree | 4b140b803d6e7e114f7027b095c97c8ab2498fcb /lib/expf.c | |
parent | ba82f2877733278a887f1754c2f9e4a726dc2251 (diff) | |
download | gnulib-a87ae2d257362ae83d26a51ab87d2226ec61d62b.tar.gz |
New module 'expf'.
* lib/math.in.h (expf): New declaration.
* lib/expf.c: New file.
* m4/expf.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether expf is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_EXPF, HAVE_EXPF.
* modules/math (Makefile.am): Substitute GNULIB_EXPF, HAVE_EXPF.
* modules/expf: New file.
* tests/test-math-c++.cc: Check the declaration of expf.
* doc/posix-functions/expf.texi: Mention the new module.
Diffstat (limited to 'lib/expf.c')
-rw-r--r-- | lib/expf.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/expf.c b/lib/expf.c new file mode 100644 index 0000000000..a16dbea31e --- /dev/null +++ b/lib/expf.c @@ -0,0 +1,26 @@ +/* Exponential 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 +expf (float x) +{ + return (float) exp ((double) x); +} |