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author | Bruno Haible <bruno@clisp.org> | 2012-03-08 20:24:53 +0100 |
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committer | Bruno Haible <bruno@clisp.org> | 2012-03-09 02:15:35 +0100 |
commit | bff4a106924f9531c45661e5d163470e9faa521a (patch) | |
tree | 4e3a5a20287aa1d6b07ef9d6ed1af7773bebca4c /lib/exp2f.c | |
parent | 6b168421262adda71eed4cca137c34c1a9d6b981 (diff) | |
download | gnulib-bff4a106924f9531c45661e5d163470e9faa521a.tar.gz |
New module 'exp2f'.
* lib/math.in.h (exp2f): New declaration.
* lib/exp2f.c: New file.
* m4/exp2f.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether exp2f is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_EXP2F, HAVE_DECL_EXP2F.
* modules/math (Makefile.am): Substitute GNULIB_EXP2F, HAVE_DECL_EXP2F.
* modules/exp2f: New file.
* tests/test-math-c++.cc: Check the declaration of exp2f.
* doc/posix-functions/exp2f.texi: Mention the new module and the
IRIX problem.
Diffstat (limited to 'lib/exp2f.c')
-rw-r--r-- | lib/exp2f.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/exp2f.c b/lib/exp2f.c new file mode 100644 index 0000000000..a3a3cdd45c --- /dev/null +++ b/lib/exp2f.c @@ -0,0 +1,26 @@ +/* Exponential base 2 function. + Copyright (C) 2011-2012 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 +exp2f (float x) +{ + return (float) exp2 ((double) x); +} |