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author | Bruno Haible <bruno@clisp.org> | 2011-10-09 00:31:51 +0200 |
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committer | Bruno Haible <bruno@clisp.org> | 2011-10-09 00:31:51 +0200 |
commit | a365e1e5d3afa9a9f12d38eacaade8cd8fe0020e (patch) | |
tree | afa8b6e0b6d1cf28cc21e9adc2c9e0c2c443cc0d /lib/atan2f.c | |
parent | 63dd3e85d427aba822aa3297ed97abc13b14c06a (diff) | |
download | gnulib-a365e1e5d3afa9a9f12d38eacaade8cd8fe0020e.tar.gz |
New module 'atan2f'.
* lib/math.in.h (atan2f): New declaration.
* lib/atan2f.c: New file.
* m4/atan2f.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whether atan2f is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_ATAN2F, HAVE_ATAN2F.
* modules/math (Makefile.am): Substitute GNULIB_ATAN2F, HAVE_ATAN2F.
* modules/atan2f: New file.
* tests/test-math-c++.cc: Check the declaration of atan2f.
* doc/posix-functions/atan2f.texi: Mention the new module.
Diffstat (limited to 'lib/atan2f.c')
-rw-r--r-- | lib/atan2f.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/atan2f.c b/lib/atan2f.c new file mode 100644 index 0000000000..09771f6a3e --- /dev/null +++ b/lib/atan2f.c @@ -0,0 +1,26 @@ +/* Angle of a point in the plane. + 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 +atan2f (float y, float x) +{ + return (float) atan2 ((double) y, (double) x); +} |