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author | Bruno Haible <bruno@clisp.org> | 2010-01-25 02:14:54 +0100 |
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committer | Bruno Haible <bruno@clisp.org> | 2010-01-25 02:16:54 +0100 |
commit | 05edbffcd49b284a6fbedb15f10e2c67eb4b4f17 (patch) | |
tree | cc51c3143ba3dc167722016eb76b46f2b4ef3033 /tests/test-modf.c | |
parent | de58fd98f4ede3c8da870f8df3934735ee1a3531 (diff) | |
download | gnulib-05edbffcd49b284a6fbedb15f10e2c67eb4b4f17.tar.gz |
Tests for module 'modf'.
Diffstat (limited to 'tests/test-modf.c')
-rw-r--r-- | tests/test-modf.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/tests/test-modf.c b/tests/test-modf.c new file mode 100644 index 0000000000..754a729c42 --- /dev/null +++ b/tests/test-modf.c @@ -0,0 +1,48 @@ +/* Test of modf() function. + Copyright (C) 2010 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/>. */ + +/* Written by Bruno Haible <bruno@clisp.org>, 2010. */ + +#include <config.h> + +#include <math.h> + +#include "signature.h" +SIGNATURE_CHECK (modf, double, (double, double *)); + +#include "macros.h" + +volatile double x; +double y; +double z; + +int +main () +{ + /* A particular positive value. */ + x = 5.972406760; + y = modf (x, &z); + ASSERT (y >= 0.972406759 && y <= 0.972406761); + ASSERT (z == 5.0); + + /* A particular negative value. */ + x = -5.972406760; + y = modf (x, &z); + ASSERT (y >= -0.972406761 && y <= 0.972406759); + ASSERT (z == -5.0); + + return 0; +} |