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Diffstat (limited to 'gnulib/tests/test-copysign.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/tests/test-copysign.c | 60 |
2 files changed, 60 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 4fc10daa05477586fea99b6b3ca02a87d1102fa diff --git a/gnulib/tests/test-copysign.c b/gnulib/tests/test-copysign.c new file mode 100644 index 00000000..60bda2fe --- /dev/null +++ b/gnulib/tests/test-copysign.c @@ -0,0 +1,60 @@ +/* Test of copysign() 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 (copysign, double, (double, double)); + +#include "macros.h" + +volatile double x; +volatile double y; +double z; + +int +main () +{ + /* A particular value in the first quadrant. */ + x = 0.6; + y = 0.8; + z = copysign (x, y); + ASSERT (z == 0.6); + + /* A particular value in the second quadrant. */ + x = -0.6; + y = 0.8; + z = copysign (x, y); + ASSERT (z == 0.6); + + /* A particular value in the third quadrant. */ + x = -0.6; + y = -0.8; + z = copysign (x, y); + ASSERT (z == -0.6); + + /* A particular value in the fourth quadrant. */ + x = 0.6; + y = -0.8; + z = copysign (x, y); + ASSERT (z == -0.6); + + return 0; +} |