Mercurial > hg > octave-kai > gnulib-hg
changeset 15912:4dc23e6fdabd
Tests for module 'copysignf'.
* modules/copysignf-tests: New file.
* tests/test-copysignf.c: New file.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 09 Oct 2011 15:43:44 +0200 |
parents | bc21ee3c09aa |
children | adefeca52f7d |
files | ChangeLog modules/copysignf-tests tests/test-copysignf.c |
diffstat | 3 files changed, 129 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2011-10-09 Bruno Haible <bruno@clisp.org> + Tests for module 'copysignf'. + * modules/copysignf-tests: New file. + * tests/test-copysignf.c: New file. + New module 'copysignf'. * lib/math.in.h (copysignf): New declaration. * lib/copysignf.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/copysignf-tests @@ -0,0 +1,14 @@ +Files: +tests/test-copysignf.c +tests/signature.h +tests/minus-zero.h +tests/macros.h + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-copysignf +check_PROGRAMS += test-copysignf +test_copysignf_LDADD = $(LDADD) @COPYSIGNF_LIBM@
new file mode 100644 --- /dev/null +++ b/tests/test-copysignf.c @@ -0,0 +1,111 @@ +/* Test of copysignf() function. + Copyright (C) 2010-2011 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/>. */ + +/* Written by Bruno Haible <bruno@clisp.org>, 2010-2011. */ + +#include <config.h> + +#include <math.h> + +#include "signature.h" +SIGNATURE_CHECK (copysignf, double, (double, double)); + +#include "macros.h" +#include "minus-zero.h" + +#include <string.h> + +volatile float x; +volatile float y; +float z; +float zero = 0.0f; + +int +main () +{ + /* A particular value in the first quadrant. */ + x = 0.6f; + y = 0.8f; + z = copysignf (x, y); + ASSERT (z == 0.6f); + + /* A particular value in the second quadrant. */ + x = -0.6f; + y = 0.8f; + z = copysignf (x, y); + ASSERT (z == 0.6f); + + /* A particular value in the third quadrant. */ + x = -0.6f; + y = -0.8f; + z = copysignf (x, y); + ASSERT (z == -0.6f); + + /* A particular value in the fourth quadrant. */ + x = 0.6f; + y = -0.8f; + z = copysignf (x, y); + ASSERT (z == -0.6f); + + /* From signed zero. */ + x = 1.0f; + y = 0.0f; + z = copysignf (x, y); + ASSERT (z == 1.0f); + + x = 1.0f; + y = minus_zerof; + z = copysignf (x, y); + /* Assume all gnulib targets support -0.0f, until proven otherwise. */ + ASSERT (z == -1.0f); + + x = -1.0f; + y = 0.0f; + z = copysignf (x, y); + ASSERT (z == 1.0f); + + x = -1.0f; + y = minus_zerof; + z = copysignf (x, y); + ASSERT (z == -1.0f); + + /* To signed zero. */ + x = 0.0f; + y = 1.0f; + z = copysignf (x, y); + ASSERT (z == 0.0f); + ASSERT (memcmp (&z, &zero, sizeof z) == 0); + + x = 0.0f; + y = -1.0f; + z = copysignf (x, y); + ASSERT (z == 0.0f); + ASSERT (memcmp (&z, &zero, sizeof z) != 0); + + x = minus_zerof; + y = 1.0f; + z = copysignf (x, y); + ASSERT (z == 0.0f); + ASSERT (memcmp (&z, &zero, sizeof z) == 0); + + x = minus_zerof; + y = -1.0f; + z = copysignf (x, y); + ASSERT (z == 0.0f); + ASSERT (memcmp (&z, &zero, sizeof z) != 0); + + return 0; +}