Mercurial > hg > octave-nkf > gnulib-hg
changeset 12801:b1975d683b36
Tests for module 'modf'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 25 Jan 2010 02:14:54 +0100 |
parents | 7216e2b4056f |
children | 62ac443b2502 |
files | ChangeLog modules/modf-tests tests/test-modf.c |
diffstat | 3 files changed, 65 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2010-01-24 Bruno Haible <bruno@clisp.org> + Tests for module 'modf'. + * modules/modf-tests: New file. + * tests/test-modf.c: New file. + Tests for module 'logb'. * modules/logb-tests: New file. * tests/test-logb.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/modf-tests @@ -0,0 +1,13 @@ +Files: +tests/test-modf.c +tests/signature.h +tests/macros.h + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-modf +check_PROGRAMS += test-modf +test_modf_LDADD = $(LDADD) @MODF_LIBM@
new file mode 100644 --- /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; +}