Mercurial > hg > octave-lojdl > gnulib-hg
changeset 12795:3f1d217466ee
Tests for module 'ldexp'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 25 Jan 2010 02:09:33 +0100 |
parents | a38215b1d5b6 |
children | 51cdbee6290c |
files | ChangeLog modules/ldexp-tests tests/test-ldexp.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 'ldexp'. + * modules/ldexp-tests: New file. + * tests/test-ldexp.c: New file. + Tests for module 'jn'. * modules/jn-tests: New file. * tests/test-jn.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/ldexp-tests @@ -0,0 +1,13 @@ +Files: +tests/test-ldexp.c +tests/signature.h +tests/macros.h + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-ldexp +check_PROGRAMS += test-ldexp +test_ldexp_LDADD = $(LDADD) @LDEXP_LIBM@
new file mode 100644 --- /dev/null +++ b/tests/test-ldexp.c @@ -0,0 +1,48 @@ +/* Test of ldexp() 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 (ldexp, double, (double, int)); + +#include "macros.h" + +volatile double x; +double y; + +int +main () +{ + /* A particular value. */ + x = 0.6; + y = ldexp (x, 0); + ASSERT (y >= 0.5999999999 && y <= 0.6000000001); + + x = 0.6; + y = ldexp (x, 1); + ASSERT (y >= 1.199999999 && y <= 1.200000001); + + x = 0.6; + y = ldexp (x, -1); + ASSERT (y >= 0.2999999999 && y <= 0.3000000001); + + return 0; +}