Mercurial > hg > octave-lyh > gnulib-hg
changeset 16520:f3f65bf30b19
Tests for module 'hypotl'.
* modules/hypotl-tests: New file.
* tests/test-hypotl.c: New file.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Wed, 29 Feb 2012 15:46:45 +0100 |
parents | 52c75970f518 |
children | bceff178bb99 |
files | ChangeLog modules/hypotl-tests tests/test-hypotl.c |
diffstat | 3 files changed, 79 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2012-02-29 Bruno Haible <bruno@clisp.org> + Tests for module 'hypotl'. + * modules/hypotl-tests: New file. + * tests/test-hypotl.c: New file. + New module 'hypotl'. * lib/math.in.h (hypotl): New declaration. * lib/hypotl.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/hypotl-tests @@ -0,0 +1,13 @@ +Files: +tests/test-hypotl.c +tests/signature.h +tests/macros.h + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-hypotl +check_PROGRAMS += test-hypotl +test_hypotl_LDADD = $(LDADD) @HYPOTL_LIBM@
new file mode 100644 --- /dev/null +++ b/tests/test-hypotl.c @@ -0,0 +1,62 @@ +/* Test of hypotl() function. + Copyright (C) 2010-2012 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 (hypotl, long double, (long double, long double)); + +#include <float.h> + +#include "macros.h" + +volatile long double x; +volatile long double y; +long double z; + +int +main () +{ + /* A particular value. */ + x = 0.4L; + y = 0.6L; + z = hypotl (x, y); + ASSERT (z >= 0.7211102550L && z <= 0.7211102551L); + + /* Overflow. */ + x = LDBL_MAX; + y = LDBL_MAX * 0.5L; + z = hypotl (x, y); + ASSERT (z == HUGE_VALL); + + /* No underflow. */ + x = LDBL_MIN; + y = 0.0L; + z = hypotl (x, y); + ASSERT (z == LDBL_MIN); + + /* No underflow. */ + x = LDBL_MIN * 2.0L; + y = LDBL_MIN * 3.0L; + z = hypotl (x, y); + ASSERT (z >= LDBL_MIN * 2.0L && z <= LDBL_MIN * 4.0L); + + return 0; +}