Mercurial > hg > octave-nkf > gnulib-hg
changeset 16515:026ce065f317
Tests for module 'hypotf'.
* modules/hypotf-tests: New file.
* tests/test-hypotf.c: New file.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Wed, 29 Feb 2012 13:24:23 +0100 |
parents | befd75611259 |
children | 35461659a298 |
files | ChangeLog modules/hypotf-tests tests/test-hypotf.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 'hypotf'. + * modules/hypotf-tests: New file. + * tests/test-hypotf.c: New file. + New module 'hypotf'. * lib/math.in.h (hypotf): New declaration. * lib/hypotf.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/hypotf-tests @@ -0,0 +1,13 @@ +Files: +tests/test-hypotf.c +tests/signature.h +tests/macros.h + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-hypotf +check_PROGRAMS += test-hypotf +test_hypotf_LDADD = $(LDADD) @HYPOTF_LIBM@
new file mode 100644 --- /dev/null +++ b/tests/test-hypotf.c @@ -0,0 +1,62 @@ +/* Test of hypotf() 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 (hypotf, float, (float, float)); + +#include <float.h> + +#include "macros.h" + +volatile float x; +volatile float y; +float z; + +int +main () +{ + /* A particular value. */ + x = 0.4f; + y = 0.6f; + z = hypot (x, y); + ASSERT (z >= 0.7211102f && z <= 0.7211103f); + + /* Overflow. */ + x = FLT_MAX; + y = FLT_MAX * 0.5f; + z = hypotf (x, y); + ASSERT (z == HUGE_VALF); + + /* No underflow. */ + x = FLT_MIN; + y = 0.0f; + z = hypotf (x, y); + ASSERT (z == FLT_MIN); + + /* No underflow. */ + x = FLT_MIN * 2.0f; + y = FLT_MIN * 3.0f; + z = hypotf (x, y); + ASSERT (z >= FLT_MIN * 2.0f && z <= FLT_MIN * 4.0f); + + return 0; +}