Mercurial > hg > octave-nkf > gnulib-hg
changeset 12781:291ed6355aea
Tests for module 'atan2'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 25 Jan 2010 02:01:07 +0100 |
parents | dabe4e712313 |
children | e01dd71f171d |
files | ChangeLog modules/atan2-tests tests/test-atan2.c |
diffstat | 3 files changed, 77 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 'atan2'. + * modules/atan2-tests: New file. + * tests/test-atan2.c: New file. + Tests for module 'atan'. * modules/atan-tests: New file. * tests/test-atan.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/atan2-tests @@ -0,0 +1,13 @@ +Files: +tests/test-atan2.c +tests/signature.h +tests/macros.h + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-atan2 +check_PROGRAMS += test-atan2 +test_atan2_LDADD = $(LDADD) @ATAN2_LIBM@
new file mode 100644 --- /dev/null +++ b/tests/test-atan2.c @@ -0,0 +1,60 @@ +/* Test of atan2() 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 (atan2, double, (double, double)); + +#include "macros.h" + +volatile double x; +volatile double y; +double z; + +int +main () +{ + /* A particular value in the first quadrant. */ + x = 0.6; + y = 0.8; + z = atan2 (y, x); + ASSERT (z >= 0.9272952180 && z <= 0.9272952181); + + /* A particular value in the second quadrant. */ + x = -0.6; + y = 0.8; + z = atan2 (y, x); + ASSERT (z >= 2.214297435 && z <= 2.214297436); + + /* A particular value in the third quadrant. */ + x = -0.6; + y = -0.8; + z = atan2 (y, x); + ASSERT (z >= -2.214297436 && z <= -2.214297435); + + /* A particular value in the fourth quadrant. */ + x = 0.6; + y = -0.8; + z = atan2 (y, x); + ASSERT (z >= -0.9272952181 && z <= -0.9272952180); + + return 0; +}