diff options
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | modules/nextafter-tests | 13 | ||||
| -rw-r--r-- | tests/test-nextafter.c | 53 |
3 files changed, 70 insertions, 0 deletions
@@ -1,5 +1,9 @@ 2010-01-24 Bruno Haible <bruno@clisp.org> + Tests for module 'nextafter'. + * modules/nextafter-tests: New file. + * tests/test-nextafter.c: New file. + Tests for module 'modf'. * modules/modf-tests: New file. * tests/test-modf.c: New file. diff --git a/modules/nextafter-tests b/modules/nextafter-tests new file mode 100644 index 0000000000..1bb372a1fe --- /dev/null +++ b/modules/nextafter-tests @@ -0,0 +1,13 @@ +Files: +tests/test-nextafter.c +tests/signature.h +tests/macros.h + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-nextafter +check_PROGRAMS += test-nextafter +test_nextafter_LDADD = $(LDADD) @NEXTAFTER_LIBM@ diff --git a/tests/test-nextafter.c b/tests/test-nextafter.c new file mode 100644 index 0000000000..bc1d40f811 --- /dev/null +++ b/tests/test-nextafter.c @@ -0,0 +1,53 @@ +/* Test of nextafter() 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 (nextafter, double, (double, double)); + +#include "macros.h" + +volatile double x; +double y; + +int +main () +{ + /* A particular value. */ + x = 1.628947572; + /* Towards 0. */ + y = nextafter (x, 0); + ASSERT (y < x); + ASSERT (y > 1.628947571); + y = nextafter (y, x + x); + ASSERT (y == x); + /* Towards infinity. */ + y = nextafter (x, x + x); + ASSERT (y > x); + ASSERT (y < 1.628947573); + y = nextafter (y, 0); + ASSERT (y == x); + /* Towards itself. */ + y = nextafter (x, x); + ASSERT (y == x); + + return 0; +} |