Mercurial > hg > octave-lyh > gnulib-hg
changeset 9286:8af2c249410b
Test for module 'truncf'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 05 Oct 2007 01:08:22 +0200 |
parents | 79e67a783774 |
children | ec7800681aff |
files | ChangeLog modules/truncf-tests tests/test-truncf.c |
diffstat | 3 files changed, 100 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2007-10-04 Bruno Haible <bruno@clisp.org> + * modules/truncf-tests: New file. + * tests/test-truncf.c: New file. + * modules/truncf: New file. * lib/trunc.c: Make paramerizable through USE_* macros. * lib/truncf.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/truncf-tests @@ -0,0 +1,14 @@ +Files: +tests/test-truncf.c + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-truncf +check_PROGRAMS += test-truncf +test_truncf_LDADD = $(LDADD) @TRUNCF_LIBM@ + +License: +LGPL
new file mode 100644 --- /dev/null +++ b/tests/test-truncf.c @@ -0,0 +1,83 @@ +/* Test of rounding towards zero. + Copyright (C) 2007 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 2, 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, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* Written by Bruno Haible <bruno@clisp.org>, 2007. */ + +#include <config.h> + +#include <math.h> + +#include <stdio.h> +#include <stdlib.h> + +#define ASSERT(expr) \ + do \ + { \ + if (!(expr)) \ + { \ + fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ + abort (); \ + } \ + } \ + while (0) + +/* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0. */ +#ifdef __DECC +static float +NaN () +{ + static float zero = 0.0f; + return zero / zero; +} +#else +# define NaN() (0.0f / 0.0f) +#endif + +int +main () +{ + /* Zero. */ + ASSERT (truncf (0.0f) == 0.0f); + ASSERT (truncf (-0.0f) == 0.0f); + /* Positive numbers. */ + ASSERT (truncf (0.3f) == 0.0f); + ASSERT (truncf (0.7f) == 0.0f); + ASSERT (truncf (1.0f) == 1.0f); + ASSERT (truncf (1.5f) == 1.0f); + ASSERT (truncf (1.999f) == 1.0f); + ASSERT (truncf (2.0f) == 2.0f); + ASSERT (truncf (65535.99f) == 65535.0f); + ASSERT (truncf (65536.0f) == 65536.0f); + ASSERT (truncf (2.341e31f) == 2.341e31f); + /* Negative numbers. */ + ASSERT (truncf (-0.3f) == 0.0f); + ASSERT (truncf (-0.7f) == 0.0f); + ASSERT (truncf (-1.0f) == -1.0f); + ASSERT (truncf (-1.5f) == -1.0f); + ASSERT (truncf (-1.999f) == -1.0f); + ASSERT (truncf (-2.0f) == -2.0f); + ASSERT (truncf (-65535.99f) == -65535.0f); + ASSERT (truncf (-65536.0f) == -65536.0f); + ASSERT (truncf (-2.341e31f) == -2.341e31f); + /* Infinite numbers. */ + ASSERT (truncf (1.0f / 0.0f) == 1.0f / 0.0f); + ASSERT (truncf (-1.0f / 0.0f) == -1.0f / 0.0f); + /* NaNs. */ + ASSERT (isnan (truncf (NaN ()))); + + return 0; +}