Mercurial > hg > octave-lyh > gnulib-hg
changeset 9292:7ad74ca8acb4
Test for module 'floorf'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 05 Oct 2007 03:02:59 +0200 |
parents | 5828ff66b473 |
children | b4e0b96fc4ba |
files | ChangeLog modules/floorf-tests tests/test-floorf.c |
diffstat | 3 files changed, 101 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2007-10-04 Bruno Haible <bruno@clisp.org> + * modules/floorf-tests: New file. + * tests/test-floorf.c: New file. + * modules/floorf: New file. * lib/floor.c: New file. * lib/floorf.c: New file.
new file mode 100644 --- /dev/null +++ b/modules/floorf-tests @@ -0,0 +1,14 @@ +Files: +tests/test-floorf.c + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-floorf +check_PROGRAMS += test-floorf +test_floorf_LDADD = $(LDADD) @FLOORF_LIBM@ + +License: +LGPL
new file mode 100644 --- /dev/null +++ b/tests/test-floorf.c @@ -0,0 +1,84 @@ +/* Test of rounding towards negative infinity. + 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 (floorf (0.0f) == 0.0f); + ASSERT (floorf (-0.0f) == 0.0f); + /* Positive numbers. */ + ASSERT (floorf (0.3f) == 0.0f); + ASSERT (floorf (0.7f) == 0.0f); + ASSERT (floorf (1.0f) == 1.0f); + ASSERT (floorf (1.5f) == 1.0f); + ASSERT (floorf (1.999f) == 1.0f); + ASSERT (floorf (2.0f) == 2.0f); + ASSERT (floorf (65535.99f) == 65535.0f); + ASSERT (floorf (65536.0f) == 65536.0f); + ASSERT (floorf (2.341e31f) == 2.341e31f); + /* Negative numbers. */ + ASSERT (floorf (-0.3f) == -1.0f); + ASSERT (floorf (-0.7f) == -1.0f); + ASSERT (floorf (-1.0f) == -1.0f); + ASSERT (floorf (-1.001f) == -2.0f); + ASSERT (floorf (-1.5f) == -2.0f); + ASSERT (floorf (-1.999f) == -2.0f); + ASSERT (floorf (-2.0f) == -2.0f); + ASSERT (floorf (-65535.99f) == -65536.0f); + ASSERT (floorf (-65536.0f) == -65536.0f); + ASSERT (floorf (-2.341e31f) == -2.341e31f); + /* Infinite numbers. */ + ASSERT (floorf (1.0f / 0.0f) == 1.0f / 0.0f); + ASSERT (floorf (-1.0f / 0.0f) == -1.0f / 0.0f); + /* NaNs. */ + ASSERT (isnan (floorf (NaN ()))); + + return 0; +}