Mercurial > hg > octave-lyh > gnulib-hg
changeset 9283:0fdd2b755ce6
Test for module 'trunc'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Thu, 04 Oct 2007 03:23:10 +0200 |
parents | 9a26e94f946a |
children | afba4e078ebc |
files | ChangeLog modules/trunc-tests tests/test-trunc.c |
diffstat | 3 files changed, 112 insertions(+), 0 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,18 @@ +2007-10-03 Bruno Haible <bruno@clisp.org> + + * modules/trunc-tests: New file. + * tests/test-trunc.c: New file. + + * modules/trunc: New file. + * lib/trunc.c: New file. + * m4/trunc.m4: New file. + * lib/math.in.h (trunc): New declaration. + * m4/math_h.m4 (gl_MATH_H_DEFAULTS): Initialize GNULIB_TRUNC and + HAVE_DECL_TRUNC. + * modules/math (Makefile.am): Substitute also GNULIB_TRUNC and + HAVE_DECL_TRUNC. + * doc/functions/trunc.texi: Mention the 'trunc' module. + 2007-10-03 Bruno Haible <bruno@clisp.org> * tests/test-fpending.c: New file, mostly copied
new file mode 100644 --- /dev/null +++ b/modules/trunc-tests @@ -0,0 +1,14 @@ +Files: +tests/test-trunc.c + +Depends-on: + +configure.ac: + +Makefile.am: +TESTS += test-trunc +check_PROGRAMS += test-trunc +test_trunc_LDADD = $(LDADD) @TRUNC_LIBM@ + +License: +LGPL
new file mode 100644 --- /dev/null +++ b/tests/test-trunc.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 double +NaN () +{ + static double zero = 0.0; + return zero / zero; +} +#else +# define NaN() (0.0 / 0.0) +#endif + +int +main () +{ + /* Zero. */ + ASSERT (trunc (0.0) == 0.0); + ASSERT (trunc (-0.0) == 0.0); + /* Positive numbers. */ + ASSERT (trunc (0.3) == 0.0); + ASSERT (trunc (0.7) == 0.0); + ASSERT (trunc (1.0) == 1.0); + ASSERT (trunc (1.5) == 1.0); + ASSERT (trunc (1.999) == 1.0); + ASSERT (trunc (2.0) == 2.0); + ASSERT (trunc (65535.999) == 65535.0); + ASSERT (trunc (65536.0) == 65536.0); + ASSERT (trunc (2.341e31) == 2.341e31); + /* Negative numbers. */ + ASSERT (trunc (-0.3) == 0.0); + ASSERT (trunc (-0.7) == 0.0); + ASSERT (trunc (-1.0) == -1.0); + ASSERT (trunc (-1.5) == -1.0); + ASSERT (trunc (-1.999) == -1.0); + ASSERT (trunc (-2.0) == -2.0); + ASSERT (trunc (-65535.999) == -65535.0); + ASSERT (trunc (-65536.0) == -65536.0); + ASSERT (trunc (-2.341e31) == -2.341e31); + /* Infinite numbers. */ + ASSERT (trunc (1.0 / 0.0) == 1.0 / 0.0); + ASSERT (trunc (-1.0 / 0.0) == -1.0 / 0.0); + /* NaNs. */ + ASSERT (isnan (trunc (NaN ()))); + + return 0; +}