Mercurial > gnulib
view tests/test-truncf1.c @ 29955:e4b084d57f9e
Rename isnand.h to isnand-nolibm.h, similarly for isnanf.h.
author | Ben Pfaff <blp@cs.stanford.edu> |
---|---|
date | Sat, 12 Jul 2008 10:41:34 -0700 |
parents | f6378ee83796 |
children | 06a4179ed804 |
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/* Test of rounding towards zero. Copyright (C) 2007-2008 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>, 2007. */ #include <config.h> #include <math.h> #include <stdio.h> #include <stdlib.h> #include "isnanf-nolibm.h" #include "nan.h" #define ASSERT(expr) \ do \ { \ if (!(expr)) \ { \ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ fflush (stderr); \ abort (); \ } \ } \ while (0) 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 (isnanf (truncf (NaNf ()))); return 0; }