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87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
/* Test of rounding to nearest, breaking ties away from zero.
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Copyright (C) 2007-2008 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/* Written by Ben Pfaff <blp@gnu.org>, 2007.
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Based heavily on Bruno Haible's test-truncl.c. */
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#include <config.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "fpucw.h"
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#include "isnanl-nolibm.h"
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#define ASSERT(expr) \
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do \
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{ \
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if (!(expr)) \
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{ \
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fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
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fflush (stderr); \
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abort (); \
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} \
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} \
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while (0)
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int
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main ()
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{
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DECL_LONG_DOUBLE_ROUNDING
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BEGIN_LONG_DOUBLE_ROUNDING ();
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/* Zero. */
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ASSERT (roundl (0.0L) == 0.0L);
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ASSERT (roundl (-0.0L) == 0.0L);
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/* Positive numbers. */
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ASSERT (roundl (0.3L) == 0.0L);
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ASSERT (roundl (0.5L) == 1.0L);
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ASSERT (roundl (0.7L) == 1.0L);
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ASSERT (roundl (1.0L) == 1.0L);
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ASSERT (roundl (1.5L) == 2.0L);
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ASSERT (roundl (2.5L) == 3.0L);
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ASSERT (roundl (1.999L) == 2.0L);
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ASSERT (roundl (2.0L) == 2.0L);
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ASSERT (roundl (65535.999L) == 65536.0L);
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ASSERT (roundl (65536.0L) == 65536.0L);
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ASSERT (roundl (65536.001L) == 65536.0L);
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ASSERT (roundl (2.341e31L) == 2.341e31L);
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/* Negative numbers. */
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ASSERT (roundl (-0.3L) == 0.0L);
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ASSERT (roundl (-0.5L) == -1.0L);
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ASSERT (roundl (-0.7L) == -1.0L);
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ASSERT (roundl (-1.0L) == -1.0L);
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ASSERT (roundl (-1.5L) == -2.0L);
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ASSERT (roundl (-2.5L) == -3.0L);
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ASSERT (roundl (-1.999L) == -2.0L);
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ASSERT (roundl (-2.0L) == -2.0L);
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ASSERT (roundl (-65535.999L) == -65536.0L);
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ASSERT (roundl (-65536.0L) == -65536.0L);
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ASSERT (roundl (-65536.001L) == -65536.0L);
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ASSERT (roundl (-2.341e31L) == -2.341e31L);
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/* Infinite numbers. */
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ASSERT (roundl (1.0 / 0.0L) == 1.0 / 0.0L);
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ASSERT (roundl (-1.0 / 0.0L) == -1.0 / 0.0L);
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/* NaNs. */
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ASSERT (isnanl (roundl (0.0L / 0.0L)));
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return 0;
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}
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