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80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
/* Test of rounding towards negative infinity.
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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 3 of the License, or
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(at your option) 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, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
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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 (floorl (0.0L) == 0.0L);
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ASSERT (floorl (-0.0L) == 0.0L);
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/* Positive numbers. */
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ASSERT (floorl (0.3L) == 0.0L);
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ASSERT (floorl (0.7L) == 0.0L);
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ASSERT (floorl (1.0L) == 1.0L);
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ASSERT (floorl (1.5L) == 1.0L);
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ASSERT (floorl (1.999L) == 1.0L);
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ASSERT (floorl (2.0L) == 2.0L);
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ASSERT (floorl (65535.999L) == 65535.0L);
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ASSERT (floorl (65536.0L) == 65536.0L);
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ASSERT (floorl (2.341e31L) == 2.341e31L);
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/* Negative numbers. */
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ASSERT (floorl (-0.3L) == -1.0L);
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ASSERT (floorl (-0.7L) == -1.0L);
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ASSERT (floorl (-1.0L) == -1.0L);
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ASSERT (floorl (-1.001L) == -2.0L);
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ASSERT (floorl (-1.5L) == -2.0L);
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ASSERT (floorl (-1.999L) == -2.0L);
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ASSERT (floorl (-2.0L) == -2.0L);
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ASSERT (floorl (-65535.999L) == -65536.0L);
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ASSERT (floorl (-65536.0L) == -65536.0L);
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ASSERT (floorl (-2.341e31L) == -2.341e31L);
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/* Infinite numbers. */
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ASSERT (floorl (1.0L / 0.0L) == 1.0L / 0.0L);
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ASSERT (floorl (-1.0L / 0.0L) == -1.0L / 0.0L);
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/* NaNs. */
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ASSERT (isnanl (floorl (0.0L / 0.0L)));
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return 0;
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}
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