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80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/* Test of rounding to nearest, breaking ties away from zero.
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Copyright (C) 2007-2017 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, 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, see <http://www.gnu.org/licenses/>. */
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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 "signature.h"
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SIGNATURE_CHECK (roundl, long double, (long double));
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#include <float.h>
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#include "fpucw.h"
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#include "isnanl-nolibm.h"
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#include "minus-zero.h"
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#include "infinity.h"
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#include "nan.h"
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#include "macros.h"
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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 (minus_zerol) == 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 (Infinityl ()) == Infinityl ());
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ASSERT (roundl (- Infinityl ()) == - Infinityl ());
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/* NaNs. */
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ASSERT (isnanl (roundl (NaNl ())));
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return 0;
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}
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