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101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* Test of rintf() function.
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Copyright (C) 2010-2017 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 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>, 2010. */
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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 (rintf, float, (float));
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#include <float.h>
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#include <stdio.h>
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#include "isnanf-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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#undef INFINITY
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#undef NAN
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#define DOUBLE float
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#define ISNAN isnanf
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#define INFINITY Infinityf ()
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#define NAN NaNf ()
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#define L_(literal) literal##f
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#define RINT rintf
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#define RANDOM randomf
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#include "test-rint.h"
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int
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main ()
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{
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/* Consider the current rounding mode, cf.
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<http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/float.h.html> */
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if (FLT_ROUNDS == 1)
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{
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/* The current rounding mode is round-to-nearest
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(the default in IEEE 754). */
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/* Zero. */
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ASSERT (rintf (0.0f) == 0.0f);
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ASSERT (rintf (minus_zerof) == 0.0f);
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/* Positive numbers. */
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ASSERT (rintf (0.3f) == 0.0f);
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ASSERT (rintf (0.5f) == 0.0f); /* unlike roundf() */
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ASSERT (rintf (0.7f) == 1.0f);
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ASSERT (rintf (1.0f) == 1.0f);
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ASSERT (rintf (1.5f) == 2.0f);
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ASSERT (rintf (1.999f) == 2.0f);
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ASSERT (rintf (2.0f) == 2.0f);
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ASSERT (rintf (2.1f) == 2.0f);
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ASSERT (rintf (2.5f) == 2.0f); /* unlike roundf() */
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ASSERT (rintf (2.7f) == 3.0f);
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ASSERT (rintf (65535.99f) == 65536.0f);
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ASSERT (rintf (65536.0f) == 65536.0f);
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ASSERT (rintf (65536.01f) == 65536.0f);
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ASSERT (rintf (2.341e31f) == 2.341e31f);
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/* Negative numbers. */
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ASSERT (rintf (-0.3f) == 0.0f);
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ASSERT (rintf (-0.5f) == 0.0f); /* unlike roundf() */
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ASSERT (rintf (-0.7f) == -1.0f);
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ASSERT (rintf (-1.0f) == -1.0f);
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ASSERT (rintf (-1.5f) == -2.0f);
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ASSERT (rintf (-1.999f) == -2.0f);
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ASSERT (rintf (-2.0f) == -2.0f);
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ASSERT (rintf (-2.1f) == -2.0f);
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ASSERT (rintf (-2.5f) == -2.0f); /* unlike roundf() */
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ASSERT (rintf (-2.7f) == -3.0f);
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ASSERT (rintf (-65535.99f) == -65536.0f);
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ASSERT (rintf (-65536.0f) == -65536.0f);
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ASSERT (rintf (-65536.01f) == -65536.0f);
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ASSERT (rintf (-2.341e31f) == -2.341e31f);
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test_function ();
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return 0;
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}
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else
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{
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fputs ("Skipping test: non-standard rounding mode\n", stderr);
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return 77;
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}
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}
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