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/* Test of rounding towards positive infinity.
Copyright (C) 2007 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 2, 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, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#define ASSERT(expr) \
do \
{ \
if (!(expr)) \
{ \
fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
abort (); \
} \
} \
while (0)
/* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0. */
#ifdef __DECC
static float
NaN ()
{
static float zero = 0.0f;
return zero / zero;
}
#else
# define NaN() (0.0f / 0.0f)
#endif
int
main ()
{
/* Zero. */
ASSERT (ceilf (0.0f) == 0.0f);
ASSERT (ceilf (-0.0f) == 0.0f);
/* Positive numbers. */
ASSERT (ceilf (0.3f) == 1.0f);
ASSERT (ceilf (0.7f) == 1.0f);
ASSERT (ceilf (1.0f) == 1.0f);
ASSERT (ceilf (1.001f) == 2.0f);
ASSERT (ceilf (1.5f) == 2.0f);
ASSERT (ceilf (1.999f) == 2.0f);
ASSERT (ceilf (2.0f) == 2.0f);
ASSERT (ceilf (65535.99f) == 65536.0f);
ASSERT (ceilf (65536.0f) == 65536.0f);
ASSERT (ceilf (2.341e31f) == 2.341e31f);
/* Negative numbers. */
ASSERT (ceilf (-0.3f) == 0.0f);
ASSERT (ceilf (-0.7f) == 0.0f);
ASSERT (ceilf (-1.0f) == -1.0f);
ASSERT (ceilf (-1.5f) == -1.0f);
ASSERT (ceilf (-1.999f) == -1.0f);
ASSERT (ceilf (-2.0f) == -2.0f);
ASSERT (ceilf (-65535.99f) == -65535.0f);
ASSERT (ceilf (-65536.0f) == -65536.0f);
ASSERT (ceilf (-2.341e31f) == -2.341e31f);
/* Infinite numbers. */
ASSERT (ceilf (1.0f / 0.0f) == 1.0f / 0.0f);
ASSERT (ceilf (-1.0f / 0.0f) == -1.0f / 0.0f);
/* NaNs. */
ASSERT (isnan (ceilf (NaN ())));
return 0;
}
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