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/* Test file for mpfr_dim.
Copyright 2004 Free Software Foundation, Inc.
This file is part of the MPFR Library.
The MPFR Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The MPFR Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the MPFR Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA. */
#include <stdio.h>
#include <stdlib.h>
#include "mpfr-test.h"
int
main (void)
{
mpfr_t x, y, z;
tests_start_mpfr ();
mpfr_init (x);
mpfr_init (y);
mpfr_init (z);
/* case x=NaN */
mpfr_set_nan (x);
mpfr_set_ui (y, 0, GMP_RNDN);
mpfr_dim (z, x, y, GMP_RNDN);
if (!mpfr_nan_p (z))
{
printf ("Error in mpfr_dim (NaN, 0)\n");
exit (1);
}
/* case x=+Inf */
mpfr_set_inf (x, 1);
mpfr_set_ui (y, 0, GMP_RNDN);
mpfr_dim (z, x, y, GMP_RNDN);
if (!mpfr_inf_p (z) || mpfr_sgn (z) < 0)
{
printf ("Error in mpfr_dim (+Inf, 0)\n");
exit (1);
}
/* case x=-Inf */
mpfr_set_inf (x, -1);
mpfr_set_ui (y, 0, GMP_RNDN);
mpfr_dim (z, x, y, GMP_RNDN);
if (mpfr_cmp_ui (z, 0) || mpfr_sgn (z) < 0)
{
printf ("Error in mpfr_dim (-Inf, 0)\n");
exit (1);
}
/* case x=y=+Inf */
mpfr_set_inf (x, 1);
mpfr_set_inf (y, 1);
mpfr_dim (z, x, y, GMP_RNDN);
if (mpfr_cmp_ui (z, 0) || mpfr_sgn (z) < 0)
{
printf ("Error in mpfr_dim (+Inf, +Inf)\n");
exit (1);
}
/* case x > y */
mpfr_set_ui (x, 2, GMP_RNDN);
mpfr_set_ui (y, 1, GMP_RNDN);
mpfr_dim (z, x, y, GMP_RNDN);
if (mpfr_cmp_ui (z, 1))
{
printf ("Error in mpfr_dim (2, 1)\n");
exit (1);
}
/* case x < y */
mpfr_set_ui (x, 1, GMP_RNDN);
mpfr_set_ui (y, 2, GMP_RNDN);
mpfr_dim (z, x, y, GMP_RNDN);
if (mpfr_cmp_ui (z, 0))
{
printf ("Error in mpfr_dim (1, 2)\n");
exit (1);
}
mpfr_clear (x);
mpfr_clear (y);
mpfr_clear (z);
tests_end_mpfr ();
return 0;
}
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