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/* Test file for mpfr_cmp_ui and mpfr_cmp_si.
Copyright 1999, 2001, 2002, 2003, 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;
unsigned long i;
long s;
int c;
tests_start_mpfr ();
mpfr_init(x);
/* tests for cmp_ui */
mpfr_set_ui (x, 3, GMP_RNDZ);
if ((mpfr_cmp_ui) (x, i = 3) != 0)
{
printf ("Error in mpfr_cmp_ui(3.0, 3)\n");
exit (1);
}
if (mpfr_cmp_ui (x, i = 2) <= 0)
{
printf ("Error in mpfr_cmp_ui(3.0,2)\n");
exit (1);
}
if (mpfr_cmp_ui (x, i = 4) >= 0)
{
printf ("Error in mpfr_cmp_ui(3.0,4)\n");
exit (1);
}
mpfr_set_ui (x, 0, GMP_RNDZ);
mpfr_neg (x, x, GMP_RNDZ);
if (mpfr_cmp_ui (x, i = 0))
{
printf ("Error in mpfr_cmp_ui(0.0,0)\n");
exit (1);
}
mpfr_set_ui (x, 1, GMP_RNDZ);
if (mpfr_cmp_ui (x, i = 0) == 0)
{
printf ("Error in mpfr_cmp_ui(1.0,0)\n");
exit (1);
}
mpfr_set_ui (x, 0, GMP_RNDN);
mpfr_ui_div (x, 1, x, GMP_RNDU);
if (mpfr_cmp_ui (x, 0) == 0)
{
printf ("Error in mpfr_cmp_ui (Inf, 0)\n");
exit (1);
}
mpfr_set_si (x, -1, GMP_RNDN);
MPFR_ASSERTN(mpfr_cmp_ui (x, 1) < 0);
MPFR_ASSERTN(mpfr_cmp_ui (x, 0) < 0);
mpfr_set_ui (x, 1, GMP_RNDN);
MPFR_ASSERTN(mpfr_cmp_ui (x, 0) > 0);
/* tests for cmp_si */
(mpfr_set_si) (x, -3, GMP_RNDZ);
if ((mpfr_cmp_si) (x, s = -3) != 0)
{
printf ("Error in mpfr_cmp_si(-3.0,-3)\n");
exit (1);
}
if (mpfr_cmp_si (x, s = -4) <= 0)
{
printf ("Error in mpfr_cmp_si(-3.0,-4)\n");
exit (1);
}
if (mpfr_cmp_si (x, s = 1) >= 0)
{
printf ("Error in mpfr_cmp_si(-3.0,1)\n");
exit (1);
}
/* case b=0 */
mpfr_set_ui (x, 0, GMP_RNDZ);
MPFR_ASSERTN(mpfr_cmp_si (x, 0) == 0);
MPFR_ASSERTN(mpfr_cmp_si (x, 1) < 0);
MPFR_ASSERTN(mpfr_cmp_si (x, -1) > 0);
/* case i=0 */
mpfr_set_ui (x, 1, GMP_RNDZ);
MPFR_ASSERTN(mpfr_cmp_si (x, 0) > 0);
mpfr_set_ui (x, 0, GMP_RNDZ);
MPFR_ASSERTN(mpfr_cmp_si (x, 0) == 0);
mpfr_neg (x, x, GMP_RNDZ);
MPFR_ASSERTN(mpfr_cmp_si (x, 0) == 0);
mpfr_set_si (x, -1, GMP_RNDZ);
MPFR_ASSERTN(mpfr_cmp_si (x, 0) < 0);
/* case large x */
mpfr_set_str_binary (x, "1E100");
MPFR_ASSERTN(mpfr_cmp_si (x, 0) > 0);
MPFR_ASSERTN(mpfr_cmp_si (x, 1) > 0);
MPFR_ASSERTN(mpfr_cmp_si (x, -1) > 0);
mpfr_set_str_binary (x, "-1E100");
MPFR_ASSERTN(mpfr_cmp_si (x, 0) < 0);
MPFR_ASSERTN(mpfr_cmp_si (x, 1) < 0);
MPFR_ASSERTN(mpfr_cmp_si (x, -1) < 0);
/* corner case */
mpfr_set_ui (x, 1, GMP_RNDZ);
mpfr_mul_2exp (x, x, BITS_PER_MP_LIMB - 1, GMP_RNDZ);
/* now EXP(x)=BITS_PER_MP_LIMB */
MPFR_ASSERTN(mpfr_cmp_si (x, 1) > 0);
/* Check NAN */
mpfr_set_nan (x);
mpfr_clear_erangeflag ();
c = mpfr_cmp_ui (x, 12);
if (c != 0 || !mpfr_erangeflag_p () )
{
printf ("NAN error (1)\n");
exit (1);
}
mpfr_clear_erangeflag ();
c = mpfr_cmp_si (x, -12);
if (c != 0 || !mpfr_erangeflag_p () )
{
printf ("NAN error (2)\n");
exit (1);
}
mpfr_clear (x);
tests_end_mpfr ();
return 0;
}
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