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/* Test file for mpfr_check.
Copyright 2003, 2004, 2006 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., 51 Franklin Place, Fifth Floor, Boston,
MA 02110-1301, USA. */
#include <stdlib.h>
#include <stdio.h>
#include "mpfr-test.h"
#define ERROR(s) printf("mpfr_check failed " s " Prec=%lu\n", pr), exit(1)
int
main (void)
{
mpfr_t a;
mp_limb_t *p, tmp;
mp_size_t s;
mpfr_prec_t pr;
int max;
tests_start_mpfr ();
for(pr = MPFR_PREC_MIN ; pr < 500 ; pr++)
{
mpfr_init2 (a, pr);
if (!mpfr_check(a)) ERROR("for init");
/* Check special cases */
MPFR_SET_NAN(a);
if (!mpfr_check(a)) ERROR("for nan");
MPFR_SET_POS(a);
MPFR_SET_INF(a);
if (!mpfr_check(a)) ERROR("for inf");
MPFR_SET_ZERO(a);
if (!mpfr_check(a)) ERROR("for zero");
/* Check var */
mpfr_set_ui(a, 2, GMP_RNDN);
if (!mpfr_check(a)) ERROR("for set_ui");
mpfr_clear_overflow();
max = 1000; /* Allows max 2^1000 bits for the exponent */
while ((!mpfr_overflow_p()) && (max>0))
{
mpfr_mul(a, a, a, GMP_RNDN);
if (!mpfr_check(a)) ERROR("for mul");
max--;
}
if (max==0) ERROR("can't reach overflow");
mpfr_set_ui(a, 2137, GMP_RNDN);
/* Corrupt a and check for it */
MPFR_SIGN(a) = 2;
if (mpfr_check(a)) ERROR("sgn");
MPFR_SET_POS(a);
/* Check prec */
MPFR_PREC(a) = 1;
if (mpfr_check(a)) ERROR("precmin");
MPFR_PREC(a) = MPFR_PREC_MAX+1;
if (mpfr_check(a)) ERROR("precmax");
MPFR_PREC(a) = pr;
if (!mpfr_check(a)) ERROR("prec");
/* Check exponent */
MPFR_EXP(a) = MPFR_EXP_INVALID;
if (mpfr_check(a)) ERROR("exp invalid");
MPFR_EXP(a) = -MPFR_EXP_INVALID;
if (mpfr_check(a)) ERROR("-exp invalid");
MPFR_EXP(a) = 0;
if (!mpfr_check(a)) ERROR("exp 0");
/* Check Mantissa */
p = MPFR_MANT(a);
MPFR_MANT(a) = NULL;
if (mpfr_check(a)) ERROR("Mantissa Null Ptr");
MPFR_MANT(a) = p;
/* Check size */
s = MPFR_GET_ALLOC_SIZE(a);
MPFR_SET_ALLOC_SIZE(a, 0);
if (mpfr_check(a)) ERROR("0 size");
MPFR_SET_ALLOC_SIZE(a, MP_SIZE_T_MIN);
if (mpfr_check(a)) ERROR("min size");
MPFR_SET_ALLOC_SIZE(a, MPFR_LIMB_SIZE(a)-1 );
if (mpfr_check(a)) ERROR("size < prec");
MPFR_SET_ALLOC_SIZE(a, s);
/* Check normal form */
tmp = MPFR_MANT(a)[0];
if ((pr % BITS_PER_MP_LIMB) != 0)
{
MPFR_MANT(a)[0] = ~0;
if (mpfr_check(a)) ERROR("last bits non 0");
}
MPFR_MANT(a)[0] = tmp;
MPFR_MANT(a)[MPFR_LIMB_SIZE(a)-1] &= MPFR_LIMB_MASK (BITS_PER_MP_LIMB-1);
if (mpfr_check(a)) ERROR("last bits non 0");
/* Final */
mpfr_set_ui(a, 2137, GMP_RNDN);
if (!mpfr_check(a)) ERROR("after last set");
mpfr_clear (a);
if (mpfr_check(a)) ERROR("after clear");
}
tests_end_mpfr ();
return 0;
}
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