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/* Test file for mpfr_check.
Copyright 2003-2004, 2006-2021 Free Software Foundation, Inc.
Contributed by the AriC and Caramba projects, INRIA.
This file is part of the GNU MPFR Library.
The GNU 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 3 of the License, or (at your
option) any later version.
The GNU 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 GNU MPFR Library; see the file COPYING.LESSER. If not, see
https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#include "mpfr-test.h"
#define PRINT_ERROR(s) \
(printf ("mpfr_check failed " s " Prec=%lu\n", (unsigned long) 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))
PRINT_ERROR ("for init");
/* Check special cases */
MPFR_SET_NAN (a);
if (!mpfr_check (a))
PRINT_ERROR ("for nan");
MPFR_SET_POS (a);
MPFR_SET_INF (a);
if (!mpfr_check (a))
PRINT_ERROR ("for inf");
MPFR_SET_ZERO (a);
if (!mpfr_check (a))
PRINT_ERROR ("for zero");
MPFR_EXP (a) = MPFR_EXP_MIN;
if (mpfr_check (a))
PRINT_ERROR ("for EXP = MPFR_EXP_MIN");
/* Check var */
mpfr_set_ui (a, 2, MPFR_RNDN);
if (!mpfr_check (a))
PRINT_ERROR ("for set_ui");
mpfr_clear_overflow ();
max = 1000; /* Allows max 2^1000 bits for the exponent */
while (!mpfr_overflow_p () && max > 0)
{
/* this call to mpfr_mul with identical arguments is intentional,
and should not be replaced by mpfr_sqr */
mpfr_mul (a, a, a, MPFR_RNDN);
if (!mpfr_check (a))
PRINT_ERROR ("for mul");
max--;
}
if (max == 0)
PRINT_ERROR ("for overflow");
mpfr_set_ui (a, 2137, MPFR_RNDN);
/* Corrupt a and check for it */
MPFR_SIGN (a) = 2;
if (mpfr_check (a))
PRINT_ERROR ("sgn");
MPFR_SET_POS (a);
/* Check prec */
MPFR_PREC (a) = MPFR_PREC_MIN - 1;
if (mpfr_check (a)) PRINT_ERROR ("precmin");
#if MPFR_VERSION_MAJOR < 3
/* Disable the test with MPFR >= 3 since mpfr_prec_t is now signed.
The "if" below is sufficient, but the MPFR_PREC_MAX+1 generates
a warning with GCC 4.4.4 even though the test is always false. */
if ((mpfr_prec_t) 0 - 1 > 0)
{
MPFR_PREC (a) = MPFR_PREC_MAX + 1;
if (mpfr_check (a))
PRINT_ERROR ("precmax");
}
#endif
MPFR_PREC (a) = pr;
if (!mpfr_check (a))
PRINT_ERROR ("prec");
/* Check exponent */
MPFR_EXP (a) = MPFR_EXP_INVALID;
if (mpfr_check(a))
PRINT_ERROR ("exp invalid");
MPFR_EXP (a) = -MPFR_EXP_INVALID;
if (mpfr_check(a))
PRINT_ERROR ("-exp invalid");
MPFR_EXP(a) = 0;
if (!mpfr_check(a)) PRINT_ERROR ("exp 0");
/* Check Mantissa */
p = MPFR_MANT(a);
MPFR_MANT (a) = NULL;
if (mpfr_check (a))
PRINT_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))
PRINT_ERROR ("0 size");
MPFR_SET_ALLOC_SIZE (a, MP_SIZE_T_MIN);
if (mpfr_check (a)) PRINT_ERROR ("min size");
MPFR_SET_ALLOC_SIZE (a, MPFR_LIMB_SIZE (a) - 1);
if (mpfr_check (a))
PRINT_ERROR ("size < prec");
MPFR_SET_ALLOC_SIZE (a, s);
/* Check normal form */
tmp = MPFR_MANT (a)[0];
if ((pr % GMP_NUMB_BITS) != 0)
{
MPFR_MANT(a)[0] = MPFR_LIMB_MAX;
if (mpfr_check (a))
PRINT_ERROR ("last bits non 0");
}
MPFR_MANT(a)[0] = tmp;
MPFR_MANT(a)[MPFR_LIMB_SIZE(a)-1] &= MPFR_LIMB_MASK (GMP_NUMB_BITS-1);
if (mpfr_check (a))
PRINT_ERROR ("last bits non 0");
/* Final */
mpfr_set_ui (a, 2137, MPFR_RNDN);
if (!mpfr_check (a))
PRINT_ERROR ("after last set");
mpfr_clear (a);
if (mpfr_check (a))
PRINT_ERROR ("after clear");
}
tests_end_mpfr ();
return 0;
}
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