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/* Test file for mpfr_set_d and mpfr_get_d.
Copyright (C) 1999 Free Software Foundation.
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 Library General Public License as published by
the Free Software Foundation; either version 2 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 Library General Public
License for more details.
You should have received a copy of the GNU Library 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 <time.h>
#ifdef __mips
#include <sys/fpu.h>
#endif
#include "gmp.h"
#include "mpfr.h"
#include "mpfr-impl.h"
extern int isnan();
int
main(int argc, char **argv)
{
mpfr_t x,y,z; unsigned long k,n; double d, dd;
#ifdef __mips
/* to get denormalized numbers on IRIX64 */
union fpc_csr exp;
exp.fc_word = get_fpc_csr();
exp.fc_struct.flush = 0;
set_fpc_csr(exp.fc_word);
#endif
mpfr_init(x);
mpfr_init2(z, 32);
mpfr_set_d(z, 1.0, 0);
if (mpfr_get_d(z) != 1.0) {
mpfr_print_raw(z); putchar('\n');
printf("Error: 1.0 != 1.0\n"); exit(1);
}
mpfr_set_prec(x, 53); mpfr_init2(y, 53);
mpfr_set_d(x, d=-1.08007920352320089721e+150, 0);
if (mpfr_get_d(x) != d) {
mpfr_print_raw(x); putchar('\n');
printf("Error: get_d o set_d <> identity for d = %1.20e %1.20e\n",d,
mpfr_get_d(x)); exit(1);
}
srand48(time(NULL));
mpfr_set_d(x, 8.06294740693074521573e-310, 0);
d = -6.72658901114033715233e-165;
mpfr_set_d(x, d, 0);
if (d != mpfr_get_d(x)) {
mpfr_print_raw(x); putchar('\n');
printf("Error: get_d o set_d <> identity for d = %1.20e %1.20e\n",d,
mpfr_get_d(x)); exit(1);
}
n = (argc==1) ? 1000000 : atoi(argv[1]);
for (k = 1; k <= n; k++)
{
d = drand();
mpfr_set_d(x, d, 0);
dd = mpfr_get_d(x);
if (d != dd && (!isnan(d) || !isnan(dd)))
{
fprintf(stderr,
"Mismatch on : %1.18g != %1.18g\n", d, mpfr_get_d(x));
mpfr_print_raw(x); putchar('\n');
exit(1);
}
}
mpfr_clear(x); mpfr_clear(y); mpfr_clear(z);
return 0;
}
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