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/* Test file for mpfr_out_str.
Copyright 1999, 2001, 2002 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 <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "gmp.h"
#include "mpfr.h"
#include "mpfr-test.h"
FILE *fout;
#define check(d,r,b) check4(d,r,b,53)
void check4 _PROTO((double, mp_rnd_t, int, int));
void check_large _PROTO((void));
void
check4(double d, mp_rnd_t rnd, int base, int prec)
{
mpfr_t x;
mpfr_init2(x, prec);
mpfr_set_d(x, d, rnd);
fprintf(fout, "%1.19e base %d rnd %d:\n ", d, base, rnd);
mpfr_out_str(fout, base, (base==2) ? prec : 0, x, rnd);
fputc('\n', fout);
mpfr_clear(x);
}
void
check_large (void)
{
mpfr_t x; mp_exp_t e; char *s;
mpfr_init(x);
mpfr_set_prec (x, 7);
mpfr_set_str_raw (x, "0.1010101E10");
s = mpfr_get_str (NULL, &e, 10, 2, x, GMP_RNDU);
free (s);
/* checks rounding of negative numbers */
mpfr_set_prec (x, 7);
mpfr_set_d (x, -11.5, GMP_RNDN);
s = mpfr_get_str (NULL, &e, 10, 2, x, GMP_RNDD);
if (strcmp (s, "-12"))
{
fprintf (stderr, "Error in mpfr_get_str for x=-11.5 and rnd=GMP_RNDD\n");
free (s);
mpfr_clear (x);
exit (1);
}
free (s);
s = mpfr_get_str (NULL, &e, 10, 2, x, GMP_RNDU);
if (strcmp (s, "-11"))
{
fprintf (stderr, "Error in mpfr_get_str for x=-11.5 and rnd=GMP_RNDU\n");
free (s);
mpfr_clear (x);
exit (1);
}
free (s);
/* bug found by Jean-Pierre Merlet, produced error in mpfr_get_str */
mpfr_set_prec (x, 128);
mpfr_set_str_raw (x, "0.10111001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011001100110011010E3");
s = mpfr_get_str (NULL, &e, 10, 0, x, GMP_RNDU);
free (s);
mpfr_set_prec (x, 381);
mpfr_set_str_raw (x, "0.111111111111111111111111111111111111111111111111111111111111111111101110110000100110011101101101001010111000101111000100100011110101010110101110100000010100001000110100000100011111001000010010000010001010111001011110000001110010111101100001111000101101100000010110000101100100000101010110010110001010100111001111100011100101100000100100111001100010010011110011011010110000001000010");
s = mpfr_get_str (NULL, &e, 10, 0, x, GMP_RNDD);
if (e != 0)
{
fprintf (stderr, "Error in mpfr_get_str for x=0.999999..., exponent is %d instead of 0\n", (int) e);
exit (1);
}
free (s);
mpfr_clear (x);
}
int
main (int argc, char *argv[])
{
int i,N=10000,r,p; double d;
check_large();
/* with no argument: prints to /dev/null,
tout_str N: prints N tests to stdout */
if (argc==1) fout=fopen("/dev/null", "w");
else { fout=stdout; N=atoi(argv[1]); }
check(-1.37247529013405550000e+15, GMP_RNDN, 7);
check(-1.5674376729569697500e+15, GMP_RNDN, 19);
check(-5.71262771772792640000e-79, GMP_RNDU, 16);
check(-0.0, GMP_RNDU, 7);
check(-4.5306392613572974756e-308, GMP_RNDN, 8);
check(-6.7265890111403371523e-165, GMP_RNDN, 4);
check(-1.3242553591261807653e+156, GMP_RNDN, 16);
check(-6.606499965302424244461355e233, GMP_RNDN, 10);
check4(1.0, GMP_RNDN, 10, 120);
check(1.0, GMP_RNDU, 10);
check(4.059650008e-83, GMP_RNDN, 10);
check(-7.4, GMP_RNDN, 10);
check(0.997, GMP_RNDN, 10);
check(-4.53063926135729747564e-308, GMP_RNDN, 10);
check(2.14478198760196000000e+16, GMP_RNDN, 10);
check(7.02293374921793516813e-84, GMP_RNDN, 10);
/* random tests */
srand(getpid());
for (i=0;i<N;i++)
{
do
{
d = drand();
} while (isnan(d));
r = rand() % 4;
p = 2 + rand() % 35;
check (d, r, p);
}
return 0;
}
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