1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
Copyright 2005-2009 Free Software Foundation, Inc.
Contributed by Patrick Pelissier, INRIA.
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 3 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.LESSER. If not, see
http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#include <stdio.h>
#include <stdlib.h>
#ifndef __MPFR_H
# define NEED_MAIN
# include "gmp.h"
# include "mpfr.h"
#endif
#define fp_t mpfr_t
#define fp_set_fr(dest,src) mpfr_set (dest, src, GMP_RNDN)
#define MAX_PREC 10000
#define BASE 16
void gnumb_read (const char *filename, fp_t *dest, int n)
{
mpfr_t x;
int i;
FILE *f = fopen(filename, "r");
if (!f) {printf ("File not found: %s\n", filename); exit (1);}
mpfr_init2 (x, MAX_PREC);
for (i = 0 ; i < n ; i++)
{
if (mpfr_inp_str (x, f, 16, GMP_RNDN) == 0)
{
printf ("Error reading entry %d/%d\n", i, n);
mpfr_clear (x);
fclose (f);
exit (2);
}
fp_set_fr (*dest++, x);
}
mpfr_clear (x);
fclose (f);
}
void gnumb_generate (const char *filename, int n, unsigned long seed)
{
mpfr_t x;
gmp_randstate_t state;
int i;
FILE *f;
f = fopen (filename, "w");
if (!f) {printf ("Can't create file: %s\n", filename); exit (1);}
mpfr_init2 (x, MAX_PREC);
gmp_randinit_lc_2exp_size (state, 128);
gmp_randseed_ui (state, seed);
for (i = 0 ; i < n ; i++)
{
mpfr_urandomb (x, state);
if ((i & 2) == 0)
mpfr_mul_2si (x, x, (rand()%(2*GMP_NUMB_BITS))-GMP_NUMB_BITS,
GMP_RNDN);
mpfr_out_str (f, 16, 0, x, GMP_RNDN);
fputc ('\n', f);
}
gmp_randclear(state);
mpfr_clear (x);
fclose (f);
}
#ifdef NEED_MAIN
int main (int argc, char *argv[])
{
const char *filename = "float.data";
int num = 1100;
unsigned long seed = 12345679;
if (argc >= 2)
filename = argv[1];
if (argc >= 3)
num = atoi (argv[2]);
if (argc >= 4)
seed = atol (argv[3]);
gnumb_generate (filename, num, seed);
return 0;
}
#endif
|
