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
104
105
106
107
108
109
|
/* Test file for mpfr_add_ui
Copyright 2000, 2001, 2002, 2003, 2004 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 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 <stdio.h>
#include <stdlib.h>
#include <float.h>
#include "mpfr-test.h"
/* checks that x+y gives the right results with 53 bits of precision */
static void
check3 (const char *xs, unsigned long y, mp_rnd_t rnd_mode, const char *zs)
{
mpfr_t xx, zz;
mpfr_inits2 (53, xx, zz, NULL);
mpfr_set_str1 (xx, xs);
mpfr_add_ui (zz, xx, y, rnd_mode);
if (mpfr_cmp_str1(zz, zs) )
{
printf ("expected sum is %s, got ",zs);
mpfr_out_str(stdout, 10, 0, zz, GMP_RNDN);
printf ("\nmpfr_add_ui failed for x=%s y=%lu with rnd_mode=%s\n",
xs, y, mpfr_print_rnd_mode(rnd_mode));
exit (1);
}
mpfr_clears (xx, zz, NULL);
}
static void
special (void)
{
mpfr_t x, y;
mpfr_init2 (x, 63);
mpfr_init2 (y, 63);
mpfr_set_str_binary (x, "0.110100000000000001110001110010111111000000000101100011100100011");
mpfr_add_ui (y, x, 1, GMP_RNDD);
mpfr_clear (x);
mpfr_clear (y);
}
static void
check_nans (void)
{
mpfr_t x, y;
mpfr_init2 (x, 123L);
mpfr_init2 (y, 123L);
/* nan + 2394875 == nan */
mpfr_set_nan (x);
mpfr_add_ui (y, x, 2394875L, GMP_RNDN);
MPFR_ASSERTN (mpfr_nan_p (y));
/* +inf + 2394875 == +inf */
mpfr_set_inf (x, 1);
mpfr_add_ui (y, x, 2394875L, GMP_RNDN);
MPFR_ASSERTN (mpfr_inf_p (y));
MPFR_ASSERTN (mpfr_sgn (y) > 0);
/* -inf + 2394875 == -inf */
mpfr_set_inf (x, -1);
mpfr_add_ui (y, x, 2394875L, GMP_RNDN);
MPFR_ASSERTN (mpfr_inf_p (y));
MPFR_ASSERTN (mpfr_sgn (y) < 0);
mpfr_clear (x);
mpfr_clear (y);
}
int
main (int argc, char *argv[])
{
tests_start_mpfr ();
check_nans ();
special ();
check3 ("-1.716113812768534e-140", 1271212614, GMP_RNDZ,
"1.27121261399999976e9");
check3 ("1.22191250737771397120e+20", 948002822, GMP_RNDN,
"122191250738719408128.0");
check3 ("-6.72658901114033715233e-165", 2000878121, GMP_RNDZ,
"2.0008781209999997615e9");
check3 ("-2.0769715792901673e-5", 880524, GMP_RNDN,
"8.8052399997923023e5");
tests_end_mpfr ();
return 0;
}
|
