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
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/* Test file for mpfr_add1sp.
Copyright 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by the Arenaire and Cacao 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 2.1 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.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301, USA. */
#include <stdio.h>
#include <stdlib.h>
#include "mpfr-test.h"
static void check_special (void);
static void check_random (mpfr_prec_t p);
static void
check_overflow (void)
{
mpfr_t x, y, z1, z2;
mp_exp_t emin, emax;
emin = mpfr_get_emin ();
emax = mpfr_get_emax ();
set_emin (-1021);
set_emax (1024);
mpfr_inits (x, y, z1, z2, (mpfr_ptr) 0);
mpfr_set_str1 (x, "8.00468257869324898448e+307");
mpfr_set_str1 (y, "7.44784712422708645156e+307");
mpfr_add1sp (z1, x, y, GMP_RNDN);
mpfr_add1 (z2, x, y, GMP_RNDN);
if (mpfr_cmp (z1, z2))
{
printf ("Overflow bug in add1sp.\n");
exit (1);
}
mpfr_clears (x, y, z1, z2, (mpfr_ptr) 0);
set_emin (emin);
set_emax (emax);
}
int
main (void)
{
mpfr_prec_t p;
tests_start_mpfr ();
check_special ();
for(p = 2 ; p < 200 ; p++)
check_random (p);
check_overflow ();
tests_end_mpfr ();
return 0;
}
#define STD_ERROR \
{\
printf("ERROR: for %s and p=%lu and i=%d:\nB=",\
mpfr_print_rnd_mode ((mp_rnd_t) r), p, i);\
mpfr_print_binary(b);\
printf("\nC="); mpfr_print_binary(c);\
printf("\nadd1 : "); mpfr_print_binary(a1);\
printf("\nadd1sp: "); mpfr_print_binary(a2);\
putchar('\n');\
exit(1);\
}
#define STD_ERROR2 \
{\
printf("ERROR: Wrong inexact flag for %s and p=%lu and i=%d:\nB=",\
mpfr_print_rnd_mode ((mp_rnd_t) r), p, i);\
mpfr_print_binary(b);\
printf("\nC="); mpfr_print_binary(c);\
printf("\nA="); mpfr_print_binary(a1);\
printf("\nAdd1: %d. Add1sp: %d\n", \
inexact1, inexact2); \
exit(1);\
}
#define SET_PREC(_p) \
{ \
p = _p; \
mpfr_set_prec(a1, _p); mpfr_set_prec(a2, _p); \
mpfr_set_prec(b, _p); mpfr_set_prec(c, _p); \
}
static void
check_random (mp_prec_t p)
{
mpfr_t a1,b,c,a2;
int r;
int i, inexact1, inexact2;
mpfr_inits2 (p, a1, b, c, a2, (mpfr_ptr) 0);
for (i = 0 ; i < 500 ; i++)
{
mpfr_urandomb (b, RANDS);
mpfr_urandomb (c, RANDS);
if (MPFR_IS_PURE_FP(b) && MPFR_IS_PURE_FP(c))
{
if (MPFR_GET_EXP(b) < MPFR_GET_EXP(c))
mpfr_swap(b, c);
if (MPFR_IS_PURE_FP(b) && MPFR_IS_PURE_FP(c))
for (r = 0 ; r < GMP_RND_MAX ; r++)
{
inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r);
inexact2 = mpfr_add1sp(a2, b, c, (mp_rnd_t) r);
if (mpfr_cmp(a1, a2))
STD_ERROR;
if (inexact1 != inexact2)
STD_ERROR2;
}
}
}
mpfr_clears (a1, a2, b, c, (mpfr_ptr) 0);
}
static void
check_special (void)
{
mpfr_t a1,a2,b,c;
int r;
mpfr_prec_t p;
int i = -1, inexact1, inexact2;
mpfr_inits (a1, a2, b, c, (mpfr_ptr) 0);
for (r = 0 ; r < GMP_RND_MAX ; r++)
{
SET_PREC(53);
mpfr_set_str1 (b, "1@100");
mpfr_set_str1 (c, "1@1");
inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r);
inexact2 = mpfr_add1sp(a2, b, c, (mp_rnd_t) r);
if (mpfr_cmp(a1, a2))
STD_ERROR;
if (inexact1 != inexact2)
STD_ERROR2;
mpfr_set_str_binary (b, "1E53");
mpfr_set_str_binary (c, "1E0");
inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r);
inexact2 = mpfr_add1sp(a2, b, c, (mp_rnd_t) r);
if (mpfr_cmp(a1, a2))
STD_ERROR;
if (inexact1 != inexact2)
STD_ERROR2;
}
mpfr_set_prec (c, 2);
mpfr_set_prec (a1, 2);
mpfr_set_prec (a2, 2);
mpfr_set_str_binary (c, "1.0e1");
mpfr_set_str_binary (a2, "1.1e-1");
mpfr_set_str_binary (a1, "0.11E2");
mpfr_add1sp (a2, c, a2, GMP_RNDN);
if (mpfr_cmp (a1, a2))
{
printf ("Regression reuse test failed!\n");
exit (1);
}
mpfr_clears (a1, a2, b, c, (mpfr_ptr) 0);
}
|
