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
|
---
PATCHES | 1 +
VERSION | 2 +-
asin.c | 12 +++++++-----
mpfr.h | 2 +-
tests/tasin.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
version.c | 2 +-
6 files changed, 55 insertions(+), 8 deletions(-)
--- /dev/null
+++ b/PATCHES
@@ -0,0 +1 @@
+asin_exprange
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.0.1
+3.0.1-p1
--- a/asin.c
+++ b/asin.c
@@ -63,11 +63,14 @@
compared = mpfr_cmp_ui (xp, 1);
+ MPFR_SAVE_EXPO_MARK (expo);
+
if (MPFR_UNLIKELY (compared >= 0))
{
mpfr_clear (xp);
if (compared > 0) /* asin(x) = NaN for |x| > 1 */
{
+ MPFR_SAVE_EXPO_FREE (expo);
MPFR_SET_NAN (asin);
MPFR_RET_NAN;
}
@@ -80,13 +83,11 @@
inexact = -mpfr_const_pi (asin, MPFR_INVERT_RND(rnd_mode));
MPFR_CHANGE_SIGN (asin);
}
- mpfr_div_2ui (asin, asin, 1, rnd_mode); /* May underflow */
- return inexact;
+ mpfr_div_2ui (asin, asin, 1, rnd_mode);
}
}
-
- MPFR_SAVE_EXPO_MARK (expo);
-
+ else
+ {
/* Compute exponent of 1 - ABS(x) */
mpfr_ui_sub (xp, 1, xp, MPFR_RNDD);
MPFR_ASSERTD (MPFR_GET_EXP (xp) <= 0);
@@ -115,6 +116,7 @@
inexact = mpfr_set (asin, xp, rnd_mode);
mpfr_clear (xp);
+ }
MPFR_SAVE_EXPO_FREE (expo);
return mpfr_check_range (asin, inexact, rnd_mode);
--- a/mpfr.h
+++ b/mpfr.h
@@ -27,7 +27,7 @@
#define MPFR_VERSION_MAJOR 3
#define MPFR_VERSION_MINOR 0
#define MPFR_VERSION_PATCHLEVEL 1
-#define MPFR_VERSION_STRING "3.0.1"
+#define MPFR_VERSION_STRING "3.0.1-p1"
/* Macros dealing with MPFR VERSION */
#define MPFR_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
--- a/tests/tasin.c
+++ b/tests/tasin.c
@@ -219,6 +219,49 @@
mpfr_clear (y);
}
+static void
+reduced_expo_range (void)
+{
+ mpfr_exp_t emin, emax;
+ mpfr_t x, y, ex_y;
+ int inex, ex_inex;
+ unsigned int flags, ex_flags;
+
+ emin = mpfr_get_emin ();
+ emax = mpfr_get_emax ();
+
+ mpfr_inits2 (4, x, y, ex_y, (mpfr_ptr) 0);
+ mpfr_set_str (x, "-0.1e1", 2, MPFR_RNDN);
+
+ mpfr_set_emin (1);
+ mpfr_set_emax (1);
+ mpfr_clear_flags ();
+ inex = mpfr_asin (y, x, MPFR_RNDA);
+ flags = __gmpfr_flags;
+ mpfr_set_emin (emin);
+ mpfr_set_emax (emax);
+
+ mpfr_set_str (ex_y, "-0.1101e1", 2, MPFR_RNDN);
+ ex_inex = -1;
+ ex_flags = MPFR_FLAGS_INEXACT;
+
+ if (SIGN (inex) != ex_inex || flags != ex_flags ||
+ ! mpfr_equal_p (y, ex_y))
+ {
+ printf ("Error in reduced_expo_range\non x = ");
+ mpfr_dump (x);
+ printf ("Expected y = ");
+ mpfr_out_str (stdout, 2, 0, ex_y, MPFR_RNDN);
+ printf ("\n inex = %d, flags = %u\n", ex_inex, ex_flags);
+ printf ("Got y = ");
+ mpfr_out_str (stdout, 2, 0, y, MPFR_RNDN);
+ printf ("\n inex = %d, flags = %u\n", SIGN (inex), flags);
+ exit (1);
+ }
+
+ mpfr_clears (x, y, ex_y, (mpfr_ptr) 0);
+}
+
int
main (void)
{
@@ -226,6 +269,7 @@
special ();
special_overflow ();
+ reduced_expo_range ();
test_generic (2, 100, 15);
--- a/version.c
+++ b/version.c
@@ -25,5 +25,5 @@
const char *
mpfr_get_version (void)
{
- return "3.0.1";
+ return "3.0.1-p1";
}
|
