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
|
Index: qemu/bsd/Makefile
@@ -16,7 +16,8 @@
${MACHINE_ARCH}/s_rintl.c \
${MACHINE_ARCH}/s_round.c \
${MACHINE_ARCH}/s_sinl.S \
- ${MACHINE_ARCH}/s_tanl.S
+ ${MACHINE_ARCH}/s_tanl.S \
+ ${MACHINE_ARCH}/s_ldexpl.c
OBJS= ${SRCS:R:S/$/.o/}
Index: qemu/bsd/i386/s_ldexpl.c
@@ -0,0 +1,21 @@
+#include <math.h>
+#include <errno.h>
+#include <sysdep.h>
+
+long double __ldexpl(long double x, int expn)
+{
+ long double res;
+ if (!isfinite (x) || x == 0.0L)
+ return x;
+
+ __asm__ ("fscale"
+ : "=t" (res)
+ : "0" (x), "u" ((long double) expn));
+
+ if (!isfinite (res) || res == 0.0L)
+ errno = ERANGE;
+
+ return res;
+}
+
+weak_alias(__ldexpl,ldexpl)
Index: qemu/bsd/amd64/s_ldexpl.c
@@ -0,0 +1,21 @@
+#include <math.h>
+#include <errno.h>
+#include <sysdep.h>
+
+long double __ldexpl(long double x, int expn)
+{
+ long double res;
+ if (!isfinite (x) || x == 0.0L)
+ return x;
+
+ __asm__ ("fscale"
+ : "=t" (res)
+ : "0" (x), "u" ((long double) expn));
+
+ if (!isfinite (res) || res == 0.0L)
+ errno = ERANGE;
+
+ return res;
+}
+
+weak_alias(__ldexpl,ldexpl)
Index: qemu/target-i386/helper.c
@@ -2886,6 +2886,8 @@
ST0 = floatx_round_to_int(ST0, &env->fp_status);
}
+long double ldexpl(long double, int);
+
void helper_fscale(void)
{
ST0 = ldexp (ST0, (int)(ST1));
|
