source: scripts/fetch/eglibc/2.10.1/25-ldbl-nexttowardf.patch@ dda2263

clfs-3.0.0-systemd systemd
Last change on this file since dda2263 was b17b911f, checked in by jim <clfs@…>, 15 years ago

Updated eglibc fetch script.

  • Property mode set to 100644
File size: 1.8 KB
RevLine 
[b17b911f]1this change was made to generic __nexttowardf, but not the long double version
2
32008-05-05 Aurelien Jarno <aurelien@aurel32.net>
4
5 * sysdeps/ieee754/ldbl-128/s_nexttowardf.c: Include float.h.
6 (__nexttowardf): Use math_opt_barrier and
7 math_force_eval macros. If FLT_EVAL_METHOD is not 0, force
8 x to float using asm.
9
10---
11 sysdeps/ieee754/ldbl-128/s_nexttowardf.c | 26 ++++++++++++++++----------
12 1 file changed, 16 insertions(+), 10 deletions(-)
13
14--- a/sysdeps/ieee754/ldbl-128/s_nexttowardf.c
15+++ b/sysdeps/ieee754/ldbl-128/s_nexttowardf.c
16@@ -19,7 +19,8 @@
17 #endif
18
19 #include "math.h"
20-#include "math_private.h"
21+#include <math_private.h>
22+#include <float.h>
23
24 #ifdef __STDC__
25 float __nexttowardf(float x, long double y)
26@@ -44,10 +45,12 @@
27 return x+y;
28 if((long double) x==y) return y; /* x=y, return y */
29 if(ix==0) { /* x == 0 */
30- float x2;
31+ float u;
32 SET_FLOAT_WORD(x,(u_int32_t)((hy>>32)&0x80000000)|1);/* return +-minsub*/
33- x2 = x*x;
34- if(x2==x) return x2; else return x; /* raise underflow flag */
35+ u = math_opt_barrier (x);
36+ u = u * u;
37+ math_force_eval (u); /* raise underflow flag */
38+ return x;
39 }
40 if(hx>=0) { /* x > 0 */
41 if(hy<0||(ix>>23)>(iy>>48)-0x3f80
42@@ -67,13 +70,16 @@
43 }
44 }
45 hy = hx&0x7f800000;
46- if(hy>=0x7f800000) return x+x; /* overflow */
47+ if(hy>=0x7f800000) {
48+ x = x+x; /* overflow */
49+ if (FLT_EVAL_METHOD != 0)
50+ /* Force conversion to float. */
51+ asm ("" : "+m"(x));
52+ return x;
53+ }
54 if(hy<0x00800000) { /* underflow */
55- float x2 = x*x;
56- if(x2!=x) { /* raise underflow flag */
57- SET_FLOAT_WORD(x2,hx);
58- return x2;
59- }
60+ float u = x*x;
61+ math_force_eval (u); /* raise underflow flag */
62 }
63 SET_FLOAT_WORD(x,hx);
64 return x;
65
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