From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Sun, 24 Jul 2005 14:33:17 +0000 (+0000)
Subject: fscale fix (bug noticed by Kuwanger, fix by malc)
X-Git-Tag: release_0_7_1~7
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=57e4c06ed749e14c7c183996883dee27c23a0ade;p=thirdparty%2Fqemu.git

fscale fix (bug noticed by Kuwanger, fix by malc)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1528 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/target-i386/exec.h b/target-i386/exec.h
index a3bbea9999b..b1145017d52 100644
--- a/target-i386/exec.h
+++ b/target-i386/exec.h
@@ -337,6 +337,7 @@ static inline void stfl(target_ulong ptr, float v)
 #define atan2 atan2l
 #define floor floorl
 #define ceil ceill
+#define ldexp ldexpl
 #else
 #define floatx_to_int32 float64_to_int32
 #define floatx_to_int64 float64_to_int64
diff --git a/target-i386/helper.c b/target-i386/helper.c
index c83dbf21909..01b663f3819 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -2888,11 +2888,7 @@ void helper_frndint(void)
 
 void helper_fscale(void)
 {
-    CPU86_LDouble fpsrcop, fptemp;
-
-    fpsrcop = 2.0;
-    fptemp = pow(fpsrcop,ST1);
-    ST0 *= fptemp;
+    ST0 = ldexp (ST0, (int)(ST1)); 
 }
 
 void helper_fsin(void)