[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PATCH] rsqrte_f32: No need to copy sign bit.
From: |
Christophe Lyon |
Subject: |
[Qemu-devel] [PATCH] rsqrte_f32: No need to copy sign bit. |
Date: |
Mon, 3 Oct 2011 16:28:07 +0200 |
Indeed, the result is known to be always positive.
Signed-off-by: Christophe Lyon <address@hidden>
---
target-arm/helper.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/target-arm/helper.c b/target-arm/helper.c
index d3a3ba2..ff5456c 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -3039,8 +3039,7 @@ float32 HELPER(rsqrte_f32)(float32 a, CPUState *env)
val64 = float64_val(f64);
- val = ((val64 >> 63) & 0x80000000)
- | ((result_exp & 0xff) << 23)
+ val = ((result_exp & 0xff) << 23)
| ((val64 >> 29) & 0x7fffff);
return make_float32(val);
}
--
1.7.6.4
- [Qemu-devel] [PATCH] rsqrte_f32: No need to copy sign bit.,
Christophe Lyon <=