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Re: [Qemu-devel] [PATCH] fpu/softfloat.c: Remove pointless shift of alwa
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH] fpu/softfloat.c: Remove pointless shift of always-zero value |
Date: |
Mon, 1 Oct 2012 22:12:54 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Sep 24, 2012 at 05:28:35PM +0100, Peter Maydell wrote:
> In float16_to_float32, when returning an infinity, just pass zero
> as the mantissa argument to packFloat32(), rather than shifting
> a value which we know must be zero.
>
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> Spotted by the clang static analyzer. This brings this code into line with
> the other float-to-float conversion functions and was probably a harmless
> cut-n-paste error from the normal-return codepath.
>
> fpu/softfloat.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fpu/softfloat.c b/fpu/softfloat.c
> index b29256a..01a28ca 100644
> --- a/fpu/softfloat.c
> +++ b/fpu/softfloat.c
> @@ -3007,7 +3007,7 @@ float32 float16_to_float32(float16 a, flag ieee
> STATUS_PARAM)
> if (aSig) {
> return commonNaNToFloat32(float16ToCommonNaN(a STATUS_VAR)
> STATUS_VAR);
> }
> - return packFloat32(aSign, 0xff, aSig << 13);
> + return packFloat32(aSign, 0xff, 0);
> }
> if (aExp == 0) {
> int8 shiftCount;
Thanks, applied.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net
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