[Beignet] [PATCH] libocl: powr(x<0, y) should return NAN.

[Zhigang Gong]

Just as we discussed offline, non-strict mode will not ensure compliance for
all the corner cases. So Let's just ignore this patch for the non-strict mode.

Thanks for the patch.

On Tue, Jan 06, 2015 at 10:50:40AM +0800, Ruiling Song wrote:
> Signed-off-by: Ruiling Song <ruiling.song at intel.com>
> ---
>  backend/src/libocl/tmpl/ocl_math.tmpl.cl |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/backend/src/libocl/tmpl/ocl_math.tmpl.cl b/backend/src/libocl/tmpl/ocl_math.tmpl.cl
> index 3f296e7..ed26b3c 100644
> --- a/backend/src/libocl/tmpl/ocl_math.tmpl.cl
> +++ b/backend/src/libocl/tmpl/ocl_math.tmpl.cl
> @@ -3508,7 +3508,7 @@ OVERLOADABLE float powr(float x, float y) {
>    unsigned int hx, sx, hy, sy;
>  
>    if (__ocl_math_fastpath_flag)
> -    return __gen_ocl_pow(x,y);
> +    return x < 0.0f ? NAN : __gen_ocl_pow(x,y);
>    else {
>      if (isnan(x) || isnan(y)) return NAN;
>      GEN_OCL_GET_FLOAT_WORD(hx,x);
> -- 
> 1.7.10.4
> 
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