Re: [Qemu-devel] [PATCH 1/4] softfloat: Add float32_is_zero_or_denormal() function

[Aurelien Jarno]

On Fri, Jan 07, 2011 at 09:26:24AM +0000, Peter Maydell wrote:
> Add a utility function to softfloat to test whether a float32
> is zero or denormal.
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  fpu/softfloat.h |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)

Reviewed-by: Aurelien Jarno <address@hidden>

> diff --git a/fpu/softfloat.h b/fpu/softfloat.h
> index 15052cc..1acf7af 100644
> --- a/fpu/softfloat.h
> +++ b/fpu/softfloat.h
> @@ -336,6 +336,11 @@ INLINE int float32_is_any_nan(float32 a)
>      return ((float32_val(a) & ~(1 << 31)) > 0x7f800000UL);
>  }
>  
> +INLINE int float32_is_zero_or_denormal(float32 a)
> +{
> +    return (float32_val(a) & 0x7f800000) == 0;
> +}
> +
>  #define float32_zero make_float32(0)
>  #define float32_one make_float32(0x3f800000)
>  #define float32_ln2 make_float32(0x3f317218)
> -- 
> 1.6.3.3
> 
> 
> 

-- 
Aurelien Jarno                          GPG: 1024D/F1BCDB73
address@hidden                 http://www.aurel32.net