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Re: [Qemu-devel] [PATCH v3 22/31] arm/helper.c: re-factor recpe and add


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH v3 22/31] arm/helper.c: re-factor recpe and add recepe_f16
Date: Fri, 23 Feb 2018 16:34:19 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 02/23/2018 07:36 AM, Alex Bennée wrote:
> It looks like the ARM ARM has simplified the pseudo code for the
> calculation which is done on a fixed point 9 bit integer maths. So
> while adding f16 we can also clean this up to be a little less heavy
> on the floating point and just return the fractional part and leave
> the calle's to do the final packing of the result.
> 
> Signed-off-by: Alex Bennée <address@hidden>
> 
> ---
> v3
>   - fix comment 2.0^-16
>   - f16_exp >= 29 (biased)
>   - remove confusing comment about fpst
> ---

Reviewed-by: Richard Henderson <address@hidden>


r~




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