Re: [Qemu-ppc] [Qemu-devel] Help with softfloat.c code

[Peter Maydell]

On 17 September 2018 at 18:56, Programmingkid <address@hidden> wrote:
>
>> On Sep 17, 2018, at 1:52 PM, Peter Maydell <address@hidden> wrote:
>>
>> On 17 September 2018 at 18:48, Programmingkid <address@hidden> wrote:
>>> What I hope to do is implement a PowerPC CPU flag that indicates if an 
>>> rounded result is inexact.
>>
>> How is this different from the float_flag_inexact flag that softfloat already
>> supports ?
>
> Sorry I meant to say if a rounded result is different from the intermediate 
> result. This is what the FPSCR[FR] flag indicates on the PowerPC.

Looking at the PPC spec that seems to be "inexact but not overflow" so you
should be able to calculate it via suitable handling of our existing
float flags.

thanks
-- PMM