Re: [Qemu-devel] [PATCH v5 06/23] Softfloat support for IEEE 754-201x minimumNumber/maximumNumber

[Richard Henderson]

On 02/07/2018 05:28 PM, Michael Clark wrote:
> QEMU currently implements IEEE 754-2008 minNum/maxNum. This patch adds
> support for IEEE 754-201x minimumNumber/maximumNumber which is required
> by the RISC-V port.
> 
> minNum(x, y) is defined as
> - min(x, y) if neither is NaN
> - if one of x and y is a number and one is qNaN, return the number
> - if both are qNaN, or either is sNaN, return NaN
> 
> minimumNumber(x, y) is defined as
> - min(x, y) if neither is NaN
> - if one of x and y is a number and one is qNaN or sNaN, return the number
> - if both are NaN, return the number
> 
> Both functions signal the invalid exception on sNaN inputs.
> 
> Signed-off-by: Michael Clark <address@hidden>
> ---

Thanks for the description of the function.  We've got a reorg of softfloat
pending at the moment; I'd want to defer this patch until that set has landed.


r~