Re: [PATCH][GCC13?] RISC-V: Replace `smin'/`smax' RTL patterns with `fmin'/`fmax'

[Maciej W. Rozycki]

On Wed, 26 Jan 2022, Joseph Myers wrote:

> fmin and fmax:
> 
> * Treat quiet NaN as missing data and return the other argument (if a 
> number).
> 
> * Treat signaling NaN like most functions (raise invalid, return quiet 
> NaN).
> 
> fminimum and fmaximum:
> 
> * Treat quiet NaN like most functions (return quiet NaN, no exceptions 
> raised unless the other argument is signaling NaN).
> 
> * Treat signaling NaN like most functions (raise invalid, return quiet 
> NaN).
> 
> fminimum_num and fmaximum_num:
> 
> * Treat both quiet and signaling NaN as missing data and return the other 
> argument (if a number).  "invalid" is still raised if one argument is a 
> signaling NaN (contrary to the normal rule that raising "invalid" means 
> also returning a quiet NaN).

 Thanks!

  Maciej