On Tue, 30 Jul 2019, Florian Weimer wrote: > * Martin Jambor: > > > as you might know, Tejas is our Google Summer of Code student working on > > adding built-in functions for some new math functions added in ISO/IEC > > TS 18661. > > > > His next step is to expand "functions rounding result to narrower type" > > (so fadd, fsub and possibly fmul and fdiv described in > > http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2314.pdf) into ISA > > instructions on targets that have such instructions. > > Sorry, this might be a silly question, but: How do you plan to recognize > that the fadd/fsub being called is indeed the one from the TS?
I expect it's the same as any other built-in function: compatible prototype plus appropriate options (-std=gnu*, or -std=c2x in future once we teach GCC that these functions are in C2x) that enable the built-in functions. -- Joseph S. Myers jos...@codesourcery.com
