[adgjlsfhk1]

That's not what the parent meant. The parent meant that there are ways of generating fma instructions without using fast-math. Emulating an fma instruction is almost always a bad idea (I should know I've written fma-emulation before. It sucks)

[dahart]

Oh, my mistake, thanks. Yes you can use FMA instructions without the fast-math compiler flag for sure. Emulation being a bad idea is the impression I got; I’m glad to hear the confirmation from experience.