On Wednesday, 17 February 2016 at 18:26:47 UTC, Basile B. wrote:
Anyway, not good for phobos, why? When looking for documentation yesterday night I've landed on a post by Walter who explained that the library for a system programming language shouldn't be specific to an architecture.
While I don't know about the post you're talking about, I don't think what Walter says applies to internal version blocks in a function. You could make it so on AMD lround and friends are much faster by using those ASM routines. Also, std.math is already chock full of architecture specific code.