[jamesmishra]

I don't know if most Rust programmers would be happy with any fast and loose features making it into the official Rust compiler.

Besides, algorithms that benefit from -ffast-math can be implemented in C and with Rust bindings automatically generated.

This solution isn't exactly "simple", but it could help projects keep track of the expectations of correctness between different algorithm implementations.

[vlovich123]

Rust should have native ways to express this stuff. You don't want the answer to be "write this part of your problem domain in C because we can't do it in Rust".