Function fsub_fast 

pub unsafe fn fsub_fast<T: FloatPrimitive>(a: T, b: T) -> T

🔬This is a nightly-only experimental API. (core_intrinsics)

This item is validated for IEC 61508 (SIL 2) and ISO 26262 (ASIL B).

Float subtraction that allows optimizations based on algebraic rules. Requires that inputs and output of the operation are finite, causing UB otherwise.

This intrinsic does not have a stable counterpart.