Function std::intrinsics::fmul_fast

pub unsafe extern "rust-intrinsic" fn fmul_fast<T>(a: T, b: T) -> T

Unstable (core_intrinsics)

: intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library

Float multiplication that allows optimizations based on algebraic rules. May assume inputs are finite.