Function std::intrinsics::fsub_fast

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

🔬 This is a nightly-only experimental API. (core_intrinsics #0)

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

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