Function idsp::overflowing_sub

pub fn overflowing_sub(y: i32, x: i32) -> (i32, i8)

Subtract y - x with signed overflow.

This is very similar to i32::overflowing_sub(y, x) except that the overflow indicator is not a boolean but the signum of the overflow. Additionally it’s typically faster.

Returns: A tuple containg the (wrapped) difference y - x and the signum of the overflow.