Function sub_inplace 

pub fn sub_inplace<T>(src1_dst: &mut [T], src2: &[T])
where
    T: Copy + Sub<T, Output = T>,

Subtracts all values in src2 from src1_dst element-wise and stores the results in src1_dst. All slices must have the same length.

Panics

This method panics if the slices have different lengths.