Function cichlid::math::nscale_u8x4

pub fn nscale_u8x4(
    int_1: &mut u8, 
    int_2: &mut u8, 
    int_3: &mut u8, 
    int_4: &mut u8, 
    scaler: u8
)

Inplace scaling for four u8's by the same value.