Function get_mid

pub fn get_mid<T>(a: T, b: T) -> T
where
    T: Add<Output = T> + Sub<Output = T> + Div<Output = T> + Mul<Output = T> + Copy + From<u8>,

Returns the average of two numbers; works with at least all integral and floating point types

assert_eq!(get_mid(0,        10),       5);
assert_eq!(get_mid(0.0,      10.0),     5.0);
assert_eq!(get_mid(-10.0,    10.0),     0.0);
assert_eq!(get_mid(i16::MIN, i16::MAX), -1);
assert_eq!(get_mid(u8::MIN,  u8::MAX),  127);

assert!(get_mid(f32::NAN, f32::NAN).is_nan());
assert!(get_mid(f32::NEG_INFINITY, f32::INFINITY).is_nan());