Function `__usad8`

pub unsafe fn __usad8(a: int8x4_t, b: int8x4_t) -> u32

Sum of 8-bit absolute differences.

Returns the 8-bit unsigned equivalent of

res = abs(a[0] - b[0]) + abs(a[1] - b[1]) +
(a[2] - b[2]) + (a[3] - b[3])