Function `__shsub16`

pub unsafe fn __shsub16(a: int16x2_t, b: int16x2_t) -> int16x2_t

Signed halving parallel halfword-wise subtraction.

Returns the 16-bit signed equivalent of

res[0] = (a[0] - b[0]) / 2 res[1] = (a[1] - b[1]) / 2