Synopsis
int16x2 __shasx(int16x2 val1,
int16x2 val2);
Description
__shasx inserts a SHASX instruction. __shasx returns the 16-bit signed equivalent of
- res[0] = (val1[0] - val2[1])/2
- res[1] = (val1[1] + val2[0])/2
where [0] is the lower 16 bits and [1] is the upper 16 bits.