Synopsis

int16x2 __qsub16(int16x2 val1,
                 int16x2 val2);

Description

__qsub16 inserts a QSUB16 instruction. __qsub16 returns the 16-bit signed saturated equivalent of

• res[0] = val1[0] - val2[0]
• res[1] = val1[1] - val2[1]
  
  where [0] is the lower 16 bits and [1] is the upper 16 bits.