Synopsis

int8x4 __sadd8(int8x4 val1,
               int8x4 val2);

Description

__sadd8 inserts a SADD8 instruction. __sadd8 returns the 8-bit signed equivalent of

• res[0] = val1[0] + val2[0]
• res[1] = val1[1] + val2[1]
• res[2] = val1[2] + val2[2]
• res[3] = val1[3] + val2[3]
  
  where [0] is the lower 8 bits and [3] is the upper 8 bits. The GE bits of the APSR are set.