extern void abort (void); typedef short __v2hi __attribute ((vector_size(4))); typedef __v2hi fract2x16; typedef short fract16; int main () { fract2x16 a, b, t; fract16 t1, t2; a = __builtin_bfin_compose_2x16 (0xd000, 0x8000); b = __builtin_bfin_compose_2x16 (0x1000, 0x5000); t = __builtin_bfin_dspaddsubsat (a, b); t1 = __builtin_bfin_extract_hi (t); t2 = __builtin_bfin_extract_lo (t); if (t1 != 0xffffe000 || t2 != 0xffff8000) abort (); return 0; }