1 typedef _Complex double ar[]; f(ar * a,unsigned int n)2 int f(ar *a, unsigned int n) 3 { 4 unsigned int i; 5 for(i = 0; i< n; i++) 6 { 7 (*a)[i*4] = __real__ (*a)[(i+1)*4] + __real__ (*a)[i*4]; 8 } 9 } 10