1 #define bset(i,b) ((i & (1<<b))?1:0) 2 3 main() 4 { 5 int i; 6 7 printf ("u_char even_parity[] = {\n "); 8 for (i = 0; i < 0x80; i++) 9 { 10 unsigned char par = bset(i,0)+bset(i,1)+bset(i,2)+bset(i,3)+bset(i,4)+ 11 bset(i,5)+bset(i,6)+bset(i,7); 12 13 printf ("%2d, ", par & 1); 14 15 if ((i & 15) == 15) 16 printf ("\n "); 17 } 18 printf ("};\n"); 19 } 20