calc_mp(unsigned mod)1 unsigned calc_mp(unsigned mod)
2 {
3       unsigned a,b,c;
4       c=-1;
5       a=c/mod;
6       b=0-a*mod;
7       if (b > mod) { a += 1; b-=mod; }
8       return b;
9 }
10 
main(int argc,char * argv[])11 int main(int argc, char *argv[])
12 {
13       unsigned x = 1234;
14       unsigned y = calc_mp(x);
15 
16       if ((sizeof (y) == 4 && y != 680)
17 	  || (sizeof (y) == 2 && y != 134))
18 	abort ();
19       exit (0);
20 }
21 
22 
23