#!/usr/local/bin/tcc -run
#include <stdio.h>

main()
{
    int         i;      
    double      e;      /* The machine epsilon */

    e = 1.0;        

    for (i = 0; 1.0 + e = 1.0; i++) {
        e /= 2.0;
    }

    printf("machine epsilon = (%d)\n", 2*e);
}