public extern void TestIntrinsic()
{
point a ( 1, 2 );
print (a);
a.x = 3;
a.y = 4;
point b = a;
println ( b.x, b.y, b ) ;
if ( b == a ) b.y = 0;
println (a,b);
if ( b != a ) b.y = a.y;
println(a,b);
}