#include "std/io.toc";

Point ::= struct {
	x, y: float;
}

sqrt ::= fn(x: float) a := x/2 {
	q ::= x;
	y ::= a;
	for _ := 0..20 {
		a = (x + a * a) / (2 * a);
	}
}

normalize ::= fn(p: &Point) {
	use p;
	sqdist := x * x + y * y;
	one_over_dist := 1/sqrt(sqdist);
	x *= one_over_dist;
	y *= one_over_dist;
}

printf ::= #foreign("printf", "libc.so.6") fn(#C &"const char", #C ..);

main ::= fn() {
	p: Point;
	use p;
	x = 10;
	y = 20;
	normalize(&p);
	fmt := "%f %f\n\0";
	printf(&fmt[0], p.x, p.y);
}