//ww:run
package main;
import math;
export fn main() i32 = {
	let s: f64 = math.f64frombits(1u64);
	const r = math.normalizef64(s);
	if (r.1 != -52i64) { return 1; };
	const m: f64 = r.0;
	if (math.issubnormalf64(m)) { return 2; };
	if (m == 0.0) { return 3; };
	return 0;
};