//ww:run
package main;
import math;
export fn main() i32 = {
	if (math.f64bits(1.0) != 0x3FF0000000000000u64) { return 1; };
	if (math.f64bits(0.0) != 0u64) { return 2; };
	let rt: f64 = math.f64frombits(math.f64bits(-2.5));
	if (rt != -2.5) { return 3; };
	if (math.f64frombits(0x4045000000000000u64) != 42.0) { return 4; };
	return 0;
};