//ww:run
package main;
import math;
fn zero() f64 = { return 0.0; };
export fn main() i32 = {
	if (math.absf64(-3.0) != 3.0) { return 1; };
	if (math.absf64(3.0) != 3.0) { return 2; };
	let nan: f64 = zero() / zero();
	if (!math.isnan(math.absf64(nan))) { return 3; };
	if (math.copysignf64(3.0, -1.0) != -3.0) { return 4; };
	if (math.copysignf64(-3.0, 1.0) != 3.0) { return 5; };
	if (math.copysignf64(3.0, 1.0) != 3.0) { return 6; };
	return 0;
};