//ww:run
package main;
import math;
export fn main() i32 = {
	if (math.signf64(3.0) != 1i64) { return 1; };
	if (math.signf64(-3.0) != -1i64) { return 2; };
	if (math.signf64(0.0) != 1i64) { return 3; };
	if (!math.ispositivef64(3.0)) { return 4; };
	if (math.ispositivef64(-3.0)) { return 5; };
	if (!math.isnegativef64(-3.0)) { return 6; };
	if (math.isnegativef64(3.0)) { return 7; };
	return 0;
};