sgn(2.3);sgn(-12.7);sgn(0)
round(1.5461);round(-1.5461)
ceil(43.5461);ceil(-43.5461)
floor(39.9531);floor(-39.9531)
trunc(23.827);trunc(-23.827)
sqrt(100);sqrt(52.23)
cbrt(1000);cbrt(52.23)
