📅  最后修改于: 2022-03-11 15:01:23.735000             🧑  作者: Mango
//standard round function, except round .5 down instead of up
function roundHalfDown(num) {
return -Math.round(-num);
}
roundHalfDown(1.5);// 1
roundHalfDown(1.6);// 2