Matlab取整函数有: fix, floor, ceil, round.取整函数在编程时有很大用处.一.取整函数1.向零取整(截尾取整)fix-向零取整(Round towards zero):>> fix(3.6) ans = 32.向负无穷取整(不超过x 的最大整数-高斯取整)floor-向负无穷取整(Round towards minus infinity):>> floor(-3.6) ans = -43.向正无穷取整(大于x 的最小整数)ceil-向
function f1(type,num1) { switch(type) { case 'floor': return Math.floor(num1);//取整或下舍入 break; case 'round': return Math.round(num1);//四舍五入 break; case 'ceil': return Math.ceil(num1);//上舍入 break; case 'abs': return Math.abs(num1);//取绝对值 break; } } fun
向上取整 var a = 23.2325236 var abc = Math.ceil(a); //注意:Math.ceil(a)不要单独写一行,否则向上取整失败 abc = 24; 向下取整 var a = 23.2325236 var abc = Math.floor(a)//注意: Math.floor(a) 不要单独写一行,否则向下取整失败 abc = 23; 四舍五入 Math.round(7/2);
import java.math.BigDecimal; public class TestGetInt { public static void main(String[] args) { double i = 2, j = 2.1, k = 2.5, m = 2.9; System.out.println("舍掉小数取整:Math.floor(2)=" + ( System.out.println("舍掉小数取整:Math.floor(2.1)=" + ( Sy