原文:http://blog.csdn.net/lixiang0522/article/details/7557851
public class MathDemo {
public static void main(String args[]){
System.out.println(Math.abs(-10.4));
System.out.println(Math.abs(10.1));
System.out.println(Math.ceil(-10.1));
System.out.println(Math.ceil(10.7));
System.out.println(Math.ceil(-0.7));
System.out.println(Math.ceil(0.0));
System.out.println(Math.ceil(-0.0));
System.out.println(Math.floor(-10.1));
System.out.println(Math.floor(10.7));
System.out.println(Math.floor(-0.7));
System.out.println(Math.floor(0.0));
System.out.println(Math.floor(-0.0));
System.out.println(Math.max(-10.1, -10));
System.out.println(Math.max(10.7, 10));
System.out.println(Math.max(0.0, -0.0));
System.out.println(Math.random());
System.out.println(Math.random());
System.out.println(Math.rint(10.1));
System.out.println(Math.rint(10.7));
System.out.println(Math.rint(11.5));
System.out.println(Math.rint(10.5));
System.out.println(Math.rint(10.51));
System.out.println(Math.rint(-10.5));
System.out.println(Math.rint(-11.5));
System.out.println(Math.rint(-10.51));
System.out.println(Math.rint(-10.6));
System.out.println(Math.rint(-10.2));
System.out.println(Math.round(10.1));
System.out.println(Math.round(10.7));
System.out.println(Math.round(10.5));
System.out.println(Math.round(10.51));
System.out.println(Math.round(-10.5));
System.out.println(Math.round(-10.51));
System.out.println(Math.round(-10.6));
System.out.println(Math.round(-10.2));
}
}
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