Java 是否有任何东西可以表示每种数值数据类型的无穷大?它是如何实现的,以便我可以用它进行数学运算?
Does Java have anything to represent infinity for every numerical data type? How is it implemented such that I can do mathematical operations with it?
例如
int myInf = infinity; //However it is done
myInf + 5; //returns infinity
myInf*(-1); //returns negative infinity
我尝试过使用非常大的数字,但我想要一个合适的简单解决方案.
I have tried using very large numbers, but I want a proper, easy solution.
double
支持 Infinity
double
supports Infinity
double inf = Double.POSITIVE_INFINITY;
System.out.println(inf + 5);
System.out.println(inf - inf); // same as Double.NaN
System.out.println(inf * -1); // same as Double.NEGATIVE_INFINITY
打印
Infinity
NaN
-Infinity
注意:Infinity - Infinity
不是数字.
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