Java中float和double的包含范围是多少? [英] What is the inclusive range of float and double in Java?

问题描述

Java 中 float 和 double 的包含范围是多少?

What is the inclusive range of float and double in Java?

为什么不建议在精度至关重要的任何地方使用 float 或 double ?

Why are you not recommended to use float or double for anything where precision is critical?

推荐答案

Java 的 Double 类的成员包含该类型的最小值和最大值.

Java's Double class has members containing the Min and Max value for the type.

2^-1074 <= x <= (2-2^-52)·2^1023 // where x is the double.

查看 Double 的 Min_VALUE 和 MAX_VALUE 静态最终成员.

Check out the Min_VALUE and MAX_VALUE static final members of Double.

(一些)人们会建议不要在精度和精度至关重要的事情上使用浮点类型，因为舍入误差可能会以可测量的(小)量影响计算.

(some)People will suggest against using floating point types for things where accuracy and precision are critical because rounding errors can throw off calculations by measurable (small) amounts.

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