long double C++的范围是多少 [英] What is the range of the long double C++

问题描述

C++中long double的范围是多少?

What is the range of long double in C++?

推荐答案

#include

std::numeric_limits<long double>::min()
//...
std::numeric_limits<long double>::max()

long double 的定义是编译器&平台相关，它至少与 double 相同，因此，它可能需要 8、12(通常也是 80 位)甚至 16 个字节(float128/quadruple precision) 并根据其大小有一个范围.

The definition of long double is compiler & platform dependent, it is at least the same as a double, thus, it may take 8, 12 (usually also for 80bits) or even 16 bytes (float128/quadruple precision) and has a range according to its size.

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