HUGE_VAL
Defined in header <cmath> | ? | ? |
|---|---|---|
#define HUGE_VALF /*implementation defined*/ | ? | (since C++11) |
#define HUGE_VAL /*implementation defined*/ | ? | ? |
#define HUGE_VALL /*implementation defined*/ | ? | (since C++11) |
大HUGE_VALF，，，HUGE_VAL和HUGE_VALL宏扩展为正浮点常量表达式，该表达式与浮点函数和运算符在溢出时返回的值相等，请参见math_errhandling29%。
Constant | Explanation |
|---|---|
HUGE_VALF | Expands to positive float expression that indicates overflow |
HUGE_VAL | Expands to positive double expression that indicates overflow, not necessarily representable as a float |
HUGE_VALL | Expands to positive long double expression that indicates overflow, not necessarily representable as a float or double |
在支持浮点无穷大的实现中，这些宏总是扩展到float，，，double，和long double分别。
另见
INFINITY (C++11) | evaluates to positive infinity or the value guaranteed to overflow a float (macro constant) |
|---|
C文件[医]瓦尔
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