INFINITY
Defined in header <cmath> | ? | ? |
|---|---|---|
#define INFINITY /*implementation defined*/ | ? | (since C++11) |
如果实现支持浮点无穷大，则宏INFINITY扩展为类型的常量表达式。float它的计算值为正或无符号无穷大。
如果实现不支持浮点无穷大，则宏INFINITY展开为一个确保使float在编译时，使用此宏将生成编译器警告。
另见
isinf (C++11) | checks if the given number is infinite (function) |
|---|---|
HUGE_VALFHUGE_VALHUGE_VALL (C++11)(C++11) | indicates the overflow value for float, double and long double respectively (macro constant) |
has_infinity static | identifies floating-point types that can represent the special value "positive infinity" (public static member constant of std::numeric_limits) |
infinity static | returns the positive infinity value of the given floating-point type (public static member function of std::numeric_limits) |
C无限文档
? cppreference.com在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。
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