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) |

The `HUGE_VALF`

, `HUGE_VAL`

and `HUGE_VALL`

macros expand to positive floating point constant expressions which compare equal to the values returned by floating-point functions and operators in case of overflow (see `math_errhandling`

).

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` |

On implementations that support floating-point infinities, these macros always expand to the positive infinities of `float`

, `double`

, and `long double`

, respectively.

(C++11) | evaluates to positive infinity or the value guaranteed to overflow a `float` (macro constant) |

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