std::numeric_limits::infinity
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< cpp | types | numeric limits
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| static T infinity() |
(avant C++11) | |
| static constexpr T infinity() |
(depuis C++11) | |
Retourne la valeur spéciale "infini positif», représentée par le
T type virgule flottante. N'a de sens que si std::numeric_limits<T>::has_infinity == true. Dans IEEE 754, la représentation binaire la plus courante de nombres à virgule flottante, l'infini positif est la valeur de tous les bits de l'ensemble d'exposants et tous les bits de la fraction effacé .Original:
Returns the special value "positive infinity", as represented by the floating-point type
T. Only meaningful if std::numeric_limits<T>::has_infinity == true. In IEEE 754, the most common binary representation of floating-point numbers, the positive infinity is the value with all bits of the exponent set and all bits of the fraction cleared.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Sommaire |
[modifier] Retourne la valeur
T
|
std::numeric_limits<T>::infinity() |
| /* non-specialized */ | T();
|
| bool | false |
| char | 0 |
| signed char | 0 |
| unsigned char | 0 |
| wchar_t | 0 |
| char16_t | 0 |
| char32_t | 0 |
| short | 0 |
| unsigned short | 0 |
| int | 0 |
| unsigned int | 0 |
| long | 0 |
| unsigned long | 0 |
| long long | 0 |
| unsigned long long | 0 |
| float | HUGE_VALF |
| double | HUGE_VAL |
| long double | HUGE_VALL |
[modifier] Exceptions
[modifier] Exemple
#include <iostream> #include <limits> int main() { double max = std::numeric_limits<double>::max(); double inf = std::numeric_limits<double>::infinity(); if(inf > max) std::cout << inf << " is greater than " << max << '\n'; }
Résultat :
inf is greater than 1.79769e+308
[modifier] Voir aussi
| [ statique ]Original: static The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
identifie types à virgule flottante qui peuvent représenter la valeur spéciale "infini positif" Original: identifies floating-point types that can represent the special value "positive infinity" The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (constante membre statique publique) |
