std::make_unsigned — cppreference.com
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| Déclaré dans l'en-tête <type_traits> |
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(depuis C++11) | |
Compte tenu d'une intégrale (sauf bool) ou T type d'énumération, fournit la type membre typedef qui est le type entier non signé correspondant à T, avec le même CV-qualification .
Original:
Given an integral (except bool) or enumeration type T, provides the member typedef type which is the unsigned integer type corresponding to T, with the same cv-qualifiers.
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Types de membres
Nom Original: Name The text has been machine-translated via Google Translate. |
Definition |
type
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le type entier non signé correspondant à Original: the unsigned integer type corresponding to The text has been machine-translated via Google Translate. |
Exemple
#include <iostream> #include <type_traits> int main() { typedef std::make_unsigned<char>::type char_type; typedef std::make_unsigned<int>::type int_type; typedef std::make_unsigned<volatile long>::type long_type; bool ok1 = std::is_same<char_type, unsigned char>::value; bool ok2 = std::is_same<int_type, unsigned int>::value; bool ok3 = std::is_same<long_type, volatile unsigned long>::value; std::cout << std::boolalpha << "char_type is 'unsigned char'? : " << ok1 << '\n' << "int_type is 'unsigned int'? : " << ok2 << '\n' << "long_type is 'volatile unsigned long'? : " << ok3 << '\n'; }
Résultat :
char_type is 'unsigned char'? : true int_type is 'unsigned int'? : true long_type is 'volatile unsigned long'? : true
Voir aussi
(C++11) |
vérifie si un type est signée type arithmétique Original: checks if a type is signed arithmetic type The text has been machine-translated via Google Translate. (classe générique) [edit] |
(C++11) |
vérifie si un type est le type arithmétique non signée Original: checks if a type is unsigned arithmetic type The text has been machine-translated via Google Translate. (classe générique) [edit] |
(C++11) |
rend le type de donnée intégrale signé Original: makes the given integral type signed The text has been machine-translated via Google Translate. (classe générique) [edit] |