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std::make_unsigned(3) C++ Standard Libary std::make_unsigned(3) NAME std::make_unsigned - std::make_unsigned Synopsis Defined in header <type_traits> template< class T > (since C++11) struct make_unsigned; If T is an integral (except bool) or enumeration type, provides the member typedef type which is the unsigned integer type corresponding to T, with the same cv-qualifiers. If T is signed or unsigned char, short, int, long, long long; the unsigned type from this list corresponding to T is provided. If T is an enumeration type or char, wchar_t , char8_t (since C++20), char16_t, char32_t; the unsigned integer type with the smallest rank having the same sizeof as T is provided. Otherwise, the behavior is undefined. (until C++20) Otherwise, the program is ill-formed. (since C++20) If the program adds specializations for std::make_unsigned, the be- havior is undefined. Member types Name Definition type the unsigned integer type corresponding to T Helper types template< class T > (since C++14) using make_unsigned_t = typename make_unsigned<T>::type; Example // Run this code #include <type_traits> int main() { using uchar_type = std::make_unsigned_t<char>; using uint_type = std::make_unsigned_t<int>; using ulong_type = std::make_unsigned_t<volatile long>; static_assert( std::is_same_v<uchar_type, unsigned char> and std::is_same_v<uint_type, unsigned int> and std::is_same_v<ulong_type, volatile unsigned long> ); } See also is_signed checks if a type is a signed arithmetic type (C++11) (class template) is_unsigned checks if a type is an unsigned arithmetic type (C++11) (class template) make_signed makes the given integral type signed (C++11) (class template) http://cppreference.com 2024.06.10 std::make_unsigned(3)
NAME | Synopsis | Member types | Helper types | Example | See also
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