std:: integral
From cppreference.com
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Defined in header
<concepts>
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||
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template
<
class
T
>
concept integral = std:: is_integral_v < T > ; |
(since C++20) | |
The concept
integral
<
T
>
is satisfied if and only if
T
is an integral type.
Example
Run this code
#include <concepts> #include <iostream> void print(std::integral auto i) { std::cout << "Integral: " << i << '\n'; } void print(auto x) { std::cout << "Non-integral: " << x << '\n'; } int main() { std::cout << std::boolalpha; static_assert(std::integral<bool>); print(true); static_assert(std::integral<char>); print('o'); static_assert(std::integral<int>); print(007); static_assert( ! std::integral<double> ); print(2e2); static_assert( ! std::integral<decltype("")> ); print("∫∫∫"); }
Output:
Integral: true Integral: o Integral: 7 Non-integral: 200 Non-integral: ∫∫∫
References
- C++23 standard (ISO/IEC 14882:2024):
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- 18.4.7 Arithmetic concepts [concepts.arithmetic]
- C++20 standard (ISO/IEC 14882:2020):
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- 18.4.7 Arithmetic concepts [concepts.arithmetic]
See also
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(C++11)
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checks if a type is an integral type
(class template) |