Difference between revisions of "cpp/concepts/floating point"
From cppreference.com
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| + | ===References=== | ||
| + | {{ref std c++23}} | ||
| + | {{ref std|section=18.4.7|title=Arithmetic concepts|id=concepts.arithmetic}} | ||
| + | {{ref std end}} | ||
| + | {{ref std c++20}} | ||
| + | {{ref std|section=18.4.7|title=Arithmetic concepts|id=concepts.arithmetic}} | ||
| + | {{ref std end}} | ||
===See also=== | ===See also=== | ||
Latest revision as of 10:13, 7 September 2024
| Defined in header <concepts>
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| template< class T > concept floating_point = std::is_floating_point_v<T>; |
(since C++20) | |
The concept floating_point<T> is satisfied if and only if T is a floating-point type.
[edit] Example
Run this code
#include <concepts> #include <iostream> #include <type_traits> constexpr std::floating_point auto x2(std::floating_point auto x) { return x + x; } constexpr std::integral auto x2(std::integral auto x) { return x << 1; } int main() { constexpr auto d = x2(1.1); static_assert(std::is_same_v<double const, decltype(d)>); std::cout << d << '\n'; constexpr auto f = x2(2.2f); static_assert(std::is_same_v<float const, decltype(f)>); std::cout << f << '\n'; constexpr auto i = x2(444); static_assert(std::is_same_v<int const, decltype(i)>); std::cout << i << '\n'; }
Output:
2.2 4.4 888
[edit] References
- C++23 standard (ISO/IEC 14882:2024):
- 18.4.7 Arithmetic concepts [concepts.arithmetic]
- C++20 standard (ISO/IEC 14882:2020):
- 18.4.7 Arithmetic concepts [concepts.arithmetic]
[edit] See also
| (C++11) |
checks if a type is a floating-point type (class template) |
