std::ratio_not_equal
From cppreference.com
Defined in header
<ratio>
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template< class R1, class R2 >
struct ratio_not_equal : std::integral_constant; |
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If the ratios R1 and R2 are not equal, provides the member constant value
equal true. Otherwise, value
is false.
Contents |
Inherited from std::integral_constant
Member constants
value
[static]
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true if R1::num != R2::num || R1::den != R2::den , false otherwise (public static member constant) |
Member functions
operator bool |
converts the object to bool, returns value (public member function) |
operator()
(C++14)
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returns value (public member function) |
Member types
Type | Definition |
value_type
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bool
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type
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std::integral_constant<bool, value> |
[edit] Possible implementation
template< class R1, class R2 > struct ratio_not_equal : std::integral_constant < bool, !std::ratio_equal<R1, R2> > {}; |
[edit] Example
Run this code
#include <iostream> #include <ratio> int main() { if(std::ratio_not_equal<std::ratio<2,3>, std::ratio<1,3>>::value) { std::cout << "2/3 != 1/3\n"; } else { std::cout << "2/3 == 1/3\n"; } }
Output:
2/3 != 1/3
[edit] See also
(library fundamentals TS)
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variable template alias of std::ratio_not_equal::value (variable template) |