std::ratio_not_equal

From cppreference.com
< cpp‎ | numeric‎ | ratio
C++
Metaprogramming library
Type traits
Type categories
(C++11)
(C++11)(DR*)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Type properties
(C++11)
(C++11)
(C++11)
(C++11)
(C++14)
(C++11)
(C++17)
(C++23)
(C++11)(deprecated in C++26)
(C++11)
(C++11)
(C++11)(until C++20*)
(C++11)(deprecated in C++20)
(C++11)
(C++11)
(C++20)
(C++20)
(C++23)
(C++17)
Type trait constants
(C++11) (C++17) (C++11) (C++11)
Metafunctions
(C++17)
(C++17)
(C++17)
Supported operations
Relationships and property queries
(C++11)
(C++26)
(C++11)
(C++11)
(C++11)
(C++17) (C++17) (C++17) (C++17)
Type modifications
(C++11)(C++11)(C++11)
(C++11)(C++11)(C++11)
(C++11)
(C++11)
Type transformations
(C++11)(deprecated in C++23)
(C++11)(deprecated in C++23)
(C++11)
(C++20)
(C++11)(until C++20*)(C++17)

(C++11)
(C++11)
(C++20)
(C++11)
(C++20)
(C++11)
(C++17)
Compile-time rational arithmetic
Compile-time integer sequences
(C++14)
Compile time rational arithmetic
(C++11)
Arithmetic
(C++11)
(C++11)
(C++11)
(C++11)
Comparison
(C++11)
ratio_not_equal
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Defined in header <ratio>
template < class R1, class R2 >
struct ratio_not_equal : std::integral_constant < bool, /* see below */ > { } ;
(since C++11)

If the ratios R1 and R2 are not equal, provides the member constant value equal true. Otherwise, value is false

Helper variable template

template < class R1, class R2 >
constexpr bool ratio_not_equal_v = ratio_not_equal<R1, R2> :: value ;
(since C++17)

Inherited from std::integral_constant

Member constants

value
[static]
 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)
 returns value
(public member function)

Member types

Type Definition
value_type bool
type std::integral_constant < bool, value>

Possible implementation

template< class R1, class R2 >
struct ratio_not_equal : std::integral_constant <
                              bool,
                              !std::ratio_equal<R1, R2>
                         > {};

Example

Run this code
#include <ratio>
 
static_assert(std::ratio_not_equal_v<std::ratio<6, 9>, std::ratio<9, 6>>, "6/9 != 9/6");
 
int main() {}

See also

(C++11)
 compares two ratio objects for equality at compile-time
(class template)
Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/numeric/ratio/ratio_not_equal&oldid=176481