Difference between revisions of "cpp/utility/functional/multiplies"
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< cpp | utility | functional
Andreas Krug (Talk | contribs) m (fmt, {{c}}) |
Andreas Krug (Talk | contribs) m (const T & -> const T&) |
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===Possible implementation=== | ===Possible implementation=== | ||
{{eq fun|1= | {{eq fun|1= | ||
| − | constexpr T operator()(const T &lhs, const T &rhs) const | + | constexpr T operator()(const T& lhs, const T& rhs) const |
{ | { | ||
return lhs * rhs; | return lhs * rhs; | ||
Revision as of 23:41, 13 October 2023
| Defined in header <functional>
|
||
| template< class T > struct multiplies; |
(until C++14) | |
| template< class T = void > struct multiplies; |
(since C++14) | |
Function object for performing multiplication. Effectively calls operator* on two instances of type T.
Contents |
Specializations
|
The standard library provides a specialization of
|
(since C++14) |
Member types
| Type | Definition |
result_type (deprecated in C++17)(removed in C++20)
|
T
|
first_argument_type (deprecated in C++17)(removed in C++20)
|
T
|
second_argument_type (deprecated in C++17)(removed in C++20)
|
T
|
|
These member types are obtained via publicly inheriting std::binary_function<T, T, T>. |
(until C++11) |
Member functions
| operator() |
returns the product of two arguments (public member function) |
std::multiplies::operator()
| T operator()( const T& lhs, const T& rhs ) const; |
(until C++14) | |
| constexpr T operator()( const T& lhs, const T& rhs ) const; |
(since C++14) | |
Returns the product of lhs and rhs.
Parameters
| lhs, rhs | - | values to multiply |
Return value
The result of lhs * rhs.
Exceptions
May throw implementation-defined exceptions.
Possible implementation
constexpr T operator()(const T& lhs, const T& rhs) const { return lhs * rhs; } |
