std::minus

 

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plus minus negate multiplies divides modulus logical_and logical_or logical_not	equal_to not_equal_to greater less greater_equal less_equal bit_and bit_or bit_xor bit_not (C++14)
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Defined in header <functional>
template< class T > struct minus;		(until C++14)
template< class T = void > struct minus;		(since C++14)

Function object for performing subtraction. Effectively calls operator- on two instances of type T.

Specializations

The standard library provides a specialization of std::minus when T is not specified, which leaves the parameter types and return type to be deduced. minus<void> function object implementing x - y deducing argument and return types (class template specialization)

(since C++14)

Member types

Type	Definition
result_type(deprecated in C++17)	T
first_argument_type(deprecated in C++17)	T
second_argument_type(deprecated in C++17)	T

Member functions

operator()

returns the difference between two arguments (public member function)

std::minus::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 difference between lhs and rhs.

Parameters

lhs, rhs

-

values to subtract from one another

Return value

The result of lhs - rhs.

Exceptions

(none)

Possible implementation

constexpr T operator()(const T &lhs, const T &rhs) const { return lhs - rhs; }