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std::minus(3)		       C++ Standard Libary		   std::minus(3)

NAME
     std::minus - std::minus

Synopsis
	Defined in header <functional>
	template<>			(since C++14)
	class minus<void>;

	std::minus<void>  is  a  specialization of std::minus with parameter and
     return type
	deduced.

Member functions
	operator() returns the difference of two arguments
		   (public member function)

     std::minus<void>::operator()

	template< class T, class U >

	constexpr auto operator()( T&& lhs, U&& rhs ) const

	    -> decltype(std::forward<T>(lhs) - std::forward<U>(rhs));

	Returns the difference of lhs and rhs.

Parameters
	lhs, rhs - values to subtract

Return value
	std::forward<T>(lhs) - std::forward<U>(rhs).

Example
     // Run this code

      #include <complex>
      #include <functional>
      #include <iostream>

      int main()
      {
	  auto complex_minus = std::minus<void>{}; // avoida can be omitted
	  constexpr std::complex<int> z(4, 2);
	  std::cout << complex_minus(z, 1) << '\n';
	  std::cout << (z - 1) << '\n';
      }

Output:
      (3,2)
      (3,2)

http://cppreference.com 	   2024.06.10			   std::minus(3)
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