Function Object
Returns the remainder obtained by dividing the first argument by the second argument.
#include<functional>
template <class T> struct modulus : public binary_function<T, T, T> ;
modulus is a binary function object. Its operator() returns the remainder resulting from of x divided by y. You can pass a modulus object to any algorithm that requires a binary function. For example, the transform algorithm applies a binary operation to corresponding values in two collections and stores the result. modulus would be used in that algorithm in the following manner:
vector<int> vec1; vector<int> vec2; vector<int> vecResult; . . . transform(vec1.begin(), vec1.end(), vec2.begin(), vecResult.begin(), modulus<int>());
After this call to transform, vecResult(n) will contain the remainder of vec1(n) divided by vec2(n).
template <class T> struct modulus : binary_function<T, T, T> { typedef typename binary_function<T, T, T>::second_argument_type n second_argument_type; typedef typename binary_function<T, T, T>::first_argument_type first_argument_type; typedef typename binary_function<T, T, T>::result_type result_type; T operator() (const T&, const T&) const; };
If your compiler does not support default template parameters, then you need to always supply the Allocator template argument. For instance, you will need to write :
vector<int, allocator>
instead of
vector<int>
binary_function, Function Objects