PolynomialTraits_d::Permute Class Reference

#include <Concepts/PolynomialTraits_d--Permute.h>

Definition

This AdaptableFunctor permutes the variables of the given polynomial with respect to a permutation $\sigma$, that is, each monomial $\prod x_i^{e_i}$ will be mapped to the monomial $\prod x_{\sigma(i)}^{e_i}$. The permutation $\sigma$ is given by the iterator range of length PolynomialTraits_d::d, which is supposed to contain the second row of the permutation.

For instance, let $p$ be a polynomial in 4 variables and it is intended to change the order of the variables such that $x_0 \mapsto x_2$, $x_1 \mapsto x_0$, $x_2 \mapsto x_1$ and $x_3 \mapsto x_3$. In this case the iterator range should contain the sequence $[2,0,1,3]$.

Refines

AdaptableFunctor

CopyConstructible

DefaultConstructible

See also

Polynomial_d

PolynomialTraits_d

Types
typedef PolynomialTraits_d::Polynomial_d	result_type

Operations
template<class Input_iterator >
result_type	operator() (PolynomialTraits_d::Polynomial_d p, Input_iterator begin, Input_iterator end)
	Returns $p$ with interchanged variables as defined by the iterator range.

Member Typedef Documentation

result_type

typedef PolynomialTraits_d::Polynomial_d PolynomialTraits_d::Permute::result_type

Member Function Documentation

operator()()

template<class Input_iterator >

result_type PolynomialTraits_d::Permute::operator()	(	PolynomialTraits_d::Polynomial_d	p,
		Input_iterator	begin,
		Input_iterator	end
	)

Returns $p$ with interchanged variables as defined by the iterator range.

Precondition

(end-begin == PolynomialTraits_d::d)

std::iterator_traits< InputIterator >::value_type is convertible to int.

The iterator range contains each value in $\{0,\dots,d-1\}$ exactly once.