PolynomialTraits_d::Permute Concept Reference

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. More...

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.