composition_from_idx Function

public pure function composition_from_idx(k, N, idx) result(composition)

Return the composition for a given composition index

The index is assigned by lexicographically decreasing order. This function is the inverse of composition_idx.

Arguments

Type	Intent	Optional	Attributes		Name
integer,	intent(in)			::	k	k is the number of summands (k == size(composition)).
integer,	intent(in)			::	N	N is the sum over the composition (N == sum(composition)).
integer(kind=int64),	intent(in)			::	idx	The composition index.

Return Value integer, (k)

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