ith_A_offset Function

private pure function ith_A_offset(layout, i) result(offset)

Compute the offset vector connecting a site with label "A", to its i-th neighbor, returning a (scalar) xy coordinate. It takes any i ∈ ℤ, but there will only be 3 inequivalent output vectors, pointing to the three nearest neighbors.

Arguments

Type	Intent	Optional	Attributes		Name
type(unit_cell),	intent(in)			::	layout
integer,	intent(in)			::	i

Return Value type(xy)