getAngleTan Function

public pure function getAngleTan(aVec, bVec)

Angle between two 3d vectors using tan formula Result will be from -pi to pi

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=dp),	intent(in),		dimension(3)	::	aVec
real(kind=dp),	intent(in),		dimension(3)	::	bVec

Return Value real(kind=dp)