angdelta Function

public pure function angdelta(a, b, c)

calculate the function delta as defined in varshalovich et al. for use in 6-j symbol:

Arguments

Type	Intent	Optional	Attributes		Name
integer,	intent(in)			::	a
integer,	intent(in)			::	b
integer,	intent(in)			::	c

Return Value real(kind=8)