step_tanh Function

public pure function step_tanh(x0, x, wx)

Smooth step function based on hyperbolic tangent

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=FP),	intent(in)			::	x0	Position of center of step
real(kind=FP),	intent(in)			::	x	Position where function is evaluated
real(kind=FP),	intent(in),	optional		::	wx	Width of step, if set to zero yields heaviside function

Return Value real(kind=fp)