testfun_dudrhon Function

public function testfun_dudrhon(equi, x, y, phi)

Gradient normal to flux surface label, via finite difference on analytic solution with small grid distance

Arguments

Type	Intent	Optional	Attributes		Name
class(equilibrium_t)				::	equi
real(kind=FP),	intent(in)			::	x
real(kind=FP),	intent(in)			::	y
real(kind=FP),	intent(in)			::	phi

Return Value real(kind=fp)