C6_from_alpha Function

public function C6_from_alpha(alpha, freq, dC6_dalpha, grad) result(C6)

$$\bar C_6=\frac3\pi\int_0^\infty\mathrm du\,\bar\alpha(u)^2,\qquad \partial\bar C_6=\frac6\pi\int_0^\infty\mathrm du \bar\alpha(u)\partial\bar\alpha(u)$$

Arguments

Type	Intent	Optional	Attributes		Name
real(kind=dp),	intent(in)			::	alpha(:,0:)
type(quad_pt_t),	intent(in)			::	freq(0:)
real(kind=dp),	intent(out),	optional	allocatable	::	dC6_dalpha(:,:)
logical,	intent(in),	optional		::	grad

Return Value real(kind=dp) (size(alpha,1))

Contents

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