tdc_tdc_to_tortoise_cscal

interface

Type	Intent		Name
class(tdc),	intent(inout)	::	this	The routine is called on this time dependent coordinate object.
integer(kind=ip),	intent(in)	::	ielem	The index of the element that contains the coordinate transformation information.
integer(kind=ip),	intent(in)	::	dir	The index of the boundary within the element that contains the coordinate transformation. Left boundary: 1, right boundary: 2.
complex(kind=wp),	intent(in)	::	dudlambda	The value of $\frac{\partial\Psi}{\partial\lambda}$ to transform.
complex(kind=wp),	intent(in)	::	dudxi	The value of $\frac{\partial\Psi}{\partial\xi}$ to transform.
complex(kind=wp),	intent(out)	::	dudt	On output contains the $\frac{\partial\Psi}{\partial t}$ value.
complex(kind=wp),	intent(out)	::	dudrstar	On output contains the $\frac{\partial\Psi}{\partial r_*}$ value.

Routine to transform from time dependent $(\lambda,\xi)$ to tortoise coordinates $(t,r_*)$ for complex scalar input at element boundaries.