: the coordinate system used. If the call to d03pzf
follows one of the finite difference routines then m
must be the same argument m
as used in that call. For the Keller box scheme only Cartesian coordinate systems are valid and so m must
be set to zero. No check will be made by d03pzf
in this case.
- Indicates Cartesian coordinates.
- Indicates cylindrical polar coordinates.
- Indicates spherical polar coordinates.