``pvector'' class

In expressions like ``phi=I(Linv((-4*pi)*O(J(rho))));'' we think of phi and rho as vectors of the values of the potential and charge density at a set of sample points . For our Fourier representation the data in these ``vectors'' are actually stored on a three-dimensional mesh of points. We shall call the class which represents these physics vectors the ``pvector'' class.

Appendix F contains most of the specification of the pvector class, along with a main program to test it. This section will teach you the basics of making such a class by having you complete its specification.

• C3tensor() and free_C3tensor()
  • Debugging
• sum()
• operator-(), operator*()
• I()
• J()
• O() and Linv()