An Introduction to Modules

Abstract

The aims of this chapter are to look at the facilities provided in Fortran provided by modules, in particular:

• the use of a module to aid in the consistent definition of precision throughout a program and sub-programs;

• the use of modules for global data;

• the use of modules for derived data types;

• the use of modules for explicit procedure interfaces;

• the use of modules to package procedures;

• a complete numerical example solving systems of linear equations using Gaussian Elimination;

Common sense is the best distributed commodity in the world, for every man is convinced that he is well supplied with it.

Descartes.