Numerical Analysis Software

This package is a zip file containing Modula-2 source code for a collection of numerical analysis modules.

PIM version (last updated 21 June 1995).
ISO version (last updated 21 April 2016).

As supplied, the PIM version uses some modules from the PMOS library, but PMOS is not an absolute prerequisite. Note too that the PIM version is old and does not contain a lot of what the newer version contains.

If you want C code, search the web for Modula-2 to C translators.

What you get

Complex number arithmetic (useful if your compiler doesn't support the data type COMPLEX). Addition, subtraction, multiplication, square root, sin, cos, etc.
Matrices. Various operations including solving linear equations, several kinds of matrix factorisation, pseudoinverse, finding eigenvalues, singular value decomposition.
Polynomials: manipulation of polynomials, including root finding.
Fast Fourier Transform.
Solving ordinary differential equations.

What you don't get

This is a freeware package, and like all free software it comes with absolutely no support or guarantees of any kind. I will try to keep a consistent interface from one version to the next, but reserve the right to change calling conventions if I find a better alternative.

On the other hand, I'm not placing any restrictions on its use or modification. All I ask is that you refrain from presenting my work as if it were your own.

If you want to use this in a commercial application, then I won't stop you; but I strongly recommend that you look instead at commercially available software that comes with dealer support.

Author: Peter Moylan.
Feedback is welcome. Offers of help in expanding or improving the package would be even more welcome.

Last modified 5 December 2023.