Some of my Algol 68 Programs
Finding loop point of finite state machine:, elaborated here.
and here as elaborated here and motivated here (classic 3 body calculation).
A simple explicit version of the same physics.
And another (tiling the hyperbolic plane).
Pretty good polynomial root finder
Random Normal Deviates
Code from testing generalizations of axial vectors
Here is an Algol 68 program motivated here (about free motion of rigid body),
Several programs associated with Motion of a Rigid Body
A numerical anomaly illustrated with this code.
Runga Kutta code.
linear equation solver
The incomplete gamma function needed to check this.
eigen described here