A universal GFSR random number generator for personal computers [Comput. Phys. Commun. 85 (1995) 127–152]
✍ Scribed by Kenneth G. Hamilton
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 43 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0010-4655
No coin nor oath required. For personal study only.
✦ Synopsis
In the final composition of my article, all five of the figures were pasted in with the wrong sides up. In Fig. 1, the image should be rotated 90 degrees (either to the left or to the right), so that the dark diagonal band runs from lower-left to upper-right. This demonstrates the serial correlation between consecutive numbers following the Lewis-Payne initialization, and is the only figure in which the error causes any real problem. The description given in the text (bottom of page 130) is correct, and the figure should match it.
In Fig. 2, the top of the frame is at the right, while in Fig. 3, it is at the left (the chevrons should point downward). The purpose of these diagrams was to show that GFSRs that have small values of p can easily yield odd patterns of concentration in a two-dimensional space. This meaning should be clear, even with the incorrect orientation of the pictures.
In Figs. 4 and5, the top of the frame is at the left in both cases. These plots indicate the seemingly random nature of the output from GFSRs that have large vales of p, and this conclusion should be evident to the reader regardless of which way up the picture is held.
No changes to either the text or the software are involved in this erratum.