OSFESOR Code – The Delay Differential Equation Tool “Improving Delay Differential Equations Solver” | ||
| AL-Rafidain Journal of Computer Sciences and Mathematics | ||
| Article 13, Volume 1, Issue 2, December 2004, Pages 199-217 PDF (395.04 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/csmj.2004.164119 | ||
| Authors | ||
| Riyadh S. Naoum1; Abbas Y. Al-Bayati2; Ann J. Al-Sawoor3 | ||
| 1College of Science Baghdad University | ||
| 2College of Computer Sciences and Mathematics University of Mosul, Mosul, Iraq | ||
| 3College of Computer Sciences and Mathematics Mosul University/Iraq | ||
| Abstract | ||
| After having reviewed the RETARD code, which was originally written by Hairer & Wanner in 1995 with the aim of solving delay differential equations (DDEs), a new arithmetic called OSFESOR code is presented in this paper. The OSFESOR (Optimal stepsize for each step of RETARD) code is a tool for automatic implementation of DDEs in Fortran 77. Consequently, by use of the OSFESOR code, it is possible during the run of a program to evaluate the solution of DDEs with optimal stepsize, H, for each step , to evaluate the accuracy of any result provided by the computer . In short, the use of OSFESOR code serves to validate the result provided by a computer, and to assure the user of the reliability of scientific computations. | ||
| Keywords | ||
| delay differential equations (DDEs); OSFESOR; Fortran 77 | ||
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