
Matlab program for Hermite-Birkhoff-Obrechkoff 4-stage 4-step ODE solver of order 14: HBOQ(14)4
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with quantized stepsize
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The main directory contains the following MATLAB m-files of HBOQ(14)4:
(*) HBOQ144solvr.m
(*) HBO7_4initd123steps.m
(*) HBO14_d123interp.m
(*) HBOQ144coefsmat.m  contains the coefficients (for the 16 values of the ratio r^Q) of the formulae 
    to calculate y(n+c2), y(n+c3), y(n+c4), y(n+1). 

The following examples illustrate the use of the code: 
(*) A1example.m
(*) D5example.m
(*) D999example.m
(*) gadyexample.m

The ODE problems are in the following files:
(*) Prbgaldyn.m, Prbgaldynd1_d3outp.m : Galactic dynamics
(*) PrbD1, PrbD1d1_d3outp : Kepler's problem
(*) PrbA1, PrbA1d1_d3outp : Problem A1 of DETEST

If you have questions or comments, please contact
Truong Nguyen-Ba
Department of Mathematics and Statistics, University of Ottawa,
Ottawa, Ontario, Canada K1N 6N5.
tnguyen@mathstat.uottawa.ca
%
Philip W. Sharp
Department of Mathematics, University of Auckland, New Zealand.
sharp@math.auckland.ac.nz
%
Remi Vaillancourt
Department of Mathematics and Statistics, University of Ottawa,
Ottawa, Ontario, Canada K1N 6N5.
remi@uottawa.ca
www.site.uottawa.ca/~remi

Note: The Fortran, C++ and Matlab programs will be put in several repositories
