C function for solving sets of ODEs

pbd is an ODE solution package, written in C, and based on the PBD method of van Bokhoven (IEEE Trans. on Circuits and Systems, v CAS-22, no 2, Feb. 1975, pp109-115). pbd provides a callable function, pbd(), which is intended to be called from user supplied code as part of a larger simulation or computation. It consists of fairly simple code, and is released under the GNU General Public License: pbd.tar.gz.

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