A simulation-model compiler for all seasons

Abstract

A new runtime simulation-model compiler quickly reads, compiles, and immediately solves vector differential equations and difference equations as well as scalar equations for dynamic-system models. Vector assignments compactly model nonlinear as well as linear matrix/vector relations for many problems in physics, control systems, neural networks, and fuzzy logic. The key feature is that the new vector differential-equation solver can replicate a dynamic-system model many times and then simulates hundreds of such models in a single simulation run, e.g. for Monte-Carlo studies. Also, partial differential equations (e.g. for a heat exchanger) can be solved together with ordinary differential equations. Portable C code runs on UNIX or LINUX workstations. A fast machine-language version for personal computers (Windows 98 and NT) directly utilizes the Pentium floating-point hardware stack, which is automatically continued into memory.