Solving Index-1 DAEs in Simulink using Level-2 M S-functions

This example illustrates the use of Simulink Level-2 S-functions to solve Index-I DAEs

Although there have been previous examples that solved DAEs in Simulink, there is no documentation for solving DAEs through S-functions. This example solves the Robertson problem (stiff) in Simulink using an S-function called HB1_DAE_sfun.m. The results are compared with hb1dae.m, which is a text-based version that is available as an example with MATLAB.