Hamiltonian Boundary Value Methods (HBVMs) for
Functional Differential Equations with
Piecewise Continuous Arguments (FDEPCAs)

Main Matlab code

Reference paper
G. Gurioli, W. Wang, X. Yan. Hamiltonian Boundary Value Methods (HBVMs) for Functional Differential Equations with Piecewise Continuous Arguments. Numerical Algorithms (DOI: 10.1007/s11075-024-01994-7).