45 #ifndef Xyce_N_TIA_fwd_h
46 #define Xyce_N_TIA_fwd_h
51 class BackwardDifferentiation15;
53 class TimeIntegrationMethod;
54 class StepErrorControl;
59 class WorkingIntegrationMethod;
64 #endif // Xyce_N_TIA_fwd_h
Pure virtual class to augment a linear system.