EMI_CanRejectStep (EMI Function)

Owning Class: Zero Crossings

Requires: Control Design and Simulation Module

Prototype

char EMI_CanRejectStep(emiRef model);

Description

Checks whether an ordinary differential equation (ODE) solver can reject the current step. A variable step-size ODE solver can reject a time step if the current step size is greater than the minimum step size. Fixed step-size ODE solvers cannot reject time steps. You can call this function only within the EMI_CB_CheckStepAcceptance function.

Details

Examples

Inputs

Return Value

Returns a non-zero value if the ODE solver can reject the current time step. Otherwise, this function returns 0.

Details

You can use this function to implement a custom algorithm for detecting zero crossings.

Examples

/* pseudo code of a custom algorithm for detecting zero crossings */
void EMI_CB_CheckStepAcceptance(emiRef model) {
   if (condition_exists_for_rejection) {
      if (EMI_CanRejectStep(model)) {
         EMI_RejectStep(model, new_step_size);
      }
      else {
         EMI_RequestCallbackToResetStates(model);
      }
   }
}

Related Topics

EMI_CB_CheckStepAcceptance
EMI_RejectStep
EMI_RequestCallbackToResetStates