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package org.apache.commons.math3.ode.nonstiff;

import org.apache.commons.math3.RealFieldElement;

This interface represents an integrator  based on Butcher arrays.
Type parameters:
<T> – the type of the field elements
See Also:
RungeKuttaFieldIntegrator
EmbeddedRungeKuttaFieldIntegrator
Since:
3.6/** This interface represents an integrator  based on Butcher arrays.
 * @see RungeKuttaFieldIntegrator
 * @see EmbeddedRungeKuttaFieldIntegrator
 * @param <T> the type of the field elements
 * @since 3.6
 */

public interface FieldButcherArrayProvider<T extends RealFieldElement<T>> {

    
Get the time steps from Butcher array (without the first zero).
Returns:
time steps from Butcher array (without the first zero/** Get the time steps from Butcher array (without the first zero).
     * @return time steps from Butcher array (without the first zero
     */
    T[] getC();

    
Get the internal weights from Butcher array (without the first empty row).
Returns:
internal weights from Butcher array (without the first empty row)/** Get the internal weights from Butcher array (without the first empty row).
     * @return internal weights from Butcher array (without the first empty row)
     */
    T[][] getA();

    
Get the external weights for the high order method from Butcher array.
Returns:
external weights for the high order method from Butcher array/** Get the external weights for the high order method from Butcher array.
     * @return external weights for the high order method from Butcher array
     */
    T[] getB();

}