.. index:: single: ode_system_protocol .. _ode_system_protocol/0: .. rst-class:: right **protocol** ``ode_system_protocol`` ======================= Protocol for a non-stiff first-order ordinary differential equation system. | **Availability:** | ``logtalk_load(numerical_analysis(loader))`` | **Author:** Paulo Moura | **Version:** 1:0:0 | **Date:** 2026-09-04 | **Compilation flags:** | ``static`` | **Dependencies:** | (none) | **Remarks:** | (none) | **Inherited public predicates:** | (none) .. contents:: :local: :backlinks: top Public predicates ----------------- .. index:: derivative/3 .. _ode_system_protocol/0::derivative/3: ``derivative/3`` ^^^^^^^^^^^^^^^^ Computes the state derivative at a time and state. The derivative must have the same dimension as the state. | **Compilation flags:** | ``static`` | **Template:** | ``derivative(Time,State,Derivative)`` | **Mode and number of proofs:** | ``derivative(+number,+list(number),-list(number))`` - ``one`` ------------ Protected predicates -------------------- (none) Private predicates ------------------ (none) Operators --------- (none)