Module ode_c 

C FFI functions for creating, configuring, solving, and destroying OdeWrapper objects.

Provides extern "C" functions for the full lifecycle of an ODE solver:

• diffsol_ode_wrapper_new_* — constructors (feature-gated by JIT backend or external).
• diffsol_ode_wrapper_get_* / diffsol_ode_wrapper_set_* — getters/setters for tolerances, time settings, solver type, and linear solver.
• diffsol_ode_wrapper_y0, diffsol_ode_wrapper_rhs, diffsol_ode_wrapper_rhs_jac_mul — low-level RHS evaluation.
• diffsol_ode_wrapper_solve, diffsol_ode_wrapper_solve_dense, diffsol_ode_wrapper_solve_fwd_sens, diffsol_ode_wrapper_solve_continuous_adjoint, diffsol_ode_wrapper_solve_adjoint_fwd, diffsol_ode_wrapper_solve_adjoint_bkwd — solve functions returning SolutionWrapper pointers.
• diffsol_ode_solve_vjp_fwd, diffsol_ode_solve_vjp_bkwd — reverse mode through the solver steps, with a VjpCheckpointWrapper between the two passes.
• diffsol_ode_wrapper_free — free an OdeWrapper.
• Serialization: diffsol_ode_wrapper_serialize, diffsol_ode_wrapper_deserialize.

Functions

diffsol_ode_free^⚠

Free an ODE wrapper previously returned by this library.

diffsol_ode_get_atol^⚠

Return the absolute tolerance configured for an ODE.

diffsol_ode_get_h0^⚠

Return the initial step size configured for an ODE.

diffsol_ode_get_ic_options^⚠

Return a handle to the initial-condition solver options for an ODE.

diffsol_ode_get_integrate_out^⚠

Return whether output equations are integrated alongside state equations.

diffsol_ode_get_linear_solver^⚠

Return the linear solver enum configured for an ODE.

diffsol_ode_get_matrix_type^⚠

Return the matrix type configured for an ODE.

diffsol_ode_get_nbatch^⚠

Return the number of lanes (independent copies of the system) of an ODE in out_value.

diffsol_ode_get_ode_solver^⚠

Return the ODE solver enum configured for an ODE.

diffsol_ode_get_options^⚠

Return a handle to the ODE solver options for an ODE.

diffsol_ode_get_out_atol^⚠

Return the optional output absolute tolerance.

diffsol_ode_get_out_rtol^⚠

Return the optional output relative tolerance.

diffsol_ode_get_param_atol^⚠

Return the optional adjoint parameter absolute tolerance.

diffsol_ode_get_param_rtol^⚠

Return the optional adjoint parameter relative tolerance.

diffsol_ode_get_rtol^⚠

Return the relative tolerance configured for an ODE.

diffsol_ode_get_sens_atol^⚠

Return the optional sensitivity absolute tolerance.

diffsol_ode_get_sens_rtol^⚠

Return the optional sensitivity relative tolerance.

diffsol_ode_get_t0^⚠

Return the initial time configured for an ODE.

diffsol_ode_rhs^⚠

Evaluate the ODE right-hand side at a given time and state.

diffsol_ode_rhs_jac_mul^⚠

Evaluate the ODE Jacobian-vector product at a given time and state.

diffsol_ode_set_atol^⚠

Set the absolute tolerance for an ODE.

diffsol_ode_set_h0^⚠

Set the initial step size for an ODE.

diffsol_ode_set_integrate_out^⚠

Set whether output equations are integrated alongside state equations.

diffsol_ode_set_linear_solver^⚠

Set the linear solver enum for an ODE.

diffsol_ode_set_ode_solver^⚠

Set the ODE solver enum for an ODE.

diffsol_ode_set_out_atol^⚠

Set the optional output absolute tolerance.

diffsol_ode_set_out_rtol^⚠

Set the optional output relative tolerance.

diffsol_ode_set_param_atol^⚠

Set the optional adjoint parameter absolute tolerance.

diffsol_ode_set_param_rtol^⚠

Set the optional adjoint parameter relative tolerance.

diffsol_ode_set_rtol^⚠

Set the relative tolerance for an ODE.

diffsol_ode_set_sens_atol^⚠

Set the optional sensitivity absolute tolerance.

diffsol_ode_set_sens_rtol^⚠

Set the optional sensitivity relative tolerance.

diffsol_ode_set_t0^⚠

Set the initial time for an ODE.

diffsol_ode_solve^⚠

Solve an ODE up to a final time.

diffsol_ode_solve_dense^⚠

Solve an ODE and sample the solution at requested times.

diffsol_ode_solve_fwd_sens^⚠

Solve an ODE and sample forward sensitivities at requested times.

diffsol_ode_solve_vjp_bkwd^⚠

Pull the gradient of a scalar objective with respect to the model outputs back through the steps of a forward pass of diffsol_ode_solve_vjp_fwd, to the parameters.

diffsol_ode_solve_vjp_fwd^⚠

Solve an ODE at requested times, and keep the solver state after each step for a later reverse-mode pass with diffsol_ode_solve_vjp_bkwd.

diffsol_ode_y0^⚠

Evaluate the initial condition for an ODE.

diffsol_tensor_list_free^⚠

Free a list of arrays previously returned by this library.