refactor: update remaining integrators to use diffeq::core namespace

Author: WenyinWei

include/integrators/ode/bdf.hpp

@@ -32,9 +32,9 @@ constexpr double MAX_FACTOR = 10.0;
  * Stiff: Excellent
  */
 template<typename S>
-class BDFIntegrator : public AdaptiveIntegrator<S> {
+class BDFIntegrator : public core::AdaptiveIntegrator<S> {
 public:
-    using base_type = AdaptiveIntegrator<S>;
+    using base_type = core::AdaptiveIntegrator<S>;
     using state_type = typename base_type::state_type;
     using time_type = typename base_type::time_type;
     using value_type = typename base_type::value_type;

include/integrators/ode/dop853.hpp

@@ -48,11 +48,11 @@ class DOP853DenseOutputHelper {
  * Reference: Hairer, Norsett, Wanner, "Solving Ordinary Differential Equations I"
  */
 template<system_state S>
-class DOP853Integrator : public AdaptiveIntegrator<S> {
+class DOP853Integrator : public core::AdaptiveIntegrator<S> {
 
 
 public:
-    using base_type = AdaptiveIntegrator<S>;
+    using base_type = core::AdaptiveIntegrator<S>;
     using state_type = typename base_type::state_type;
     using time_type = typename base_type::time_type;
     using value_type = typename base_type::value_type;

include/integrators/ode/lsoda.hpp

@@ -17,9 +17,9 @@ namespace diffeq {
  * based on stiffness detection. This is a simplified version inspired by the original LSODA algorithm.
  */
 template<system_state S>
-class LSODAIntegrator : public AdaptiveIntegrator<S> {
+class LSODAIntegrator : public core::AdaptiveIntegrator<S> {
 public:
-    using base_type = AdaptiveIntegrator<S>;
+    using base_type = core::AdaptiveIntegrator<S>;
     using state_type = typename base_type::state_type;
     using time_type = typename base_type::time_type;
     using value_type = typename base_type::value_type;

include/integrators/ode/rk23.hpp

@@ -18,9 +18,9 @@ namespace diffeq {
  * Adaptive: Yes
  */
 template<system_state S>
-class RK23Integrator : public AdaptiveIntegrator<S> {
+class RK23Integrator : public core::AdaptiveIntegrator<S> {
 public:
-    using base_type = AdaptiveIntegrator<S>;
+    using base_type = core::AdaptiveIntegrator<S>;
     using state_type = typename base_type::state_type;
     using time_type = typename base_type::time_type;
     using value_type = typename base_type::value_type;

include/integrators/ode/rk45.hpp

@@ -17,9 +17,9 @@ namespace diffeq {
  * Usage: General-purpose adaptive ODE integration
  */
 template<system_state S>
-class RK45Integrator : public AdaptiveIntegrator<S> {
+class RK45Integrator : public core::AdaptiveIntegrator<S> {
 public:
-    using base_type = AdaptiveIntegrator<S>;
+    using base_type = core::AdaptiveIntegrator<S>;
     using state_type = typename base_type::state_type;
     using time_type = typename base_type::time_type;
     using value_type = typename base_type::value_type;

include/integrators/ode/simple_bdf1.hpp

@@ -17,9 +17,9 @@ namespace diffeq {
  * BDF1 equation: y_{n+1} = y_n + h * f(t_{n+1}, y_{n+1})
  */
 template<typename S>
-class SimpleBDF1Integrator : public AdaptiveIntegrator<S> {
+class SimpleBDF1Integrator : public core::AdaptiveIntegrator<S> {
 public:
-    using base_type = AdaptiveIntegrator<S>;
+    using base_type = core::AdaptiveIntegrator<S>;
     using state_type = typename base_type::state_type;
     using time_type = typename base_type::time_type;
     using value_type = typename base_type::value_type;