smooth_step -> after_line_search_custom_operation

Author: Huangzizhou

src/polysolve/nonlinear/Problem.hpp

@@ -90,7 +90,7 @@ namespace polysolve::nonlinear
         /// @param new_x New solution.
         virtual void solution_changed(const TVector &new_x) {}
 
-        virtual bool smooth_step(const TVector &x0, const TVector &x1) { return false; }
+        virtual bool after_line_search_custom_operation(const TVector &x0, const TVector &x1) { return false; }
 
         /// @brief Callback function used to determine if the solver should stop.
         /// @param state Current state of the solver.

src/polysolve/nonlinear/Solver.cpp

@@ -429,7 +429,7 @@ namespace polysolve::nonlinear
 
             {
                 TVector x1 = x + rate * delta_x;
-                if (objFunc.smooth_step(x, x1))
+                if (objFunc.after_line_search_custom_operation(x, x1))
                     objFunc.solution_changed(x1);
                 x = x1;
             }