1 files changed, 2 insertions, 3 deletions
diff --git a/hwpfilter/source/solver.h b/hwpfilter/source/solver.h
index ea3295bad9d4..0da10ac72ae8 100644
--- a/hwpfilter/source/solver.h
+++ b/hwpfilter/source/solver.h
@@ -23,11 +23,10 @@
 class mgcLinearSystemD
 {
 public:
-  static double** NewMatrix (int N);
-  static void DeleteMatrix (int N, double** A);
+  static std::unique_ptr<std::unique_ptr<double[]>[]> NewMatrix (int N);
   static double* NewVector (int N);
 
-  static bool Solve (int N, double** A, double* b);
+  static bool Solve (int N, std::unique_ptr<std::unique_ptr<double[]>[]>& A, double* b);
   // Input:
   //     A[N][N] coefficient matrix, entries are A[row][col]
   //     b[N] vector, entries are b[row]