diff --git a/src/Function1D.cpp b/src/Function1D.cpp
index 4d4d781..68284a0 100644
--- a/src/Function1D.cpp
+++ b/src/Function1D.cpp
@@ -18,6 +18,7 @@
 #include <Eigen/SVD>
 #include <mkl_lapack.h>
 #include <sys/types.h>
+#include <utility>
 
 using namespace Aurora;
 
@@ -199,6 +200,19 @@ Aurora::Matrix Aurora::round(const Aurora::Matrix &&matrix) {
     return matrix;
 }
 
+Matrix Aurora::auroraNot(const Matrix& aMatrix){
+    return auroraNot(std::forward<Matrix&&>(aMatrix.deepCopy()));
+}
+
+Matrix Aurora::auroraNot(Matrix&& aMatrix){
+    Eigen::Map<Eigen::VectorXd> v2(aMatrix.getData(), aMatrix.getDataSize());
+    v2 = (v2.array()>0).select(1,v2);
+    v2 = (v2.array()<0).select(0,v2);
+    v2 = v2.array()+1.0;
+    v2 = (v2.array() == 2.0).select(0.0, v2);
+    return aMatrix;
+}
+
 Aurora::Matrix Aurora::sqrt(const Aurora::Matrix& matrix) {
 
     if (matrix.getValueType() != Complex) {
diff --git a/src/Function1D.h b/src/Function1D.h
index cddd088..2926d23 100644
--- a/src/Function1D.h
+++ b/src/Function1D.h
@@ -113,6 +113,9 @@ namespace Aurora {
      */
     void padding(Matrix& aMatrix, int aIndex, double aValue);
 
+    Matrix auroraNot(const Matrix& aMatrix);
+    Matrix auroraNot(Matrix&& aMatrix);
+    
     Matrix convertfp16tofloat(short* aData, int aRows, int aColumns);
 };