diff --git a/src/Function1D.cpp b/src/Function1D.cpp
index 4a853a3..f63b1b8 100644
--- a/src/Function1D.cpp
+++ b/src/Function1D.cpp
@@ -200,64 +200,64 @@ Aurora::Matrix Aurora::imag(const Aurora::Matrix &matrix) {
 }
 
 Aurora::Matrix Aurora::ceil(const Aurora::Matrix &matrix) {
-    auto output = malloc(matrix.getDataSize());
+    auto output = malloc(matrix.getDataSize()*matrix.getValueType());
     //for real part
-    vsCeilI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE, output, SAME_STRIDE);
+    vsCeilI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE*matrix.getValueType(), output, SAME_STRIDE*matrix.getValueType());
     if (matrix.getValueType() == Complex) {
         //for imag part
-        vsCeilI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE, output + 1, SAME_STRIDE);
+        vsCeilI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType(), output + 1, SAME_STRIDE*matrix.getValueType());
     }
     return Aurora::Matrix::New(output, matrix);
 }
 
 Aurora::Matrix Aurora::ceil(const Aurora::Matrix &&matrix) {
     //for real part
-    vsCeilI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE, matrix.getData(), SAME_STRIDE);
+    vsCeilI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE*matrix.getValueType(), matrix.getData(), SAME_STRIDE*matrix.getValueType());
     if (matrix.getValueType() == Complex) {
         //for imag part
-        vsCeilI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE, matrix.getData() + 1, SAME_STRIDE);
+        vsCeilI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType());
     }
     return matrix;
 }
 
 Aurora::Matrix Aurora::round(const Aurora::Matrix &matrix) {
-    auto output = malloc(matrix.getDataSize());
+    auto output = malloc(matrix.getDataSize()*matrix.getValueType());
     //for real part
-    vsRoundI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE, output, SAME_STRIDE);
+    vsRoundI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE*matrix.getValueType(), output, SAME_STRIDE*matrix.getValueType());
     if (matrix.getValueType() == Complex) {
         //for imag part
-        vsRoundI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE, output + 1, SAME_STRIDE);
+        vsRoundI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType(), output + 1, SAME_STRIDE*matrix.getValueType());
     }
     return Aurora::Matrix::New(output, matrix);
 }
 
 Aurora::Matrix Aurora::round(const Aurora::Matrix &&matrix) {
     //for real part
-    vsRoundI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE, matrix.getData(), SAME_STRIDE);
+    vsRoundI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE*matrix.getValueType(), matrix.getData(), SAME_STRIDE*matrix.getValueType());
     if (matrix.getValueType() == Complex) {
         //for imag part
-        vsRoundI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE, matrix.getData() + 1, SAME_STRIDE);
+        vsRoundI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType());
     }
     return matrix;
 }
 
 Aurora::Matrix Aurora::floor(const Aurora::Matrix &matrix) {
-    auto output = malloc(matrix.getDataSize());
+    auto output = malloc(matrix.getDataSize()*matrix.getValueType());
     //for real part
-    vsFloorI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE, output, SAME_STRIDE);
+    vsFloorI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE*matrix.getValueType(), output, SAME_STRIDE*matrix.getValueType());
     if (matrix.getValueType() == Complex) {
         //for imag part
-        vsFloorI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE, output + 1, SAME_STRIDE);
+        vsFloorI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType(), output + 1, SAME_STRIDE*matrix.getValueType());
     }
     return Aurora::Matrix::New(output, matrix);
 }
 
 Aurora::Matrix Aurora::floor(const Aurora::Matrix &&matrix) {
     //for real part
-    vsFloorI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE, matrix.getData(), SAME_STRIDE);
+    vsFloorI(matrix.getDataSize(), matrix.getData(), SAME_STRIDE*matrix.getValueType(), matrix.getData(), SAME_STRIDE*matrix.getValueType());
     if (matrix.getValueType() == Complex) {
         //for imag part
-        vsFloorI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE, matrix.getData() + 1, SAME_STRIDE);
+        vsFloorI(matrix.getDataSize(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType(), matrix.getData() + 1, SAME_STRIDE*matrix.getValueType());
     }
     return matrix;
 }