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diff --git a/src/routines/level1/xsum.hpp b/src/routines/level1/xsum.hpp
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+
+// =================================================================================================
+// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
+// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
+// width of 100 characters per line.
+//
+// Author(s):
+//   Cedric Nugteren <www.cedricnugteren.nl>
+//
+// This file implements the Xsum routine. The precision is implemented using a template argument.
+//
+// =================================================================================================
+
+#ifndef CLBLAST_ROUTINES_XSUM_H_
+#define CLBLAST_ROUTINES_XSUM_H_
+
+#include "routine.hpp"
+#include "routines/level1/xasum.hpp"
+
+namespace clblast {
+// =================================================================================================
+
+// See comment at top of file for a description of the class
+template <typename T>
+class Xsum: public Xasum<T> {
+ public:
+
+  // Members and methods from the base class
+  using Xasum<T>::DoAsum;
+
+  // Constructor
+  Xsum(Queue &queue, EventPointer event, const std::string &name = "SUM"):
+    Xasum<T>(queue, event, name) {
+  }
+
+  // Forwards to the regular absolute version. The implementation difference is realised in the
+  // kernel through a pre-processor macro based on the name of the routine.
+  StatusCode DoSum(const size_t n,
+                   const Buffer<T> &sum_buffer, const size_t sum_offset,
+                   const Buffer<T> &x_buffer, const size_t x_offset, const size_t x_inc) {
+    return DoAsum(n, sum_buffer, sum_offset, x_buffer, x_offset, x_inc);
+  }
+};
+
+// =================================================================================================
+} // namespace clblast
+
+// CLBLAST_ROUTINES_XSUM_H_
+#endif