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diff --git a/src/routines/level3/xherk.hpp b/src/routines/level3/xherk.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 Xherk routine. The precision is implemented using the template argument
+// 'T', whereas the alpha/beta arguments are of type 'U'. The implementation is very similar to the
+// Xsyrk routine.
+//
+// =================================================================================================
+
+#ifndef CLBLAST_ROUTINES_XHERK_H_
+#define CLBLAST_ROUTINES_XHERK_H_
+
+#include "routine.hpp"
+
+namespace clblast {
+// =================================================================================================
+
+// See comment at top of file for a description of the class
+template <typename T, typename U>
+class Xherk: public Routine {
+ public:
+
+  // Constructor
+  Xherk(Queue &queue, EventPointer event, const std::string &name = "HERK");
+
+  // Templated-precision implementation of the routine
+  StatusCode DoHerk(const Layout layout, const Triangle triangle, const Transpose a_transpose,
+                    const size_t n, const size_t k,
+                    const U alpha,
+                    const Buffer<T> &a_buffer, const size_t a_offset, const size_t a_ld,
+                    const U beta,
+                    const Buffer<T> &c_buffer, const size_t c_offset, const size_t c_ld);
+};
+
+// =================================================================================================
+} // namespace clblast
+
+// CLBLAST_ROUTINES_XHERK_H_
+#endif