COMPMID-408 Create OpenCL complex math functions for 8 bit fixed point arithmetic.

Logarithm, inverse square root, exponential and multiplication for
8 bit fixed point arithmetic in OPenCL.

Change-Id: Ib976da7057242967c940df28ceebf39bc3ea3811
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/78273
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
diff --git a/arm_compute/core/CL/CLKernelLibrary.h b/arm_compute/core/CL/CLKernelLibrary.h
index c29610c..38cfad6 100644
--- a/arm_compute/core/CL/CLKernelLibrary.h
+++ b/arm_compute/core/CL/CLKernelLibrary.h
@@ -174,6 +174,17 @@
     {
         _kernel_path = kernel_path;
     };
+    /** Gets the path that the kernels reside in.
+     */
+    std::string get_kernel_path()
+    {
+        return _kernel_path;
+    };
+    /** Gets the source of the selected program
+      *
+      * @param[in] program_name Program name.
+     */
+    std::string get_program_source(const std::string &program_name);
     /** Sets the CL context used to create programs.
      *
      * @note Setting the context also resets the device to the