Move statistics utils to common place as headers only

Author: AlexanderKalistratov

dpnp/backend/extensions/statistics/CMakeLists.txt

@@ -27,14 +27,12 @@
 set(python_module_name _statistics_impl)
 set(_module_src
     ${CMAKE_CURRENT_SOURCE_DIR}/bincount.cpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/common.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/histogram.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/histogramdd.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/histogram_common.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/sliding_dot_product1d.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/sliding_window1d.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/statistics_py.cpp
-    ${CMAKE_CURRENT_SOURCE_DIR}/validation_utils.cpp
 )
 
 pybind11_add_module(${python_module_name} MODULE ${_module_src})
@@ -66,6 +64,7 @@ set_target_properties(${python_module_name} PROPERTIES CMAKE_POSITION_INDEPENDEN
 
 target_include_directories(${python_module_name} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../include)
 target_include_directories(${python_module_name} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../src)
+target_include_directories(${python_module_name} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../common)
 
 target_include_directories(${python_module_name} PUBLIC ${Dpctl_INCLUDE_DIR})
 target_include_directories(${python_module_name} PUBLIC ${Dpctl_TENSOR_INCLUDE_DIR})

dpnp/backend/extensions/statistics/bincount.cpp

@@ -34,7 +34,7 @@
 using dpctl::tensor::usm_ndarray;
 
 using namespace statistics::histogram;
-using namespace statistics::common;
+using namespace ext::common;
 
 namespace
 {

dpnp/backend/extensions/statistics/bincount.hpp

@@ -28,8 +28,8 @@
 #include <pybind11/pybind11.h>
 #include <sycl/sycl.hpp>
 
-#include "dispatch_table.hpp"
 #include "dpctl4pybind11.hpp"
+#include "ext/dispatch_table.hpp"
 
 namespace dpctl_td_ns = dpctl::tensor::type_dispatch;
 
@@ -46,7 +46,7 @@ struct Bincount
                                 const size_t,
                                 const std::vector<sycl::event> &);
 
-    common::DispatchTable2<FnT> dispatch_table;
+    ext::common::DispatchTable2<FnT> dispatch_table;
 
     Bincount();