Move value_type_of to ext/common.hpp

Author: vlad-perevezentsev

dpnp/backend/extensions/common/ext/common.hpp

@@ -106,6 +106,18 @@ struct IsNan
     }
 };
 
+template <typename T>
+struct value_type_of
+{
+    using type = T;
+};
+
+template <typename T>
+struct value_type_of<std::complex<T>>
+{
+    using type = T;
+};
+
 size_t get_max_local_size(const sycl::device &device);
 size_t get_max_local_size(const sycl::device &device,
                           int cpu_local_size_limit,

dpnp/backend/extensions/ufunc/elementwise_functions/interpolate.cpp

@@ -36,11 +36,13 @@
 
 #include "kernels/elementwise_functions/interpolate.hpp"
 
+#include "ext/common.hpp"
 #include "ext/validation_utils.hpp"
 
 namespace py = pybind11;
 namespace td_ns = dpctl::tensor::type_dispatch;
 
+using ext::common::value_type_of;
 using ext::validation::array_names;
 using ext::validation::array_ptr;
 using ext::validation::common_checks;
@@ -51,18 +53,6 @@ namespace dpnp::extensions::ufunc
 namespace impl
 {
 
-template <typename T>
-struct value_type_of
-{
-    using type = T;
-};
-
-template <typename T>
-struct value_type_of<std::complex<T>>
-{
-    using type = T;
-};
-
 template <typename T>
 using value_type_of_t = typename value_type_of<T>::type;
 

dpnp/backend/extensions/ufunc/elementwise_functions/nan_to_num.cpp

@@ -52,28 +52,20 @@
 #include "utils/type_dispatch.hpp"
 #include "utils/type_utils.hpp"
 
+#include "ext/common.hpp"
+
 namespace py = pybind11;
 namespace td_ns = dpctl::tensor::type_dispatch;
 
+using ext::common::value_type_of;
+
 // declare pybind11 wrappers in py_internal namespace
 namespace dpnp::extensions::ufunc
 {
 
 namespace impl
 {
 
-template <typename T>
-struct value_type_of
-{
-    using type = T;
-};
-
-template <typename T>
-struct value_type_of<std::complex<T>>
-{
-    using type = T;
-};
-
 template <typename T>
 using value_type_of_t = typename value_type_of<T>::type;