replaced standard header functionality in threadwise tensor slice transfer...

replaced standard header functionality in threadwise tensor slice transfer files and added header guards in element_wise_operation.hpp

include/ck/tensor_operation/gpu/block/thread_group_tensor_slice_transfer_v7r2.hpp

@@ -131,7 +131,7 @@ struct ThreadGroupTensorSliceTransfer_v7r2
     }
 
     template <typename T>
-    using is_tuple = decltype(std::declval<T&>().IsTuple());
+    using is_tuple = decltype(ck::declval<T&>().IsTuple());
 
     template <typename DstBuffers, index_t ThreadScratchId = 0>
     __device__ void RunWrite(const DstDescs& dst_descs,

include/ck/tensor_operation/gpu/element/element_wise_operation.hpp

@@ -513,7 +513,7 @@ struct NormalizeInInfer
                                                   const T3& gamma,
                                                   const T4& beta) const
     {
-        static_assert(std::is_same<T2, float>::value || std::is_same<T2, double>::value,
+        static_assert(is_same<T2, float>::value || is_same<T2, double>::value,
                       "Data type is not supported by this operation!");
 
         using ck::type_convert;

include/ck/tensor_operation/gpu/thread/threadwise_tensor_slice_transfer.hpp

@@ -212,7 +212,7 @@ template <typename SrcData,
           typename enable_if<DstDesc::IsKnownAtCompileTime(), bool>::type = false>
 struct ThreadwiseTensorSliceTransfer_v2
 {
-    static_assert((InvalidElementAsNaN && !std::is_integral<DstData>::value) ||
+    static_assert((InvalidElementAsNaN && !ck::is_integral<DstData>::value) ||
                       (!InvalidElementAsNaN),
                   "Filling invalid element as NaN is only for floating point types");