Hiding implementation details for distance primitives (dense + sparse) (

#344)

Authors:
  - Corey J. Nolet (https://github.com/cjnolet)

Approvers:
  - Divye Gala (https://github.com/divyegala)
  - Dante Gama Dessavre (https://github.com/dantegd)

URL: #344

cpp/include/raft/distance/canberra.cuh → cpp/include/raft/distance/detail/canberra.cuh

@@ -15,10 +15,11 @@
  */
 
 #pragma once
-#include <raft/distance/pairwise_distance_base.cuh>
+#include <raft/distance/detail/pairwise_distance_base.cuh>
 
 namespace raft {
 namespace distance {
+namespace detail {
 
 /**
  * @brief the canberra distance matrix calculation implementer
@@ -157,5 +158,7 @@ void canberraImpl(int m, int n, int k, const InType *pA, const InType *pB,
       n, m, k, lda, ldb, ldd, pB, pA, pDcast, fin_op, stream);
   }
 }
+
+}  // namespace detail
 }  // namespace distance
 }  // namespace raft

cpp/include/raft/distance/chebyshev.cuh → cpp/include/raft/distance/detail/chebyshev.cuh

@@ -15,11 +15,11 @@
  */
 
 #pragma once
-#include <raft/distance/pairwise_distance_base.cuh>
+#include <raft/distance/detail/pairwise_distance_base.cuh>
 
 namespace raft {
 namespace distance {
-
+namespace detail {
 /**
  * @brief the Chebyshev distance matrix calculation implementer
  *  It computes the following equation: cij = max(cij, op(ai-bj))
@@ -154,5 +154,6 @@ void chebyshevImpl(int m, int n, int k, const InType *pA, const InType *pB,
       n, m, k, lda, ldb, ldd, pB, pA, pDcast, fin_op, stream);
   }
 }
+}  // namespace detail
 }  // namespace distance
 }  // namespace raft

cpp/include/raft/distance/correlation.cuh → cpp/include/raft/distance/detail/correlation.cuh

@@ -16,11 +16,12 @@
 
 #pragma once
 #include <raft/cuda_utils.cuh>
-#include <raft/distance/pairwise_distance_base.cuh>
+#include <raft/distance/detail/pairwise_distance_base.cuh>
 #include <raft/linalg/reduce.cuh>
 
 namespace raft {
 namespace distance {
+namespace detail {
 
 /**
  * @brief the Correlation distance matrix:
@@ -243,5 +244,7 @@ void correlationImpl(int m, int n, int k, const InType *pA, const InType *pB,
                        fin_op, stream);
   }
 }
+
+}  // namespace detail
 }  // namespace distance
 }  // namespace raft

cpp/include/raft/distance/cosine.cuh → cpp/include/raft/distance/detail/cosine.cuh

@@ -16,11 +16,12 @@
 
 #pragma once
 
-#include <raft/distance/pairwise_distance_base.cuh>
+#include <raft/distance/detail/pairwise_distance_base.cuh>
 #include <raft/linalg/norm.cuh>
 
 namespace raft {
 namespace distance {
+namespace detail {
 
 /**
  * @brief the cosine distance matrix calculation implementer
@@ -201,5 +202,6 @@ void cosineAlgo1(Index_ m, Index_ n, Index_ k, const InType *pA,
   }
 }
 
+};  // end namespace detail
 };  // end namespace distance
 };  // end namespace raft