COMPMID-556: Rename CPP folder to reference

Change-Id: I147644349547c4e3804a80b564a9ad95131ad2d0
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/111560
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: BSG Visual Compute Jenkins server to access repositories on http://mpd-gerrit.cambridge.arm.com <bsgcomp@arm.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/tests/validation/reference/ReductionOperation.cpp b/tests/validation/reference/ReductionOperation.cpp
new file mode 100644
index 0000000000..acfcc09cea
--- /dev/null
+++ b/tests/validation/reference/ReductionOperation.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2017 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "ReductionOperation.h"
+
+#include "tests/validation/Helpers.h"
+
+#include <algorithm>
+#include <cmath>
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+namespace
+{
+template <typename T>
+struct square
+{
+    T operator()(const T &lhs, const T &rhs) const
+    {
+        return (lhs + rhs * rhs);
+    }
+};
+
+template <typename T>
+T reduce_operation(T *ptr, int reduce_elements, ReductionOperation op)
+{
+    switch(op)
+    {
+        case ReductionOperation::SUM_SQUARE:
+            return std::accumulate(ptr, ptr + reduce_elements, 0.f, square<T>());
+        default:
+            ARM_COMPUTE_ERROR("Unsupported reduction operation");
+    }
+}
+} // namespace
+
+template <typename T>
+SimpleTensor<T> reduction_operation(const SimpleTensor<T> &src, const TensorShape &dst_shape, unsigned int axis, ReductionOperation op)
+{
+    // Create reference
+    SimpleTensor<T> dst{ dst_shape, src.data_type() };
+
+    // Compute reference
+    const int reduce_elems = src.shape()[axis];
+    const int upper_dims   = src.shape().total_size_upper(axis + 1);
+
+    for(int du = 0; du < upper_dims; ++du)
+    {
+        if(axis == 0)
+        {
+            const T *src_row_ptr = src.data() + du * reduce_elems;
+            dst[du]              = reduce_operation(src_row_ptr, reduce_elems, op);
+        }
+        else
+        {
+            ARM_COMPUTE_ERROR("Unsupported reduction axis");
+        }
+    }
+
+    return dst;
+}
+
+template SimpleTensor<float> reduction_operation(const SimpleTensor<float> &src, const TensorShape &dst_shape, unsigned int axis, ReductionOperation op);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute