1 files changed, 83 insertions, 0 deletions
diff --git a/reference_model/src/verify/verify_relative.cc b/reference_model/src/verify/verify_relative.cc
new file mode 100644
index 0000000..b12daf7
--- /dev/null
+++ b/reference_model/src/verify/verify_relative.cc
@@ -0,0 +1,83 @@
+
+// Copyright (c) 2024, ARM Limited.
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//         http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+
+#include <cmath>
+#include <vector>
+
+#include "verifiers.h"
+#include "verify/verify_utils.h"
+
+namespace TosaReference
+{
+
+namespace
+{
+template <typename OutDtype>
+bool validateData(const double* ref,
+                  const OutDtype* imp,
+                  const std::vector<int32_t>& shape,
+                  const RelativeVerifyInfo& cfg)
+{
+    const size_t T = static_cast<size_t>(numElements(shape));
+    TOSA_REF_REQUIRE(T > 0, "[R] Invalid shape for reference tensor");
+
+    double errBound = cfg.max * cfg.scale;
+    for (size_t i = 0; i < T; ++i)
+    {
+        bool valid = tosaCheckFloatBound(imp[i], ref[i], errBound);
+        if (!valid)
+        {
+            auto pos = indexToPosition(i, shape);
+            WARNING("[Verifier][RP] Location %s", positionToString(pos).c_str());
+            return false;
+        }
+    }
+    return true;
+}
+}    // namespace
+
+bool verifyRelative(const CTensor* referenceTensor,
+                    const CTensor* implementationTensor,
+                    const RelativeVerifyInfo& rInfo)
+{
+    // Validate that tensors are provided
+    TOSA_REF_REQUIRE(referenceTensor != nullptr, "[R] Reference tensor is missing");
+    TOSA_REF_REQUIRE(implementationTensor != nullptr, "[R] Implementation tensor is missing");
+
+    const std::vector<int32_t> refShape(referenceTensor->shape, referenceTensor->shape + referenceTensor->num_dims);
+
+    const double* refData = reinterpret_cast<const double*>(referenceTensor->data);
+    TOSA_REF_REQUIRE(refData != nullptr, "[R] Missing data for reference");
+
+    switch (implementationTensor->data_type)
+    {
+        case tosa_datatype_fp32_t: {
+            const auto* impData = reinterpret_cast<const float*>(implementationTensor->data);
+            TOSA_REF_REQUIRE(impData != nullptr, "[R] Missing data for implementation");
+            return validateData(refData, impData, refShape, rInfo);
+        }
+        case tosa_datatype_fp16_t: {
+            const auto* impData = reinterpret_cast<const half_float::half*>(implementationTensor->data);
+            TOSA_REF_REQUIRE(impData != nullptr, "[R] Missing data for implementation");
+            return validateData(refData, impData, refShape, rInfo);
+        }
+        default:
+            WARNING("[Verifier][R] Data-type not supported.");
+            break;
+    }
+
+    return false;
+}
+}    // namespace TosaReference