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// Copyright (c) 2023-2024, 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 <limits>
#include <memory>
#include <type_traits>
#include <utility>
#include "half.hpp"
#include "verifiers.h"
namespace TosaReference
{
namespace
{
template <typename OutType>
double calcErrorBound(double referenceValue, double boundsValue, const void* cfgPtr)
{
const auto cfg = reinterpret_cast<const AbsErrorVerifyInfo*>(cfgPtr);
double valBound = std::abs(referenceValue) * boundsValue;
if (cfg->lowerBound > 0)
{
valBound = std::max(cfg->lowerBound, valBound);
}
return exp2(-AccPrecision<OutType>::normal_frac) * valBound;
}
} // namespace
bool verifyAbsError(const CTensor* referenceTensor,
const CTensor* boundsTensor,
const CTensor* implementationTensor,
const AbsErrorVerifyInfo& aeInfo)
{
// Validate that tensors are provided
TOSA_REF_REQUIRE(referenceTensor != nullptr, "[AE] Reference tensor is missing");
TOSA_REF_REQUIRE(boundsTensor != nullptr, "[AE] Reference bounds tensor is missing");
TOSA_REF_REQUIRE(implementationTensor != nullptr, "[AE] 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);
const double* refBndData = reinterpret_cast<const double*>(boundsTensor->data);
TOSA_REF_REQUIRE(refData != nullptr && refBndData != nullptr, "[AE] Missing data for reference or bounds tensors");
const std::string modeStr = "AE";
switch (implementationTensor->data_type)
{
case tosa_datatype_fp32_t: {
const auto* impData = reinterpret_cast<const float*>(implementationTensor->data);
TOSA_REF_REQUIRE(impData != nullptr, "[AE] Missing data for implementation");
return validateData(refData, refBndData, impData, refShape, modeStr, &aeInfo, &calcErrorBound<float>);
}
case tosa_datatype_fp16_t: {
const auto* impData = reinterpret_cast<const half_float::half*>(implementationTensor->data);
TOSA_REF_REQUIRE(impData != nullptr, "[AE] Missing data for implementation");
return validateData(refData, refBndData, impData, refShape, modeStr, &aeInfo,
&calcErrorBound<half_float::half>);
}
default:
WARNING("[Verifier][AE] Data-type not supported.");
break;
}
return false;
}
} // namespace TosaReference
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