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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 OutDtype>
bool validateData(const double* ref,
const double* bnd,
const OutDtype* imp,
const std::vector<int32_t>& shape,
const AbsErrorVerifyInfo& cfg)
{
const size_t T = static_cast<size_t>(numElements(shape));
TOSA_REF_REQUIRE(T > 0, "[AE] Invalid shape for reference tensor");
for (size_t i = 0; i < T; ++i)
{
double valBound = std::abs(ref[i]) * bnd[i];
if (cfg.lowerBound > 0)
{
valBound = std::max(cfg.lowerBound, valBound);
}
double errBound = exp2(-AccPrecision<OutDtype>::normal_frac) * valBound;
bool valid = tosaCheckFloatBound(imp[i], ref[i], errBound);
if (!valid)
{
auto pos = indexToPosition(i, shape);
WARNING("[Verifier][AE] Location %s", positionToString(pos).c_str());
return false;
}
}
return true;
}
} // namespace
bool verifyAbsError(const CTensor* ref, const CTensor* refBnd, const CTensor* imp, const AbsErrorVerifyInfo& aeInfo)
{
// Validate that tensors are provided
TOSA_REF_REQUIRE(ref != nullptr, "[AE] Reference tensor is missing");
TOSA_REF_REQUIRE(refBnd != nullptr, "[AE] Reference bounds tensor is missing");
TOSA_REF_REQUIRE(imp != nullptr, "[AE] Implementation tensor is missing");
const std::vector<int32_t> refShape(ref->shape, ref->shape + ref->num_dims);
const double* refData = reinterpret_cast<const double*>(ref->data);
const double* refBndData = reinterpret_cast<const double*>(refBnd->data);
TOSA_REF_REQUIRE(refData != nullptr && refBndData != nullptr, "[AE] Missing data for reference or bounds tensors");
switch (imp->data_type)
{
case tosa_datatype_fp32_t: {
const auto* impData = reinterpret_cast<const float*>(imp->data);
TOSA_REF_REQUIRE(impData != nullptr, "[AE] Missing data for implementation");
return validateData(refData, refBndData, impData, refShape, aeInfo);
}
case tosa_datatype_fp16_t: {
const auto* impData = reinterpret_cast<const half_float::half*>(imp->data);
TOSA_REF_REQUIRE(impData != nullptr, "[AE] Missing data for implementation");
return validateData(refData, refBndData, impData, refShape, aeInfo);
}
default:
WARNING("[Verifier][AE] Data-type not supported.");
break;
}
return false;
}
} // namespace TosaReference
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