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/*
* 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.
*/
#ifndef __ARM_COMPUTE_TEST_VALIDATION_HELPERS_H__
#define __ARM_COMPUTE_TEST_VALIDATION_HELPERS_H__
#include "Types.h"
#include <type_traits>
#include <utility>
namespace arm_compute
{
namespace test
{
namespace validation
{
/** Helper function to get the testing range for each activation layer.
*
* @param[in] activation Activation function to test.
* @param[in] fixed_point_position (Optional) Number of bits for the fractional part. Defaults to 1.
*
* @return A pair containing the lower upper testing bounds for a given function.
*/
template <typename T>
std::pair<T, T> get_activation_layer_test_bounds(ActivationLayerInfo::ActivationFunction activation, int fixed_point_position = 1)
{
bool is_float = std::is_floating_point<T>::value;
std::pair<T, T> bounds;
// Set initial values
if(is_float)
{
bounds = std::make_pair(-255.f, 255.f);
}
else
{
bounds = std::make_pair(std::numeric_limits<T>::lowest(), std::numeric_limits<T>::max());
}
// Reduce testing ranges
switch(activation)
{
case ActivationLayerInfo::ActivationFunction::LOGISTIC:
case ActivationLayerInfo::ActivationFunction::SOFT_RELU:
// Reduce range as exponent overflows
if(is_float)
{
bounds.first = -40.f;
bounds.second = 40.f;
}
else
{
bounds.first = -(1 << (fixed_point_position));
bounds.second = 1 << (fixed_point_position);
}
break;
case ActivationLayerInfo::ActivationFunction::TANH:
// Reduce range as exponent overflows
if(!is_float)
{
bounds.first = -(1 << (fixed_point_position));
bounds.second = 1 << (fixed_point_position);
}
break;
case ActivationLayerInfo::ActivationFunction::SQRT:
// Reduce range as sqrt should take a non-negative number
bounds.first = (is_float) ? 0 : 1 << (fixed_point_position);
break;
default:
break;
}
return bounds;
}
/** Helper function to get the testing range for batch normalization layer.
*
* @param[in] fixed_point_position (Optional) Number of bits for the fractional part. Defaults to 1.
*
* @return A pair containing the lower upper testing bounds.
*/
template <typename T>
std::pair<T, T> get_batchnormalization_layer_test_bounds(int fixed_point_position = 1)
{
bool is_float = std::is_floating_point<T>::value;
std::pair<T, T> bounds;
// Set initial values
if(is_float)
{
bounds = std::make_pair(-1.f, 1.f);
}
else
{
bounds = std::make_pair(1, 1 << (fixed_point_position));
}
return bounds;
}
} // namespace validation
} // namespace test
} // namespace arm_compute
#endif //__ARM_COMPUTE_TEST_VALIDATION_HELPERS_H__
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