memilio/config.h

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/* 
* Copyright (C) 2020-2026 MEmilio
*
* Authors: Daniel Abele
*
* Contact: Martin J. Kuehn <Martin.Kuehn@DLR.de>
*
* 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.
*/
 
#ifndef MIO_CONFIG_H
#define MIO_CONFIG_H
 
#include "memilio/config_internal.h"
 
using ScalarType = double;
 
namespace ad
{
namespace internal
{
// Forward declaration used for support of ad types in Limits.
// These templates are called AD_TAPE_REAL and DATA_HANDLER internally in AD.
template <class FP, class DataHandler>
struct active_type;
} // namespace internal
} // namespace ad
 
namespace mio
{
template <typename FP>
struct Limits {
    static constexpr FP zero_tolerance() = delete;
};
 
template <>
struct Limits<float> {
    static constexpr float zero_tolerance()
    {
        return 1e-6f;
    }
};
 
template <>
struct Limits<double> {
    static constexpr double zero_tolerance()
    {
        return 1e-12;
    }
};
 
template <class FP, class DataHandler>
struct Limits<ad::internal::active_type<FP, DataHandler>> {
    static constexpr FP zero_tolerance()
    {
        return Limits<FP>::zero_tolerance();
    }
};
} // namespace mio
#endif