itkNumberToString.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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
 *
 *         https://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  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 itkNumberToString_h
#define itkNumberToString_h
 
#include "itkMacro.h"
#include <string>
 
namespace itk
{
template <typename TValue = void>
class ITK_TEMPLATE_EXPORT NumberToString
{
public:
  std::string
  operator()(TValue val) const;
};
 
// declaration of specialization
template <>
ITKCommon_EXPORT std::string
                 NumberToString<double>::operator()(double val) const;
template <>
ITKCommon_EXPORT std::string
                 NumberToString<float>::operator()(float val) const;
 
template <>
class NumberToString<void>
{
public:
  template <typename TValue>
  std::string
  operator()(const TValue val) const
  {
    constexpr NumberToString<TValue> convert{};
    return convert(val);
  }
};
 
 
template <typename TValue>
std::string
ConvertNumberToString(const TValue val)
{
  constexpr NumberToString<TValue> convert{};
  return convert(val);
}
} // namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkNumberToString.hxx"
#endif
#endif