text: /* Copyright 2021 NVIDIA Corporation
   *
   * 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 __NUMPY_ABSOLUTE_H__
  #define __NUMPY_ABSOLUTE_H__
  
  #include "universal_function.h"
  #include <cmath>
  
  namespace legate {
  namespace numpy {
  using std::abs;
  template <class T>
  struct AbsoluteOperation {
    using argument_type           = T;
    constexpr static auto op_code = NumPyOpCode::NUMPY_ABSOLUTE;
  
    template <class _T                                                                     = T,
              std::enable_if_t<std::is_integral<_T>::value and std::is_signed<_T>::value>* = nullptr>
    constexpr T operator()(const T& x) const
    {
      return abs(x);
    }
  
    template <
      class _T                                                                       = T,
      std::enable_if_t<std::is_integral<_T>::value and std::is_unsigned<_T>::value>* = nullptr>
    constexpr T operator()(const T& x) const
    {
      return x;
    }
  
    template <class _T = T, std::enable_if_t<!std::is_integral<_T>::value>* = nullptr>
    constexpr auto operator()(const T& x) const
    {
      using std::fabs;
      return fabs(x);
    }
  };
  
  template <typename T>
  using Absolute = UnaryUniversalFunction<AbsoluteOperation<T>>;
  
  }  // namespace numpy
  }  // namespace legate
  
  #endif  // __NUMPY_ABSOLUTE_H__
  