ScalarStrain.hpp

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// Copyright © 2020-2024 Alexandre Coderre-Chabot
//
// This file is part of Physical Quantities (PhQ), a C++ library of physical quantities, physical
// models, and units of measure for scientific computing.
//
// Physical Quantities is hosted at:
//     https://github.com/acodcha/phq
//
// Physical Quantities is licensed under the MIT License:
//     https://mit-license.org
//
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#ifndef PHQ_SCALAR_STRAIN_HPP
#define PHQ_SCALAR_STRAIN_HPP
 
#include <cstddef>
#include <functional>
#include <ostream>
 
#include "DimensionlessScalar.hpp"
 
namespace PhQ {
 
// Forward declaration for class PhQ::ScalarStrain.
template <typename NumericType>
class Frequency;
 
// Forward declaration for class PhQ::ScalarStrain.
template <typename NumericType>
class LinearThermalExpansionCoefficient;
 
// Forward declaration for class PhQ::ScalarStrain.
template <typename NumericType>
class ScalarStrainRate;
 
// Forward declaration for class PhQ::ScalarStrain.
template <typename NumericType>
class TemperatureDifference;
 
// Forward declaration for class PhQ::ScalarStrain.
template <typename NumericType>
class Time;
 
/// \brief Scalar component or resultant of a three-dimensional Euclidean strain symmetric dyadic
/// tensor. For the related tensor, see PhQ::Strain. For the time rate of change of scalar strain,
/// see PhQ::ScalarStrainRate, PhQ::Time, and PhQ::Frequency.
template <typename NumericType = double>
class ScalarStrain : public DimensionlessScalar<NumericType> {
public:
  /// \brief Default constructor. Constructs a scalar strain with an uninitialized value.
  ScalarStrain() = default;
 
  /// \brief Constructor. Constructs a scalar strain with a given value.
  explicit constexpr ScalarStrain(const NumericType value)
    : DimensionlessScalar<NumericType>(value) {}
 
  /// \brief Constructor. Constructs a scalar strain from a given scalar strain rate and time using
  /// the definition of strain rate.
  constexpr ScalarStrain(
      const ScalarStrainRate<NumericType>& scalar_strain_rate, const Time<NumericType>& time);
 
  /// \brief Constructor. Constructs a scalar strain from a given scalar strain rate and frequency
  /// using the definition of strain rate.
  constexpr ScalarStrain(const ScalarStrainRate<NumericType>& scalar_strain_rate,
                         const Frequency<NumericType>& frequency);
 
  /// \brief Constructor. Constructs a scalar strain from a given linear thermal expansion
  /// coefficient and temperature difference using the definition of the linear thermal expansion
  /// coefficient.
  constexpr ScalarStrain(
      const LinearThermalExpansionCoefficient<NumericType>& linear_thermal_expansion_coefficient,
      const TemperatureDifference<NumericType>& temperature_difference);
 
  /// \brief Destructor. Destroys this scalar strain.
  ~ScalarStrain() noexcept = default;
 
  /// \brief Copy constructor. Constructs a scalar strain by copying another one.
  constexpr ScalarStrain(const ScalarStrain<NumericType>& other) = default;
 
  /// \brief Copy constructor. Constructs a scalar strain by copying another one.
  template <typename OtherNumericType>
  explicit constexpr ScalarStrain(const ScalarStrain<OtherNumericType>& other)
    : ScalarStrain(static_cast<NumericType>(other.Value())) {}
 
  /// \brief Move constructor. Constructs a scalar strain by moving another one.
  constexpr ScalarStrain(ScalarStrain<NumericType>&& other) noexcept = default;
 
  /// \brief Copy assignment operator. Assigns this scalar strain by copying another one.
  constexpr ScalarStrain<NumericType>& operator=(const ScalarStrain<NumericType>& other) = default;
 
  /// \brief Copy assignment operator. Assigns this scalar strain by copying another one.
  template <typename OtherNumericType>
  constexpr ScalarStrain<NumericType>& operator=(const ScalarStrain<OtherNumericType>& other) {
    this->value = static_cast<NumericType>(other.Value());
    return *this;
  }
 
  /// \brief Move assignment operator. Assigns this scalar strain by moving another one.
  constexpr ScalarStrain<NumericType>& operator=(
      ScalarStrain<NumericType>&& other) noexcept = default;
 
  /// \brief Statically creates a scalar strain of zero.
  [[nodiscard]] static constexpr ScalarStrain<NumericType> Zero() {
    return ScalarStrain<NumericType>{static_cast<NumericType>(0)};
  }
 
  constexpr ScalarStrain<NumericType> operator+(
      const ScalarStrain<NumericType>& scalar_strain) const {
    return ScalarStrain<NumericType>{this->value + scalar_strain.value};
  }
 
  constexpr ScalarStrain<NumericType> operator-(
      const ScalarStrain<NumericType>& scalar_strain) const {
    return ScalarStrain<NumericType>{this->value - scalar_strain.value};
  }
 
  constexpr ScalarStrain<NumericType> operator*(const NumericType number) const {
    return ScalarStrain<NumericType>{this->value * number};
  }
 
  constexpr ScalarStrainRate<NumericType> operator*(const Frequency<NumericType>& frequency) const;
 
  constexpr ScalarStrain<NumericType> operator/(const NumericType number) const {
    return ScalarStrain<NumericType>{this->value / number};
  }
 
  constexpr ScalarStrainRate<NumericType> operator/(const Time<NumericType>& time) const;
 
  constexpr NumericType operator/(const ScalarStrain<NumericType>& scalar_strain) const noexcept {
    return this->value / scalar_strain.value;
  }
 
  constexpr void operator+=(const ScalarStrain<NumericType>& scalar_strain) noexcept {
    this->value += scalar_strain.value;
  }
 
  constexpr void operator-=(const ScalarStrain<NumericType>& scalar_strain) noexcept {
    this->value -= scalar_strain.value;
  }
 
  constexpr void operator*=(const NumericType number) noexcept {
    this->value *= number;
  }
 
  constexpr void operator/=(const NumericType number) noexcept {
    this->value /= number;
  }
};
 
template <typename NumericType>
inline constexpr bool operator==(
    const ScalarStrain<NumericType>& left, const ScalarStrain<NumericType>& right) noexcept {
  return left.Value() == right.Value();
}
 
template <typename NumericType>
inline constexpr bool operator!=(
    const ScalarStrain<NumericType>& left, const ScalarStrain<NumericType>& right) noexcept {
  return left.Value() != right.Value();
}
 
template <typename NumericType>
inline constexpr bool operator<(
    const ScalarStrain<NumericType>& left, const ScalarStrain<NumericType>& right) noexcept {
  return left.Value() < right.Value();
}
 
template <typename NumericType>
inline constexpr bool operator>(
    const ScalarStrain<NumericType>& left, const ScalarStrain<NumericType>& right) noexcept {
  return left.Value() > right.Value();
}
 
template <typename NumericType>
inline constexpr bool operator<=(
    const ScalarStrain<NumericType>& left, const ScalarStrain<NumericType>& right) noexcept {
  return left.Value() <= right.Value();
}
 
template <typename NumericType>
inline constexpr bool operator>=(
    const ScalarStrain<NumericType>& left, const ScalarStrain<NumericType>& right) noexcept {
  return left.Value() >= right.Value();
}
 
template <typename NumericType>
inline std::ostream& operator<<(
    std::ostream& stream, const ScalarStrain<NumericType>& scalar_strain) {
  stream << scalar_strain.Print();
  return stream;
}
 
template <typename NumericType>
inline constexpr ScalarStrain<NumericType> operator*(
    const NumericType number, const ScalarStrain<NumericType>& scalar_strain) {
  return ScalarStrain<NumericType>{number * scalar_strain.Value()};
}
 
}  // namespace PhQ
 
namespace std {
 
template <typename NumericType>
struct hash<PhQ::ScalarStrain<NumericType>> {
  inline size_t operator()(const PhQ::ScalarStrain<NumericType>& scalar_strain) const {
    return hash<NumericType>()(scalar_strain.Value());
  }
};
 
}  // namespace std
 
#endif  // PHQ_SCALAR_STRAIN_HPP