Define a macro for handling the absolute value of dcomplex

#endif // lapack_int

#endif // np_int

//! \brief Macro to compute the conjugate of a complex number.

//! \brief Macro to compute the conjugate of a double precision complex number.

#define dconjg(z) ( (__real__ (z) - I * (__imag__ (z))) )

//! \brief Macro to compute the magnitude of a double precision complex number.

#define dcabs(z) ( std::sqrt(__real__ (z) * __real__ (z) + __imag__ (z) * __imag__ (z)) )

/*! \brief Get the imaginary part of double precision complex number.

 *

 * \param z: `const dcomplex &` Reference to the complex number from