Define real() and imag() as functions to allow for overloading

#endif // lapack_int

#endif // np_int

#define imag(z) ( __imag__ (z) )

#define real(z) ( __real__ (z) )

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

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

 *

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

 * which to extract the imaginary part.

 * \return Im(z): `double` Imaginary part of z.

 */

double inline imag(const dcomplex &z) { return __imag__ z; }

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

 *

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

 * which to extract the real part.

 * \return Re(z): `double` Real part of z.

 */

double inline real(const dcomplex &z) { return __real__ z; }

#endif