wn_cplx_subtract3

typedef struct wn_cplx_struct *wn_cplx;

double real,imag;

void wn_cplx_make(wn_cplx *pnumber);

void wn_cplx_enter(wn_cplx c);

void wn_cplx_print(wn_cplx c);

double wn_cplx_norm_squared(wn_cplx c);

double wn_cplx_norm(wn_cplx c);

void wn_cplx_to_polar(double *pr, double *ptheta, wn_cplx c);

void wn_polar_to_cplx(wn_cplx c, double r, double theta);