/*
 * Complex number in C.
 *
 * Example to illustrate how to implement type-safe arithmetic in C.
 *
 * Godmar Back
 * CS 3204 Fall 2006
 */

#include <math.h>

typedef struct 
  {
    double	re;
    double	im;
  } complex_t;

static inline complex_t
complex_add(complex_t x, complex_t y)
{
  return (complex_t){ x.re + y.re, x.im + y.im };
}

static inline double
complex_real(complex_t x)
{
  return x.re;
}

static inline double
complex_imaginary(complex_t x)
{
  return x.im;
}

static inline double
complex_abs(complex_t x)
{
  return sqrt(x.re * x.re + x.im * x.im);
}


// vim: sw=2