</span></code>, where <code class="computeroutput"><span class="identifier">real</span></code>
          and <code class="computeroutput"><span class="identifier">imag</span> </code> are the variables
          representing the real and imaginary parts of our complex number. This can
          be achieved by writing:
        </p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Library
                  </p>
      