title: Convert double[] to double* in c#
body: <p>How to convert <code>double[]</code> to <code>double*</code> in c#</p>
  
  <p>I was trying</p>
  
  <pre><code>unsafe {
   System.Double[] a = { 1.0, 2.0, 3.0, 4.0, 5.0 };
   fixed(double *aP = a)
     for (int i = 0; i &lt; a.Length ; i++)
     {
      //need to copy?
     }
  }
  </code></pre>