title: How do I print floats as exponentials in gdb?
body: <p>I want to print my variables in exponential form. Currently, I get:</p>
  
  <pre><code>(gdb) set $x=200.0500
  (gdb) print $x
  $3 = 200.05000000000001
  </code></pre>
  
  <p>I want:</p>
  
  <pre><code>  2.00E+002
  </code></pre>
  
  <p>or</p>
  
  <pre><code>  2.00E2
  </code></pre>
  
  <p>In other words, I want to control the digits printed also the exponential form.</p>