title: Thread safe random numbers
body: <p>I tried to implement "Monte Carlo" algorithm in parallel manner, so I need to use a thread safe version of a random number generator.<br>
  I searched a lot and finally found 
  <code>int qrand ()</code>
  which is a Thread-safe version of the standard C++ <code>rand()</code> function, (defined in <code>&lt;cstdlib&gt;</code> and <code>&lt;stdlib.h&gt;</code>). When I use it, VS fired "identifier not found" error. </p>
  
  <p>I use MS visual studio'10 and wrote my code in C++ using OMP.</p>
  
  <p>Any help?</p>