title: Where to find CUDA's cutil_math.h?
body: <p>The <a href="https://developer.nvidia.com/cuda-faq" rel="noreferrer">CUDA FAQ</a> says:</p>
  
  <blockquote>
    <p>CUDA defines vector types such as float4, but doesn't include any
    operators on them by default. However, you can define your own
    operators using standard C++. The CUDA SDK <strong>includes a header
    "cutil_math.h"</strong> that defines some common operations on the vector
    types.</p>
  </blockquote>
  
  <p>However I can not find this using CUDA SDK 5.0. Has it been removed/renamed?</p>
  
  <p>I've found a version of the header <a href="http://code.google.com/p/cudpp/source/browse/trunk/common/inc/cutil_math.h?r=157" rel="noreferrer">here</a>. How is it related to the one that's supposed to come with SDK?</p>