I have a program which does a lot of computations with Array&#39;s of rationals.  In order to get better performance I&#39;d like to use unboxed arrays, but, since (Ratio Int) isn&#39;t a primitive type this doesn&#39;t work.  It occured to me that I could rewrite this using -fglasgow-exts where I represent a rational by (# Int, Int #).  It isn&#39;t too hard to do this, but I&#39;d like to know it it&#39;s already in some library out there, so that I can use something already existing.  This is a more general problem that I have (I&#39;m pretty new to Haskell) of finding a library to &quot;do X&quot;.<br>
<br>Victor<br>