or ocaml native functions with interval programming on 64 bits machine.
<p>

The standard floating point functions results will always lie in the <code class="code">low; high</code> 
interval computed by the Fpu module, but they are slightly different on 32 and 64 
bits machines.
<p>

Using <code class="code">Open Fpu_rename</code> at the beginning of your program guarantees that floating 
computation will give the same results on 32 and 64 bits machines for all transcendantal 
functions but not for ordinar