neg"><span class="keyword">val</span> is_neg</span> : <code class="type">float -> bool</code></pre><div class="info ">
is_neg x returns if x has its sign bit set (true for -0.)<br>
</div>
<br>
Below, we have functions for changing the rounding mode.
The default mode for rounding is NEAREST.
<p>

BE VERY CAREFUL: using these functions unwisely can ruin all your
computations. Remember also that on 64 bits machine these functions won't
change the behaviour of the SSE instructions.
<p>

When setting the roundin