<i>intfudu</i>
</p>
</dd></dl>

<dl>
<dt><a name="index-signum_005fto_005fabs"></a><u>Function:</u> <b>signum_to_abs</b><i> (<var>e</var>)</i></dt>
<dd> 
<p>This function replaces subexpressions of the form <em>q signum(q)</em> by
<em>abs(q)</em>.  Before it does these substitutions, it replaces
subexpressions of the form <em>signum(p) * signum(q)</em> by
<em>signum(p * q)</em>; examples:
</p>
<table><tr><td>&nbsp;</td><td><pre class="example"> (%i1) map('signum_to_abs, [x * signum(x), x * y * signum(x)* si