raction <i>f</i> and an exponent <i>e</i>, where 0.5 &le; <i>f</i>
&lt; 1 and <i class="var">a</i> = <i>f</i> 2<sup><i>e</i></sup>. The
computed exponent <i>e</i> will be stored in <i class="var">*ptr</i>,
and the functions return <i>f</i>.
</p>

<hr/>

<p class="funcname"><b id="Sleef_modfq1" class="func">Sleef_modfq1</b>, <b id="Sleef_modfq1_purec" class="func">Sleef_modfq1_purec</b>, <b id="Sleef_modfq1_purecfma" class="func">Sleef_modfq1_purecfma</b> - break a number into integral and fractional parts</