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<p>
Next: <a href="zerop.html" accesskey="n" rel="next">zerop</a>, Previous: <a href="max.html" accesskey="p" rel="prev">max</a>, Up: <a href="Numbers-Dictionary.html" accesskey="u" rel="up">Numbers Dictionary</a> </p>
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<span id="minusp_002c-plusp-_005bFunction_005d"></span><h4 class="subsection">12.2.17 minusp, plusp [Function]</h4>
<p><code>minusp</code> <i>real</i> ⇒ <i>generalized-boolean</i>
</p>
<p><code>plusp</code> <i>real</i> ⇒ <i>generalized-boolean</i>
</p>
<span id="Arguments-and-Values_003a_003a-203"></span><h4 class="subsubheading">Arguments and Values::</h4>
<p><i>real</i>—a <i>real</i>.
</p>
<p><i>generalized-boolean</i>—a <i>generalized boolean</i>.
</p>
<span id="Description_003a_003a-282"></span><h4 class="subsubheading">Description::</h4>
<p><b>minusp</b> returns <i>true</i> if <i>real</i> is less than zero;
otherwise, returns <i>false</i>.
</p>
<p><b>plusp</b> returns <i>true</i> if <i>real</i> is greater than zero;
otherwise, returns <i>false</i>.
</p>
<p>Regardless of whether an <i>implementation</i> provides distinct
representations for positive and negative <i>float</i> zeros,
<tt>(minusp -0.0)</tt> always returns <i>false</i>.
</p>
<span id="Examples_003a_003a-186"></span><h4 class="subsubheading">Examples::</h4>
<div class="example">
<pre class="example"> (minusp -1) ⇒ <i>true</i>
(plusp 0) ⇒ <i>false</i>
(plusp least-positive-single-float) ⇒ <i>true</i>
</pre></div>
<span id="Exceptional-Situations_003a_003a-79"></span><h4 class="subsubheading">Exceptional Situations::</h4>
<p>Should signal an error of <i>type</i> <b>type-error</b>
if <i>real</i> is not a <i>real</i>.
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