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<h2><a name="bsearch" id="bsearch">bsearch</a></h2>
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<p>
Syntax:
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<pre class="c code c++" style="font-family:monospace;"> <span class="co2">#include <cstdlib></span>
<span class="kw4">void</span> <span class="sy0">*</span>bsearch<span class="br0">(</span> <span class="kw4">const</span> <span class="kw4">void</span> <span class="sy0">*</span>key<span class="sy0">,</span> <span class="kw4">const</span> <span class="kw4">void</span> <span class="sy0">*</span>buf<span class="sy0">,</span> size_t num<span class="sy0">,</span> size_t size<span class="sy0">,</span>
<span class="kw4">int</span> <span class="br0">(</span><span class="sy0">*</span>compare<span class="br0">)</span><span class="br0">(</span><span class="kw4">const</span> <span class="kw4">void</span> <span class="sy0">*,</span> <span class="kw4">const</span> <span class="kw4">void</span> <span class="sy0">*</span><span class="br0">)</span> <span class="br0">)</span><span class="sy0">;</span></pre>
<p>
The bsearch() function searches buf[0] to buf[num-1] for an item that matches
key, using a binary search. The function compare should return negative if its
first argument is less than its second, zero if equal, and positive if greater.
The items in the array buf should be in ascending order. The return value of
bsearch() is a pointer to the matching item, or NULL if none is found.
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