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<TITLE>Tcl API Reference -- ns_rand</TITLE>
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<a name="235740">
</a><h3>ns_rand</h3>
<a name="235939">
</a><h4>Overview</h4>
<p><a name="235944">
</a>Generate a random number</p>
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</a><h4>Syntax</h4>
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</a><b>ns_rand</b> ?<i>max</i>?</p>
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</a><h4>Description</h4>
<p><a name="235951">
</a>This function generates a random number. If <i>max</i> is not specified, the random number is a floating-point value ranging from 0.0 to less than 1.0. If <i>max</i> is specified, the random number is an integer value ranging from 0 to one less than <i>max</i>. The <i>max</i> argument must be a positive number no larger than 2147483647 (0x7fffffff).</p>
<p><a name="235956">
</a><b>ns_rand</b> is implemented with the drand48(3) and lrand48(3) standard library functions. An internal random seed is generated the first time <b>ns_rand</b> is called after the server is started.</p>
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