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<meta>
<topic id="textsbasicshared03080302xml" indexer="include" status="PUBLISH">
<title id="tit" xml-lang="en-US">Rnd Function</title>
<filename>/text/sbasic/shared/03080302.xhp</filename>
</topic>
</meta>
<body>
<section id="rnd">
<bookmark xml-lang="en-US" branch="index" id="bm_id3148685">
<bookmark_value>Rnd function</bookmark_value>
</bookmark>
<paragraph id="hd_id3148685" role="heading" level="1" xml-lang="en-US"><variable id="heading_rnd"><link href="text/sbasic/shared/03080302.xhp" name="Rnd Function">Rnd Function</link></variable></paragraph>
<paragraph id="par_id3149669" role="paragraph" xml-lang="en-US">Returns a random number between 0 and 1.</paragraph>
</section>
<paragraph id="hd_id3153897" role="heading" level="2" xml-lang="en-US">Syntax:</paragraph>
<bascode>
<paragraph id="par_id3150543" role="bascode" xml-lang="en-US">Rnd [(Expression)]</paragraph>
</bascode>
<paragraph id="hd_id3149655" role="heading" level="2" xml-lang="en-US">Return value:</paragraph>
<paragraph id="par_id3154365" role="paragraph" xml-lang="en-US">Double</paragraph>
<paragraph id="hd_id3154909" role="heading" level="2" xml-lang="en-US">Parameters:</paragraph>
<paragraph id="par_id3125864" role="paragraph" xml-lang="en-US"> <emph>Expression:</emph> Has no effect, is ignored if provided.</paragraph>
<paragraph id="par_id3147318" role="paragraph" xml-lang="en-US">The <emph>Rnd</emph> function returns decimal fractions ranging from 0 (included) to 1 (excluded) according to a uniform distribution. It uses the Mersenne Twister 19937 random-number generator. To generate random integers in a given range, use a formula like in the example below. A <emph>Randomize</emph> statement with a defined seed value can be used beforehand, if a predictable sequence of numbers is desired.</paragraph>
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<paragraph id="hd_id3151118" role="heading" level="2" xml-lang="en-US">Example:</paragraph>
<bascode>
<paragraph id="par_idm1341382704" role="bascode" localize="false" xml-lang="en-US">Sub ExampleRandomSelect</paragraph>
<paragraph id="par_idm1341381472" role="bascode" localize="false" xml-lang="en-US">Dim iVar As Integer</paragraph>
<paragraph id="par_idm1341380240" role="bascode" localize="false" xml-lang="en-US"> iVar = Int((15 * Rnd) -2)</paragraph>
<paragraph id="par_idm1341378992" role="bascode" localize="false" xml-lang="en-US"> Select Case iVar</paragraph>
<paragraph id="par_idm1341377760" role="bascode" localize="false" xml-lang="en-US"> Case 1 To 5</paragraph>
<paragraph id="par_id3147124" role="bascode" xml-lang="en-US"> Print "Number from 1 to 5"</paragraph>
<paragraph id="par_idm1341374800" role="bascode" localize="false" xml-lang="en-US"> Case 6, 7, 8</paragraph>
<paragraph id="par_id3154943" role="bascode" xml-lang="en-US"> Print "Number from 6 to 8"</paragraph>
<paragraph id="par_idm1341371792" role="bascode" localize="false" xml-lang="en-US"> Case Is > 8 And iVar < 11</paragraph>
<paragraph id="par_id3151074" role="bascode" xml-lang="en-US"> Print "Greater than 8"</paragraph>
<paragraph id="par_idm1341368768" role="bascode" localize="false" xml-lang="en-US"> Case Else</paragraph>
<paragraph id="par_id3155602" role="bascode" xml-lang="en-US"> Print "Outside range 1 to 10"</paragraph>
<paragraph id="par_idm1341365792" role="bascode" localize="false" xml-lang="en-US"> End Select</paragraph>
<paragraph id="par_idm1341364560" role="bascode" localize="false" xml-lang="en-US">End Sub</paragraph>
</bascode>
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