projects / deliverable / titan.core.git / blame
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1 | <!-- |
| 2 | Copyright (c) 2000-2014 Ericsson Telecom AB | |
| 3 | ||
| 4 | All rights reserved. This program and the accompanying materials | |
| 5 | are made available under the terms of the Eclipse Public License v1.0 | |
| 6 | which accompanies this distribution, and is available at | |
| 7 | http://www.eclipse.org/legal/epl-v10.html | |
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| 9 | <html> | |
| 10 | <head> | |
| 11 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| 12 | <meta http-equiv="Content-Language" content="en-us"> | |
| 13 | <title>rnd</title> | |
| 14 | </head> | |
| 15 | <body bgcolor="#DAD3C5" vlink="#0094D2" link="#003258"> | |
| 16 | <table align="left" border="0" cellspacing="0" cellpadding="0" valign=top> | |
| 17 | <tr> | |
| 18 | <td width=105 height=40><a href="https://projects.eclipse.org/projects/tools.titan"><img src="../images/titan_transparent.gif" border=0 width=105 height=40 align="left" alt="Titan"></a></td> | |
| 19 | </tr> | |
| 20 | </table> | |
| 21 | <table border="0" align="right" cellpadding="0" cellspacing="0"> | |
| 22 | <tr> | |
| 23 | <td><a href="../titan_main.html" alt="contents"><img border="0" src="../images/ao.jpg" width="53" height="40"></a></td> | |
| 24 | <td><a href="../titan_index.html" alt="index"><img border="0" src="../images/up.jpg" width="53" height="40"></a></td> | |
| 25 | <td><a alt="previous" href="return.html"><img border="0" src="../images/left.jpg" width="53" height="40"></a></td> | |
| 26 | <td><a alt="next" href="running.html"><img border="0" src="../images/right.jpg" width="53" height="40"></a></td> | |
| 27 | </tr> | |
| 28 | </table> | |
| 29 | <p><br clear="all"> | |
| 30 | </p> | |
| 31 | <hr> | |
| 32 | <h1>rnd</h1> | |
| 33 | <hr align="left" width="75%"> | |
| 34 | <p>The <b><font face="Courier New">rnd</font></b> function returns a (pseudo) random number less than 1 but greater or equal to 0. The random number generator is initialized by means of an | |
| 35 | optional seed value. Afterwards, if no new seed is provided, the last generated number will be used as seed for the next random number. Without a previous initialization a value calculated from the | |
| 36 | system time will be used as seed value when <b><font face="Courier New">rnd</font></b> is used the first time. | |
| 37 | <hr align="left" width="50%"> | |
| 38 | <p>Related keyword:</p> | |
| 39 | <ul> | |
| 40 | <li><b><font face="Courier New" size="4" color="#003258"> <a href="float.html">float</a></font></b></li> | |
| 41 | </ul> | |
| 42 | <hr align="left" width="50%"> | |
| 43 | <div align="center"> | |
| 44 | <center> | |
| 45 | <table border="0" width="90%" bgcolor="#FFB599" cellpadding="4"> | |
| 46 | <tr> | |
| 47 | <td width="100%"> | |
| 48 | <h3 align="center"><font face="Courier New" color="#003258" size="5"><b>rnd</b></font><font face="Courier New" color="#003258" size="5"><b>(</b></font>[<b>float</b><i> seed</i>]<font | |
| 49 | face="Courier New" color="#003258" size="5"><b>) return float</b></font></h3> | |
| 50 | </td> | |
| 51 | </tr> | |
| 52 | </table> | |
| 53 | </center> | |
| 54 | </div> | |
| 55 | <ul> | |
| 56 | <li> | |
| 57 | <p>Each time the <b><font face="Courier New">rnd</font></b> function is initialized with the same seed value, it shall repeat the same sequence of random numbers.</p> | |
| 58 | </li> | |
| 59 | </ul> | |
| 60 | <hr align="left" width="25%"> | |
| 61 | <p>Example 1:</p> | |
| 62 | <p><font face="Courier New"> var float v_veeletlen := rnd( 1.9 ); </font></p> | |
| 63 | <p>The variable v_veeletlen will have a random initial value between 0 and 1. The argument of the function is an optional seed value used for the first time random value calculation. If it is | |
| 64 | omitted, the system time will be used as seed. | |
| 65 | <hr align="left" width="25%"> | |
| 66 | </body> | |
| 67 | </html> |