<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
	<link rel="stylesheet" type="text/css" href="http://oldforge.etsi.org/mantis/css/default.css" />
	<script type="text/javascript"><!--
		if(document.layers) {document.write("<style>td{padding:0px;}<\/style>")}
	// --></script>
	<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
	<meta http-equiv="Pragma" content="no-cache" />
	<meta http-equiv="Cache-Control" content="no-cache" />
	<meta http-equiv="Pragma-directive" content="no-cache" />
	<meta http-equiv="Cache-Directive" content="no-cache" />
	<meta http-equiv="Expires" content="Tue, 17 Dec 2024 09:17:29 GMT" />
	<link rel="shortcut icon" href="/mantis/images/favicon.ico" type="image/x-icon" />
	<link rel="search" type="application/opensearchdescription+xml" title="MantisBT: Text Search" href="http://oldforge.etsi.org/mantis/browser_search_plugin.php?type=text" />	<link rel="search" type="application/opensearchdescription+xml" title="MantisBT: Issue Id" href="http://oldforge.etsi.org/mantis/browser_search_plugin.php?type=id" />	<title>0006639: Single precision of float value in java mapping - ETSI's Bug Tracker</title>
<script type="text/javascript" src="/mantis/javascript/min/common.js"></script>
<script type="text/javascript">var loading_lang = "Loading...";</script><script type="text/javascript" src="/mantis/javascript/min/ajax.js"></script>
</head>
<body>
<br /><table class="width100" cellspacing="1"><tr><td class="form-title" colspan="6"><div class="center">ETSI's Bug Tracker - Part 06: TTCN-3 Control Interface</div></td></tr><tr><td class="form-title" colspan="6">View Issue Details</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print-category"><td class="print" width="16%">ID</td><td class="print" width="16%">Project</td><td class="print" width="16%">Category</td><td class="print" width="16%">View Status</td><td class="print" width="16%">Date Submitted</td><td class="print" width="16%">Last Update</td></tr><tr class="print"><td class="print">0006639</td><td class="print">Part 06: TTCN-3 Control Interface</td><td class="print">Technical</td><td class="print">public</td><td class="print">10-10-2013 09:20</td><td class="print">23-12-2013 14:05</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print"><td class="print-category">Reporter</td><td class="print">Tomas Urban</td><td class="print" colspan="4">&#160;</td></tr><tr class="print"><td class="print-category">Assigned To</td><td class="print">Ina Schieferdecker</td><td class="print" colspan="4">&#160;</td></tr><tr class="print"><td class="print-category">Priority</td><td class="print">normal</td><td class="print-category">Severity</td><td class="print">minor</td><td class="print-category">Reproducibility</td><td class="print">have not tried</td></tr><tr class="print"><td class="print-category">Status</td><td class="print">closed</td><td class="print-category">Resolution</td><td class="print">fixed</td><td class="print" colspan="2">&#160;</td></tr><tr class="print"><td class="print-category">Platform</td><td class="print"></td><td class="print-category">OS</td><td class="print"></td><td class="print-category">OS Version</td><td class="print"></td></tr><tr class="print"><td class="print-category">Product Version</td><td class="print">v4.5.1 (published 2013-04)</td><td class="print" colspan="4">&#160;</td></tr><tr><td class="print-category">Target Version</td><td class="print">v4.6.1 (published 2014-06)</td><td class="print-category">Fixed in Version</td><td class="print">v4.6.1 (published 2014-06)</td><td class="print" colspan="2">&#160;</td></tr><tr class="print"><td class="print-category">Clause Reference(s)</td><td class="print" colspan="4">8.3.4.3</td></tr><tr class="print"><td class="print-category">Source  (company  - Author)</td><td class="print" colspan="4">Elvior</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print"><td class="print-category">Summary</td><td class="print" colspan="5">0006639: Single precision of float value in java mapping</td></tr><tr class="print"><td class="print-category">Description</td><td class="print" colspan="5">The java mapping of the methods for getting and setting float values (FloatValue.getFloat, FloatValue.setFloat) use single precision numbers. All other mappings use double precision and C# mapping supports lossless (text-based) conversion in addition to that.<br />
<br />
The precision loss connected with converting to 32-bit floats has a negative implact on test case results, especially in complex and repeated calculations and as such, it is not acceptable in some testing environments. Quite recently, we had two cases from airspace and transport industry, when we had to implement XTRI adapters in C# rather than in java because of this limitation.<br />
<br />
Proposal:<br />
Change the parameter and return type from float to double in FloatValue.setFloat and FloatValue.getFloat of java mapping. This change is simple, but it might cause backwards compatibility issues.<br />
<br />
Alternative proposal:<br />
Add new methods to the FloatValue interface:<br />
public void setDouble(double value);<br />
public double getDouble();<br />
<br />
This change doesn't cause any backwards compatibility issues, but the interface won't be as nice as the other interfaces.<br />
<br />
Additional recommendation:<br />
Add methods for setting values without precision loss for testing systems where rounding to 64-bit double precision is not acceptable (if internally supported by the tool):<br />
public void setStringValue(string value);<br />
public string getStringValue();<br />
<br />
Similar methods are described in the C# mapping section.<br />
<br />
</td></tr><tr class="print"><td class="print-category">Steps To Reproduce</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Additional Information</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Tags</td><td class="print" colspan="5">No tags attached.</td></tr><tr class="print"><td class="print-category">Relationships</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Attached Files</td><td class="print" colspan="5"><img src="http://oldforge.etsi.org/mantis/images/fileicons/doc.gif" alt="doc" />&#160;CR6639.doc (367,104) <span class="italic">26-11-2013 12:58</span><br />http://oldforge.etsi.org/mantis/file_download.php?file_id=2940&amp;type=bug</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr><td class="form-title">Issue History</td></tr><tr class="print-category"><td class="row-category-history">Date Modified</td><td class="row-category-history">Username</td><td class="row-category-history">Field</td><td class="row-category-history">Change</td></tr><tr class="print"><td class="print">10-10-2013 09:20</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">New Issue</td><td class="print"></td></tr><tr class="print"><td class="print">10-10-2013 09:20</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">Clause Reference(s)</td><td class="print"> =&gt; 8.3.4.3</td></tr><tr class="print"><td class="print">10-10-2013 09:20</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">Source  (company  - Author)</td><td class="print"> =&gt; Elvior</td></tr><tr class="print"><td class="print">10-10-2013 09:47</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy Rethy</a></td><td class="print">Assigned To</td><td class="print"> =&gt; Jacob Wieland - Spirent</td></tr><tr class="print"><td class="print">10-10-2013 09:47</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy Rethy</a></td><td class="print">Status</td><td class="print">new =&gt; assigned</td></tr><tr class="print"><td class="print">10-10-2013 09:47</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=127">Gyorgy Rethy</a></td><td class="print">Target Version</td><td class="print"> =&gt; v4.6.1 (published 2014-06)</td></tr><tr class="print"><td class="print">10-10-2013 16:02</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob Wieland - Spirent</a></td><td class="print">Note Added: 0011758</td><td class="print"></td></tr><tr class="print"><td class="print">26-11-2013 12:58</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob Wieland - Spirent</a></td><td class="print">File Added: CR6639.doc</td><td class="print"></td></tr><tr class="print"><td class="print">26-11-2013 12:58</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob Wieland - Spirent</a></td><td class="print">Note Added: 0011833</td><td class="print"></td></tr><tr class="print"><td class="print">26-11-2013 12:58</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob Wieland - Spirent</a></td><td class="print">Assigned To</td><td class="print">Jacob Wieland - Spirent =&gt; Ina Schieferdecker</td></tr><tr class="print"><td class="print">26-11-2013 12:58</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob Wieland - Spirent</a></td><td class="print">Status</td><td class="print">assigned =&gt; confirmed</td></tr><tr class="print"><td class="print">23-12-2013 14:05</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina Schieferdecker</a></td><td class="print">Note Added: 0011891</td><td class="print"></td></tr><tr class="print"><td class="print">23-12-2013 14:05</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina Schieferdecker</a></td><td class="print">Status</td><td class="print">confirmed =&gt; resolved</td></tr><tr class="print"><td class="print">23-12-2013 14:05</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina Schieferdecker</a></td><td class="print">Resolution</td><td class="print">open =&gt; fixed</td></tr><tr class="print"><td class="print">23-12-2013 14:05</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina Schieferdecker</a></td><td class="print">Fixed in Version</td><td class="print"> =&gt; v4.6.1 (published 2014-06)</td></tr><tr class="print"><td class="print">23-12-2013 14:05</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina Schieferdecker</a></td><td class="print">Status</td><td class="print">resolved =&gt; closed</td></tr></table>
<br />
<table class="width100" cellspacing="1">
<tr>
	<td class="form-title" colspan="2">
		Notes	</td>
</tr>
<tr>
	<td class="print-spacer" colspan="2">
		<hr size="1" />
	</td>
</tr>
<tr>
	<td class="nopad" valign="top" width="20%">
		<table class="hide" cellspacing="1">
		<tr>
			<td class="print">
				(0011758)
			</td>
		</tr>
		<tr>
			<td class="print">
				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob Wieland - Spirent</a>&#160;&#160;&#160;
			</td>
		</tr>
		<tr>
			<td class="print">
				10-10-2013 16:02&#160;&#160;&#160;
							</td>
		</tr>
		</table>
	</td>
	<td class="nopad" valign="top" width="85%">
		<table class="hide" cellspacing="1">
		<tr>
			<td class="print">
				I think adding getDouble()/setDouble() is the viable way to go.<br />
<br />
I also would add getBigDecimal()/setBigDecimal() for arbitrary precision using java.math.BigDecimal (which allows all decimal operations and easy conversions from/to double and float).			</td>
		</tr>
		</table>
	</td>
</tr>
<tr>
	<td class="print-spacer" colspan="2">
		<hr size="1" />
	</td>
</tr>
<tr>
	<td class="nopad" valign="top" width="20%">
		<table class="hide" cellspacing="1">
		<tr>
			<td class="print">
				(0011833)
			</td>
		</tr>
		<tr>
			<td class="print">
				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=508">Jacob Wieland - Spirent</a>&#160;&#160;&#160;
			</td>
		</tr>
		<tr>
			<td class="print">
				26-11-2013 12:58&#160;&#160;&#160;
							</td>
		</tr>
		</table>
	</td>
	<td class="nopad" valign="top" width="85%">
		<table class="hide" cellspacing="1">
		<tr>
			<td class="print">
				please review			</td>
		</tr>
		</table>
	</td>
</tr>
<tr>
	<td class="print-spacer" colspan="2">
		<hr size="1" />
	</td>
</tr>
<tr>
	<td class="nopad" valign="top" width="20%">
		<table class="hide" cellspacing="1">
		<tr>
			<td class="print">
				(0011891)
			</td>
		</tr>
		<tr>
			<td class="print">
				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=81">Ina Schieferdecker</a>&#160;&#160;&#160;
			</td>
		</tr>
		<tr>
			<td class="print">
				23-12-2013 14:05&#160;&#160;&#160;
							</td>
		</tr>
		</table>
	</td>
	<td class="nopad" valign="top" width="85%">
		<table class="hide" cellspacing="1">
		<tr>
			<td class="print">
				as proposed			</td>
		</tr>
		</table>
	</td>
</tr>
</table>
</body>
</html>
