<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.E-mailStijl17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="NL" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal">Hi Eike,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Upon debugging IFS( 0, NA(), 1+0, "output" ) I came to the following preliminary conclusions:<o:p></o:p></p>
<p class="MsoNormal">Before ScInterpreter::ScIfs_MS() is called, ScInterpreter::Interpret is called for argument '1+0' .<o:p></o:p></p>
<p class="MsoNormal">That leads to a call to scInterpreter::CalculateAddSub( false ) and there the problem starts.<o:p></o:p></p>
<p class="MsoNormal">0 and 1 are popped and added, but after PushDouble( ::rtl::math::approxAdd( 0, 1 ) )<o:p></o:p></p>
<p class="MsoNormal">the raw stacktype is svError.<o:p></o:p></p>
<p class="MsoNormal">Unfortunately most of the time I have only a machine with 4GB available for debugging, giving 5 minutes max before freezing, so the simple question what the raw stacktype is before PushDouble (when NA() is on top of the stack) will take
me up to an hour -which I don't have right now.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Do you happen to know if in the case of a token on top of the stack of type svError (like NA()), this stacktype is remained when pushing new values/tokens to the stack?<o:p></o:p></p>
<p class="MsoNormal">If that is the case, I wouldn't know a proper way to fix this, unless there are no use cases where this behaviour is desired.<o:p></o:p></p>
<p class="MsoNormal">Any thoughts?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL">Winfried<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>