<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">What is the endianness of your platform? I think that the big endian code in JavaScriptCore may have rotted.<div><br></div><div>This smells to me like the tag and payload getting flipped around, which might happen if there are parts of the code that are assuming little endian and your hardware is big endian.</div><div><br></div><div>-F</div><div><br></div><div><br></div><div><br><div><div>On Aug 1, 2012, at 11:47 PM, <a href="mailto:talking1239@gmail.com">talking1239@gmail.com</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="line-height: 1.7; font-size: 14px; font-family: arial; "><div id="isForwardContent"><div style="line-height: 1.7; font-size: 14px; font-family: arial; "><p class="MsoPlainText">Hi,</p><p class="MsoPlainText"><span style="color: rgb(31, 73, 125); font-family: Calibri, sans-serif; ">I have test with follow case, and cann't get correct reslut. I find that Floating-point operations is error, and I don't know where shold start to fixed this question. so if anybody can give some information for which function i should to check. </span></p><div>
<br class="webkit-block-placeholder"></div><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D">Any help explaining this would be much
appreciated!</span><span lang="EN-US"><o:p></o:p></span></p><div><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D"></span><br class="webkit-block-placeholder"></div><p class="MsoPlainText" style="font-family: arial; ">My Compiler:<span class="Apple-tab-span" style="white-space: pre; "> </span>MSVS</p><p class="MsoPlainText" style="font-family: arial; ">ARCH:<span class="Apple-tab-span" style="white-space: pre; "> </span>SH4</p><p class="MsoPlainText" style="font-family: arial; ">Feature:<span class="Apple-tab-span" style="white-space: pre; "> </span>JIT</p><div><br class="webkit-block-placeholder"></div><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D"><br></span></p><p class="MsoPlainText"><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D">Javascript code of test case </span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D">function jitTestCode() {</span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D"> var tmp = -1*0;</span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:red"> debug("tmp:" + tmp); </span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D"> var result = tmp + 1;</span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:red"> debug("The result should be 1,result:" +
result); //print</span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D"> var item1 = result - 1;</span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:red"> debug("The item1 should be 0,item1:" +
item1); </span><span lang="EN-US"><o:p></o:p></span><span style="color: rgb(255, 0, 0); font-family: Calibri, sans-serif; ">//print</span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D"> var item2 = result - 2;</span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:red"> debug("The item2 should be -1,item2:" +
item2); </span><span lang="EN-US"><o:p></o:p></span><span style="color: rgb(255, 0, 0); font-family: Calibri, sans-serif; ">//print</span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D">}</span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D"> </span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-family:"Calibri","sans-serif";
color:#1F497D">And the log information are: </span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:細明體;
color:windowtext">[CONSOLE-DEBUG]Message is :'tmp:0' </span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:細明體;
color:windowtext">[CONSOLE-DEBUG]Message is :'The result should be
1,result:0.0078125' </span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:細明體;
color:windowtext">[CONSOLE-DEBUG]Message is :'The item1 should be 0,item1:0'</span><span lang="EN-US"><o:p></o:p></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:9.0pt;font-family:細明體;
color:windowtext">[CONSOLE-DEBUG]Message is :'The item2 should be
-1,item2:-0.0078125'</span><span lang="EN-US"><o:p></o:p></span></p><br><div>--<br><div><span style="border-collapse: separate; font-size: medium; line-height: normal; font-family: Simsun; " class="Apple-style-span"><span style="font-size: 12px;" class="Apple-style-span"></span></span><div><span style="font-size: 14px; font-family: Verdana;">BGs/</span><span style="font-size: 14px; font-family: Verdana;">Felix Shi</span></div></div></div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span></div></div><br><br><span title="neteasefooter"><span id="netease_mail_footer"></span></span>_______________________________________________<br>webkit-dev mailing list<br><a href="mailto:webkit-dev@lists.webkit.org">webkit-dev@lists.webkit.org</a><br>http://lists.webkit.org/mailman/listinfo/webkit-dev<br></blockquote></div><br></div></body></html>