note BrowserUk <blockquote><i> How can I force it to work correct on perl based 64 ?</i></blockquote> <p>It gets very messy. <P>Effectively you have to mask the resultant from operation after any operation that might cause the resultant to be promoted to more than 32 bits. eg.<code> C:\test>\perl32\bin\perl -le"print 11 | 29 | ~15" 4294967295 C:\test>\perl64\bin\perl -le"print 11 | 29 | ~15" 18446744073709551615 C:\test>\perl64\bin\perl -le"print 11 | 29 | ( ~15 & 0xffffffff )" 4294967295 </code> <p>And if you are manipulating signed rather than unsigned values it gets really tiresome. <p>I don't know of a good solution to this problem. <div class="pmsig"><div class="pmsig-171588"> <hr /> <font size=1 > <div>With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'</div> <div>Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.</div> <div>"Science is about questioning the status quo. Questioning authority". </div> <div>In the absence of evidence, opinion is indistinguishable from prejudice. <p align=right>[http://www.theregister.co.uk/2011/11/29/sas_versus_world_programming/|The start of some sanity?]</p></div> </font> </div></div> 947353 947353