<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Mac OS X also provides routines for byteswapping- for this case CFSwapInt32() which calls through to __DARWIN_OSSwapInt32()- but I don't know if they would be any more efficient than the macro version.<div><br></div><div>Stephen</div><div><br><div><div>On Feb 5, 2012, at 4:41 AM, Erik de Castro Lopo wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">_byteswap_</span></blockquote></div><br></div></body></html>