<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 2010-01-13, at 10:20 AM, Eliot Miranda wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">BTW, there's clearly an exception for format = 7 which is supposed to be 64-bit longs. So lengthOf:baseheader:format: looks wrong for 64-bit images. It needs to say something like<div><br></div><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>fmt <= 4</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>ifTrue: [ ^ (sz - BaseHeaderSize) >> ShiftForWord "words"].</div><div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>fmt = 7</div>
<div><span class="Apple-tab-span" style="white-space: pre; "> </span>ifTrue: [ ^ (sz - BaseHeaderSize) >> 3 "64-bit longs"].</div></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>fmt < 8</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>ifTrue: [ ^ (sz - BaseHeaderSize) >> 2 "32-bit longs"]</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>ifFalse: [ ^ (sz - BaseHeaderSize) - (fmt bitAnd: 3) "bytes"]</div>
<div><br></div><div>or format = 7 needs to be documented as being unused.</div></div></blockquote></div><div><br></div>The work to add longer immediate integer types, floats, wasn't done so no-doubt that fmt = 7 *would* be used for something. <br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: 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: 0; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; 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; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; 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; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font: normal normal normal 12px/normal Helvetica; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">--</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">===========================================================================</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">John M. McIntosh <<a href="mailto:johnmci@smalltalkconsulting.com">johnmci@smalltalkconsulting.com</a>> Twitter: squeaker68882</font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">Corporate Smalltalk Consulting Ltd. <a href="http://www.smalltalkconsulting.com">http://www.smalltalkconsulting.com</a></font></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font face="Helvetica" size="3" style="font: normal normal normal 12px/normal Helvetica; ">===========================================================================</font></div><div><br></div></div></div></div></div></div></span></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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