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Strip comments and inline ids onto h*

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James Gregory 2013-12-30 15:11:04 +11:00
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09-06.html
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@ -10,16 +10,9 @@
<meta name="vspubdate" content="07/01/97" />
<meta name="vscategory" content="Web and Software Development: Game Development,Web and Software Development: Graphics and Multimedia Development" />
<title>Michael Abrash's Graphics Programming Black Book Special Edition: Hints My Readers Gave Me</title><!-- HEADER -->
<!-- Empty Reference Subhead -->
<!--ISBN=1576101746//-->
<!--TITLE=Michael Abrash's Graphics Programming Black Book Special Edition//-->
<!--AUTHOR=Michael Abrash//-->
<!--PUBLISHER=The Coriolis Group, Inc.//-->
<title>Michael Abrash's Graphics Programming Black Book Special Edition: Hints My Readers Gave Me</title>
<meta name="chapter" content="09" />
<meta name="pages" content="182-185" />
<!--UNASSIGNED1//-->
<!--UNASSIGNED2//-->
</head>
<body>
@ -37,7 +30,7 @@
<p><br /></p>
<p><b>LISTING 9.5 L9-5.ASM</b></p><!-- CODE //-->
<p><b>LISTING 9.5 L9-5.ASM</b></p>
<pre>
; Divides an arbitrarily long unsigned dividend by a 16-bit unsigned
; divisor. C near-callable as:
@ -105,9 +98,9 @@ DivLoop:
ret
_Divendp
end
</pre><!-- END CODE //-->
</pre>
<p><b>LISTING 9.6 L9-6.C</b></p><!-- CODE //-->
<p><b>LISTING 9.6 L9-6.C</b></p>
<pre>
/* Sample use of Div function to perform division when the result
doesn&rsquo;t fit in 16 bits */
@ -125,9 +118,9 @@ main() {
k = Div((unsigned int *)&amp;i, sizeof(i), j, (unsigned int *)&amp;m);
printf(&ldquo;%lu / %u = %lu r %u\n&rdquo;, i, j, m, k);
}
</pre><!-- END CODE //-->
</pre>
<h4 align="left"><a id="Heading9"></a>Sweet Spot Revisited</h4>
<h4 align="left" id="Heading9">Sweet Spot Revisited</h4>
<p>Way back in Volume 1, Number 1 of <i>PC TECHNIQUES</i>, (April/May 1990) I wrote the very first of that magazine&rsquo;s HAX (#1), which extolled the virtues of placing your most commonly-used automatic (stack-based) variables within the stack&rsquo;s &ldquo;sweet spot,&rdquo; the area between +127 to -128 bytes away from BP, the stack frame pointer. The reason was that the 8088 can store addressing displacements that fall within that range in a single byte; larger displacements require a full word of storage, increasing code size by a byte per instruction, and thereby slowing down performance due to increased instruction fetching time.</p>
@ -162,10 +155,6 @@ main() {
<div align="center">
Graphics Programming Black Book &copy; 2001 Michael Abrash
</div><!-- all of the reference materials (books) have the footer and subfoot reveresed -->
<!-- reference_subfoot = footer -->
<!-- reference_footer = subfoot -->
<!-- BEGIN SUB FOOTER -->
<!-- END FOOTER -->
</div>
</body>
</html>