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description: fix a floating point quirk that is exposed by gcc 4.4
(this was leading to slow pdf document scrolling on i386)
author: Michael Gilbert <michael.s.gilbert@gmail.com>
bug-debian: http://bugs.debian.org/577031
--- xpdf-3.02.orig/xpdf/PDFCore.h
+++ xpdf-3.02/xpdf/PDFCore.h
@@ -40,6 +40,7 @@ class PDFCore;
#define zoomPage -1
#define zoomWidth -2
#define defZoom 125
+#define EPSILON 1.0e-7 // 32-bit floating point machine precision
//------------------------------------------------------------------------
--- xpdf-3.02.orig/xpdf/PDFCore.cc
+++ xpdf-3.02/xpdf/PDFCore.cc
@@ -445,7 +445,7 @@ void PDFCore::update(int topPageA, int s
// object
if (force || pages->getLength() == 0 ||
(!continuousMode && topPageA != topPage) ||
- zoomA != zoom || dpiA != dpi || rotateA != rotate) {
+ zoomA != zoom || fabs( dpiA - dpi ) > EPSILON || rotateA != rotate) {
needUpdate = gTrue;
setSelection(0, 0, 0, 0, 0);
while (pages->getLength() > 0) {
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