From 9542c08d62297509a5097a3800478013c2534379 Mon Sep 17 00:00:00 2001
From: mayeut <mayeut@users.noreply.github.com>
Date: Thu, 15 Oct 2015 15:52:01 +0200
Subject: [PATCH] Don't rely on float equality

Fix #591
---
 libopenjpeg/tcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libopenjpeg/tcd.c b/libopenjpeg/tcd.c
index 62904eb2..190d7f99 100644
--- a/libopenjpeg/tcd.c
+++ b/libopenjpeg/tcd.c
@@ -988,7 +988,7 @@ void tcd_makelayer(opj_tcd_t *tcd, int layno, double thresh, int final) {
 									n = passno + 1;
 								continue;
 							}
-							if (dd / dr >= thresh)
+							if (thresh - (dd / dr) < DBL_EPSILON) /* do not rely on float equality, check with DBL_EPSILON margin */
 								n = passno + 1;
 						}
 						layer->numpasses = n - cblk->numpassesinlayers;