From d74d488cd4e2e5d6e0d340cea8b99fc880459244 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <carl@carlh.net>
Date: Sat, 26 Feb 2011 22:52:24 +0000
Subject: [PATCH] Add comment about some inaccuracies in framepos_plus_bbt.

git-svn-id: svn://localhost/ardour2/branches/3.0@8972 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/ardour/tempo.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libs/ardour/tempo.cc b/libs/ardour/tempo.cc
index c5c60b948e..396caad46b 100644
--- a/libs/ardour/tempo.cc
+++ b/libs/ardour/tempo.cc
@@ -1906,6 +1906,12 @@ TempoMap::bbt_subtract (const BBT_Time& start, const BBT_Time& decrement) const
 framepos_t
 TempoMap::framepos_plus_bbt (framepos_t pos, BBT_Time op) const
 {
+	/* XXX: this is a little inaccurate as small errors are introduced
+	   every time a probably-fractional product of something and
+	   frames_per_beat is rounded.  Other errors can be introduced
+	   by op.ticks' integer nature.
+	*/
+	
 	Metrics::const_iterator i;
 	const MeterSection* meter;
 	const MeterSection* m;