From bb89ebb6047ceb894188ff8a3a803210d4ee26c0 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Fri, 15 Jul 2016 17:07:28 +0200
Subject: partial_sim: Fix rounding for sketches

---
 src/partial_sim.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'src/partial_sim.c')

diff --git a/src/partial_sim.c b/src/partial_sim.c
index ae448ba8..b5407213 100644
--- a/src/partial_sim.c
+++ b/src/partial_sim.c
@@ -215,12 +215,13 @@ static void draw_and_write_image(struct image *image, RefList *reflections,
 		pn = panel_number(image->det, p);
 		assert(pn != image->det->n_panels);
 
-		fs = nearbyint(dfs);
-		ss = nearbyint(dss);
+		/* Explicit rounding, downwards */
+		fs = dfs;  ss = dss;
 		assert(fs >= 0);
 		assert(ss >= 0);
 		assert(fs < p->w);
 		assert(ss < p->h);
+
 		image->dp[pn][fs + p->w*ss] += Ip;
 
 	}
-- 
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