From a5fa843c746e20aaca48ece6cff057deb8d916ca Mon Sep 17 00:00:00 2001
From: Michiharu Ariza <ariza@adobe.com>
Date: Wed, 5 Dec 2018 11:18:16 -0800
Subject: [PATCH] fixed a bug with fractional part in a negative value

---
 src/hb-cff-interp-dict-common.hh | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/hb-cff-interp-dict-common.hh b/src/hb-cff-interp-dict-common.hh
index 005e15e60..63ca685ec 100644
--- a/src/hb-cff-interp-dict-common.hh
+++ b/src/hb-cff-interp-dict-common.hh
@@ -146,7 +146,11 @@ struct DictOpSet : OpSet<Number>
 	case END:
 	  value = (double)(neg? -int_part: int_part);
 	  if (frac_count > 0)
-	    value += (frac_part / pow (10.0, (double)frac_count));
+	  {
+	    double frac = (frac_part / pow (10.0, (double)frac_count));
+	    if (neg) frac = -frac;
+	    value += frac;
+	  }
 	  if (unlikely (exp_overflow))
 	  {
 	    if (value == 0.0)