From e7fe5648cf10528422ce720b50c8641bd5d8c267 Mon Sep 17 00:00:00 2001
From: mrkn <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 13 Jan 2014 17:29:58 +0000
Subject: * ext/bigdecimal/bigdecimal.c (BigDecimal_divide): Add an additional 
  digit for the quotient to be compatible with bigdecimal 1.2.1 and   the
 former.  [ruby-core:59365] [#9316] [#9305]

* test/bigdecimal/test_bigdecimal.rb: tests for the above change.

* ext/bigdecimal/bigdecimal.gemspec: bigdecimal version 1.2.4.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44588 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/bigdecimal/bigdecimal.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'ext/bigdecimal/bigdecimal.c')

diff --git a/ext/bigdecimal/bigdecimal.c b/ext/bigdecimal/bigdecimal.c
index 5af8441300..c7d9945a15 100644
--- a/ext/bigdecimal/bigdecimal.c
+++ b/ext/bigdecimal/bigdecimal.c
@@ -1222,8 +1222,10 @@ BigDecimal_divide(Real **c, Real **res, Real **div, VALUE self, VALUE r)
 
     *div = b;
     mx = a->Prec + vabs(a->exponent);
-    if (mx<b->Prec + vabs(b->exponent)) mx = b->Prec + vabs(b->exponent);
-    mx =(mx + 1) * VpBaseFig();
+    if (mx < b->Prec + vabs(b->exponent)) mx = b->Prec + vabs(b->exponent);
+    mx++; /* NOTE: An additional digit is needed for the compatibility to
+                   the version 1.2.1 and the former.  */
+    mx = (mx + 1) * VpBaseFig();
     GUARD_OBJ((*c), VpCreateRbObject(mx, "#0"));
     GUARD_OBJ((*res), VpCreateRbObject((mx+1) * 2 +(VpBaseFig() + 1), "#0"));
     VpDivd(*c, *res, a, b);
-- 
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