mrkn	2013-06-01 01:59:09 +0900 (Sat, 01 Jun 2013)

  New Revision: 41008

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=41008

  Log:
    * ext/bigdecimal/bigdecimal.c (BigDecimal_power): use rb_dbl2big
      to convert a double value to a Bignum.

  Modified files:
    trunk/ChangeLog
    trunk/ext/bigdecimal/bigdecimal.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 41007)
+++ ChangeLog	(revision 41008)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Sat Jun 01 01:50:00 2013  Kenta Murata  <mrkn@m...>
+
+	* ext/bigdecimal/bigdecimal.c (BigDecimal_power): use rb_dbl2big
+	  to convert a double value to a Bignum.
+
 Sat Jun  1 00:19:50 2013  Tanaka Akira  <akr@f...>
 
 	* bignum.c (calc_hbase): Make hbase the maximum power of base
Index: ext/bigdecimal/bigdecimal.c
===================================================================
--- ext/bigdecimal/bigdecimal.c	(revision 41007)
+++ ext/bigdecimal/bigdecimal.c	(revision 41008)
@@ -2183,7 +2183,12 @@ retry: https://github.com/ruby/ruby/blob/trunk/ext/bigdecimal/bigdecimal.c#L2183
       case T_FLOAT:
 	d = RFLOAT_VALUE(vexp);
 	if (d == round(d)) {
-	    vexp = LL2NUM((LONG_LONG)round(d));
+	    if (FIXABLE(d)) {
+		vexp = LONG2FIX((long)d);
+	    }
+	    else {
+		vexp = rb_dbl2big(d);
+	    }
 	    goto retry;
 	}
 	exp = GetVpValueWithPrec(vexp, DBL_DIG+1, 1);

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