Spec for div changed.

add,sub,mult,div now can specify exact digits number.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4154 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 5 insertions, 6 deletions

diff --git a/ext/bigdecimal/lib/bigdecimal/util.rb b/ext/bigdecimal/lib/bigdecimal/util.rb
index d9b7ae3131..369fe3fdd0 100644
--- a/ext/bigdecimal/lib/bigdecimal/util.rb
+++ b/ext/bigdecimal/lib/bigdecimal/util.rb
@@ -63,7 +63,6 @@ end
 
 class Rational < Numeric
   # Convert Rational to BigDecimal
-  # to_d returns an array [quotient,residue]
   def to_d(nFig=0)
      num = self.numerator.to_s
      if nFig<=0
diff --git a/ext/bigdecimal/sample/pi.rb b/ext/bigdecimal/sample/pi.rb
index cbb8448a38..833967a583 100644
--- a/ext/bigdecimal/sample/pi.rb
+++ b/ext/bigdecimal/sample/pi.rb
@@ -20,9 +20,9 @@ def big_pi(sig) # sig: Number of significant figures
   k = BigDecimal::new("1")
   w = BigDecimal::new("1")
   t = BigDecimal::new("-80")
-  while (u.exponent >= exp) 
+  while (u.nonzero? && u.exponent >= exp) 
     t   = t*m25
-    u,r = t.div(k,sig)
+    u   = t.div(k,sig)
     pi  = pi + u
     k   = k+two
   end
@@ -31,9 +31,9 @@ def big_pi(sig) # sig: Number of significant figures
   k = BigDecimal::new("1")
   w = BigDecimal::new("1")
   t = BigDecimal::new("956")
-  while (u.exponent >= exp )
-    t,r = t.div(m57121,sig)
-    u,r = t.div(k,sig)
+  while (u.nonzero? && u.exponent >= exp )
+    t   = t.div(m57121,sig)
+    u   = t.div(k,sig)
     pi  = pi + u
     k   = k+two
   end