summaryrefslogtreecommitdiff
path: root/lib/rational.rb
diff options
context:
space:
mode:
authormatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-01-20 04:59:39 +0000
committermatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>1999-01-20 04:59:39 +0000
commit210367ec889f5910e270d6ea2c7ddb8a8d939e61 (patch)
treefeb35473da45947378fbc02defe39bcd79ef600e /lib/rational.rb
parent9c5b1986a36c7a700b4c76817e35aa874ba7907c (diff)
This commit was generated by cvs2svn to compensate for changes in r372,
which included commits to RCS files with non-trunk default branches. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@373 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib/rational.rb')
-rw-r--r--lib/rational.rb9
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/rational.rb b/lib/rational.rb
index d4112c2..1282f56 100644
--- a/lib/rational.rb
+++ b/lib/rational.rb
@@ -1,8 +1,8 @@
#
# rational.rb -
# $Release Version: 0.5 $
-# $Revision: 1.1 $
-# $Date: 1996/11/11 04:25:14 $
+# $Revision: 1.3 $
+# $Date: 1998/03/11 14:09:03 $
# by Keiju ISHITSUKA(SHL Japan Inc.)
#
# --
@@ -44,7 +44,11 @@ def Rational(a, b = 1)
end
class Rational < Numeric
+ @RCS_ID='-$Id: rational.rb,v 1.3 1998/03/11 14:09:03 keiju Exp keiju $-'
+
def Rational.reduce(num, den = 1)
+ raise ZeroDivisionError, "denometor is 0" if den == 0
+
if den < 0
num = -num
den = -den
@@ -128,6 +132,7 @@ class Rational < Numeric
den = @denominator * a.numerator
Rational(num, den)
elsif a.kind_of?(Integer)
+ raise ZeroDivisionError, "devided by 0" if a == 0
self / Rational.new!(a, 1)
elsif a.kind_of?(Float)
Float(self) / a