Bug #141: Rational#power2 loops when the argument is 0

• Status: Closed
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -

[krsh (Gianluigi Spagnuolo)]

=begin
Rational#power2, when passed Rational, loop if the argument is 0.

For example:

Rational.new!(3, 4).power2(Rational.new!(0, 3))
=end

[shyouhei (Shyouhei Urabe)]

=begin
Gianluigi Spagnuolo wrote:

Rational#power2, when passed Rational, loop if the argument is 0.

For example:

Rational.new!(3, 4).power2(Rational.new!(0, 3))

That's because you're using unrecommended new! and undocumented power2,
both are not expected to be used.
Rational(3, 4) ** Rational(0, 3) should return immediately.

Index: lib/mathn.rb

--- lib/mathn.rb (revision 17088)
+++ lib/mathn.rb (working copy)
@@ -186,6 +186,7 @@

def power2(other)
  if other.kind_of?(Rational)

•  other = Rational.reduce(other.numerator, other.denominator)
   if self < 0
    return Complex(self, 0) ** other
   elsif other == 0
  

=end

[matz (Yukihiro Matsumoto)]

• Status changed from Open to Closed
• Assignee set to matz (Yukihiro Matsumoto)

=begin

=end