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* complex.c (nucomp_rationalize) added. [experimental]

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* rational.c ({nurat,nilclass,integer,float}_rationalize) ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24565 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
tadf 2009-08-16 23:17:14 +00:00
parent 01971cad75
commit df21038777
4 changed files with 301 additions and 0 deletions
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55
test/ruby/test_rational.rb
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@ -964,6 +964,61 @@ class Rational_Test < Test::Unit::TestCase
end
end
def test_rationalize
c = nil.rationalize
assert_equal([0,1], [c.numerator, c.denominator])
c = 0.rationalize
assert_equal([0,1], [c.numerator, c.denominator])
c = 1.rationalize
assert_equal([1,1], [c.numerator, c.denominator])
c = 1.1.rationalize
assert_equal([11, 10], [c.numerator, c.denominator])
c = Rational(1,2).rationalize
assert_equal([1,2], [c.numerator, c.denominator])
assert_equal(nil.rationalize(Rational(1,10)), Rational(0))
assert_equal(0.rationalize(Rational(1,10)), Rational(0))
assert_equal(10.rationalize(Rational(1,10)), Rational(10))
r = 0.3333
assert_equal(r.rationalize, Rational(3333, 10000))
assert_equal(r.rationalize(Rational(1,10)), Rational(1,3))
assert_equal(r.rationalize(Rational(-1,10)), Rational(1,3))
r = Rational(5404319552844595,18014398509481984)
assert_equal(r.rationalize, r)
assert_equal(r.rationalize(Rational(1,10)), Rational(1,3))
assert_equal(r.rationalize(Rational(-1,10)), Rational(1,3))
r = -0.3333
assert_equal(r.rationalize, Rational(-3333, 10000))
assert_equal(r.rationalize(Rational(1,10)), Rational(-1,3))
assert_equal(r.rationalize(Rational(-1,10)), Rational(-1,3))
r = Rational(-5404319552844595,18014398509481984)
assert_equal(r.rationalize, r)
assert_equal(r.rationalize(Rational(1,10)), Rational(-1,3))
assert_equal(r.rationalize(Rational(-1,10)), Rational(-1,3))
if @complex
if @keiju
else
assert_raise(RangeError){Complex(1,2).rationalize}
end
end
if (0.0/0).nan?
assert_raise(FloatDomainError){(0.0/0).rationalize}
end
if (1.0/0).infinite?
assert_raise(FloatDomainError){(1.0/0).rationalize}
end
end
def test_gcdlcm
assert_equal(7, 91.gcd(-49))
assert_equal(5, 5.gcd(0))