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test_math.rb: to_f tests

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* test/ruby/test_math.rb (test_{fixnum,bignum,rational}_to_f):
  refine to_f tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49916 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-03-10 11:01:55 +00:00
parent 04e348e61a
commit acc17bfc0f
1 changed files with 12 additions and 5 deletions
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17
test/ruby/test_math.rb
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@ -49,11 +49,6 @@ class TestMath < Test::Unit::TestCase
check(-1.0, Math.cos(4 * Math::PI / 4))
check(0.0, Math.cos(6 * Math::PI / 4))
check(0.5403023058681398, Math.cos(1))
check(-0.7112665029764864, Math.cos(1 << 62))
check(0.9289154176164999, Math.cos((2 ** 62)/(3 ** 40).to_r))
check(0.9820680774815206, Math.cos((2 ** 61)/(3 ** 40).to_r))
check(0.4194382061248139, Math.cos((2 ** 62)/(3 ** 39).to_r))
check(0.8424482791616391, Math.cos((2 ** 61)/(3 ** 39).to_r))
end
def test_sin
@ -272,6 +267,10 @@ class TestMath < Test::Unit::TestCase
assert_raise(Math::DomainError) { Math.lgamma(-Float::INFINITY) }
end
def test_fixnum_to_f
check(12.0, Math.sqrt(144))
end
def test_override_fixnum_to_f
Fixnum.class_eval do
alias _to_f to_f
@ -287,6 +286,10 @@ class TestMath < Test::Unit::TestCase
Fixnum.class_eval { alias to_f _to_f }
end
def test_bignum_to_f
check((1 << 65).to_f, Math.sqrt(1 << 130))
end
def test_override_bignum_to_f
Bignum.class_eval do
alias _to_f to_f
@ -301,6 +304,10 @@ class TestMath < Test::Unit::TestCase
Bignum.class_eval { alias to_f _to_f }
end
def test_rational_to_f
check((2 ** 31).fdiv(3 ** 20), Math.sqrt((2 ** 62)/(3 ** 40).to_r))
end
def test_override_rational_to_f
Rational.class_eval do
alias _to_f to_f