diff options
| -rw-r--r-- | ChangeLog | 2 | ||||
| -rw-r--r-- | test/ruby/test_math.rb | 21 |
2 files changed, 23 insertions, 0 deletions
@@ -3,6 +3,8 @@ Tue Mar 3 14:47:30 2015 Kazuki Tanaka <gogotanaka@ruby-lang.org> * math.c (num2dbl_with_to_f): direct casting from Rational to double. [Feature #10909] + * test/ruby/test_math.rb: add tests for the above change. + Tue Mar 3 07:52:20 2015 Rei Odaira <Rei.Odaira@gmail.com> * test/ruby/test_symbol.rb: avoid a false positive in AIX. diff --git a/test/ruby/test_math.rb b/test/ruby/test_math.rb index 5073166363..b6f41ed357 100644 --- a/test/ruby/test_math.rb +++ b/test/ruby/test_math.rb @@ -42,6 +42,12 @@ class TestMath < Test::Unit::TestCase check(0.0, Math.cos(2 * Math::PI / 4)) 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 @@ -319,4 +325,19 @@ class TestMath < Test::Unit::TestCase Bignum.class_eval { alias to_f _to_f } end + + def test_override_rational_to_f + Rational.class_eval do + alias _to_f to_f + def to_f + (self + 1)._to_f + end + end + + check(Math.cos((0r + 1)._to_f), Math.cos(0r)) + check(Math.exp((0r + 1)._to_f), Math.exp(0r)) + check(Math.log((0r + 1)._to_f), Math.log(0r)) + + Rational.class_eval { alias to_f _to_f } + end end |