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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-08-30 07:17:56 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-08-30 07:17:56 +0000 |
commit | d7ca01a73ad5287f9d063bbdf5b35f472affda9d (patch) | |
tree | c79b2018ac56d826f7c0a716df096e5ceb9ef19d /test | |
parent | aa7dc0f305c11c2ef9e67f6d48acbd1264022024 (diff) | |
download | ruby-d7ca01a73ad5287f9d063bbdf5b35f472affda9d.tar.gz |
bigdecimal.c: check underflow
* ext/bigdecimal/bigdecimal.c (BigDecimal_to_f): check underflow since
strtod() sets errno to ERANGE at underflow too. [ruby-core:47342]
[Bug #6944]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36854 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test')
-rw-r--r-- | test/bigdecimal/test_bigdecimal.rb | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/test/bigdecimal/test_bigdecimal.rb b/test/bigdecimal/test_bigdecimal.rb index d440e4cedb..6694697e0e 100644 --- a/test/bigdecimal/test_bigdecimal.rb +++ b/test/bigdecimal/test_bigdecimal.rb @@ -540,15 +540,35 @@ class TestBigDecimal < Test::Unit::TestCase assert_kind_of(Float, x .to_f) assert_kind_of(Float, (-x).to_f) + bug6944 = '[ruby-core:47342]' + BigDecimal.mode(BigDecimal::EXCEPTION_UNDERFLOW, true) - assert_raise(FloatDomainError) { - BigDecimal("1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f } - assert_raise(FloatDomainError) { - BigDecimal("-1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f } + x = "1e#{Float::MIN_10_EXP - 2*Float::DIG}" + assert_raise(FloatDomainError, x) {BigDecimal(x).to_f} + x = "-#{x}" + assert_raise(FloatDomainError, x) {BigDecimal(x).to_f} + x = "1e#{Float::MIN_10_EXP - Float::DIG}" + assert_nothing_raised(FloatDomainError, x) { + assert_in_delta(0.0, BigDecimal(x).to_f, 10**Float::MIN_10_EXP, bug6944) + } + x = "-#{x}" + assert_nothing_raised(FloatDomainError, x) { + assert_in_delta(0.0, BigDecimal(x).to_f, 10**Float::MIN_10_EXP, bug6944) + } BigDecimal.mode(BigDecimal::EXCEPTION_UNDERFLOW, false) - assert_equal( 0.0, BigDecimal("1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f) - assert_equal(-0.0, BigDecimal("-1e#{Float::MIN_10_EXP - 2*Float::DIG}").to_f) + x = "1e#{Float::MIN_10_EXP - 2*Float::DIG}" + assert_equal( 0.0, BigDecimal(x).to_f, x) + x = "-#{x}" + assert_equal(-0.0, BigDecimal(x).to_f, x) + x = "1e#{Float::MIN_10_EXP - Float::DIG}" + assert_nothing_raised(FloatDomainError, x) { + assert_in_delta(0.0, BigDecimal(x).to_f, 10**Float::MIN_10_EXP, bug6944) + } + x = "-#{x}" + assert_nothing_raised(FloatDomainError, x) { + assert_in_delta(0.0, BigDecimal(x).to_f, 10**Float::MIN_10_EXP, bug6944) + } end def test_coerce |