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sprintf.c: exact number

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* sprintf.c (rb_str_format): format exact number more exactly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53533 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2016-01-14 07:12:42 +00:00
parent ed11f4b4b5
commit 1301d1f5bc
3 changed files with 18 additions and 3 deletions
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5
test/ruby/test_sprintf.rb
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@ -149,6 +149,11 @@ class TestSprintf < Test::Unit::TestCase
assert_equal(" Inf", sprintf("% e", inf), '[ruby-dev:34002]')
end
def test_bignum
assert_match(/\A10{120}\.0+\z/, sprintf("%f", 100**60))
assert_match(/\A10{180}\.0+\z/, sprintf("%f", 1000**60))
end
def test_rational
assert_match(/\A0\.10+\z/, sprintf("%.60f", 0.1r))
assert_match(/\A0\.010+\z/, sprintf("%.60f", 0.01r))