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* math.c (math_cbrt): [DOC] Fix domain and codomain.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49973 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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gogotanaka 2015-03-15 11:49:30 +00:00
parent 573772ab5b
commit ef8537bc9e
1 changed files with 2 additions and 2 deletions
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math.c
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@ -658,9 +658,9 @@ math_sqrt(VALUE obj, VALUE x)
*
* Returns the cube root of +x+.
*
* Domain: [0, INFINITY)
* Domain: (-INFINITY, INFINITY)
*
* Codomain:[0, INFINITY)
* Codomain: (-INFINITY, INFINITY)
*
* -9.upto(9) {|x|
* p [x, Math.cbrt(x), Math.cbrt(x)**3]