rubinius/rubinius — pull request #1613 by zaeleus (2012-03-13 07:12:55+00:00)
Title: Add strict mode for String#to_f and Kernel#Float

* created String#to_dbl, which is modeled from String#to_inum
* moved primitive parsing from String::to_double to Float::from_cstr
* fixes "fails:String#to_f returns 0 for strings with leading underscores" in 1.9 mode