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Bug #11736

Float(arg) not consistent with documentation

Added by bwheeler96 (Brian Wheeler) over 4 years ago. Updated over 3 years ago.

Status:
Closed
Priority:
Normal
Target version:
-
ruby -v:
ruby 2.1.5p273
[ruby-core:71661]

Description

Float(arg) → float
Returns arg converted to a float. Numeric types are converted directly, the rest are converted using arg.to_f. Converting nil generates a TypeError.

Strings are NOT converted using arg.to_f

'123_INVALID'.to_f 
# => 123.0
Float('123_INVALID') 
# => ArgumentError

This could be fixed by changing object.c like so:

-       return DBL2NUM(rb_str_to_dbl(val, TRUE));
+       return DBL2NUM(rb_str_to_dbl(val, FALSE));

But it appears that this is desired behavior as there are many specs to ensure this strict validity checking. Please update the documentation to reflect this.

Thanks,

Brian


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Related issues

Related to Ruby master - Bug #9574: Inconsistent behavior between Kernel#Float and to_fClosedzzak (Zachary Scott)Actions

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