Date: Fri, 21 Jan 2005 01:47:53 +0300 From: Andrey Chernov <ache@nagual.pp.ru> To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de> Cc: bde@FreeBSD.ORG Subject: Re: Implementation errors in strtol() Message-ID: <20050120224753.GB71573@nagual.pp.ru> In-Reply-To: <20050120223232.GF30862@uriah.heep.sax.de> References: <20050120192324.GA30862@uriah.heep.sax.de> <20050120205501.GA69123@nagual.pp.ru> <20050120211449.GC30862@uriah.heep.sax.de> <20050120214406.GA70088@nagual.pp.ru> <20050120220227.GB70629@nagual.pp.ru> <20050120223232.GF30862@uriah.heep.sax.de>
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On Thu, Jan 20, 2005 at 11:32:32PM +0100, Joerg Wunsch wrote:
> You can perform a conversion on any valid subject sequence (that ``has
> the expected form''). The optional sign is part of the valid
> sequence.
As you (and POSIX) say, it is only PART of the valid sequence, but not
whole valid sequence which could be converted.
> Thus, we do have a subject sequence of the ``expected form''. Any
> such sequence is convertible per definitionem.
This is just your speculation about what "expected form" is. But POSIX
clearly says, what expected form is:
"If the value of base is 0, the expected form of the subject sequence is
^^^^^^^^^^^^^^^^^^^
that of a decimal constant, octal constant, or hexadecimal constant, any
of which may be preceded by a .+. or .-. sign."
No CONSTANT found in just +- case.
Next, lets see what expected form is, if base is nonzero:
"If the value of base is between 2 and 36, the expected form of the
^^^^^^^^^^^^^^^^^
subject sequence is a sequence of letters and digits representing an
integer with the radix specified by base, optionally preceded by a .+. or
.-. sign."
The same no SEQUENCE OF LETTERS AND DIGITS found in just +- case.
As I say, read POSIX, please.
--
http://ache.pp.ru/
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