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Hi,
some time ago OpenBSD developers implemented strtonum(3) function which
is safer implementation of atoi(3) and strtol(3) - it does bounds
checking, error detection, etc. They use it several applications (e.g.
OpenSSH has native implementation).
This function doesn't conform to POSIX or any other standard, but it
might be useful. FreeBSD also made decision to import this function into
the libc.

If there is some questions about this, to don't discuss it twice,
checkout discussion in FreeBSD mailing list with OpenBSD folks:
http://lists.freebsd.org/pipermail/freebsd-current/2005-April/048655.html

If there will be decision to import it, I attached patch and source with
manual, which goes to src/lib/libc/stdlib :) Please review.

-- 
Best regards,
Mindaugas

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