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Date:      Fri, 27 Dec 2019 15:03:35 -0800
From:      Steve Kargl <sgk@troutmask.apl.washington.edu>
To:        freebsd-current@freebsd.org
Subject:   Re: OpenSSL breaks factor(6)
Message-ID:  <20191227230335.GA61736@troutmask.apl.washington.edu>
In-Reply-To: <20191227224212.GA61594@troutmask.apl.washington.edu>
References:  <20191227212530.GA61314@troutmask.apl.washington.edu> <20191227214717.GA61475@troutmask.apl.washington.edu> <20191227224212.GA61594@troutmask.apl.washington.edu>

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On Fri, Dec 27, 2019 at 02:42:12PM -0800, Steve Kargl wrote:
> On Fri, Dec 27, 2019 at 01:47:17PM -0800, Steve Kargl wrote:
> > On Fri, Dec 27, 2019 at 01:25:30PM -0800, Steve Kargl wrote:
> > > The use of OpenSSL in factor(6) breaks factor(6) with respect to
> > > its documentation.
> > > 
> > > % man factor
> > >   ...
> > >   Numbers may be preceded by a single '+'.
> > >   ...
> > > 
> > > % factor +125
> > > factor: +125: illegal numeric format.
> > > 
> > 
> > This fixes factor(6) for the above issue.  The issue with
> > hexadecimal is not easily fixed.
> >
>  
> This patch now includes a fix for hexadecimal conversion.  It
> simple scans the string for a hex digit in [a,...,f] and assumes
> that a hexadecimal string has been entered.  A string that includes
> character from the decimal digits is assumed to by a decimal
> representation.  

Might as well fix the documentation.  Acknowledges that factor(6)
can deal with hexidecimal strings, and as a bonus fixes the bogus
information about the maximum value considered by primes(6).

Index: factor.6
===================================================================
--- factor.6	(revision 355983)
+++ factor.6	(working copy)
@@ -36,7 +36,7 @@
 .\"
 .\"   chongo <for a good prime call: 391581 * 2^216193 - 1> /\oo/\
 .\"
-.Dd October 10, 2002
+.Dd December 27, 2019
 .Dt FACTOR 6
 .Os
 .Sh NAME
@@ -67,11 +67,20 @@
 .Nm
 is invoked with no arguments,
 .Nm
-reads numbers, one per line, from standard input, until end of file or error.
+reads numbers, one per line, from standard input, until end of file or 0
+is entered or an error occurs.
 Leading white-space and empty lines are ignored.
 Numbers may be preceded by a single
 .Ql + .
 Numbers are terminated by a non-digit character (such as a newline).
+Numbers can be either decimal or hexadecimal strings.
+If the string contains only decimal digits, it is treated as a
+decimal representation for a number.
+A hexadecimal string should not a
+.Em 0x
+or
+.Em 0X
+prefix.
 After a number is read, it is factored.
 .Pp
 The
@@ -89,7 +98,7 @@
 value must not be greater than the maximum.
 The default and maximum value of
 .Ar stop
-is 3825123056546413050.
+is 18446744073709551615.
 .Pp
 When the
 .Nm primes

-- 
Steve



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