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Subject: Re: [PATCH] Add Roman numerals in *printf
To: Matteo Croce <matteo@openwrt.org>, libc-alpha@sourceware.org
References: <1459503215-21039-1-git-send-email-matteo@openwrt.org>
From: Martin Sebor <msebor@gmail.com>
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Date: Mon, 04 Apr 2016 22:59:00 -0000
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> This patch adds the `%r' modifier in all the *printf functions,
> which can be used to represent a number in Roman numerals.

A bit late to the April 1 party, but a C++ Standard Library
implementation I worked on years ago actually has this feature.
It makes it possible to use the usual C++ iostream inserter and
extractor operators to format and parse not only Roman numerals
(that was done mostly just to give base 1 a meaning), but more
usefully numbers in any base between 1 and 36.  The implementation
still ships with a number of compilers, though I think only one
(Compaq/HP CC for Tru64) has the version with the Roman numerals.

Martin