Re: [musl] Integer only print functions support in MUSL

[James Y Knight <jyknight@google.com>]

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According to LLVM sources (LLVM knows how to transform printf variants into
iprintf variants), "iprintf and friends are only available on XCore, TCE,
and Emscripten."

I note that emscripten actually uses musl's printf implementation, and has
added iprintf support as a downstream patch.



On Wed, Jun 12, 2024 at 2:56 PM Markus Wichmann <nullplan@gmx.net> wrote:

> Am Wed, Jun 12, 2024 at 05:29:59PM +0000 schrieb Ram Nalamothu (QUIC):
> > Hi,
> >
> > On the subject line topic, is there a plan for integer only print
> functions support in MUSL upstream?
> >
> > The newlib seems to support the same since 2004 [1] and one immediate
> scenario using this capability is assert function [2] in the C library
> itself which needs to print only the non-float types.
> >
> > Applications that use integer only print functions can benefit from this
> capability in terms of reduced code size by avoiding floating point support
> implementation in the linked print functions.
> >
> > I tried a quick search on the mailing list but couldn't find any
> previous discussions on this topic.
> > Would it make sense to have the similar support in MUSL as well? Would
> the community be open to accept patches supporting integer only print
> functions?
> >
> > Regards,
> > Ram
> >
> > [1] https://sourceware.org/legacy-ml/newlib/2004/msg00577.html
> > [2]
> https://sourceware.org/git/?p=newlib-cygwin.git;a=blob;f=newlib/libc/stdlib/assert.c#l58
>
> Standard criteria for inclusion in musl have always been any kind of
> standardization effort at all. Otherwise there is a risk of future
> incompatible standardization. And iprintf() seems to be a newlib
> exclusive; I cannot find any reference to this function outside of it.
>
> Ciao,
> Markus
>

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