ARM GNU Toolchain 13.2Rel1 newlib issue with sprintf and floating point

[Ernesto Vigano']

It's a copy-paste error.
The syntax is the right one

Il ven 3 mag 2024, 09:22 Christophe Lyon <christophe.lyon@arm.com> ha
scritto:

> Hi,
>
>
>
> On 5/3/24 08:11, Ernesto Vigano' wrote:
> > I need to use sprintf with floating point numbers (%f format specifier)
> > in a project based on rpmsg_lite_str_echo_rtos on the cortex-M (NXP
> > Processor).
> > I use the recommended
> > arm-gnu-toolchain-12.3.rel1-mingw-w64-i686-arm-none-eabi
> > I see that when I call
> >
> > sprintf(str, "%d" 3);
> >
> > the number 3 is printed to the string str.
> >
> > But if I have a floating point number and I use "%f" format specifier
> >
> > sprintf(str, "%f" 3.5);
>
> Is this a copy/paste error, or did you forget the ',' before the number
> you want to print?
>
> Thanks,
>
> Christophe
>
> >
> > I get
> > ASSERT ERROR " Balloc succeeded ": file
> >
> "/data/jenkins/workspace/GNU-toolchain/arm-12/src/newlib-cygwin/newlib/libc/stdlib/mprec.c"
> Line "783" function name ""
> >
> > It seems similar to this error
> > forum.pjrc.com/index.php
> > <
> https://forum.pjrc.com/index.php?threads/strange-compiling-problem-assertion-balloc-succeeded-failed-file-data-jenkins-w.72798/
> >
> > that points to this fix
> > github.com/.../f88aece242178ff0c187d56e34a79645fbc44a23
> > <
> https://github.com/zephyrproject-rtos/newlib-cygwin/commit/f88aece242178ff0c187d56e34a79645fbc44a23
> >
> >
> > Is there a way to have sprintf working with floating point numbers?
> >
> > Thanks
>
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