• State Suggested Answer
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 21 subscribers
  • Views 3549 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

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

vix

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);

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
that points to this fix
github.com/.../f88aece242178ff0c187d56e34a79645fbc44a23

Is there a way to have sprintf working with floating point numbers?

0