printf

Tiny, fast, non-dependent and fully loaded printf implementation for embedded systems. Extensive test suite passing. (by mpaland)
Add to my DEV experience Printf no-dependencies Sprintf Embedded replacement Format snprintf Embedded Systems Tiny Libc Threadsafe tinyprintf IoT
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Similar projects and alternatives to printf

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a better printf alternative or higher similarity.
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printf reviews and mentions

Posts with mentions or reviews of printf. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-03-27.
  • Nanoprintf – The smallest public printf implementation for its feature set
    3 projects | news.ycombinator.com | 27 Mar 2023
  • Thank you senpai!
    6 projects | /r/ProgrammerHumor | 16 Mar 2023
  • Sprintf without C library
    5 projects | /r/C_Programming | 7 Feb 2023
    https://github.com/mpaland/printf i think this would work
  • Nolibc: A minimal C-library replacement shipped with the kernel
    4 projects | news.ycombinator.com | 22 Jan 2023
    Seems unlikely. My spot check of the the two vfprintf implementations shows no flow from one to the other, and shows that part of the Cosmopolitan code has an older lineage than nolibc.

    The nolibc source has many reference to copyright held by "Willy Tarreau", under LGPL-2.1 OR MIT license, with a copyright date starting in 2017.

    The string "Tarreau" does not exist in the Cosmopolitan library, so that's a strong negative there. Let's look closer.

    The file organization is quite different. And so is the implementation. So that's another negative.

    Compare the vfprintf in nolibc at https://elixir.bootlin.com/linux/v6.2-rc4/source/tools/inclu... (a 'minimal vfprintf()') with the one in cosmopolitan starting at https://github.com/jart/cosmopolitan/blob/master/libc/stdio/....

    Right away we can see nolibc places many functions in the same file while Cosmopolitan uses a one-function-per-filename organization.

    Cosmopolitan's fvprintf locks the file (which nolibc doesn't need to do) then calls vfprintf_unlocked which calls __fmt at https://github.com/jart/cosmopolitan/blob/master/libc/fmt/fm... , which is the actual implementation. It look very different from NOLIBC's.

    Okay, so perhaps that's they way now but not at the beginning?

    We can also go back to Cosmopolitan's original implementation and see how vfprintf goes through https://github.com/jart/cosmopolitan/blob/c91b3c50068224929c... to call "palandprintf", which https://github.com/jart/cosmopolitan/blob/c91b3c50068224929c... says is copyright "Marco Paland" from 2014-2019.

    That's a few years older than the start of nolibc, available from https://github.com/mpaland/printf , and part of https://github.com/embeddedartistry/libc , a "libc targeted for embedded systems usage".

    Thus, multiple factors seem to agree that nolibc code is not used in the Cosmopolitan library.

  • How should I go about implementing printf-like function in my library?
    1 project | /r/embedded | 27 Dec 2022
    I wrap this C implementation in a C++ Logger class and use it to "print" into a simple buffer. Then the static buffer is periodically unrolled into a transport layer using a static Logger::transmit() function in my BSP. I'm working with very little flash, so the linked implementation is essential.
  • A 1 hour interview for an embedded engineering position
    1 project | /r/C_Programming | 24 Aug 2021
    There are many good and tiny printf's fir embedded on GitHub. https://github.com/mpaland/printf eg Better than the bsd printf mostly
  • is it safe to use printf()?
    1 project | /r/embedded | 10 Aug 2021
  • Sprintf on STM32?
    1 project | /r/embedded | 23 Feb 2021
    I'm sure sprintf itself is working in their library, so try to find other issues first, BUT, as a last resort you can try another lib: https://github.com/mpaland/printf/
  • Would you merge with them?
    2 projects | /r/ProgrammerAnimemes | 17 Feb 2021
    10 projects | /r/ProgrammerHumor | 16 Feb 2021
    looked at that account, found this one too
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    www.influxdata.com | 10 May 2024
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mpaland/printf is an open source project licensed under MIT License which is an OSI approved license.

The primary programming language of printf is C.

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