callback_printf allows the implementation of portable sprintf, snprintf, vsprintf and vsnprintf like output functions. The code includes wrappers for those functions. It supports all formats of the C 11 standard. wchar_t arguments and strings are printed as UTF-8. It's pretty fast, threadsafe and has no dependencies to other libraries.
fast embedded binary sprintf octal utf8 ternary portable-library quaternary snprintf senary vsprintf vsnprintf nonal floating-point-output numeric-systems embedded-systems-sprintf c-sprintf vsprintf-bench
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Updated
Sep 4, 2025 - C