DOKK / manpages / debian 13 / libsdl3-doc / SDL_vsnprintf.3.en
SDL_vsnprintf(3) SDL3 FUNCTIONS SDL_vsnprintf(3)

SDL_vsnprintf - This works exactly like vsnprintf() but doesn't require access to a C runtime.

Defined in SDL3/SDL_stdinc.h

#include "SDL3/SDL.h"
int SDL_vsnprintf(char *text, size_t maxlen, const char *fmt, va_list ap);

Functions identically to SDL_snprintf (), except it takes a va_list instead of using ... variable arguments.

the buffer to write the string into. Must not be NULL.
the maximum bytes to write, including the null-terminator.
a printf-style format string. Must not be NULL.
a va_list values to be used with the format string.

Returns the number of bytes that should be written, not counting the null-terminator char, or a negative value on error.

It is safe to call this function from any thread.

This function is available since SDL 3.2.0.

SDL 3.2.10 Simple Directmedia Layer