Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_vsnprintf - This works exactly like vsnprintf() but doesn't require access to a C runtime.
SYNOPSIS
#include <SDL3/SDL_stdinc.h>
int SDL_vsnprintf(char *text, size_t maxlen, const char *fmt, va_list ap);
DESCRIPTION
Functions identically to SDL_snprintf(), except it takes a va_list instead of using ... variable
arguments.
FUNCTION PARAMETERS
text the buffer to write the string into. Must not be NULL.
maxlen the maximum bytes to write, including the null-terminator.
fmt a printf-style format string. Must not be NULL.
ap a va_list values to be used with the format string.
RETURN VALUE
Returns the number of bytes that should be written, not counting the null-terminator char, or a negative
value on error.
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_vsnprintf(3)