Man page - sdl_snprintf(3)

Packages contains this manual

Package:  libsdl3-doc
apt-get install libsdl3-doc

Documentations in package:
• libsdl3-doc
• libsdl3-dev

Manual

SDL_snprintf

NAME
HEADER FILE
SYNOPSIS
DESCRIPTION
FUNCTION PARAMETERS
RETURN VALUE
THREAD SAFETY
AVAILABILITY

---

NAME

SDL_snprintf - This works exactly like snprintf() but doesn’t require access to a C runtime.

HEADER FILE

Defined in SDL3/SDL_stdinc.h

SYNOPSIS

#include "SDL3/SDL.h"

int SDL_snprintf(char *text, size_t maxlen, const char *fmt, ...);

DESCRIPTION

Format a string of up to maxlen -1 bytes, converting each ’%’ item with values provided through variable arguments.

While some C runtimes differ on how to deal with too-large strings, this function null-terminates the output, by treating the null-terminator as part of the maxlen count. Note that if maxlen is zero, however, no bytes will be written at all.

This function returns the number of _bytes_ (not _characters_) that should be written, excluding the null-terminator character. If this returns a number >= maxlen , it means the output string was truncated. A negative return value means an error occurred.

Referencing the output string’s pointer with a format item is undefined behavior.

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.
	...		a list of 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.

---