NAME¶

SDL_tolower - Convert low-ASCII English letters to lowercase.

HEADER FILE¶

Defined in SDL3/SDL_stdinc.h

SYNOPSIS¶

#include "SDL3/SDL.h"

int SDL_tolower(int x);

DESCRIPTION¶

WARNING : Regardless of system locale, this will only convert ASCII values 'A' through 'Z' to lowercase.

This function returns the lowercase equivalent of x . If a character cannot be converted, or is already lowercase, this function returns x .

FUNCTION PARAMETERS¶

x

character value to check.

RETURN VALUE¶

Returns lowercase version of x, or x if no conversion available.

THREAD SAFETY¶

It is safe to call this function from any thread.

AVAILABILITY¶

This function is available since SDL 3.1.3.