sdlTolower function stdinc
Convert low-ASCII English letters to lowercase.
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.
\param x character value to check. \returns lowercase version of x, or x if no conversion available.
\threadsafety It is safe to call this function from any thread.
\since This function is available since SDL 3.2.0.
extern SDL_DECLSPEC int SDLCALL SDL_tolower(int x)
Implementation
int sdlTolower(int x) {
  final sdlTolowerLookupFunction = _libSdl
      .lookupFunction<Int32 Function(Int32 x), int Function(int x)>(
        'SDL_tolower',
      );
  return sdlTolowerLookupFunction(x);
}