An unsigned 64-bit integer type.
Defined in <SDL3/SDL_stdinc.h>
typedef uint64_t Uint64;
#define SDL_MAX_UINT64 SDL_UINT64_C(0xFFFFFFFFFFFFFFFF) /* 18446744073709551615 */
#define SDL_MIN_UINT64 SDL_UINT64_C(0x0000000000000000) /* 0 */
This macro is available since SDL 3.1.3.