const char * gdJpegGetVersionString()
{
        switch(JPEG_LIB_VERSION) {
                case 62:
                        return "6b";
                        break;

                case 70:
                        return "7";
                        break;

                case 80:
                        return "8";
                        break;

                case 90:
                        return "9 compatible";
                        break;

                default:
                        return "unknown";
        }
} 

                case 100:
                        return "10 compatible";
                        break;

/* Version IDs for the JPEG library.
 * Might be useful for tests like "#if JPEG_LIB_VERSION >= 100".
 */

#define JPEG_LIB_VERSION        100     /* Compatibility version 10.0 */
#define JPEG_LIB_VERSION_MAJOR  10
#define JPEG_LIB_VERSION_MINOR  0

8.5.4