};

/*
 * The following constants are used to determine the category of a
 * Unicode character.
 */

#define UNICODE_CATEGORY_MASK 0x1F
#define UNICODE_CATEGORY_MASK 0x1f
#define UNICODE_OUT_OF_RANGE 0x10000u

enum {
    UNASSIGNED,
    UPPERCASE_LETTER,
    LOWERCASE_LETTER,
    TITLECASE_LETTER,

/*
 * The following macros extract the fields of the character info.  The
 * GetDelta() macro is complicated because we can't rely on the C compiler
 * to do sign extension on right shifts.
 */

#define GetCaseType(info) (((info) & 0xE0) >> 5)
#define GetCategory(ch) (GetUniCharInfo(ch) & 0x1F)
#define GetCaseType(info) (((info) & 0xe0) >> 5)
#define GetCategory(ch) (GetUniCharInfo(ch) & 0x1f)
#define GetDelta(info) (((info) > 0) ? ((info) >> 15) : (~(~((info)) >> 15)))

/*
 * This macro extracts the information about a character from the
 * Unicode character tables.
 */

#define GetUniCharInfo(ch) (groups[groupMap[(pageMap[(((int)(ch)) & 0xffff) >> OFFSET_BITS] << OFFSET_BITS) | ((ch) & ((1 << OFFSET_BITS)-1))]])