util.h

   1 #ifndef UTIL_H
   2 #define UTIL_H
   3
   4 #define LENGTH(x)  ((int)(sizeof (x) / sizeof *(x)))
   5 #define MIN(a, b)  ((a) > (b) ? (b) : (a))
   6 #define MAX(a, b)  ((a) < (b) ? (b) : (a))
   7
   8 /* is c the start of a utf8 sequence? */
   9 #define ISUTF8(c)   (((c)&0xC0)!=0x80)
  10 #define ISASCII(ch) ((unsigned char)ch < 0x80)
  11
  12 #endif