utils.h

/* utility definitions */
#ifndef_POSIX2_RE_DUP_MAX
#define_POSIX2_RE_DUP_MAX 255
#endif

#defineDUPMAX _POSIX2_RE_DUP_MAX /* xxx is this right? */
#defineINFINITY (DUPMAX + 1)
#defineNC (CHAR_MAX - CHAR_MIN + 1)
typedefunsigned charuch;

/* switch off assertions (if not already off) if no REDEBUG */
#ifndefREDEBUG
#ifndefNDEBUG
#defineNDEBUG/* no assertions please */
#endif
#endif
#include<assert.h>

/* for old systems with bcopy() but no memmove() */
#ifdefUSEBCOPY
#definememmove(d, s, c) bcopy(s, d, c)
#endif