4.3BSD - /usr/src/usr.lib/libpc/IN.c

   1: /* Copyright (c) 1979 Regents of the University of California */
   2: 
   3: static char sccsid[] = "@(#)IN.c 1.2 3/7/81";
   4: 
   5: #include "h00vars.h"
   6: 
   7: bool
   8: IN(element, lower, upper, setptr)
   9: 
  10:     long    element;    /* element to check */
  11:     long    lower;      /* lowest element of set */
  12:     long    upper;      /* upper - lower of set */
  13:     char    setptr[];   /* pointer to set */
  14: {
  15:     register int    indx;
  16: 
  17:     if ((indx = element - lower) < 0 || indx > upper)
  18:         return FALSE;
  19:     if (setptr[indx >> LG2BITSBYTE] & (1 << (indx & MSKBITSBYTE)))
  20:         return TRUE;
  21:     return FALSE;
  22: }

Defined functions

Defined variables