dist/ntp/kernel/sys/chudefs.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Definitions for the CHU line discipline v2.0
   5  */
   6
   7 /*
   8  * The CHU time code consists of 10 BCD digits and is repeated
   9  * twice for a total of 10 characters.  A time is taken after
  10  * the arrival of each character.  The following structure is
  11  * used to return this stuff.
  12  */
  13 #define NCHUCHARS       (10)
  14
  15 struct chucode {
  16         u_char codechars[NCHUCHARS];    /* code characters */
  17         u_char ncodechars;              /* number of code characters */
  18         u_char chutype;                 /* packet type */
  19         struct timeval codetimes[NCHUCHARS];    /* arrival times */
  20 };
  21
  22 #define CHU_TIME 0              /* second half is equal to first half */
  23 #define CHU_YEAR 1              /* second half is one's complement */
  24