//
// $Id$
//

#ifndef COS_TIME_BASE_IDL
#define COS_TIME_BASE_IDL

module TimeBase {
  // = TITLE
  //   COS Time Service basic types.
  //
  // = DESCRIPTION
  //   The standard CORBA Time Service defines a number of data
  //   structures to manipulate and express time.
  //   TAO does not implement this standard service (yet), but we use
  //   the standard types.
  //

#if 1
  // interim definition of type ulonglong pending the
  // adoption of the type extension RFP.
  // @@ We also need support for 64-bit integers in TAO IDL compiler.
  struct ulonglong {
    unsigned long low;
    unsigned long high;
  };
  typedef ulonglong TimeT;
#else
  typedef unsigned long long TimeT;
#endif
  // As yet the IDL compiler does not support 64-bit quantities, we
  // resort to the original definition of TimeT before long long
  // numbers were added to IDL.
  //
  // Time in TimeT is expressed in units of 100 nano seconds (in
  // other words 10^-7 seconds), and are relative to October 15, 1582;
  // please read the spec for further details.

  typedef TimeT InaccuracyT;
  // To express an error estimate for time.

  typedef short TdfT;
  // Minutes of displacement from the Greenwich time.

  struct UtcT {
    // = TITLE
    //   The UTC time structure.
    TimeT time;
    unsigned long inacclo;
    unsigned short inacchi;
    TdfT tdf;
  };

  struct IntervalT {
    // = TITLE
    //   A time interval
    TimeT lower_bound;
    TimeT upper_bound;
  };
};

#endif /* COS_TIME_BASE_IDL */