An alphabetical listing of the DTS portable interface routines and a
   brief description of each one follows:

   utc_abstime()
            Computes the absolute value of a relative binary timestamp.

   utc_addtime()
            Computes the sum of two binary timestamps; the timestamps can
            be two relative times or a relative time and an absolute
 	   time.

   utc_anytime()
            Converts a binary timestamp to a tm structure by using the
 	   TDF information contained in the timestamp to determine the
 	   TDF returned with the tm structure.

   utc_anyzone()
            Gets the time zone label and offset from GMT by using the TDF
            contained in the utc input parameter.

   utc_ascanytime()
            Converts a binary timestamp to an ASCII string that
            represents an arbitrary time zone.

   utc_ascgmtime()
            Converts a binary timestamp to an ASCII string that expresses
            a GMT time.

   utc_asclocaltime()
            Converts a binary timestamp to an ASCII string that
            represents a local time.

   utc_ascreltime()
            Converts a relative binary timestamp to an ASCII string that
            represents the time.

   utc_binreltime()
            Converts a relative binary timestamp to two timespec
 	   structures that express relative time and inaccuracy.

   utc_bintime()
            Converts a binary timestamp to a timespec structure.

   utc_boundtime()
            Given two UTC times, one before and one after an event,
 	   returns a single UTC time whose inaccuracy includes the
 	   event.

   utc_cmpintervaltime()
            Compares two binary timestamps or two relative binary
            timestamps.

   utc_cmpmidtime()
            Compares two binary timestamps or two relative binary
            timestamps, ignoring inaccuracies.

   utc_gettime()
            Returns the current system time and inaccuracy as a binary
            timestamp.

   utc_getusertime()
            Returns the time and process-specific TDF, rather than the
            system-specific TDF.

   utc_gmtime()
            Converts a binary timestamp to a tm structure that expresses
            GMT or the equivalent UTC.

   utc_gmtzone()
            Gets the time zone label for GMT.

   utc_localtime()
            Converts a binary timestamp to a tm structure that expresses
            local time.

   utc_localzone()
            Gets the local time zone label and offset from GMT, given
        	   utc.

   utc_mkanytime()
            Converts a tm structure and TDF (expressing the time in
 	   an arbitrary time zone) to a binary timestamp.

   utc_mkascreltime()
            Converts a NULL-terminated character string that represents
 	   a relative timestamp to a binary timestamp.

   utc_mkasctime()
            Converts a NULL-terminated character string that represents
 	   an absolute timestamp to a binary timestamp.

   utc_mkbinreltime()
            Converts a timespec structure expressing a relative time to a
            binary timestamp.

   utc_mkbintime()
            Converts a timespec structure to a binary timestamp.

   utc_mkgmtime()
            Converts a tm structure that expresses GMT or UTC to a binary
            timestamp.

   utc_mklocaltime()
            Converts a tm structure that expresses local time to a binary
            timestamp.

   utc_mkreltime()
            Converts a tm structure that expresses relative time to a
            relative binary timestamp.

   utc_mulftime()
            Multiplies a relative binary timestamp by a floating-point
            value.

   utc_multime()
            Multiplies a relative binary timestamp by an integer factor.

   utc_pointtime()
            Converts a binary timestamp to three binary timestamps that
            represent the earliest, most likely, and latest time.

   utc_reltime()
            Converts a relative binary timestamp to a tm structure.

   utc_spantime()
            Given two (possibly unordered) binary timestamps, returns a
            single UTC time interval whose inaccuracy spans the two
            input binary timestamps.

   utc_subtime()
            Computes the difference between two binary timestamps that
            express either an absolute time and a relative time, two
            relative times, or two absolute times.