Move declarations for timespan2tm() and tm2timespan() from dt.c to here.

src/include/utils/dt.h

@@ -8,7 +8,7 @@
  *
  * Copyright (c) 1994, Regents of the University of California
  *
- * $Id: dt.h,v 1.23 1997/12/16 15:55:17 thomas Exp $
+ * $Id: dt.h,v 1.24 1997/12/17 23:19:28 thomas Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -291,6 +291,7 @@ extern TimeSpan *timespan_larger(TimeSpan *span1, TimeSpan *span2);
 extern text *datetime_text(DateTime *datetime);
 extern DateTime *text_datetime(text *str);
 extern text *timespan_text(TimeSpan *timespan);
+extern TimeSpan *text_timespan(text *str);
 extern DateTime *datetime_trunc(text *units, DateTime *datetime);
 extern TimeSpan *timespan_trunc(text *units, TimeSpan *timespan);
 extern float64 datetime_part(text *units, DateTime *datetime);
@@ -311,6 +312,8 @@ extern void GetCurrentTime(struct tm * tm);
 extern DateTime SetDateTime(DateTime datetime);
 extern int tm2datetime(struct tm * tm, double fsec, int *tzp, DateTime *dt);
 extern int  datetime2tm(DateTime dt, int *tzp, struct tm * tm, double *fsec, char **tzn);
+extern int timespan2tm(TimeSpan span, struct tm * tm, float8 *fsec);
+extern int tm2timespan(struct tm * tm, double fsec, TimeSpan *span);
 
 extern void j2date(int jd, int *year, int *month, int *day);
 extern int date2j(int year, int month, int day);