X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/177f020f122827214159c46dcfe7ded1e3c8d1c3..efb2c94fbc4861fc81307cd5d0ce22eb16e6de26:/h/tws.h

diff --git a/h/tws.h b/h/tws.h
index 4c944547..17a01a2d 100644
--- a/h/tws.h
+++ b/h/tws.h
@@ -1,12 +1,11 @@
-/* tws.h
+/* tws.h -- time routines.
  */
 
-/* If the following is #defined, a timezone given as a numeric-only offset will
+/* A timezone given as a numeric-only offset will
    be treated specially if it's in a zone that observes Daylight Saving Time.
    For instance, during DST, a Date: like "Mon, 24 Jul 2000 12:31:44 -0700" will
    be printed as "Mon, 24 Jul 2000 12:31:44 PDT".  Without the code activated by
-   the following #define, that'd be incorrectly printed as "...MST". */
-#define	ADJUST_NUMERIC_ONLY_TZ_OFFSETS_WRT_DST 1
+   the following #define, that would be incorrectly printed as "...MST". */
 
 struct tws {
     int tw_sec;		/* seconds after the minute - [0, 61] */
@@ -14,7 +13,7 @@ struct tws {
     int tw_hour;	/* hour since midnight - [0, 23]      */
     int tw_mday;	/* day of the month - [1, 31]         */
     int tw_mon;		/* months since January - [0, 11]     */
-    int tw_year;	/* 4 digit year (ie, 1997)            */
+    int tw_year;	/* 4 digit year (e.g. 1997)           */
     int tw_wday;	/* days since Sunday - [0, 6]         */
     int tw_yday;	/* days since January 1 - [0, 365]    */
     int tw_zone;
@@ -25,13 +24,10 @@ struct tws {
 #define	TW_NULL	 0x0000
 
 #define	TW_SDAY	 0x0003	/* how day-of-week was determined */
-#define	TW_SNIL	 0x0000	/*   not given                    */
 #define	TW_SEXP	 0x0001	/*   explicitly given             */
 #define	TW_SIMP	 0x0002	/*   implicitly given             */
 
-#define	TW_SZONE 0x0004	/* how timezone was determined    */
-#define	TW_SZNIL 0x0000	/*   not given                    */
-#define	TW_SZEXP 0x0004	/*   explicitly given             */
+#define	TW_SZEXP 0x0004	/* Explicit timezone. */
 
 #define	TW_DST	 0x0010	/* daylight savings time          */
 #define	TW_ZONE	 0x0020	/* use numeric timezones only     */
@@ -55,7 +51,6 @@ struct tws *dlocaltime (time_t *);
 struct tws *dgmtime (time_t *);
 char *dasctime (struct tws *, int);
 char *dtimezone (int, int);
-void twscopy (struct tws *, struct tws *);
 int twsort (struct tws *, struct tws *);
 time_t dmktime (struct tws *);
 void set_dotw (struct tws *);