;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;;###autoload
(defun date-to-time (date)
- "Parse a string that represents a date-time and return a time value."
+ "Parse a string DATE that represents a date-time and return a time value."
(condition-case ()
(apply 'encode-time
(parse-time-string
(timezone-make-date-arpa-standard date)))
(error (error "Invalid date: %s" date))))
+;;;###autoload
(defun time-to-seconds (time)
"Convert time value TIME to a floating point number.
You can use `float-time' instead."
;;;###autoload
(defun time-subtract (t1 t2)
- "Subtract two time values.
+ "Subtract two time values, T1 minus T2.
Return the difference in the format of a time value."
(with-decoded-time-value ((high low micro type t1)
(high2 low2 micro2 type2 t2))
;;;###autoload
(defun time-add (t1 t2)
- "Add two time values. One should represent a time difference."
+ "Add two time values T1 and T2. One should represent a time difference."
(with-decoded-time-value ((high low micro type t1)
(high2 low2 micro2 type2 t2))
(setq high (+ high high2)
;;;###autoload
(defun time-to-day-in-year (time)
- "Return the day number within the year of the date month/day/year."
+ "Return the day number within the year corresponding to TIME."
(let* ((tim (decode-time time))
(month (nth 4 tim))
(day (nth 3 tim))
;;;###autoload
(defun safe-date-to-time (date)
- "Parse a string that represents a date-time and return a time value.
+ "Parse a string DATE that represents a date-time and return a time value.
If DATE is malformed, return a time value of zeros."
(condition-case ()
(date-to-time date)
(provide 'time-date)
-;;; arch-tag: addcf07b-b20a-465b-af72-550b8ac5190f
+;; arch-tag: addcf07b-b20a-465b-af72-550b8ac5190f
;;; time-date.el ends here