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Update "Calendrical Calculations" cites

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* lisp/calendar/calendar.el: Update citations to the book
"Calendrical Calculations" and its predecessors.
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Paul Eggert 2018-04-02 22:42:26 -07:00
parent 1527235baf
commit a231c33eab
1 changed files with 17 additions and 16 deletions
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lisp/calendar/calendar.el
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@ -76,20 +76,19 @@
;; solar.el Sunrise/sunset, equinoxes/solstices ;; solar.el Sunrise/sunset, equinoxes/solstices
;; Technical details of all the calendrical calculations can be found in ;; Technical details of all the calendrical calculations can be found in
;; ``Calendrical Calculations: The Millennium Edition'' by Edward M. Reingold ;; "Calendrical Calculations: The Ultimate Edition" by Edward M. Reingold
;; and Nachum Dershowitz, Cambridge University Press (2001). ;; and Nachum Dershowitz, Cambridge University Press (2018).
;; An earlier version of the technical details appeared in ;; An earlier version of the technical details appeared in "Calendrical
;; ``Calendrical Calculations'' by Nachum Dershowitz and Edward M. Reingold, ;; Calculations" by Nachum Dershowitz and Edward M. Reingold,
;; Software--Practice and Experience, Volume 20, Number 9 (September, 1990), ;; Software--Practice and Experience, Volume 20, Number 9 (September, 1990),
;; pages 899-928, and in ``Calendrical Calculations, Part II: Three Historical ;; pages 899-928 <https://doi.org/10.1002/spe.4380200905>
;; Calendars'' by E. M. Reingold, N. Dershowitz, and S. M. Clamen, ;; <https://pdfs.semanticscholar.org/83b1/14f570002a7a8e1d4e3730cd0e4cdbcad212.pdf>,
;; Software--Practice and Experience, Volume 23, Number 4 (April, 1993), ;; and in "Calendrical Calculations, Part II: Three Historical Calendars" by
;; pages 383-404. ;; E. M. Reingold, N. Dershowitz, and S. M. Clamen, Software--Practice and
;; Experience, Volume 23, Number 4 (April, 1993), pages 383-404
;; Hard copies of these two papers can be obtained by sending email to ;; <https://doi.org/10.1002/spe.4380230404>
;; reingold@cs.uiuc.edu with the SUBJECT "send-paper-cal" (no quotes) and ;; <http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.42.6421&rep=rep1&type=pdf>
;; the message BODY containing your mailing address (snail).
;; A note on free variables: ;; A note on free variables:
@ -1916,10 +1915,12 @@ use instead of point."
The absolute date is the number of days elapsed since the (imaginary) The absolute date is the number of days elapsed since the (imaginary)
Gregorian date Sunday, December 31, 1 BC. This function does not Gregorian date Sunday, December 31, 1 BC. This function does not
handle dates in years BC." handle dates in years BC."
;; See the footnote on page 384 of ``Calendrical Calculations, Part II: ;; For an explanation, see the footnote on page 384 of "Calendrical
;; Three Historical Calendars'' by E. M. Reingold, N. Dershowitz, and S. M. ;; Calculations, Part II: Three Historical Calendars" by
;; Clamen, Software--Practice and Experience, Volume 23, Number 4 ;; E. M. Reingold, N. Dershowitz, and S. M. Clamen,
;; (April, 1993), pages 383-404 for an explanation. ;; Software--Practice and Experience, Volume 23, Number 4 (April,
;; 1993), pages 383-404 <https://doi.org/10.1002/spe.4380230404>
;; <http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.42.6421&rep=rep1&type=pdf>.
(let* ((d0 (1- date)) (let* ((d0 (1- date))
(n400 (/ d0 146097)) (n400 (/ d0 146097))
(d1 (% d0 146097)) (d1 (% d0 146097))