(math-julian-date-beginning,math-julian-date-beginning-int) New constants.

(math-format-date-part,math-parse-standard-date,calcFunc-julian):
Use the new constants.

diff --git a/lisp/calc/calc-forms.el b/lisp/calc/calc-forms.el
index 1ffe06249bd7fa5d1413c6aec34bfef4b435ad8a..5f31980099908412ad9bcc63ac316bc5e509d33a 100644 (file)
--- a/lisp/calc/calc-forms.el
+++ b/lisp/calc/calc-forms.el
@@ -544,6 +544,14 @@
               (setcdr math-fd-dt nil))
          fmt))))
 
+(defconst math-julian-date-beginning '(float 17214235 -1)
+  "The beginning of the Julian calendar,
+as measured in the number of days before January 1 of the year 1AD.")
+
+(defconst math-julian-date-beginning-int 1721424
+  "The beginning of the Julian calendar,
+as measured in the integer number of days before January 1 of the year 1AD.")
+
 (defun math-format-date-part (x)
   (cond ((stringp x)
         x)
@@ -559,14 +567,11 @@
         (math-format-number (math-floor math-fd-date)))
        ((eq x 'J)
         (math-format-number 
-          (math-add math-fd-date 
-                    (eval-when-compile
-                      (math-read-number-simple "1721423.5")))))
+          (math-add math-fd-date math-julian-date-beginning)))
        ((eq x 'j)
         (math-format-number (math-add 
                               (math-floor math-fd-date) 
-                              (eval-when-compile
-                                (math-read-number-simple "1721424")))))
+                              math-julian-date-beginning-int)))
        ((eq x 'U)
         (math-format-number (nth 1 (math-date-parts math-fd-date 719164))))
        ((progn
@@ -941,10 +946,8 @@
                                              0
                                            (if (or (eq this 'j)
                                                    (math-integerp num))
-                                                (eval-when-compile
-                                                  (math-read-number-simple "1721424"))
-                                              (eval-when-compile
-                                                (math-read-number-simple "1721423.5")))))
+                                                math-julian-date-beginning-int
+                                              math-julian-date-beginning)))
                            hour (or (nth 3 num) hour)
                            minute (or (nth 4 num) minute)
                            second (or (nth 5 num) second)
@@ -1153,20 +1156,14 @@
 (defun calcFunc-julian (date &optional zone)
   (if (math-realp date)
       (list 'date (if (math-integerp date)
-                     (math-sub date (eval-when-compile
-                                       (math-read-number-simple "1721424")))
-                   (setq date (math-sub date 
-                                         (eval-when-compile
-                                           (math-read-number-simple "1721423.5"))))
+                     (math-sub date math-julian-date-beginning-int)
+                   (setq date (math-sub date math-julian-date-beginning))
                    (math-sub date (math-div (calcFunc-tzone zone date)
                                             '(float 864 2)))))
     (if (eq (car date) 'date)
        (math-add (nth 1 date) (if (math-integerp (nth 1 date))
-                                   (eval-when-compile
-                                     (math-read-number-simple "1721424"))
-                                (math-add  
-                                  (eval-when-compile
-                                    (math-read-number-simple "1721423.5"))
+                                   math-julian-date-beginning-int
+                                (math-add math-julian-date-beginning
                                           (math-div (calcFunc-tzone zone date)
                                                     '(float 864 2)))))
       (math-reject-arg date 'datep))))