1;;; calc-forms.el --- data format conversion functions for Calc 2 3;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004, 4;; 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: David Gillespie <daveg@synaptics.com> 7;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com> 8 9;; This file is part of GNU Emacs. 10 11;; GNU Emacs is free software; you can redistribute it and/or modify 12;; it under the terms of the GNU General Public License as published by 13;; the Free Software Foundation; either version 2, or (at your option) 14;; any later version. 15 16;; GNU Emacs is distributed in the hope that it will be useful, 17;; but WITHOUT ANY WARRANTY; without even the implied warranty of 18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19;; GNU General Public License for more details. 20 21;; You should have received a copy of the GNU General Public License 22;; along with GNU Emacs; see the file COPYING. If not, write to the 23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24;; Boston, MA 02110-1301, USA. 25 26;;; Commentary: 27 28;;; Code: 29 30;; This file is autoloaded from calc-ext.el. 31 32(require 'calc-ext) 33(require 'calc-macs) 34 35(defun calc-time () 36 (interactive) 37 (calc-wrapper 38 (let ((time (current-time-string))) 39 (calc-enter-result 0 "time" 40 (list 'mod 41 (list 'hms 42 (string-to-number (substring time 11 13)) 43 (string-to-number (substring time 14 16)) 44 (string-to-number (substring time 17 19))) 45 (list 'hms 24 0 0)))))) 46 47(defun calc-to-hms (arg) 48 (interactive "P") 49 (calc-wrapper 50 (if (calc-is-inverse) 51 (if (eq calc-angle-mode 'rad) 52 (calc-unary-op ">rad" 'calcFunc-rad arg) 53 (calc-unary-op ">deg" 'calcFunc-deg arg)) 54 (calc-unary-op ">hms" 'calcFunc-hms arg)))) 55 56(defun calc-from-hms (arg) 57 (interactive "P") 58 (calc-invert-func) 59 (calc-to-hms arg)) 60 61 62(defun calc-hms-notation (fmt) 63 (interactive "sHours-minutes-seconds format (hms, @ ' \", etc.): ") 64 (calc-wrapper 65 (if (string-match "\\`\\([^,; ]+\\)\\([,; ]*\\)\\([^,; ]\\)\\([,; ]*\\)\\([^,; ]\\)\\'" fmt) 66 (progn 67 (calc-change-mode 'calc-hms-format 68 (concat "%s" (math-match-substring fmt 1) 69 (math-match-substring fmt 2) 70 "%s" (math-match-substring fmt 3) 71 (math-match-substring fmt 4) 72 "%s" (math-match-substring fmt 5)) 73 t) 74 (setq-default calc-hms-format calc-hms-format)) ; for minibuffer 75 (error "Bad hours-minutes-seconds format")))) 76 77(defun calc-date-notation (fmt arg) 78 (interactive "sDate format (e.g., M/D/YY h:mm:ss): \nP") 79 (calc-wrapper 80 (if (equal fmt "") 81 (setq fmt "1")) 82 (if (string-match "\\` *[0-9] *\\'" fmt) 83 (setq fmt (nth (string-to-number fmt) calc-standard-date-formats))) 84 (or (string-match "[a-zA-Z]" fmt) 85 (error "Bad date format specifier")) 86 (and arg 87 (>= (setq arg (prefix-numeric-value arg)) 0) 88 (<= arg 9) 89 (setq calc-standard-date-formats 90 (copy-sequence calc-standard-date-formats)) 91 (setcar (nthcdr arg calc-standard-date-formats) fmt)) 92 (let ((case-fold-search nil)) 93 (and (not (string-match "<.*>" fmt)) 94 (string-match "\\`[^hHspP]*\\([^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*[bBhHmpPsS]+[^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*\\)[^hHspP]*\\'" fmt) 95 (string-match (concat "[^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*" 96 (regexp-quote (math-match-substring fmt 1)) 97 "[^ac-gi-lnoqrt-zAC-GI-OQRT-Z]*") fmt) 98 (setq fmt (concat (substring fmt 0 (match-beginning 0)) 99 "<" 100 (substring fmt (match-beginning 0) (match-end 0)) 101 ">" 102 (substring fmt (match-end 0)))))) 103 (let ((lfmt nil) 104 (fullfmt nil) 105 (time nil) 106 pos pos2 sym temp) 107 (let ((case-fold-search nil)) 108 (and (setq temp (string-match ":[BS]S" fmt)) 109 (aset fmt temp ?C))) 110 (while (setq pos (string-match "[<>a-zA-Z]" fmt)) 111 (if (> pos 0) 112 (setq lfmt (cons (substring fmt 0 pos) lfmt))) 113 (setq pos2 (1+ pos)) 114 (cond ((= (aref fmt pos) ?\<) 115 (and time (error "Nested <'s not allowed")) 116 (and lfmt (setq fullfmt (nconc lfmt fullfmt) 117 lfmt nil)) 118 (setq time t)) 119 ((= (aref fmt pos) ?\>) 120 (or time (error "Misplaced > in format")) 121 (and lfmt (setq fullfmt (cons (nreverse lfmt) fullfmt) 122 lfmt nil)) 123 (setq time nil)) 124 (t 125 (if (string-match "\\`[^a-zA-Z]*[bB][a-zA-Z]" fmt) 126 (setq pos2 (1+ pos2))) 127 (while (and (< pos2 (length fmt)) 128 (= (upcase (aref fmt pos2)) 129 (upcase (aref fmt (1- pos2))))) 130 (setq pos2 (1+ pos2))) 131 (setq sym (intern (substring fmt pos pos2))) 132 (or (memq sym '(Y YY BY YYY YYYY 133 aa AA aaa AAA aaaa AAAA 134 bb BB bbb BBB bbbb BBBB 135 M MM BM mmm Mmm Mmmm MMM MMMM 136 D DD BD d ddd bdd 137 W www Www Wwww WWW WWWW 138 h hh bh H HH BH 139 p P pp PP pppp PPPP 140 m mm bm s ss bss SS BS C 141 N n J j U b)) 142 (and (eq sym 'X) (not lfmt) (not fullfmt)) 143 (error "Bad format code: %s" sym)) 144 (and (memq sym '(bb BB bbb BBB bbbb BBBB)) 145 (setq lfmt (cons 'b lfmt))) 146 (setq lfmt (cons sym lfmt)))) 147 (setq fmt (substring fmt pos2))) 148 (or (equal fmt "") 149 (setq lfmt (cons fmt lfmt))) 150 (and lfmt (if time 151 (setq fullfmt (cons (nreverse lfmt) fullfmt)) 152 (setq fullfmt (nconc lfmt fullfmt)))) 153 (calc-change-mode 'calc-date-format (nreverse fullfmt) t)))) 154 155 156(defun calc-hms-mode () 157 (interactive) 158 (calc-wrapper 159 (calc-change-mode 'calc-angle-mode 'hms) 160 (message "Angles measured in degrees-minutes-seconds"))) 161 162 163(defun calc-now (arg) 164 (interactive "P") 165 (calc-date-zero-args "now" 'calcFunc-now arg)) 166 167(defun calc-date-part (arg) 168 (interactive "NPart code (1-9 = Y,M,D,H,M,S,Wd,Yd,Hms): ") 169 (if (or (< arg 1) (> arg 9)) 170 (error "Part code out of range")) 171 (calc-wrapper 172 (calc-enter-result 1 173 (nth arg '(nil "year" "mnth" "day" "hour" "minu" 174 "sec" "wday" "yday" "hmst")) 175 (list (nth arg '(nil calcFunc-year calcFunc-month 176 calcFunc-day calcFunc-hour 177 calcFunc-minute calcFunc-second 178 calcFunc-weekday calcFunc-yearday 179 calcFunc-time)) 180 (calc-top-n 1))))) 181 182(defun calc-date (arg) 183 (interactive "p") 184 (if (or (< arg 1) (> arg 6)) 185 (error "Between one and six arguments are allowed")) 186 (calc-wrapper 187 (calc-enter-result arg "date" (cons 'calcFunc-date (calc-top-list-n arg))))) 188 189(defun calc-julian (arg) 190 (interactive "P") 191 (calc-date-one-arg "juln" 'calcFunc-julian arg)) 192 193(defun calc-unix-time (arg) 194 (interactive "P") 195 (calc-date-one-arg "unix" 'calcFunc-unixtime arg)) 196 197(defun calc-time-zone (arg) 198 (interactive "P") 199 (calc-date-zero-args "zone" 'calcFunc-tzone arg)) 200 201(defun calc-convert-time-zones (old &optional new) 202 (interactive "sFrom time zone: ") 203 (calc-wrapper 204 (if (equal old "$") 205 (calc-enter-result 3 "tzcv" (cons 'calcFunc-tzconv (calc-top-list-n 3))) 206 (if (equal old "") (setq old "local")) 207 (or new 208 (setq new (read-string (concat "From time zone: " old 209 ", to zone: ")))) 210 (if (stringp old) (setq old (math-read-expr old))) 211 (if (eq (car-safe old) 'error) 212 (error "Error in expression: %S" (nth 1 old))) 213 (if (equal new "") (setq new "local")) 214 (if (stringp new) (setq new (math-read-expr new))) 215 (if (eq (car-safe new) 'error) 216 (error "Error in expression: %S" (nth 1 new))) 217 (calc-enter-result 1 "tzcv" (list 'calcFunc-tzconv 218 (calc-top-n 1) old new))))) 219 220(defun calc-new-week (arg) 221 (interactive "P") 222 (calc-date-one-arg "nwwk" 'calcFunc-newweek arg)) 223 224(defun calc-new-month (arg) 225 (interactive "P") 226 (calc-date-one-arg "nwmn" 'calcFunc-newmonth arg)) 227 228(defun calc-new-year (arg) 229 (interactive "P") 230 (calc-date-one-arg "nwyr" 'calcFunc-newyear arg)) 231 232(defun calc-inc-month (arg) 233 (interactive "p") 234 (calc-date-one-arg "incm" 'calcFunc-incmonth arg)) 235 236(defun calc-business-days-plus (arg) 237 (interactive "P") 238 (calc-wrapper 239 (calc-binary-op "bus+" 'calcFunc-badd arg))) 240 241(defun calc-business-days-minus (arg) 242 (interactive "P") 243 (calc-wrapper 244 (calc-binary-op "bus-" 'calcFunc-bsub arg))) 245 246(defun calc-date-zero-args (prefix func arg) 247 (calc-wrapper 248 (if (consp arg) 249 (calc-enter-result 1 prefix (list func (calc-top-n 1))) 250 (calc-enter-result 0 prefix (if arg 251 (list func (prefix-numeric-value arg)) 252 (list func)))))) 253 254(defun calc-date-one-arg (prefix func arg) 255 (calc-wrapper 256 (if (consp arg) 257 (calc-enter-result 2 prefix (cons func (calc-top-list-n 2))) 258 (calc-enter-result 1 prefix (if arg 259 (list func (calc-top-n 1) 260 (prefix-numeric-value arg)) 261 (list func (calc-top-n 1))))))) 262 263 264;;;; Hours-minutes-seconds forms. 265 266(defun math-normalize-hms (a) 267 (let ((h (math-normalize (nth 1 a))) 268 (m (math-normalize (nth 2 a))) 269 (s (let ((calc-internal-prec (max (- calc-internal-prec 4) 3))) 270 (math-normalize (nth 3 a))))) 271 (if (math-negp h) 272 (progn 273 (if (math-posp s) 274 (setq s (math-add s -60) 275 m (math-add m 1))) 276 (if (math-posp m) 277 (setq m (math-add m -60) 278 h (math-add h 1))) 279 (if (not (Math-lessp -60 s)) 280 (setq s (math-add s 60) 281 m (math-add m -1))) 282 (if (not (Math-lessp -60 m)) 283 (setq m (math-add m 60) 284 h (math-add h -1)))) 285 (if (math-negp s) 286 (setq s (math-add s 60) 287 m (math-add m -1))) 288 (if (math-negp m) 289 (setq m (math-add m 60) 290 h (math-add h -1))) 291 (if (not (Math-lessp s 60)) 292 (setq s (math-add s -60) 293 m (math-add m 1))) 294 (if (not (Math-lessp m 60)) 295 (setq m (math-add m -60) 296 h (math-add h 1)))) 297 (if (and (eq (car-safe s) 'float) 298 (<= (+ (math-numdigs (nth 1 s)) (nth 2 s)) 299 (- 2 calc-internal-prec))) 300 (setq s 0)) 301 (list 'hms h m s))) 302 303;;; Convert A from ANG or current angular mode to HMS format. 304(defun math-to-hms (a &optional ang) ; [X R] [Public] 305 (cond ((eq (car-safe a) 'hms) a) 306 ((eq (car-safe a) 'sdev) 307 (math-make-sdev (math-to-hms (nth 1 a)) 308 (math-to-hms (nth 2 a)))) 309 ((not (Math-numberp a)) 310 (list 'calcFunc-hms a)) 311 ((math-negp a) 312 (math-neg (math-to-hms (math-neg a) ang))) 313 ((eq (or ang calc-angle-mode) 'rad) 314 (math-to-hms (math-div a (math-pi-over-180)) 'deg)) 315 ((memq (car-safe a) '(cplx polar)) a) 316 (t 317 ;(setq a (let ((calc-internal-prec (max (1- calc-internal-prec) 3))) 318 ; (math-normalize a))) 319 (math-normalize 320 (let* ((b (math-mul a 3600)) 321 (hm (math-trunc (math-div b 60))) 322 (hmd (math-idivmod hm 60))) 323 (list 'hms 324 (car hmd) 325 (cdr hmd) 326 (math-sub b (math-mul hm 60)))))))) 327(defun calcFunc-hms (h &optional m s) 328 (or (Math-realp h) (math-reject-arg h 'realp)) 329 (or m (setq m 0)) 330 (or (Math-realp m) (math-reject-arg m 'realp)) 331 (or s (setq s 0)) 332 (or (Math-realp s) (math-reject-arg s 'realp)) 333 (if (and (not (Math-lessp m 0)) (Math-lessp m 60) 334 (not (Math-lessp s 0)) (Math-lessp s 60)) 335 (math-add (math-to-hms h) 336 (list 'hms 0 m s)) 337 (math-to-hms (math-add h 338 (math-add (math-div (or m 0) 60) 339 (math-div (or s 0) 3600))) 340 'deg))) 341 342;;; Convert A from HMS format to ANG or current angular mode. 343(defun math-from-hms (a &optional ang) ; [R X] [Public] 344 (cond ((not (eq (car-safe a) 'hms)) 345 (if (Math-numberp a) 346 a 347 (if (eq (car-safe a) 'sdev) 348 (math-make-sdev (math-from-hms (nth 1 a) ang) 349 (math-from-hms (nth 2 a) ang)) 350 (if (eq (or ang calc-angle-mode) 'rad) 351 (list 'calcFunc-rad a) 352 (list 'calcFunc-deg a))))) 353 ((math-negp a) 354 (math-neg (math-from-hms (math-neg a) ang))) 355 ((eq (or ang calc-angle-mode) 'rad) 356 (math-mul (math-from-hms a 'deg) (math-pi-over-180))) 357 (t 358 (math-add (math-div (math-add (math-div (nth 3 a) 359 '(float 6 1)) 360 (nth 2 a)) 361 60) 362 (nth 1 a))))) 363 364;;;; Date forms. 365 366 367;;; Some of these functions are adapted from Edward Reingold's "calendar.el". 368;;; These versions are rewritten to use arbitrary-size integers. 369;;; The Julian calendar is used up to 9/2/1752, after which the Gregorian 370;;; calendar is used; the first day after 9/2/1752 is 9/14/1752. 371 372;;; A numerical date is the number of days since midnight on 373;;; the morning of January 1, 1 A.D. If the date is a non-integer, 374;;; it represents a specific date and time. 375;;; A "dt" is a list of the form, (year month day), corresponding to 376;;; an integer code, or (year month day hour minute second), corresponding 377;;; to a non-integer code. 378 379(defun math-date-to-dt (value) 380 (if (eq (car-safe value) 'date) 381 (setq value (nth 1 value))) 382 (or (math-realp value) 383 (math-reject-arg value 'datep)) 384 (let* ((parts (math-date-parts value)) 385 (date (car parts)) 386 (time (nth 1 parts)) 387 (month 1) 388 day 389 (year (math-quotient (math-add date (if (Math-lessp date 711859) 390 365 ; for speed, we take 391 -108)) ; >1950 as a special case 392 (if (math-negp value) 366 365))) 393 ; this result may be an overestimate 394 temp) 395 (while (Math-lessp date (setq temp (math-absolute-from-date year 1 1))) 396 (setq year (math-add year -1))) 397 (if (eq year 0) (setq year -1)) 398 (setq date (1+ (math-sub date temp))) 399 (and (eq year 1752) (>= date 247) 400 (setq date (+ date 11))) 401 (setq temp (if (math-leap-year-p year) 402 [1 32 61 92 122 153 183 214 245 275 306 336 999] 403 [1 32 60 91 121 152 182 213 244 274 305 335 999])) 404 (while (>= date (aref temp month)) 405 (setq month (1+ month))) 406 (setq day (1+ (- date (aref temp (1- month))))) 407 (if (math-integerp value) 408 (list year month day) 409 (list year month day 410 (/ time 3600) 411 (% (/ time 60) 60) 412 (math-add (% time 60) (nth 2 parts)))))) 413 414(defun math-dt-to-date (dt) 415 (or (integerp (nth 1 dt)) 416 (math-reject-arg (nth 1 dt) 'fixnump)) 417 (if (or (< (nth 1 dt) 1) (> (nth 1 dt) 12)) 418 (math-reject-arg (nth 1 dt) "Month value is out of range")) 419 (or (integerp (nth 2 dt)) 420 (math-reject-arg (nth 2 dt) 'fixnump)) 421 (if (or (< (nth 2 dt) 1) (> (nth 2 dt) 31)) 422 (math-reject-arg (nth 2 dt) "Day value is out of range")) 423 (let ((date (math-absolute-from-date (car dt) (nth 1 dt) (nth 2 dt)))) 424 (if (nth 3 dt) 425 (math-add (math-float date) 426 (math-div (math-add (+ (* (nth 3 dt) 3600) 427 (* (nth 4 dt) 60)) 428 (nth 5 dt)) 429 '(float 864 2))) 430 date))) 431 432(defun math-date-parts (value &optional offset) 433 (let* ((date (math-floor value)) 434 (time (math-round (math-mul (math-sub value (or offset date)) 86400) 435 (and (> calc-internal-prec 12) 436 (- calc-internal-prec 12)))) 437 (ftime (math-floor time))) 438 (list date 439 ftime 440 (math-sub time ftime)))) 441 442 443(defun math-this-year () 444 (string-to-number (substring (current-time-string) -4))) 445 446(defun math-leap-year-p (year) 447 (if (Math-lessp year 1752) 448 (if (math-negp year) 449 (= (math-imod (math-neg year) 4) 1) 450 (= (math-imod year 4) 0)) 451 (setq year (math-imod year 400)) 452 (or (and (= (% year 4) 0) (/= (% year 100) 0)) 453 (= year 0)))) 454 455(defun math-days-in-month (year month) 456 (if (and (= month 2) (math-leap-year-p year)) 457 29 458 (aref [31 28 31 30 31 30 31 31 30 31 30 31] (1- month)))) 459 460(defun math-day-number (year month day) 461 (let ((day-of-year (+ day (* 31 (1- month))))) 462 (if (> month 2) 463 (progn 464 (setq day-of-year (- day-of-year (/ (+ 23 (* 4 month)) 10))) 465 (if (math-leap-year-p year) 466 (setq day-of-year (1+ day-of-year))))) 467 (and (eq year 1752) 468 (or (> month 9) 469 (and (= month 9) (>= day 14))) 470 (setq day-of-year (- day-of-year 11))) 471 day-of-year)) 472 473(defun math-absolute-from-date (year month day) 474 (if (eq year 0) (setq year -1)) 475 (let ((yearm1 (math-sub year 1))) 476 (math-sub (math-add (math-day-number year month day) 477 (math-add (math-mul 365 yearm1) 478 (if (math-posp year) 479 (math-quotient yearm1 4) 480 (math-sub 365 481 (math-quotient (math-sub 3 year) 482 4))))) 483 (if (or (Math-lessp year 1753) 484 (and (eq year 1752) (<= month 9))) 485 1 486 (let ((correction (math-mul (math-quotient yearm1 100) 3))) 487 (let ((res (math-idivmod correction 4))) 488 (math-add (if (= (cdr res) 0) 489 -1 490 0) 491 (car res)))))))) 492 493 494;;; It is safe to redefine these in your .emacs file to use a different 495;;; language. 496 497(defvar math-long-weekday-names '( "Sunday" "Monday" "Tuesday" "Wednesday" 498 "Thursday" "Friday" "Saturday" )) 499(defvar math-short-weekday-names '( "Sun" "Mon" "Tue" "Wed" 500 "Thu" "Fri" "Sat" )) 501 502(defvar math-long-month-names '( "January" "February" "March" "April" 503 "May" "June" "July" "August" 504 "September" "October" "November" "December" )) 505(defvar math-short-month-names '( "Jan" "Feb" "Mar" "Apr" "May" "Jun" 506 "Jul" "Aug" "Sep" "Oct" "Nov" "Dec" )) 507 508 509(defvar math-format-date-cache nil) 510 511;; The variables math-fd-date, math-fd-dt, math-fd-year, 512;; math-fd-month, math-fd-day, math-fd-weekday, math-fd-hour, 513;; math-fd-minute, math-fd-second, math-fd-bc-flag are local 514;; to math-format-date, but are used by math-format-date-part, 515;; which is called by math-format-date. 516(defvar math-fd-date) 517(defvar math-fd-dt) 518(defvar math-fd-year) 519(defvar math-fd-month) 520(defvar math-fd-day) 521(defvar math-fd-weekday) 522(defvar math-fd-hour) 523(defvar math-fd-minute) 524(defvar math-fd-second) 525(defvar math-fd-bc-flag) 526 527(defun math-format-date (math-fd-date) 528 (if (eq (car-safe math-fd-date) 'date) 529 (setq math-fd-date (nth 1 math-fd-date))) 530 (let ((entry (list math-fd-date calc-internal-prec calc-date-format))) 531 (or (cdr (assoc entry math-format-date-cache)) 532 (let* ((math-fd-dt nil) 533 (calc-group-digits nil) 534 (calc-leading-zeros nil) 535 (calc-number-radix 10) 536 math-fd-year math-fd-month math-fd-day math-fd-weekday 537 math-fd-hour math-fd-minute math-fd-second 538 (math-fd-bc-flag nil) 539 (fmt (apply 'concat (mapcar 'math-format-date-part 540 calc-date-format)))) 541 (setq math-format-date-cache (cons (cons entry fmt) 542 math-format-date-cache)) 543 (and (setq math-fd-dt (nthcdr 10 math-format-date-cache)) 544 (setcdr math-fd-dt nil)) 545 fmt)))) 546 547(defun math-format-date-part (x) 548 (cond ((stringp x) 549 x) 550 ((listp x) 551 (if (math-integerp math-fd-date) 552 "" 553 (apply 'concat (mapcar 'math-format-date-part x)))) 554 ((eq x 'X) 555 "") 556 ((eq x 'N) 557 (math-format-number math-fd-date)) 558 ((eq x 'n) 559 (math-format-number (math-floor math-fd-date))) 560 ((eq x 'J) 561 (math-format-number (math-add math-fd-date '(float (bigpos 235 214 17) -1)))) 562 ((eq x 'j) 563 (math-format-number (math-add (math-floor math-fd-date) '(bigpos 424 721 1)))) 564 ((eq x 'U) 565 (math-format-number (nth 1 (math-date-parts math-fd-date 719164)))) 566 ((progn 567 (or math-fd-dt 568 (progn 569 (setq math-fd-dt (math-date-to-dt math-fd-date) 570 math-fd-year (car math-fd-dt) 571 math-fd-month (nth 1 math-fd-dt) 572 math-fd-day (nth 2 math-fd-dt) 573 math-fd-weekday (math-mod 574 (math-add (math-floor math-fd-date) 6) 7) 575 math-fd-hour (nth 3 math-fd-dt) 576 math-fd-minute (nth 4 math-fd-dt) 577 math-fd-second (nth 5 math-fd-dt)) 578 (and (memq 'b calc-date-format) 579 (math-negp math-fd-year) 580 (setq math-fd-year (math-neg math-fd-year) 581 math-fd-bc-flag t)))) 582 (memq x '(Y YY BY))) 583 (if (and (integerp math-fd-year) (> math-fd-year 1940) (< math-fd-year 2040)) 584 (format (cond ((eq x 'YY) "%02d") 585 ((eq x 'BYY) "%2d") 586 (t "%d")) 587 (% math-fd-year 100)) 588 (if (and (natnump math-fd-year) (< math-fd-year 100)) 589 (format "+%d" math-fd-year) 590 (math-format-number math-fd-year)))) 591 ((eq x 'YYY) 592 (math-format-number math-fd-year)) 593 ((eq x 'YYYY) 594 (if (and (natnump math-fd-year) (< math-fd-year 100)) 595 (format "+%d" math-fd-year) 596 (math-format-number math-fd-year))) 597 ((eq x 'b) "") 598 ((eq x 'aa) 599 (and (not math-fd-bc-flag) "ad")) 600 ((eq x 'AA) 601 (and (not math-fd-bc-flag) "AD")) 602 ((eq x 'aaa) 603 (and (not math-fd-bc-flag) "ad ")) 604 ((eq x 'AAA) 605 (and (not math-fd-bc-flag) "AD ")) 606 ((eq x 'aaaa) 607 (and (not math-fd-bc-flag) "a.d.")) 608 ((eq x 'AAAA) 609 (and (not math-fd-bc-flag) "A.D.")) 610 ((eq x 'bb) 611 (and math-fd-bc-flag "bc")) 612 ((eq x 'BB) 613 (and math-fd-bc-flag "BC")) 614 ((eq x 'bbb) 615 (and math-fd-bc-flag " bc")) 616 ((eq x 'BBB) 617 (and math-fd-bc-flag " BC")) 618 ((eq x 'bbbb) 619 (and math-fd-bc-flag "b.c.")) 620 ((eq x 'BBBB) 621 (and math-fd-bc-flag "B.C.")) 622 ((eq x 'M) 623 (format "%d" math-fd-month)) 624 ((eq x 'MM) 625 (format "%02d" math-fd-month)) 626 ((eq x 'BM) 627 (format "%2d" math-fd-month)) 628 ((eq x 'mmm) 629 (downcase (nth (1- math-fd-month) math-short-month-names))) 630 ((eq x 'Mmm) 631 (nth (1- math-fd-month) math-short-month-names)) 632 ((eq x 'MMM) 633 (upcase (nth (1- math-fd-month) math-short-month-names))) 634 ((eq x 'Mmmm) 635 (nth (1- math-fd-month) math-long-month-names)) 636 ((eq x 'MMMM) 637 (upcase (nth (1- math-fd-month) math-long-month-names))) 638 ((eq x 'D) 639 (format "%d" math-fd-day)) 640 ((eq x 'DD) 641 (format "%02d" math-fd-day)) 642 ((eq x 'BD) 643 (format "%2d" math-fd-day)) 644 ((eq x 'W) 645 (format "%d" math-fd-weekday)) 646 ((eq x 'www) 647 (downcase (nth math-fd-weekday math-short-weekday-names))) 648 ((eq x 'Www) 649 (nth math-fd-weekday math-short-weekday-names)) 650 ((eq x 'WWW) 651 (upcase (nth math-fd-weekday math-short-weekday-names))) 652 ((eq x 'Wwww) 653 (nth math-fd-weekday math-long-weekday-names)) 654 ((eq x 'WWWW) 655 (upcase (nth math-fd-weekday math-long-weekday-names))) 656 ((eq x 'd) 657 (format "%d" (math-day-number math-fd-year math-fd-month math-fd-day))) 658 ((eq x 'ddd) 659 (format "%03d" (math-day-number math-fd-year math-fd-month math-fd-day))) 660 ((eq x 'bdd) 661 (format "%3d" (math-day-number math-fd-year math-fd-month math-fd-day))) 662 ((eq x 'h) 663 (and math-fd-hour (format "%d" math-fd-hour))) 664 ((eq x 'hh) 665 (and math-fd-hour (format "%02d" math-fd-hour))) 666 ((eq x 'bh) 667 (and math-fd-hour (format "%2d" math-fd-hour))) 668 ((eq x 'H) 669 (and math-fd-hour (format "%d" (1+ (% (+ math-fd-hour 11) 12))))) 670 ((eq x 'HH) 671 (and math-fd-hour (format "%02d" (1+ (% (+ math-fd-hour 11) 12))))) 672 ((eq x 'BH) 673 (and math-fd-hour (format "%2d" (1+ (% (+ math-fd-hour 11) 12))))) 674 ((eq x 'p) 675 (and math-fd-hour (if (< math-fd-hour 12) "a" "p"))) 676 ((eq x 'P) 677 (and math-fd-hour (if (< math-fd-hour 12) "A" "P"))) 678 ((eq x 'pp) 679 (and math-fd-hour (if (< math-fd-hour 12) "am" "pm"))) 680 ((eq x 'PP) 681 (and math-fd-hour (if (< math-fd-hour 12) "AM" "PM"))) 682 ((eq x 'pppp) 683 (and math-fd-hour (if (< math-fd-hour 12) "a.m." "p.m."))) 684 ((eq x 'PPPP) 685 (and math-fd-hour (if (< math-fd-hour 12) "A.M." "P.M."))) 686 ((eq x 'm) 687 (and math-fd-minute (format "%d" math-fd-minute))) 688 ((eq x 'mm) 689 (and math-fd-minute (format "%02d" math-fd-minute))) 690 ((eq x 'bm) 691 (and math-fd-minute (format "%2d" math-fd-minute))) 692 ((eq x 'C) 693 (and math-fd-second (not (math-zerop math-fd-second)) 694 ":")) 695 ((memq x '(s ss bs SS BS)) 696 (and math-fd-second 697 (not (and (memq x '(SS BS)) (math-zerop math-fd-second))) 698 (if (integerp math-fd-second) 699 (format (cond ((memq x '(ss SS)) "%02d") 700 ((memq x '(bs BS)) "%2d") 701 (t "%d")) 702 math-fd-second) 703 (concat (if (Math-lessp math-fd-second 10) 704 (cond ((memq x '(ss SS)) "0") 705 ((memq x '(bs BS)) " ") 706 (t "")) 707 "") 708 (let ((calc-float-format 709 (list 'fix (min (- 12 calc-internal-prec) 710 0)))) 711 (math-format-number math-fd-second)))))))) 712 713;; The variable math-pd-str is local to math-parse-date and 714;; math-parse-standard-date, but is used by math-parse-date-word, 715;; which is called by math-parse-date and math-parse-standard-date. 716(defvar math-pd-str) 717 718(defun math-parse-date (math-pd-str) 719 (catch 'syntax 720 (or (math-parse-standard-date math-pd-str t) 721 (math-parse-standard-date math-pd-str nil) 722 (and (string-match "\\`[^-+/0-9a-zA-Z]*\\([-+]?[0-9]+\\.?[0-9]*\\([eE][-+]?[0-9]+\\)?\\)[^-+/0-9a-zA-Z]*\\'" math-pd-str) 723 (list 'date (math-read-number (math-match-substring math-pd-str 1)))) 724 (let ((case-fold-search t) 725 (year nil) (month nil) (day nil) (weekday nil) 726 (hour nil) (minute nil) (second nil) (bc-flag nil) 727 (a nil) (b nil) (c nil) (bigyear nil) temp) 728 729 ;; Extract the time, if any. 730 (if (or (string-match "\\([0-9][0-9]?\\):\\([0-9][0-9]?\\)\\(:\\([0-9][0-9]?\\(\\.[0-9]+\\)?\\)\\)? *\\([ap]\\>\\|[ap]m\\|[ap]\\. *m\\.\\|noon\\|n\\>\\|midnight\\|mid\\>\\|m\\>\\)?" math-pd-str) 731 (string-match "\\([0-9][0-9]?\\)\\(\\)\\(\\(\\(\\)\\)\\) *\\([ap]\\>\\|[ap]m\\|[ap]\\. *m\\.\\|noon\\|n\\>\\|midnight\\|mid\\>\\|m\\>\\)" math-pd-str)) 732 (let ((ampm (math-match-substring math-pd-str 6))) 733 (setq hour (string-to-number (math-match-substring math-pd-str 1)) 734 minute (math-match-substring math-pd-str 2) 735 second (math-match-substring math-pd-str 4) 736 math-pd-str (concat (substring math-pd-str 0 (match-beginning 0)) 737 (substring math-pd-str (match-end 0)))) 738 (if (equal minute "") 739 (setq minute 0) 740 (setq minute (string-to-number minute))) 741 (if (equal second "") 742 (setq second 0) 743 (setq second (math-read-number second))) 744 (if (equal ampm "") 745 (if (> hour 23) 746 (throw 'syntax "Hour value out of range")) 747 (setq ampm (upcase (aref ampm 0))) 748 (if (memq ampm '(?N ?M)) 749 (if (and (= hour 12) (= minute 0) (eq second 0)) 750 (if (eq ampm ?M) (setq hour 0)) 751 (throw 'syntax 752 "Time must be 12:00:00 in this context")) 753 (if (or (= hour 0) (> hour 12)) 754 (throw 'syntax "Hour value out of range")) 755 (if (eq (= ampm ?A) (= hour 12)) 756 (setq hour (% (+ hour 12) 24))))))) 757 758 ;; Rewrite xx-yy-zz to xx/yy/zz to avoid seeing "-" as a minus sign. 759 (while (string-match "[0-9a-zA-Z]\\(-\\)[0-9a-zA-Z]" math-pd-str) 760 (progn 761 (setq math-pd-str (copy-sequence math-pd-str)) 762 (aset math-pd-str (match-beginning 1) ?\/))) 763 764 ;; Extract obvious month or weekday names. 765 (if (string-match "[a-zA-Z]" math-pd-str) 766 (progn 767 (setq month (math-parse-date-word math-long-month-names)) 768 (setq weekday (math-parse-date-word math-long-weekday-names)) 769 (or month (setq month 770 (math-parse-date-word math-short-month-names))) 771 (or weekday (math-parse-date-word math-short-weekday-names)) 772 (or hour 773 (if (setq temp (math-parse-date-word 774 '( "noon" "midnight" "mid" ))) 775 (setq hour (if (= temp 1) 12 0) minute 0 second 0))) 776 (or (math-parse-date-word '( "ad" "a.d." )) 777 (if (math-parse-date-word '( "bc" "b.c." )) 778 (setq bc-flag t))) 779 (if (string-match "[a-zA-Z]+" math-pd-str) 780 (throw 'syntax (format "Bad word in date: \"%s\"" 781 (math-match-substring math-pd-str 0)))))) 782 783 ;; If there is a huge number other than the year, ignore it. 784 (while (and (string-match "[-+]?0*[1-9][0-9][0-9][0-9][0-9]+" math-pd-str) 785 (setq temp (concat (substring math-pd-str 0 (match-beginning 0)) 786 (substring math-pd-str (match-end 0)))) 787 (string-match 788 "[4-9][0-9]\\|[0-9][0-9][0-9]\\|[-+][0-9]+[^-]*\\'" temp)) 789 (setq math-pd-str temp)) 790 791 ;; If there is a number with a sign or a large number, it is a year. 792 (if (or (string-match "\\([-+][0-9]+\\)[^-]*\\'" math-pd-str) 793 (string-match "\\(0*[1-9][0-9][0-9]+\\)" math-pd-str)) 794 (setq year (math-match-substring math-pd-str 1) 795 math-pd-str (concat (substring math-pd-str 0 (match-beginning 1)) 796 (substring math-pd-str (match-end 1))) 797 year (math-read-number year) 798 bigyear t)) 799 800 ;; Collect remaining numbers. 801 (setq temp 0) 802 (while (string-match "[0-9]+" math-pd-str temp) 803 (and c (throw 'syntax "Too many numbers in date")) 804 (setq c (string-to-number (math-match-substring math-pd-str 0))) 805 (or b (setq b c c nil)) 806 (or a (setq a b b nil)) 807 (setq temp (match-end 0))) 808 809 ;; Check that we have the right amount of information. 810 (setq temp (+ (if year 1 0) (if month 1 0) (if day 1 0) 811 (if a 1 0) (if b 1 0) (if c 1 0))) 812 (if (> temp 3) 813 (throw 'syntax "Too many numbers in date") 814 (if (or (< temp 2) (and year (= temp 2))) 815 (throw 'syntax "Not enough numbers in date") 816 (if (= temp 2) ; if year omitted, assume current year 817 (setq year (math-this-year))))) 818 819 ;; A large number must be a year. 820 (or year 821 (if (and a (or (> a 31) (< a 1))) 822 (setq year a a b b c c nil) 823 (if (and b (or (> b 31) (< b 1))) 824 (setq year b b c c nil) 825 (if (and c (or (> c 31) (< c 1))) 826 (setq year c c nil))))) 827 828 ;; A medium-large number must be a day. 829 (if year 830 (if (and a (> a 12)) 831 (setq day a a b b c c nil) 832 (if (and b (> b 12)) 833 (setq day b b c c nil) 834 (if (and c (> c 12)) 835 (setq day c c nil))))) 836 837 ;; We may know enough to sort it out now. 838 (if (and year day) 839 (or month (setq month a)) 840 (if (and year month) 841 (setq day a) 842 843 ;; Interpret order of numbers as same as for display format. 844 (setq temp calc-date-format) 845 (while temp 846 (cond ((not (symbolp (car temp)))) 847 ((memq (car temp) '(Y YY BY YYY YYYY)) 848 (or year (setq year a a b b c))) 849 ((memq (car temp) '(M MM BM mmm Mmm Mmmm MMM MMMM)) 850 (or month (setq month a a b b c))) 851 ((memq (car temp) '(D DD BD)) 852 (or day (setq day a a b b c)))) 853 (setq temp (cdr temp))) 854 855 ;; If display format was not complete, assume American style. 856 (or month (setq month a a b b c)) 857 (or day (setq day a a b b c)) 858 (or year (setq year a a b b c)))) 859 860 (if bc-flag 861 (setq year (math-neg (math-abs year)))) 862 863 (math-parse-date-validate year bigyear month day 864 hour minute second))))) 865 866(defun math-parse-date-validate (year bigyear month day hour minute second) 867 (and (not bigyear) (natnump year) (< year 100) 868 (setq year (+ year (if (< year 40) 2000 1900)))) 869 (if (eq year 0) 870 (throw 'syntax "Year value is out of range")) 871 (if (or (< month 1) (> month 12)) 872 (throw 'syntax "Month value is out of range")) 873 (if (or (< day 1) (> day (math-days-in-month year month))) 874 (throw 'syntax "Day value is out of range")) 875 (and hour 876 (progn 877 (if (or (< hour 0) (> hour 23)) 878 (throw 'syntax "Hour value is out of range")) 879 (if (or (< minute 0) (> minute 59)) 880 (throw 'syntax "Minute value is out of range")) 881 (if (or (math-negp second) (not (Math-lessp second 60))) 882 (throw 'syntax "Seconds value is out of range")))) 883 (list 'date (math-dt-to-date (append (list year month day) 884 (and hour (list hour minute second)))))) 885 886(defun math-parse-date-word (names &optional front) 887 (let ((n 1)) 888 (while (and names (not (string-match (if (equal (car names) "Sep") 889 "Sept?" 890 (regexp-quote (car names))) 891 math-pd-str))) 892 (setq names (cdr names) 893 n (1+ n))) 894 (and names 895 (or (not front) (= (match-beginning 0) 0)) 896 (progn 897 (setq math-pd-str (concat (substring math-pd-str 0 (match-beginning 0)) 898 (if front "" " ") 899 (substring math-pd-str (match-end 0)))) 900 n)))) 901 902(defun math-parse-standard-date (math-pd-str with-time) 903 (let ((case-fold-search t) 904 (okay t) num 905 (fmt calc-date-format) this next (gnext nil) 906 (year nil) (month nil) (day nil) (bigyear nil) (yearday nil) 907 (hour nil) (minute nil) (second nil) (bc-flag nil)) 908 (while (and fmt okay) 909 (setq this (car fmt) 910 fmt (setq fmt (or (cdr fmt) 911 (prog1 912 gnext 913 (setq gnext nil)))) 914 next (car fmt)) 915 (if (consp next) (setq next (car next))) 916 (or (cond ((listp this) 917 (or (not with-time) 918 (not this) 919 (setq gnext fmt 920 fmt this))) 921 ((stringp this) 922 (if (and (<= (length this) (length math-pd-str)) 923 (equal this 924 (substring math-pd-str 0 (length this)))) 925 (setq math-pd-str (substring math-pd-str (length this))))) 926 ((eq this 'X) 927 t) 928 ((memq this '(n N j J)) 929 (and (string-match "\\`[-+]?[0-9.]+\\([eE][-+]?[0-9]+\\)?" math-pd-str) 930 (setq num (math-match-substring math-pd-str 0) 931 math-pd-str (substring math-pd-str (match-end 0)) 932 num (math-date-to-dt (math-read-number num)) 933 num (math-sub num 934 (if (memq this '(n N)) 935 0 936 (if (or (eq this 'j) 937 (math-integerp num)) 938 '(bigpos 424 721 1) 939 '(float (bigpos 235 214 17) 940 -1)))) 941 hour (or (nth 3 num) hour) 942 minute (or (nth 4 num) minute) 943 second (or (nth 5 num) second) 944 year (car num) 945 month (nth 1 num) 946 day (nth 2 num)))) 947 ((eq this 'U) 948 (and (string-match "\\`[-+]?[0-9]+" math-pd-str) 949 (setq num (math-match-substring math-pd-str 0) 950 math-pd-str (substring math-pd-str (match-end 0)) 951 num (math-date-to-dt 952 (math-add 719164 953 (math-div (math-read-number num) 954 '(float 864 2)))) 955 hour (nth 3 num) 956 minute (nth 4 num) 957 second (nth 5 num) 958 year (car num) 959 month (nth 1 num) 960 day (nth 2 num)))) 961 ((memq this '(mmm Mmm MMM)) 962 (setq month (math-parse-date-word math-short-month-names t))) 963 ((memq this '(Mmmm MMMM)) 964 (setq month (math-parse-date-word math-long-month-names t))) 965 ((memq this '(www Www WWW)) 966 (math-parse-date-word math-short-weekday-names t)) 967 ((memq this '(Wwww WWWW)) 968 (math-parse-date-word math-long-weekday-names t)) 969 ((memq this '(p P)) 970 (if (string-match "\\`a" math-pd-str) 971 (setq hour (if (= hour 12) 0 hour) 972 math-pd-str (substring math-pd-str 1)) 973 (if (string-match "\\`p" math-pd-str) 974 (setq hour (if (= hour 12) 12 (% (+ hour 12) 24)) 975 math-pd-str (substring math-pd-str 1))))) 976 ((memq this '(pp PP pppp PPPP)) 977 (if (string-match "\\`am\\|a\\.m\\." math-pd-str) 978 (setq hour (if (= hour 12) 0 hour) 979 math-pd-str (substring math-pd-str (match-end 0))) 980 (if (string-match "\\`pm\\|p\\.m\\." math-pd-str) 981 (setq hour (if (= hour 12) 12 (% (+ hour 12) 24)) 982 math-pd-str (substring math-pd-str (match-end 0)))))) 983 ((memq this '(Y YY BY YYY YYYY)) 984 (and (if (memq next '(MM DD ddd hh HH mm ss SS)) 985 (if (memq this '(Y YY BYY)) 986 (string-match "\\` *[0-9][0-9]" math-pd-str) 987 (string-match "\\`[0-9][0-9][0-9][0-9]" math-pd-str)) 988 (string-match "\\`[-+]?[0-9]+" math-pd-str)) 989 (setq year (math-match-substring math-pd-str 0) 990 bigyear (or (eq this 'YYY) 991 (memq (aref math-pd-str 0) '(?\+ ?\-))) 992 math-pd-str (substring math-pd-str (match-end 0)) 993 year (math-read-number year)))) 994 ((eq this 'b) 995 t) 996 ((memq this '(aa AA aaaa AAAA)) 997 (if (string-match "\\` *\\(ad\\|a\\.d\\.\\)" math-pd-str) 998 (setq math-pd-str (substring math-pd-str (match-end 0))))) 999 ((memq this '(aaa AAA)) 1000 (if (string-match "\\` *ad *" math-pd-str) 1001 (setq math-pd-str (substring math-pd-str (match-end 0))))) 1002 ((memq this '(bb BB bbb BBB bbbb BBBB)) 1003 (if (string-match "\\` *\\(bc\\|b\\.c\\.\\)" math-pd-str) 1004 (setq math-pd-str (substring math-pd-str (match-end 0)) 1005 bc-flag t))) 1006 ((memq this '(s ss bs SS BS)) 1007 (and (if (memq next '(YY YYYY MM DD hh HH mm)) 1008 (string-match "\\` *[0-9][0-9]\\(\\.[0-9]+\\)?" math-pd-str) 1009 (string-match "\\` *[0-9][0-9]?\\(\\.[0-9]+\\)?" math-pd-str)) 1010 (setq second (math-match-substring math-pd-str 0) 1011 math-pd-str (substring math-pd-str (match-end 0)) 1012 second (math-read-number second)))) 1013 ((eq this 'C) 1014 (if (string-match "\\`:[0-9][0-9]" math-pd-str) 1015 (setq math-pd-str (substring math-pd-str 1)) 1016 t)) 1017 ((or (not (if (and (memq this '(ddd MM DD hh HH mm)) 1018 (memq next '(YY YYYY MM DD ddd 1019 hh HH mm ss SS))) 1020 (if (eq this 'ddd) 1021 (string-match "\\` *[0-9][0-9][0-9]" math-pd-str) 1022 (string-match "\\` *[0-9][0-9]" math-pd-str)) 1023 (string-match "\\` *[0-9]+" math-pd-str))) 1024 (and (setq num (string-to-number 1025 (math-match-substring math-pd-str 0)) 1026 math-pd-str (substring math-pd-str (match-end 0))) 1027 nil)) 1028 nil) 1029 ((eq this 'W) 1030 (and (>= num 0) (< num 7))) 1031 ((memq this '(d ddd bdd)) 1032 (setq yearday num)) 1033 ((memq this '(M MM BM)) 1034 (setq month num)) 1035 ((memq this '(D DD BD)) 1036 (setq day num)) 1037 ((memq this '(h hh bh H HH BH)) 1038 (setq hour num)) 1039 ((memq this '(m mm bm)) 1040 (setq minute num))) 1041 (setq okay nil))) 1042 (if yearday 1043 (if (and month day) 1044 (setq yearday nil) 1045 (setq month 1 day 1))) 1046 (if (and okay (equal math-pd-str "")) 1047 (and month day (or (not (or hour minute second)) 1048 (and hour minute)) 1049 (progn 1050 (or year (setq year (math-this-year))) 1051 (or second (setq second 0)) 1052 (if bc-flag 1053 (setq year (math-neg (math-abs year)))) 1054 (setq day (math-parse-date-validate year bigyear month day 1055 hour minute second)) 1056 (if yearday 1057 (setq day (math-add day (1- yearday)))) 1058 day))))) 1059 1060 1061(defun calcFunc-now (&optional zone) 1062 (let ((date (let ((calc-date-format nil)) 1063 (math-parse-date (current-time-string))))) 1064 (if (consp date) 1065 (if zone 1066 (math-add date (math-div (math-sub (calcFunc-tzone nil date) 1067 (calcFunc-tzone zone date)) 1068 '(float 864 2))) 1069 date) 1070 (calc-record-why "*Unable to interpret current date from system") 1071 (append (list 'calcFunc-now) (and zone (list zone)))))) 1072 1073(defun calcFunc-year (date) 1074 (car (math-date-to-dt date))) 1075 1076(defun calcFunc-month (date) 1077 (nth 1 (math-date-to-dt date))) 1078 1079(defun calcFunc-day (date) 1080 (nth 2 (math-date-to-dt date))) 1081 1082(defun calcFunc-weekday (date) 1083 (if (eq (car-safe date) 'date) 1084 (setq date (nth 1 date))) 1085 (or (math-realp date) 1086 (math-reject-arg date 'datep)) 1087 (math-mod (math-add (math-floor date) 6) 7)) 1088 1089(defun calcFunc-yearday (date) 1090 (let ((dt (math-date-to-dt date))) 1091 (math-day-number (car dt) (nth 1 dt) (nth 2 dt)))) 1092 1093(defun calcFunc-hour (date) 1094 (if (eq (car-safe date) 'hms) 1095 (nth 1 date) 1096 (or (nth 3 (math-date-to-dt date)) 0))) 1097 1098(defun calcFunc-minute (date) 1099 (if (eq (car-safe date) 'hms) 1100 (nth 2 date) 1101 (or (nth 4 (math-date-to-dt date)) 0))) 1102 1103(defun calcFunc-second (date) 1104 (if (eq (car-safe date) 'hms) 1105 (nth 3 date) 1106 (or (nth 5 (math-date-to-dt date)) 0))) 1107 1108(defun calcFunc-time (date) 1109 (let ((dt (math-date-to-dt date))) 1110 (if (nth 3 dt) 1111 (cons 'hms (nthcdr 3 dt)) 1112 (list 'hms 0 0 0)))) 1113 1114(defun calcFunc-date (date &optional month day hour minute second) 1115 (and (math-messy-integerp month) (setq month (math-trunc month))) 1116 (and month (not (integerp month)) (math-reject-arg month 'fixnump)) 1117 (and (math-messy-integerp day) (setq day (math-trunc day))) 1118 (and day (not (integerp day)) (math-reject-arg day 'fixnump)) 1119 (if (and (eq (car-safe hour) 'hms) (not minute)) 1120 (setq second (nth 3 hour) 1121 minute (nth 2 hour) 1122 hour (nth 1 hour))) 1123 (and (math-messy-integerp hour) (setq hour (math-trunc hour))) 1124 (and hour (not (integerp hour)) (math-reject-arg hour 'fixnump)) 1125 (and (math-messy-integerp minute) (setq minute (math-trunc minute))) 1126 (and minute (not (integerp minute)) (math-reject-arg minute 'fixnump)) 1127 (and (math-messy-integerp second) (setq second (math-trunc second))) 1128 (and second (not (math-realp second)) (math-reject-arg second 'realp)) 1129 (if month 1130 (progn 1131 (and (math-messy-integerp date) (setq date (math-trunc date))) 1132 (and date (not (math-integerp date)) (math-reject-arg date 'integerp)) 1133 (if day 1134 (if hour 1135 (list 'date (math-dt-to-date (list date month day hour 1136 (or minute 0) 1137 (or second 0)))) 1138 (list 'date (math-dt-to-date (list date month day)))) 1139 (list 'date (math-dt-to-date (list (math-this-year) date month))))) 1140 (if (math-realp date) 1141 (list 'date date) 1142 (if (eq (car date) 'date) 1143 (nth 1 date) 1144 (math-reject-arg date 'datep))))) 1145 1146(defun calcFunc-julian (date &optional zone) 1147 (if (math-realp date) 1148 (list 'date (if (math-integerp date) 1149 (math-sub date '(bigpos 424 721 1)) 1150 (setq date (math-sub date '(float (bigpos 235 214 17) -1))) 1151 (math-sub date (math-div (calcFunc-tzone zone date) 1152 '(float 864 2))))) 1153 (if (eq (car date) 'date) 1154 (math-add (nth 1 date) (if (math-integerp (nth 1 date)) 1155 '(bigpos 424 721 1) 1156 (math-add '(float (bigpos 235 214 17) -1) 1157 (math-div (calcFunc-tzone zone date) 1158 '(float 864 2))))) 1159 (math-reject-arg date 'datep)))) 1160 1161(defun calcFunc-unixtime (date &optional zone) 1162 (if (math-realp date) 1163 (progn 1164 (setq date (math-add 719164 (math-div date '(float 864 2)))) 1165 (list 'date (math-sub date (math-div (calcFunc-tzone zone date) 1166 '(float 864 2))))) 1167 (if (eq (car date) 'date) 1168 (math-add (nth 1 (math-date-parts (nth 1 date) 719164)) 1169 (calcFunc-tzone zone date)) 1170 (math-reject-arg date 'datep)))) 1171 1172 1173;;; Note: Longer names must appear before shorter names which are 1174;;; substrings of them. 1175(defvar math-tzone-names 1176 '(( "UTC" 0 0) 1177 ( "MEGT" -1 "MET" "METDST" ) ; Middle Europe 1178 ( "METDST" -1 -1 ) ( "MET" -1 0 ) 1179 ( "MEGZ" -1 "MEZ" "MESZ" ) ( "MEZ" -1 0 ) ( "MESZ" -1 -1 ) 1180 ( "WEGT" 0 "WET" "WETDST" ) ; Western Europe 1181 ( "WETDST" 0 -1 ) ( "WET" 0 0 ) 1182 ( "BGT" 0 "GMT" "BST" ) ( "GMT" 0 0 ) ( "BST" 0 -1 ) ; Britain 1183 ( "NGT" (float 35 -1) "NST" "NDT" ) ; Newfoundland 1184 ( "NST" (float 35 -1) 0 ) ( "NDT" (float 35 -1) -1 ) 1185 ( "AGT" 4 "AST" "ADT" ) ( "AST" 4 0 ) ( "ADT" 4 -1 ) ; Atlantic 1186 ( "EGT" 5 "EST" "EDT" ) ( "EST" 5 0 ) ( "EDT" 5 -1 ) ; Eastern 1187 ( "CGT" 6 "CST" "CDT" ) ( "CST" 6 0 ) ( "CDT" 6 -1 ) ; Central 1188 ( "MGT" 7 "MST" "MDT" ) ( "MST" 7 0 ) ( "MDT" 7 -1 ) ; Mountain 1189 ( "PGT" 8 "PST" "PDT" ) ( "PST" 8 0 ) ( "PDT" 8 -1 ) ; Pacific 1190 ( "YGT" 9 "YST" "YDT" ) ( "YST" 9 0 ) ( "YDT" 9 -1 ) ; Yukon 1191 ) 1192 "No doc yet. See calc manual for now. ") 1193 1194(defvar var-TimeZone) 1195 1196(defun calcFunc-tzone (&optional zone date) 1197 (if zone 1198 (cond ((math-realp zone) 1199 (math-round (math-mul zone 3600))) 1200 ((eq (car zone) 'hms) 1201 (math-round (math-mul (math-from-hms zone 'deg) 3600))) 1202 ((eq (car zone) '+) 1203 (math-add (calcFunc-tzone (nth 1 zone) date) 1204 (calcFunc-tzone (nth 2 zone) date))) 1205 ((eq (car zone) '-) 1206 (math-sub (calcFunc-tzone (nth 1 zone) date) 1207 (calcFunc-tzone (nth 2 zone) date))) 1208 ((eq (car zone) 'var) 1209 (let ((name (upcase (symbol-name (nth 1 zone)))) 1210 found) 1211 (if (setq found (assoc name math-tzone-names)) 1212 (calcFunc-tzone (math-add (nth 1 found) 1213 (if (integerp (nth 2 found)) 1214 (nth 2 found) 1215 (or 1216 (math-daylight-savings-adjust 1217 date (car found)) 1218 0))) 1219 date) 1220 (if (equal name "LOCAL") 1221 (calcFunc-tzone nil date) 1222 (math-reject-arg zone "*Unrecognized time zone name"))))) 1223 (t (math-reject-arg zone "*Expected a time zone"))) 1224 (if (calc-var-value 'var-TimeZone) 1225 (calcFunc-tzone (calc-var-value 'var-TimeZone) date) 1226 (let ((p math-tzone-names) 1227 (offset 0) 1228 (tz '(var error var-error))) 1229 (save-excursion 1230 (set-buffer (get-buffer-create " *Calc Temporary*")) 1231 (erase-buffer) 1232 (call-process "date" nil t) 1233 (goto-char 1) 1234 (let ((case-fold-search t)) 1235 (while (and p (not (search-forward (car (car p)) nil t))) 1236 (setq p (cdr p)))) 1237 (if (looking-at "\\([-+][0-9]?[0-9]\\)\\([0-9][0-9]\\)?\\(\\'\\|[^0-9]\\)") 1238 (setq offset (math-add 1239 (string-to-number (buffer-substring 1240 (match-beginning 1) 1241 (match-end 1))) 1242 (if (match-beginning 2) 1243 (math-div (string-to-number (buffer-substring 1244 (match-beginning 2) 1245 (match-end 2))) 1246 60) 1247 0))))) 1248 (if p 1249 (progn 1250 (setq p (car p)) 1251 ;; Try to convert to a generalized time zone. 1252 (if (integerp (nth 2 p)) 1253 (let ((gen math-tzone-names)) 1254 (while (and gen 1255 (not (equal (nth 2 (car gen)) (car p))) 1256 (not (equal (nth 3 (car gen)) (car p))) 1257 (not (equal (nth 4 (car gen)) (car p))) 1258 (not (equal (nth 5 (car gen)) (car p)))) 1259 (setq gen (cdr gen))) 1260 (and gen 1261 (setq gen (car gen)) 1262 (equal (math-daylight-savings-adjust nil (car gen)) 1263 (nth 2 p)) 1264 (setq p gen)))) 1265 (setq tz (math-add (list 'var 1266 (intern (car p)) 1267 (intern (concat "var-" (car p)))) 1268 offset)))) 1269 (kill-buffer " *Calc Temporary*") 1270 (setq var-TimeZone tz) 1271 (calc-refresh-evaltos 'var-TimeZone) 1272 (calcFunc-tzone tz date))))) 1273 1274(defvar math-daylight-savings-hook 'math-std-daylight-savings) 1275 1276(defun math-daylight-savings-adjust (date zone &optional dt) 1277 (or date (setq date (nth 1 (calcFunc-now)))) 1278 (let (bump) 1279 (if (eq (car-safe date) 'date) 1280 (setq bump 0 1281 date (nth 1 date)) 1282 (if (and date (math-realp date)) 1283 (let ((zadj (assoc zone math-tzone-names))) 1284 (if zadj (setq bump -1 1285 date (math-sub date (math-div (nth 1 zadj) 1286 '(float 24 0)))))) 1287 (math-reject-arg date 'datep))) 1288 (setq date (math-float date)) 1289 (or dt (setq dt (math-date-to-dt date))) 1290 (and math-daylight-savings-hook 1291 (funcall math-daylight-savings-hook date dt zone bump)))) 1292 1293(defun calcFunc-dsadj (date &optional zone) 1294 (if zone 1295 (or (eq (car-safe zone) 'var) 1296 (math-reject-arg zone "*Time zone variable expected")) 1297 (setq zone (or (calc-var-value 'var-TimeZone) 1298 (progn 1299 (calcFunc-tzone) 1300 (calc-var-value 'var-TimeZone))))) 1301 (setq zone (and (eq (car-safe zone) 'var) 1302 (upcase (symbol-name (nth 1 zone))))) 1303 (let ((zadj (assoc zone math-tzone-names))) 1304 (or zadj (math-reject-arg zone "*Unrecognized time zone name")) 1305 (if (integerp (nth 2 zadj)) 1306 (nth 2 zadj) 1307 (math-daylight-savings-adjust date zone)))) 1308 1309(defun calcFunc-tzconv (date z1 z2) 1310 (if (math-realp date) 1311 (nth 1 (calcFunc-tzconv (list 'date date) z1 z2)) 1312 (calcFunc-unixtime (calcFunc-unixtime date z1) z2))) 1313 1314(defun math-std-daylight-savings (date dt zone bump) 1315 "Standard North American daylight saving algorithm. 1316Before 2007, this uses `math-std-daylight-savings-old', where 1317daylight saving began on the first Sunday of April at 2 a.m., 1318and ended on the last Sunday of October at 2 a.m. 1319As of 2007, this uses `math-std-daylight-savings-new', where 1320daylight saving begins on the second Sunday of March at 2 a.m., 1321and ends on the first Sunday of November at 2 a.m." 1322 (if (< (car dt) 2007) 1323 (math-std-daylight-savings-old date dt zone bump) 1324 (math-std-daylight-savings-new date dt zone bump))) 1325 1326(defun math-std-daylight-savings-new (date dt zone bump) 1327 "Standard North American daylight saving algorithm as of 2007. 1328This implements the rules for the U.S. and Canada. 1329Daylight saving begins on the second Sunday of March at 2 a.m., 1330and ends on the first Sunday of November at 2 a.m." 1331 (cond ((< (nth 1 dt) 3) 0) 1332 ((= (nth 1 dt) 3) 1333 (let ((sunday (math-prev-weekday-in-month date dt 14 0))) 1334 (cond ((< (nth 2 dt) sunday) 0) 1335 ((= (nth 2 dt) sunday) 1336 (if (>= (nth 3 dt) (+ 3 bump)) -1 0)) 1337 (t -1)))) 1338 ((< (nth 1 dt) 11) -1) 1339 ((= (nth 1 dt) 11) 1340 (let ((sunday (math-prev-weekday-in-month date dt 7 0))) 1341 (cond ((< (nth 2 dt) sunday) -1) 1342 ((= (nth 2 dt) sunday) 1343 (if (>= (nth 3 dt) (+ 2 bump)) 0 -1)) 1344 (t 0)))) 1345 (t 0))) 1346 1347(defun math-std-daylight-savings-old (date dt zone bump) 1348 "Standard North American daylight saving algorithm before 2007. 1349This implements the rules for the U.S. and Canada. 1350Daylight saving begins on the first Sunday of April at 2 a.m., 1351and ends on the last Sunday of October at 2 a.m." 1352 (cond ((< (nth 1 dt) 4) 0) 1353 ((= (nth 1 dt) 4) 1354 (let ((sunday (math-prev-weekday-in-month date dt 7 0))) 1355 (cond ((< (nth 2 dt) sunday) 0) 1356 ((= (nth 2 dt) sunday) 1357 (if (>= (nth 3 dt) (+ 3 bump)) -1 0)) 1358 (t -1)))) 1359 ((< (nth 1 dt) 10) -1) 1360 ((= (nth 1 dt) 10) 1361 (let ((sunday (math-prev-weekday-in-month date dt 31 0))) 1362 (cond ((< (nth 2 dt) sunday) -1) 1363 ((= (nth 2 dt) sunday) 1364 (if (>= (nth 3 dt) (+ 2 bump)) 0 -1)) 1365 (t 0)))) 1366 (t 0))) 1367 1368;;; Compute the day (1-31) of the WDAY (0-6) on or preceding the given 1369;;; day of the given month. 1370(defun math-prev-weekday-in-month (date dt day wday) 1371 (or day (setq day (nth 2 dt))) 1372 (if (> day (math-days-in-month (car dt) (nth 1 dt))) 1373 (setq day (math-days-in-month (car dt) (nth 1 dt)))) 1374 (let ((zeroth (math-sub (math-floor date) (nth 2 dt)))) 1375 (math-sub (nth 1 (calcFunc-newweek (math-add zeroth day))) zeroth))) 1376 1377(defun calcFunc-pwday (date &optional day weekday) 1378 (if (eq (car-safe date) 'date) 1379 (setq date (nth 1 date))) 1380 (or (math-realp date) 1381 (math-reject-arg date 'datep)) 1382 (if (math-messy-integerp day) (setq day (math-trunc day))) 1383 (or (integerp day) (math-reject-arg day 'fixnump)) 1384 (if (= day 0) (setq day 31)) 1385 (and (or (< day 7) (> day 31)) (math-reject-arg day 'range)) 1386 (math-prev-weekday-in-month date (math-date-to-dt date) day (or weekday 0))) 1387 1388 1389(defun calcFunc-newweek (date &optional weekday) 1390 (if (eq (car-safe date) 'date) 1391 (setq date (nth 1 date))) 1392 (or (math-realp date) 1393 (math-reject-arg date 'datep)) 1394 (or weekday (setq weekday 0)) 1395 (and (math-messy-integerp weekday) (setq weekday (math-trunc weekday))) 1396 (or (integerp weekday) (math-reject-arg weekday 'fixnump)) 1397 (and (or (< weekday 0) (> weekday 6)) (math-reject-arg weekday 'range)) 1398 (setq date (math-floor date)) 1399 (list 'date (math-sub date (calcFunc-weekday (math-sub date weekday))))) 1400 1401(defun calcFunc-newmonth (date &optional day) 1402 (or day (setq day 1)) 1403 (and (math-messy-integerp day) (setq day (math-trunc day))) 1404 (or (integerp day) (math-reject-arg day 'fixnump)) 1405 (and (or (< day 0) (> day 31)) (math-reject-arg day 'range)) 1406 (let ((dt (math-date-to-dt date))) 1407 (if (or (= day 0) (> day (math-days-in-month (car dt) (nth 1 dt)))) 1408 (setq day (math-days-in-month (car dt) (nth 1 dt)))) 1409 (and (eq (car dt) 1752) (= (nth 1 dt) 9) 1410 (if (>= day 14) (setq day (- day 11)))) 1411 (list 'date (math-add (math-dt-to-date (list (car dt) (nth 1 dt) 1)) 1412 (1- day))))) 1413 1414(defun calcFunc-newyear (date &optional day) 1415 (or day (setq day 1)) 1416 (and (math-messy-integerp day) (setq day (math-trunc day))) 1417 (or (integerp day) (math-reject-arg day 'fixnump)) 1418 (let ((dt (math-date-to-dt date))) 1419 (if (and (>= day 0) (<= day 366)) 1420 (let ((max (if (eq (car dt) 1752) 355 1421 (if (math-leap-year-p (car dt)) 366 365)))) 1422 (if (or (= day 0) (> day max)) (setq day max)) 1423 (list 'date (math-add (math-dt-to-date (list (car dt) 1 1)) 1424 (1- day)))) 1425 (if (and (>= day -12) (<= day -1)) 1426 (list 'date (math-dt-to-date (list (car dt) (- day) 1))) 1427 (math-reject-arg day 'range))))) 1428 1429(defun calcFunc-incmonth (date &optional step) 1430 (or step (setq step 1)) 1431 (and (math-messy-integerp step) (setq step (math-trunc step))) 1432 (or (math-integerp step) (math-reject-arg step 'integerp)) 1433 (let* ((dt (math-date-to-dt date)) 1434 (year (car dt)) 1435 (month (math-add (1- (nth 1 dt)) step)) 1436 (extra (calcFunc-idiv month 12)) 1437 (day (nth 2 dt))) 1438 (setq month (1+ (math-sub month (math-mul extra 12))) 1439 year (math-add year extra) 1440 day (min day (math-days-in-month year month))) 1441 (and (math-posp (car dt)) (not (math-posp year)) 1442 (setq year (math-sub year 1))) ; did we go past the year zero? 1443 (and (math-negp (car dt)) (not (math-negp year)) 1444 (setq year (math-add year 1))) 1445 (list 'date (math-dt-to-date 1446 (cons year (cons month (cons day (cdr (cdr (cdr dt)))))))))) 1447 1448(defun calcFunc-incyear (date &optional step) 1449 (calcFunc-incmonth date (math-mul (or step 1) 12))) 1450 1451 1452 1453(defun calcFunc-bsub (a b) 1454 (or (eq (car-safe a) 'date) 1455 (math-reject-arg a 'datep)) 1456 (if (eq (car-safe b) 'date) 1457 (if (math-lessp (nth 1 a) (nth 1 b)) 1458 (math-neg (calcFunc-bsub b a)) 1459 (math-setup-holidays b) 1460 (let* ((da (math-to-business-day a)) 1461 (db (math-to-business-day b))) 1462 (math-add (math-sub (car da) (car db)) 1463 (if (and (cdr db) (not (cdr da))) 1 0)))) 1464 (calcFunc-badd a (math-neg b)))) 1465 1466(defvar math-holidays-cache nil) 1467(defvar math-holidays-cache-tag t) 1468(defun calcFunc-badd (a b) 1469 (if (eq (car-safe b) 'date) 1470 (if (eq (car-safe a) 'date) 1471 (math-reject-arg nil "*Invalid combination in date arithmetic") 1472 (calcFunc-badd b a)) 1473 (if (eq (car-safe a) 'date) 1474 (if (Math-realp b) 1475 (if (Math-zerop b) 1476 a 1477 (let* ((d (math-to-business-day a)) 1478 (bb (math-add (car d) 1479 (if (and (cdr d) (Math-posp b)) 1480 (math-sub b 1) b)))) 1481 (or (math-from-business-day bb) 1482 (calcFunc-badd a b)))) 1483 (if (eq (car-safe b) 'hms) 1484 (let ((hours (nth 7 math-holidays-cache))) 1485 (setq b (math-div (math-from-hms b 'deg) 24)) 1486 (if hours 1487 (setq b (math-div b (cdr hours)))) 1488 (calcFunc-badd a b)) 1489 (math-reject-arg nil "*Invalid combination in date arithmetic"))) 1490 (math-reject-arg a 'datep)))) 1491 1492(defun calcFunc-holiday (a) 1493 (if (cdr (math-to-business-day a)) 1 0)) 1494 1495;;; Compute the number of business days since Jan 1, 1 AD. 1496 1497(defun math-to-business-day (date &optional need-year) 1498 (if (eq (car-safe date) 'date) 1499 (setq date (nth 1 date))) 1500 (or (Math-realp date) 1501 (math-reject-arg date 'datep)) 1502 (let* ((day (math-floor date)) 1503 (time (math-sub date day)) 1504 (dt (math-date-to-dt day)) 1505 (delta 0) 1506 (holiday nil)) 1507 (or (not need-year) (eq (car dt) need-year) 1508 (math-reject-arg (list 'date day) "*Generated holiday has wrong year")) 1509 (math-setup-holidays date) 1510 (let ((days (car math-holidays-cache))) 1511 (while (and (setq days (cdr days)) (< (car days) day)) 1512 (setq delta (1+ delta))) 1513 (and days (= day (car days)) 1514 (setq holiday t))) 1515 (let* ((weekdays (nth 3 math-holidays-cache)) 1516 (weeks (1- (/ (+ day 6) 7))) 1517 (wkday (- day 1 (* weeks 7)))) 1518 (setq delta (+ delta (* weeks (length weekdays)))) 1519 (while (and weekdays (< (car weekdays) wkday)) 1520 (setq weekdays (cdr weekdays) 1521 delta (1+ delta))) 1522 (and weekdays (eq wkday (car weekdays)) 1523 (setq holiday t))) 1524 (let ((hours (nth 7 math-holidays-cache))) 1525 (if hours 1526 (progn 1527 (setq time (math-div (math-sub time (car hours)) (cdr hours))) 1528 (if (Math-lessp time 0) (setq time 0)) 1529 (or (Math-lessp time 1) 1530 (setq time 1531 (math-sub 1 1532 (math-div 1 (math-mul 86400 (cdr hours))))))))) 1533 (cons (math-add (math-sub day delta) time) holiday))) 1534 1535 1536;;; Compute the date a certain number of business days since Jan 1, 1 AD. 1537;;; If this returns nil, holiday table was adjusted; redo calculation. 1538 1539(defun math-from-business-day (num) 1540 (let* ((day (math-floor num)) 1541 (time (math-sub num day))) 1542 (or (integerp day) 1543 (math-reject-arg nil "*Date is outside valid range")) 1544 (math-setup-holidays) 1545 (let ((days (nth 1 math-holidays-cache)) 1546 (delta 0)) 1547 (while (and (setq days (cdr days)) (< (car days) day)) 1548 (setq delta (1+ delta))) 1549 (setq day (+ day delta))) 1550 (let* ((weekdays (nth 3 math-holidays-cache)) 1551 (bweek (- 7 (length weekdays))) 1552 (weeks (1- (/ (+ day (1- bweek)) bweek))) 1553 (wkday (- day 1 (* weeks bweek))) 1554 (w 0)) 1555 (setq day (+ day (* weeks (length weekdays)))) 1556 (while (if (memq w weekdays) 1557 (setq day (1+ day)) 1558 (> (setq wkday (1- wkday)) 0)) 1559 (setq w (1+ w))) 1560 (let ((hours (nth 7 math-holidays-cache))) 1561 (if hours 1562 (setq time (math-add (math-mul time (cdr hours)) (car hours))))) 1563 (and (not (math-setup-holidays day)) 1564 (list 'date (math-add day time)))))) 1565 1566;; The variable math-sh-year is local to math-setup-holidays 1567;; and math-setup-year-holiday, but is used by math-setup-add-holidays, 1568;; which is called by math-setup-holidays and math-setup-year-holiday. 1569(defvar math-sh-year) 1570 1571(defun math-setup-holidays (&optional date) 1572 (or (eq (calc-var-value 'var-Holidays) math-holidays-cache-tag) 1573 (let ((h (calc-var-value 'var-Holidays)) 1574 (wdnames '( (sun . 0) (mon . 1) (tue . 2) (wed . 3) 1575 (thu . 4) (fri . 5) (sat . 6) )) 1576 (days nil) (weekdays nil) (exprs nil) (limit nil) (hours nil)) 1577 (or (math-vectorp h) 1578 (math-reject-arg h "*Holidays variable must be a vector")) 1579 (while (setq h (cdr h)) 1580 (cond ((or (and (eq (car-safe (car h)) 'date) 1581 (integerp (nth 1 (car h)))) 1582 (and (eq (car-safe (car h)) 'intv) 1583 (eq (car-safe (nth 2 (car h))) 'date)) 1584 (eq (car-safe (car h)) 'vec)) 1585 (setq days (cons (car h) days))) 1586 ((and (eq (car-safe (car h)) 'var) 1587 (assq (nth 1 (car h)) wdnames)) 1588 (setq weekdays (cons (cdr (assq (nth 1 (car h)) wdnames)) 1589 weekdays))) 1590 ((and (eq (car-safe (car h)) 'intv) 1591 (eq (car-safe (nth 2 (car h))) 'hms) 1592 (eq (car-safe (nth 3 (car h))) 'hms)) 1593 (if hours 1594 (math-reject-arg 1595 (car h) "*Only one hours interval allowed in Holidays")) 1596 (setq hours (math-div (car h) '(hms 24 0 0))) 1597 (if (or (Math-lessp (nth 2 hours) 0) 1598 (Math-lessp 1 (nth 3 hours))) 1599 (math-reject-arg 1600 (car h) "*Hours interval out of range")) 1601 (setq hours (cons (nth 2 hours) 1602 (math-sub (nth 3 hours) (nth 2 hours)))) 1603 (if (Math-zerop (cdr hours)) 1604 (math-reject-arg 1605 (car h) "*Degenerate hours interval"))) 1606 ((or (and (eq (car-safe (car h)) 'intv) 1607 (Math-integerp (nth 2 (car h))) 1608 (Math-integerp (nth 3 (car h)))) 1609 (and (integerp (car h)) 1610 (> (car h) 1900) (< (car h) 2100))) 1611 (if limit 1612 (math-reject-arg 1613 (car h) "*Only one limit allowed in Holidays")) 1614 (setq limit (calcFunc-vint (car h) '(intv 3 1 2737))) 1615 (if (equal limit '(vec)) 1616 (math-reject-arg (car h) "*Limit is out of range"))) 1617 ((or (math-expr-contains (car h) '(var y var-y)) 1618 (math-expr-contains (car h) '(var m var-m))) 1619 (setq exprs (cons (car h) exprs))) 1620 (t (math-reject-arg 1621 (car h) "*Holidays must contain a vector of holidays")))) 1622 (if (= (length weekdays) 7) 1623 (math-reject-arg nil "*Too many weekend days")) 1624 (setq math-holidays-cache (list (list -1) ; 0: days list 1625 (list -1) ; 1: inverse-days list 1626 nil ; 2: exprs 1627 (sort weekdays '<) 1628 (or limit '(intv 3 1 2737)) 1629 nil ; 5: (lo.hi) expanded years 1630 (cons exprs days) 1631 hours) ; 7: business hours 1632 math-holidays-cache-tag (calc-var-value 'var-Holidays)))) 1633 (if date 1634 (let ((year (calcFunc-year date)) 1635 (limits (nth 5 math-holidays-cache)) 1636 (done nil)) 1637 (or (eq (calcFunc-in year (nth 4 math-holidays-cache)) 1) 1638 (progn 1639 (or (eq (car-safe date) 'date) (setq date (list 'date date))) 1640 (math-reject-arg date "*Date is outside valid range"))) 1641 (unwind-protect 1642 (let ((days (nth 6 math-holidays-cache))) 1643 (if days 1644 (let ((math-sh-year nil)) ; see below 1645 (setcar (nthcdr 6 math-holidays-cache) nil) 1646 (math-setup-add-holidays (cons 'vec (cdr days))) 1647 (setcar (nthcdr 2 math-holidays-cache) (car days)))) 1648 (cond ((not (nth 2 math-holidays-cache)) 1649 (setq done t) 1650 nil) 1651 ((not limits) 1652 (setcar (nthcdr 5 math-holidays-cache) (cons year year)) 1653 (math-setup-year-holidays year) 1654 (setq done t)) 1655 ((< year (car limits)) 1656 (message "Computing holidays, %d .. %d" 1657 year (1- (car limits))) 1658 (calc-set-command-flag 'clear-message) 1659 (while (< year (car limits)) 1660 (setcar limits (1- (car limits))) 1661 (math-setup-year-holidays (car limits))) 1662 (setq done t)) 1663 ((> year (cdr limits)) 1664 (message "Computing holidays, %d .. %d" 1665 (1+ (cdr limits)) year) 1666 (calc-set-command-flag 'clear-message) 1667 (while (> year (cdr limits)) 1668 (setcdr limits (1+ (cdr limits))) 1669 (math-setup-year-holidays (cdr limits))) 1670 (setq done t)) 1671 (t 1672 (setq done t) 1673 nil))) 1674 (or done (setq math-holidays-cache-tag t)))))) 1675 1676(defun math-setup-year-holidays (math-sh-year) 1677 (let ((exprs (nth 2 math-holidays-cache))) 1678 (while exprs 1679 (let* ((var-y math-sh-year) 1680 (var-m nil) 1681 (expr (math-evaluate-expr (car exprs)))) 1682 (if (math-expr-contains expr '(var m var-m)) 1683 (let ((var-m 0)) 1684 (while (<= (setq var-m (1+ var-m)) 12) 1685 (math-setup-add-holidays (math-evaluate-expr expr)))) 1686 (math-setup-add-holidays expr))) 1687 (setq exprs (cdr exprs))))) 1688 1689(defun math-setup-add-holidays (days) ; uses "math-sh-year" 1690 (cond ((eq (car-safe days) 'vec) 1691 (while (setq days (cdr days)) 1692 (math-setup-add-holidays (car days)))) 1693 ((eq (car-safe days) 'intv) 1694 (let ((day (math-ceiling (nth 2 days)))) 1695 (or (eq (calcFunc-in day days) 1) 1696 (setq day (math-add day 1))) 1697 (while (eq (calcFunc-in day days) 1) 1698 (math-setup-add-holidays day) 1699 (setq day (math-add day 1))))) 1700 ((eq (car-safe days) 'date) 1701 (math-setup-add-holidays (nth 1 days))) 1702 ((eq days 0)) 1703 ((integerp days) 1704 (let ((b (math-to-business-day days math-sh-year))) 1705 (or (cdr b) ; don't register holidays twice! 1706 (let ((prev (car math-holidays-cache)) 1707 (iprev (nth 1 math-holidays-cache))) 1708 (while (and (cdr prev) (< (nth 1 prev) days)) 1709 (setq prev (cdr prev) iprev (cdr iprev))) 1710 (setcdr prev (cons days (cdr prev))) 1711 (setcdr iprev (cons (car b) (cdr iprev))) 1712 (while (setq iprev (cdr iprev)) 1713 (setcar iprev (1- (car iprev)))))))) 1714 ((Math-realp days) 1715 (math-reject-arg (list 'date days) "*Invalid holiday value")) 1716 (t 1717 (math-reject-arg days "*Holiday formula failed to evaluate")))) 1718 1719 1720 1721 1722;;;; Error forms. 1723 1724;;; Build a standard deviation form. [X X X] 1725(defun math-make-sdev (x sigma) 1726 (if (memq (car-safe x) '(date mod sdev intv vec)) 1727 (math-reject-arg x 'realp)) 1728 (if (memq (car-safe sigma) '(date mod sdev intv vec)) 1729 (math-reject-arg sigma 'realp)) 1730 (if (or (Math-negp sigma) (memq (car-safe sigma) '(cplx polar))) 1731 (setq sigma (math-abs sigma))) 1732 (if (and (Math-zerop sigma) (Math-scalarp x)) 1733 x 1734 (list 'sdev x sigma))) 1735(defun calcFunc-sdev (x sigma) 1736 (math-make-sdev x sigma)) 1737 1738 1739 1740;;;; Modulo forms. 1741 1742(defun math-normalize-mod (a) 1743 (let ((n (math-normalize (nth 1 a))) 1744 (m (math-normalize (nth 2 a)))) 1745 (if (and (math-anglep n) (math-anglep m) (math-posp m)) 1746 (math-make-mod n m) 1747 (math-normalize (list 'calcFunc-makemod n m))))) 1748 1749;;; Build a modulo form. [N R R] 1750(defun math-make-mod (n m) 1751 (setq calc-previous-modulo m) 1752 (and n 1753 (cond ((not (Math-anglep m)) 1754 (math-reject-arg m 'anglep)) 1755 ((not (math-posp m)) 1756 (math-reject-arg m 'posp)) 1757 ((Math-anglep n) 1758 (if (or (Math-negp n) 1759 (not (Math-lessp n m))) 1760 (list 'mod (math-mod n m) m) 1761 (list 'mod n m))) 1762 ((memq (car n) '(+ - / vec neg)) 1763 (math-normalize 1764 (cons (car n) 1765 (mapcar (function (lambda (x) (math-make-mod x m))) 1766 (cdr n))))) 1767 ((and (eq (car n) '*) (Math-anglep (nth 1 n))) 1768 (math-mul (math-make-mod (nth 1 n) m) (nth 2 n))) 1769 ((memq (car n) '(* ^ var calcFunc-subscr)) 1770 (math-mul (math-make-mod 1 m) n)) 1771 (t (math-reject-arg n 'anglep))))) 1772(defun calcFunc-makemod (n m) 1773 (math-make-mod n m)) 1774 1775 1776 1777;;;; Interval forms. 1778 1779;;; Build an interval form. [X S X X] 1780(defun math-make-intv (mask lo hi) 1781 (if (memq (car-safe lo) '(cplx polar mod sdev intv vec)) 1782 (math-reject-arg lo 'realp)) 1783 (if (memq (car-safe hi) '(cplx polar mod sdev intv vec)) 1784 (math-reject-arg hi 'realp)) 1785 (or (eq (eq (car-safe lo) 'date) (eq (car-safe hi) 'date)) 1786 (math-reject-arg (if (eq (car-safe lo) 'date) hi lo) 'datep)) 1787 (if (and (or (Math-realp lo) (eq (car lo) 'date)) 1788 (or (Math-realp hi) (eq (car hi) 'date))) 1789 (let ((cmp (math-compare lo hi))) 1790 (if (= cmp 0) 1791 (if (= mask 3) 1792 lo 1793 (list 'intv mask lo hi)) 1794 (if (> cmp 0) 1795 (if (= mask 3) 1796 (list 'intv 2 lo lo) 1797 (list 'intv mask lo lo)) 1798 (list 'intv mask lo hi)))) 1799 (list 'intv mask lo hi))) 1800(defun calcFunc-intv (mask lo hi) 1801 (if (math-messy-integerp mask) (setq mask (math-trunc mask))) 1802 (or (natnump mask) (math-reject-arg mask 'fixnatnump)) 1803 (or (<= mask 3) (math-reject-arg mask 'range)) 1804 (math-make-intv mask lo hi)) 1805 1806(defun math-sort-intv (mask lo hi) 1807 (if (Math-lessp hi lo) 1808 (math-make-intv (aref [0 2 1 3] mask) hi lo) 1809 (math-make-intv mask lo hi))) 1810 1811 1812 1813 1814(defun math-combine-intervals (a am b bm c cm d dm) 1815 (let (res) 1816 (if (= (setq res (math-compare a c)) 1) 1817 (setq a c am cm) 1818 (if (= res 0) 1819 (setq am (or am cm)))) 1820 (if (= (setq res (math-compare b d)) -1) 1821 (setq b d bm dm) 1822 (if (= res 0) 1823 (setq bm (or bm dm)))) 1824 (math-make-intv (+ (if am 2 0) (if bm 1 0)) a b))) 1825 1826 1827(defun math-div-mod (a b m) ; [R R R R] (Returns nil if no solution) 1828 (and (Math-integerp a) (Math-integerp b) (Math-integerp m) 1829 (let ((u1 1) (u3 b) (v1 0) (v3 m)) 1830 (while (not (eq v3 0)) ; See Knuth sec 4.5.2, exercise 15 1831 (let* ((q (math-idivmod u3 v3)) 1832 (t1 (math-sub u1 (math-mul v1 (car q))))) 1833 (setq u1 v1 u3 v3 v1 t1 v3 (cdr q)))) 1834 (let ((q (math-idivmod a u3))) 1835 (and (eq (cdr q) 0) 1836 (math-mod (math-mul (car q) u1) m)))))) 1837 1838(defun math-mod-intv (a b) 1839 (let* ((q1 (math-floor (math-div (nth 2 a) b))) 1840 (q2 (math-floor (math-div (nth 3 a) b))) 1841 (m1 (math-sub (nth 2 a) (math-mul q1 b))) 1842 (m2 (math-sub (nth 3 a) (math-mul q2 b)))) 1843 (cond ((equal q1 q2) 1844 (math-sort-intv (nth 1 a) m1 m2)) 1845 ((and (math-equal-int (math-sub q2 q1) 1) 1846 (math-zerop m2) 1847 (memq (nth 1 a) '(0 2))) 1848 (math-make-intv (nth 1 a) m1 b)) 1849 (t 1850 (math-make-intv 2 0 b))))) 1851 1852;; The variables math-exp-str and math-exp-pos are local to 1853;; math-read-exprs in math-aent.el, but are used by 1854;; math-read-angle-brackets, which is called (indirectly) by 1855;; math-read-exprs. 1856(defvar math-exp-str) 1857(defvar math-exp-pos) 1858 1859(defun math-read-angle-brackets () 1860 (let* ((last (or (math-check-for-commas t) (length math-exp-str))) 1861 (str (substring math-exp-str math-exp-pos last)) 1862 (res 1863 (if (string-match "\\` *\\([a-zA-Z#][a-zA-Z0-9#]* *,? *\\)*:" str) 1864 (let ((str1 (substring str 0 (1- (match-end 0)))) 1865 (str2 (substring str (match-end 0))) 1866 (calc-hashes-used 0)) 1867 (setq str1 (math-read-expr (concat "[" str1 "]"))) 1868 (if (eq (car-safe str1) 'error) 1869 str1 1870 (setq str2 (math-read-expr str2)) 1871 (if (eq (car-safe str2) 'error) 1872 str2 1873 (append '(calcFunc-lambda) (cdr str1) (list str2))))) 1874 (if (string-match "#" str) 1875 (let ((calc-hashes-used 0)) 1876 (and (setq str (math-read-expr str)) 1877 (if (eq (car-safe str) 'error) 1878 str 1879 (append '(calcFunc-lambda) 1880 (calc-invent-args calc-hashes-used) 1881 (list str))))) 1882 (math-parse-date str))))) 1883 (if (stringp res) 1884 (throw 'syntax res)) 1885 (if (eq (car-safe res) 'error) 1886 (throw 'syntax (nth 2 res))) 1887 (setq math-exp-pos (1+ last)) 1888 (math-read-token) 1889 res)) 1890 1891(provide 'calc-forms) 1892 1893;;; arch-tag: a3d8f33b-9508-4043-8060-d02b8c9c750c 1894;;; calc-forms.el ends here 1895