code.delx.au - gnu-emacs/blob - lisp/calc/calc-aent.el

   1 ;; Calculator for GNU Emacs, part I [calc-aent.el]
   2 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
   3 ;; Written by Dave Gillespie, daveg@synaptics.com.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is distributed in the hope that it will be useful,
   8 ;; but WITHOUT ANY WARRANTY.  No author or distributor
   9 ;; accepts responsibility to anyone for the consequences of using it
  10 ;; or for whether it serves any particular purpose or works at all,
  11 ;; unless he says so in writing.  Refer to the GNU Emacs General Public
  12 ;; License for full details.
  13
  14 ;; Everyone is granted permission to copy, modify and redistribute
  15 ;; GNU Emacs, but only under the conditions described in the
  16 ;; GNU Emacs General Public License.   A copy of this license is
  17 ;; supposed to have been given to you along with GNU Emacs so you
  18 ;; can know your rights and responsibilities.  It should be in a
  19 ;; file named COPYING.  Among other things, the copyright notice
  20 ;; and this notice must be preserved on all copies.
  21
  22
  23
  24 ;; This file is autoloaded from calc.el.
  25 (require 'calc)
  26
  27 (require 'calc-macs)
  28 (eval-when-compile '(require calc-macs))
  29
  30 (defun calc-Need-calc-aent () nil)
  31
  32
  33 (defun calc-do-quick-calc ()
  34   (calc-check-defines)
  35   (if (eq major-mode 'calc-mode)
  36       (calc-algebraic-entry t)
  37     (let (buf shortbuf)
  38       (save-excursion
  39         (calc-create-buffer)
  40         (let* ((calc-command-flags nil)
  41                (calc-dollar-values calc-quick-prev-results)
  42                (calc-dollar-used 0)
  43                (enable-recursive-minibuffers t)
  44                (calc-language (if (memq calc-language '(nil big))
  45                                   'flat calc-language))
  46                (entry (calc-do-alg-entry "" "Quick calc: " t))
  47                (alg-exp (mapcar (function
  48                                  (lambda (x)
  49                                    (if (and (not calc-extensions-loaded)
  50                                             calc-previous-alg-entry
  51                                             (string-match
  52                                              "\\`[-0-9._+*/^() ]+\\'"
  53                                              calc-previous-alg-entry))
  54                                        (calc-normalize x)
  55                                      (calc-extensions)
  56                                      (math-evaluate-expr x))))
  57                                 entry)))
  58           (if (and (= (length alg-exp) 1)
  59                    (eq (car-safe (car alg-exp)) 'calcFunc-assign)
  60                    (= (length (car alg-exp)) 3)
  61                    (eq (car-safe (nth 1 (car alg-exp))) 'var))
  62               (progn
  63                 (calc-extensions)
  64                 (set (nth 2 (nth 1 (car alg-exp))) (nth 2 (car alg-exp)))
  65                 (calc-refresh-evaltos (nth 2 (nth 1 (car alg-exp))))
  66                 (setq alg-exp (list (nth 2 (car alg-exp))))))
  67           (setq calc-quick-prev-results alg-exp
  68                 buf (mapconcat (function (lambda (x)
  69                                            (math-format-value x 1000)))
  70                                alg-exp
  71                                " ")
  72                 shortbuf buf)
  73           (if (and (= (length alg-exp) 1)
  74                    (memq (car-safe (car alg-exp)) '(nil bigpos bigneg))
  75                    (< (length buf) 20)
  76                    (= calc-number-radix 10))
  77               (setq buf (concat buf "  ("
  78                                 (let ((calc-number-radix 16))
  79                                   (math-format-value (car alg-exp) 1000))
  80                                 ", "
  81                                 (let ((calc-number-radix 8))
  82                                   (math-format-value (car alg-exp) 1000))
  83                                 (if (and (integerp (car alg-exp))
  84                                          (> (car alg-exp) 0)
  85                                          (< (car alg-exp) 127))
  86                                     (format ", \"%c\"" (car alg-exp))
  87                                   "")
  88                                 ")")))
  89           (if (and (< (length buf) (frame-width)) (= (length entry) 1)
  90                    calc-extensions-loaded)
  91               (let ((long (concat (math-format-value (car entry) 1000)
  92                                   " =>  " buf)))
  93                 (if (<= (length long) (- (frame-width) 8))
  94                     (setq buf long))))
  95           (calc-handle-whys)
  96           (message "Result: %s" buf)))
  97       (if (eq last-command-char 10)
  98           (insert shortbuf)
  99         (setq kill-ring (cons shortbuf kill-ring))
 100         (if (> (length kill-ring) kill-ring-max)
 101             (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
 102         (setq kill-ring-yank-pointer kill-ring)))))
 103
 104 (defun calc-do-calc-eval (str separator args)
 105   (calc-check-defines)
 106   (catch 'calc-error
 107     (save-excursion
 108       (calc-create-buffer)
 109       (cond
 110        ((and (consp str) (not (symbolp (car str))))
 111         (let ((calc-language nil)
 112               (math-expr-opers math-standard-opers)
 113               (calc-internal-prec 12)
 114               (calc-word-size 32)
 115               (calc-symbolic-mode nil)
 116               (calc-matrix-mode nil)
 117               (calc-angle-mode 'deg)
 118               (calc-number-radix 10)
 119               (calc-leading-zeros nil)
 120               (calc-group-digits nil)
 121               (calc-point-char ".")
 122               (calc-frac-format '(":" nil))
 123               (calc-prefer-frac nil)
 124               (calc-hms-format "%s@ %s' %s\"")
 125               (calc-date-format '((H ":" mm C SS pp " ")
 126                                   Www " " Mmm " " D ", " YYYY))
 127               (calc-float-format '(float 0))
 128               (calc-full-float-format '(float 0))
 129               (calc-complex-format nil)
 130               (calc-matrix-just nil)
 131               (calc-full-vectors t)
 132               (calc-break-vectors nil)
 133               (calc-vector-commas ",")
 134               (calc-vector-brackets "[]")
 135               (calc-matrix-brackets '(R O))
 136               (calc-complex-mode 'cplx)
 137               (calc-infinite-mode nil)
 138               (calc-display-strings nil)
 139               (calc-simplify-mode nil)
 140               (calc-display-working-message 'lots)
 141               (strp (cdr str)))
 142           (while strp
 143             (set (car strp) (nth 1 strp))
 144             (setq strp (cdr (cdr strp))))
 145           (calc-do-calc-eval (car str) separator args)))
 146        ((eq separator 'eval)
 147         (eval str))
 148        ((eq separator 'macro)
 149         (calc-extensions)
 150         (let* ((calc-buffer (current-buffer))
 151                (calc-window (get-buffer-window calc-buffer))
 152                (save-window (selected-window)))
 153           (if calc-window
 154               (unwind-protect
 155                   (progn
 156                     (select-window calc-window)
 157                     (calc-execute-kbd-macro str nil (car args)))
 158                 (and (window-point save-window)
 159                      (select-window save-window)))
 160             (save-window-excursion
 161               (select-window (get-largest-window))
 162               (switch-to-buffer calc-buffer)
 163               (calc-execute-kbd-macro str nil (car args)))))
 164         nil)
 165        ((eq separator 'pop)
 166         (or (not (integerp str))
 167             (= str 0)
 168             (calc-pop (min str (calc-stack-size))))
 169         (calc-stack-size))
 170        ((eq separator 'top)
 171         (and (integerp str)
 172              (> str 0)
 173              (<= str (calc-stack-size))
 174              (math-format-value (calc-top-n str (car args)) 1000)))
 175        ((eq separator 'rawtop)
 176         (and (integerp str)
 177              (> str 0)
 178              (<= str (calc-stack-size))
 179              (calc-top-n str (car args))))
 180        (t
 181         (let* ((calc-command-flags nil)
 182                (calc-next-why nil)
 183                (calc-language (if (memq calc-language '(nil big))
 184                                   'flat calc-language))
 185                (calc-dollar-values (mapcar
 186                                     (function
 187                                      (lambda (x)
 188                                        (if (stringp x)
 189                                            (progn
 190                                              (setq x (math-read-exprs x))
 191                                              (if (eq (car-safe x)
 192                                                      'error)
 193                                                  (throw 'calc-error
 194                                                         (calc-eval-error
 195                                                          (cdr x)))
 196                                                (car x)))
 197                                          x)))
 198                                     args))
 199                (calc-dollar-used 0)
 200                (res (if (stringp str)
 201                         (math-read-exprs str)
 202                       (list str)))
 203                buf)
 204           (if (eq (car res) 'error)
 205               (calc-eval-error (cdr res))
 206             (setq res (mapcar 'calc-normalize res))
 207             (and (memq 'clear-message calc-command-flags)
 208                  (message ""))
 209             (cond ((eq separator 'pred)
 210                    (calc-extensions)
 211                    (if (= (length res) 1)
 212                        (math-is-true (car res))
 213                      (calc-eval-error '(0 "Single value expected"))))
 214                   ((eq separator 'raw)
 215                    (if (= (length res) 1)
 216                        (car res)
 217                      (calc-eval-error '(0 "Single value expected"))))
 218                   ((eq separator 'list)
 219                    res)
 220                   ((memq separator '(num rawnum))
 221                    (if (= (length res) 1)
 222                        (if (math-constp (car res))
 223                            (if (eq separator 'num)
 224                                (math-format-value (car res) 1000)
 225                              (car res))
 226                          (calc-eval-error
 227                           (list 0
 228                                 (if calc-next-why
 229                                     (calc-explain-why (car calc-next-why))
 230                                   "Number expected"))))
 231                      (calc-eval-error '(0 "Single value expected"))))
 232                   ((eq separator 'push)
 233                    (calc-push-list res)
 234                    nil)
 235                   (t (while res
 236                        (setq buf (concat buf
 237                                          (and buf (or separator ", "))
 238                                          (math-format-value (car res) 1000))
 239                              res (cdr res)))
 240                      buf)))))))))
 241
 242 (defun calc-eval-error (msg)
 243   (if (and (boundp 'calc-eval-error)
 244            calc-eval-error)
 245       (if (eq calc-eval-error 'string)
 246           (nth 1 msg)
 247         (error "%s" (nth 1 msg)))
 248     msg))
 249
 250
 251 ;;;; Reading an expression in algebraic form.
 252
 253 (defun calc-auto-algebraic-entry (&optional prefix)
 254   (interactive "P")
 255   (calc-algebraic-entry prefix t))
 256
 257 (defun calc-algebraic-entry (&optional prefix auto)
 258   (interactive "P")
 259   (calc-wrapper
 260    (let ((calc-language (if prefix nil calc-language))
 261          (math-expr-opers (if prefix math-standard-opers math-expr-opers)))
 262      (calc-alg-entry (and auto (char-to-string last-command-char))))))
 263
 264 (defun calc-alg-entry (&optional initial prompt)
 265   (let* ((sel-mode nil)
 266          (calc-dollar-values (mapcar 'calc-get-stack-element
 267                                      (nthcdr calc-stack-top calc-stack)))
 268          (calc-dollar-used 0)
 269          (calc-plain-entry t)
 270          (alg-exp (calc-do-alg-entry initial prompt t)))
 271     (if (stringp alg-exp)
 272         (progn
 273           (calc-extensions)
 274           (calc-alg-edit alg-exp))
 275       (let* ((calc-simplify-mode (if (eq last-command-char ?\C-j)
 276                                      'none
 277                                    calc-simplify-mode))
 278              (nvals (mapcar 'calc-normalize alg-exp)))
 279         (while alg-exp
 280           (calc-record (if calc-extensions-loaded (car alg-exp) (car nvals))
 281                        "alg'")
 282           (calc-pop-push-record-list calc-dollar-used
 283                                      (and (not (equal (car alg-exp)
 284                                                       (car nvals)))
 285                                           calc-extensions-loaded
 286                                           "")
 287                                      (list (car nvals)))
 288           (setq alg-exp (cdr alg-exp)
 289                 nvals (cdr nvals)
 290                 calc-dollar-used 0)))
 291       (calc-handle-whys))))
 292
 293 (defun calc-do-alg-entry (&optional initial prompt no-normalize)
 294   (let* ((calc-buffer (current-buffer))
 295          (blink-paren-function 'calcAlg-blink-matching-open)
 296          (alg-exp 'error))
 297     (if (boundp 'calc-alg-ent-map)
 298         ()
 299       (setq calc-alg-ent-map (copy-keymap minibuffer-local-map))
 300       (define-key calc-alg-ent-map "'" 'calcAlg-previous)
 301       (define-key calc-alg-ent-map "`" 'calcAlg-edit)
 302       (define-key calc-alg-ent-map "\C-m" 'calcAlg-enter)
 303       (define-key calc-alg-ent-map "\C-j" 'calcAlg-enter)
 304       (or calc-emacs-type-19
 305           (let ((i 33))
 306             (setq calc-alg-ent-esc-map (copy-sequence esc-map))
 307             (while (< i 127)
 308               (aset calc-alg-ent-esc-map i 'calcAlg-escape)
 309               (setq i (1+ i))))))
 310     (or calc-emacs-type-19
 311         (define-key calc-alg-ent-map "\e" nil))
 312     (if (eq calc-algebraic-mode 'total)
 313         (define-key calc-alg-ent-map "\e" calc-alg-ent-esc-map)
 314       (define-key calc-alg-ent-map "\ep" 'calcAlg-plus-minus)
 315       (define-key calc-alg-ent-map "\em" 'calcAlg-mod)
 316       (define-key calc-alg-ent-map "\e=" 'calcAlg-equals)
 317       (define-key calc-alg-ent-map "\e\r" 'calcAlg-equals)
 318       (define-key calc-alg-ent-map "\e%" 'self-insert-command))
 319     (setq calc-aborted-prefix nil)
 320     (let ((buf (read-from-minibuffer (or prompt "Algebraic: ")
 321                                      (or initial "")
 322                                      calc-alg-ent-map nil)))
 323       (if (eq alg-exp 'error)
 324           (if (eq (car-safe (setq alg-exp (math-read-exprs buf))) 'error)
 325               (setq alg-exp nil)))
 326       (setq calc-aborted-prefix "alg'")
 327       (or no-normalize
 328           (and alg-exp (setq alg-exp (mapcar 'calc-normalize alg-exp))))
 329       alg-exp)))
 330
 331 (defun calcAlg-plus-minus ()
 332   (interactive)
 333   (if (calc-minibuffer-contains ".* \\'")
 334       (insert "+/- ")
 335     (insert " +/- ")))
 336
 337 (defun calcAlg-mod ()
 338   (interactive)
 339   (if (not (calc-minibuffer-contains ".* \\'"))
 340       (insert " "))
 341   (if (calc-minibuffer-contains ".* mod +\\'")
 342       (if calc-previous-modulo
 343           (insert (math-format-flat-expr calc-previous-modulo 0))
 344         (beep))
 345     (insert "mod ")))
 346
 347 (defun calcAlg-previous ()
 348   (interactive)
 349   (if (calc-minibuffer-contains "\\`\\'")
 350       (if calc-previous-alg-entry
 351           (insert calc-previous-alg-entry)
 352         (beep))
 353     (insert "'")))
 354
 355 (defun calcAlg-equals ()
 356   (interactive)
 357   (unwind-protect
 358       (calcAlg-enter)
 359     (if (consp alg-exp)
 360         (progn (setq prefix-arg (length alg-exp))
 361                (calc-unread-command ?=)))))
 362
 363 (defun calcAlg-escape ()
 364   (interactive)
 365   (calc-unread-command)
 366   (save-excursion
 367     (calc-select-buffer)
 368     (use-local-map calc-mode-map))
 369   (calcAlg-enter))
 370
 371 (defun calcAlg-edit ()
 372   (interactive)
 373   (if (or (not calc-plain-entry)
 374           (calc-minibuffer-contains
 375            "\\`\\([^\"]*\"[^\"]*\"\\)*[^\"]*\"[^\"]*\\'"))
 376       (insert "`")
 377     (setq alg-exp (minibuffer-contents))
 378     (and (> (length alg-exp) 0) (setq calc-previous-alg-entry alg-exp))
 379     (exit-minibuffer)))
 380 (setq calc-plain-entry nil)
 381
 382 (defun calcAlg-enter ()
 383   (interactive)
 384   (let* ((str (minibuffer-contents))
 385          (exp (and (> (length str) 0)
 386                    (save-excursion
 387                      (set-buffer calc-buffer)
 388                      (math-read-exprs str)))))
 389     (if (eq (car-safe exp) 'error)
 390         (progn
 391           (goto-char (minibuffer-prompt-end))
 392           (forward-char (nth 1 exp))
 393           (beep)
 394           (calc-temp-minibuffer-message
 395            (concat " [" (or (nth 2 exp) "Error") "]"))
 396           (calc-clear-unread-commands))
 397       (setq alg-exp (if (calc-minibuffer-contains "\\` *\\[ *\\'")
 398                         '((incomplete vec))
 399                       exp))
 400       (and (> (length str) 0) (setq calc-previous-alg-entry str))
 401       (exit-minibuffer))))
 402
 403 (defun calcAlg-blink-matching-open ()
 404   (let ((oldpos (point))
 405         (blinkpos nil))
 406     (save-excursion
 407       (condition-case ()
 408           (setq blinkpos (scan-sexps oldpos -1))
 409         (error nil)))
 410     (if (and blinkpos
 411              (> oldpos (1+ (point-min)))
 412              (or (and (= (char-after (1- oldpos)) ?\))
 413                       (= (char-after blinkpos) ?\[))
 414                  (and (= (char-after (1- oldpos)) ?\])
 415                       (= (char-after blinkpos) ?\()))
 416              (save-excursion
 417                (goto-char blinkpos)
 418                (looking-at ".+\\(\\.\\.\\|\\\\dots\\|\\\\ldots\\)")))
 419         (let ((saved (aref (syntax-table) (char-after blinkpos))))
 420           (unwind-protect
 421               (progn
 422                 (aset (syntax-table) (char-after blinkpos)
 423                       (+ (logand saved 255)
 424                          (lsh (char-after (1- oldpos)) 8)))
 425                 (blink-matching-open))
 426             (aset (syntax-table) (char-after blinkpos) saved)))
 427       (blink-matching-open))))
 428
 429
 430 (defun calc-alg-digit-entry ()
 431   (calc-alg-entry
 432    (cond ((eq last-command-char ?e)
 433           (if (> calc-number-radix 14) (format "%d.^" calc-number-radix) "1e"))
 434          ((eq last-command-char ?#) (format "%d#" calc-number-radix))
 435          ((eq last-command-char ?_) "-")
 436          ((eq last-command-char ?@) "0@ ")
 437          (t (char-to-string last-command-char)))))
 438
 439 (defun calcDigit-algebraic ()
 440   (interactive)
 441   (if (calc-minibuffer-contains ".*[@oh] *[^'m ]+[^'m]*\\'")
 442       (calcDigit-key)
 443     (setq calc-digit-value (minibuffer-contents))
 444     (exit-minibuffer)))
 445
 446 (defun calcDigit-edit ()
 447   (interactive)
 448   (calc-unread-command)
 449   (setq calc-digit-value (minibuffer-contents))
 450   (exit-minibuffer))
 451
 452
 453 ;;; Algebraic expression parsing.   [Public]
 454
 455 (defun math-read-exprs (exp-str)
 456   (let ((exp-pos 0)
 457         (exp-old-pos 0)
 458         (exp-keep-spaces nil)
 459         exp-token exp-data)
 460     (if calc-language-input-filter
 461         (setq exp-str (funcall calc-language-input-filter exp-str)))
 462     (while (setq exp-token (string-match "\\.\\.\\([^.]\\|.[^.]\\)" exp-str))
 463       (setq exp-str (concat (substring exp-str 0 exp-token) "\\dots"
 464                             (substring exp-str (+ exp-token 2)))))
 465     (math-build-parse-table)
 466     (math-read-token)
 467     (let ((val (catch 'syntax (math-read-expr-list))))
 468       (if (stringp val)
 469           (list 'error exp-old-pos val)
 470         (if (equal exp-token 'end)
 471             val
 472           (list 'error exp-old-pos "Syntax error"))))))
 473
 474 (defun math-read-expr-list ()
 475   (let* ((exp-keep-spaces nil)
 476          (val (list (math-read-expr-level 0)))
 477          (last val))
 478     (while (equal exp-data ",")
 479       (math-read-token)
 480       (let ((rest (list (math-read-expr-level 0))))
 481         (setcdr last rest)
 482         (setq last rest)))
 483     val))
 484
 485 (setq calc-user-parse-table nil)
 486 (setq calc-last-main-parse-table nil)
 487 (setq calc-last-lang-parse-table nil)
 488 (setq calc-user-tokens nil)
 489 (setq calc-user-token-chars nil)
 490
 491 (defun math-build-parse-table ()
 492   (let ((mtab (cdr (assq nil calc-user-parse-tables)))
 493         (ltab (cdr (assq calc-language calc-user-parse-tables))))
 494     (or (and (eq mtab calc-last-main-parse-table)
 495              (eq ltab calc-last-lang-parse-table))
 496         (let ((p (append mtab ltab))
 497               (toks nil))
 498           (setq calc-user-parse-table p)
 499           (setq calc-user-token-chars nil)
 500           (while p
 501             (math-find-user-tokens (car (car p)))
 502             (setq p (cdr p)))
 503           (setq calc-user-tokens (mapconcat 'identity
 504                                             (sort (mapcar 'car toks)
 505                                                   (function (lambda (x y)
 506                                                               (> (length x)
 507                                                                  (length y)))))
 508                                             "\\|")
 509                 calc-last-main-parse-table mtab
 510                 calc-last-lang-parse-table ltab)))))
 511
 512 (defun math-find-user-tokens (p)   ; uses "toks"
 513   (while p
 514     (cond ((and (stringp (car p))
 515                 (or (> (length (car p)) 1) (equal (car p) "$")
 516                     (equal (car p) "\""))
 517                 (string-match "[^a-zA-Z0-9]" (car p)))
 518            (let ((s (regexp-quote (car p))))
 519              (if (string-match "\\`[a-zA-Z0-9]" s)
 520                  (setq s (concat "\\<" s)))
 521              (if (string-match "[a-zA-Z0-9]\\'" s)
 522                  (setq s (concat s "\\>")))
 523              (or (assoc s toks)
 524                  (progn
 525                    (setq toks (cons (list s) toks))
 526                    (or (memq (aref (car p) 0) calc-user-token-chars)
 527                        (setq calc-user-token-chars
 528                              (cons (aref (car p) 0)
 529                                    calc-user-token-chars)))))))
 530           ((consp (car p))
 531            (math-find-user-tokens (nth 1 (car p)))
 532            (or (eq (car (car p)) '\?)
 533                (math-find-user-tokens (nth 2 (car p))))))
 534     (setq p (cdr p))))
 535
 536 (defun math-read-token ()
 537   (if (>= exp-pos (length exp-str))
 538       (setq exp-old-pos exp-pos
 539             exp-token 'end
 540             exp-data "\000")
 541     (let ((ch (aref exp-str exp-pos)))
 542       (setq exp-old-pos exp-pos)
 543       (cond ((memq ch '(32 10 9))
 544              (setq exp-pos (1+ exp-pos))
 545              (if exp-keep-spaces
 546                  (setq exp-token 'space
 547                        exp-data " ")
 548                (math-read-token)))
 549             ((and (memq ch calc-user-token-chars)
 550                   (let ((case-fold-search nil))
 551                     (eq (string-match calc-user-tokens exp-str exp-pos)
 552                         exp-pos)))
 553              (setq exp-token 'punc
 554                    exp-data (math-match-substring exp-str 0)
 555                    exp-pos (match-end 0)))
 556             ((or (and (>= ch ?a) (<= ch ?z))
 557                  (and (>= ch ?A) (<= ch ?Z)))
 558              (string-match (if (memq calc-language '(c fortran pascal maple))
 559                                "[a-zA-Z0-9_#]*"
 560                              "[a-zA-Z0-9'#]*")
 561                            exp-str exp-pos)
 562              (setq exp-token 'symbol
 563                    exp-pos (match-end 0)
 564                    exp-data (math-restore-dashes
 565                              (math-match-substring exp-str 0)))
 566              (if (eq calc-language 'eqn)
 567                  (let ((code (assoc exp-data math-eqn-ignore-words)))
 568                    (cond ((null code))
 569                          ((null (cdr code))
 570                           (math-read-token))
 571                          ((consp (nth 1 code))
 572                           (math-read-token)
 573                           (if (assoc exp-data (cdr code))
 574                               (setq exp-data (format "%s %s"
 575                                                      (car code) exp-data))))
 576                          ((eq (nth 1 code) 'punc)
 577                           (setq exp-token 'punc
 578                                 exp-data (nth 2 code)))
 579                          (t
 580                           (math-read-token)
 581                           (math-read-token))))))
 582             ((or (and (>= ch ?0) (<= ch ?9))
 583                  (and (eq ch '?\.)
 584                       (eq (string-match "\\.[0-9]" exp-str exp-pos) exp-pos))
 585                  (and (eq ch '?_)
 586                       (eq (string-match "_\\.?[0-9]" exp-str exp-pos) exp-pos)
 587                       (or (eq exp-pos 0)
 588                           (and (memq calc-language '(nil flat big unform
 589                                                          tex eqn))
 590                                (eq (string-match "[^])}\"a-zA-Z0-9'$]_"
 591                                                  exp-str (1- exp-pos))
 592                                    (1- exp-pos))))))
 593              (or (and (eq calc-language 'c)
 594                       (string-match "0[xX][0-9a-fA-F]+" exp-str exp-pos))
 595                  (string-match "_?\\([0-9]+.?0*@ *\\)?\\([0-9]+.?0*' *\\)?\\(0*\\([2-9]\\|1[0-4]\\)\\(#\\|\\^\\^\\)[0-9a-dA-D.]+[eE][-+_]?[0-9]+\\|0*\\([2-9]\\|[0-2][0-9]\\|3[0-6]\\)\\(#\\|\\^\\^\\)[0-9a-zA-Z:.]+\\|[0-9]+:[0-9:]+\\|[0-9.]+\\([eE][-+_]?[0-9]+\\)?\"?\\)?" exp-str exp-pos))
 596              (setq exp-token 'number
 597                    exp-data (math-match-substring exp-str 0)
 598                    exp-pos (match-end 0)))
 599             ((eq ch ?\$)
 600              (if (and (eq calc-language 'pascal)
 601                       (eq (string-match
 602                            "\\(\\$[0-9a-fA-F]+\\)\\($\\|[^0-9a-zA-Z]\\)"
 603                            exp-str exp-pos)
 604                           exp-pos))
 605                  (setq exp-token 'number
 606                        exp-data (math-match-substring exp-str 1)
 607                        exp-pos (match-end 1))
 608                (if (eq (string-match "\\$\\([1-9][0-9]*\\)" exp-str exp-pos)
 609                        exp-pos)
 610                    (setq exp-data (- (string-to-int (math-match-substring
 611                                                      exp-str 1))))
 612                  (string-match "\\$+" exp-str exp-pos)
 613                  (setq exp-data (- (match-end 0) (match-beginning 0))))
 614                (setq exp-token 'dollar
 615                      exp-pos (match-end 0))))
 616             ((eq ch ?\#)
 617              (if (eq (string-match "#\\([1-9][0-9]*\\)" exp-str exp-pos)
 618                      exp-pos)
 619                  (setq exp-data (string-to-int
 620                                  (math-match-substring exp-str 1))
 621                        exp-pos (match-end 0))
 622                (setq exp-data 1
 623                      exp-pos (1+ exp-pos)))
 624              (setq exp-token 'hash))
 625             ((eq (string-match "~=\\|<=\\|>=\\|<>\\|/=\\|\\+/-\\|\\\\dots\\|\\\\ldots\\|\\*\\*\\|<<\\|>>\\|==\\|!=\\|&&&\\||||\\|!!!\\|&&\\|||\\|!!\\|:=\\|::\\|=>"
 626                                exp-str exp-pos)
 627                  exp-pos)
 628              (setq exp-token 'punc
 629                    exp-data (math-match-substring exp-str 0)
 630                    exp-pos (match-end 0)))
 631             ((and (eq ch ?\")
 632                   (string-match "\\(\"\\([^\"\\]\\|\\\\.\\)*\\)\\(\"\\|\\'\\)" exp-str exp-pos))
 633              (if (eq calc-language 'eqn)
 634                  (progn
 635                    (setq exp-str (copy-sequence exp-str))
 636                    (aset exp-str (match-beginning 1) ?\{)
 637                    (if (< (match-end 1) (length exp-str))
 638                        (aset exp-str (match-end 1) ?\}))
 639                    (math-read-token))
 640                (setq exp-token 'string
 641                      exp-data (math-match-substring exp-str 1)
 642                      exp-pos (match-end 0))))
 643             ((and (= ch ?\\) (eq calc-language 'tex)
 644                   (< exp-pos (1- (length exp-str))))
 645              (or (string-match "\\\\hbox *{\\([a-zA-Z0-9]+\\)}" exp-str exp-pos)
 646                  (string-match "\\(\\\\\\([a-zA-Z]+\\|[^a-zA-Z]\\)\\)" exp-str exp-pos))
 647              (setq exp-token 'symbol
 648                    exp-pos (match-end 0)
 649                    exp-data (math-restore-dashes
 650                              (math-match-substring exp-str 1)))
 651              (let ((code (assoc exp-data math-tex-ignore-words)))
 652                (cond ((null code))
 653                      ((null (cdr code))
 654                       (math-read-token))
 655                      ((eq (nth 1 code) 'punc)
 656                       (setq exp-token 'punc
 657                             exp-data (nth 2 code)))
 658                      ((and (eq (nth 1 code) 'mat)
 659                            (string-match " *{" exp-str exp-pos))
 660                       (setq exp-pos (match-end 0)
 661                             exp-token 'punc
 662                             exp-data "[")
 663                       (let ((right (string-match "}" exp-str exp-pos)))
 664                         (and right
 665                              (setq exp-str (copy-sequence exp-str))
 666                              (aset exp-str right ?\])))))))
 667             ((and (= ch ?\.) (eq calc-language 'fortran)
 668                   (eq (string-match "\\.[a-zA-Z][a-zA-Z][a-zA-Z]?\\."
 669                                     exp-str exp-pos) exp-pos))
 670              (setq exp-token 'punc
 671                    exp-data (upcase (math-match-substring exp-str 0))
 672                    exp-pos (match-end 0)))
 673             ((and (eq calc-language 'math)
 674                   (eq (string-match "\\[\\[\\|->\\|:>" exp-str exp-pos)
 675                       exp-pos))
 676              (setq exp-token 'punc
 677                    exp-data (math-match-substring exp-str 0)
 678                    exp-pos (match-end 0)))
 679             ((and (eq calc-language 'eqn)
 680                   (eq (string-match "->\\|<-\\|+-\\|\\\\dots\\|~\\|\\^"
 681                                     exp-str exp-pos)
 682                       exp-pos))
 683              (setq exp-token 'punc
 684                    exp-data (math-match-substring exp-str 0)
 685                    exp-pos (match-end 0))
 686              (and (eq (string-match "\\\\dots\\." exp-str exp-pos) exp-pos)
 687                   (setq exp-pos (match-end 0)))
 688              (if (memq (aref exp-data 0) '(?~ ?^))
 689                  (math-read-token)))
 690             ((eq (string-match "%%.*$" exp-str exp-pos) exp-pos)
 691              (setq exp-pos (match-end 0))
 692              (math-read-token))
 693             (t
 694              (if (and (eq ch ?\{) (memq calc-language '(tex eqn)))
 695                  (setq ch ?\())
 696              (if (and (eq ch ?\}) (memq calc-language '(tex eqn)))
 697                  (setq ch ?\)))
 698              (if (and (eq ch ?\&) (eq calc-language 'tex))
 699                  (setq ch ?\,))
 700              (setq exp-token 'punc
 701                    exp-data (char-to-string ch)
 702                    exp-pos (1+ exp-pos)))))))
 703
 704
 705 (defun math-read-expr-level (exp-prec &optional exp-term)
 706   (let* ((x (math-read-factor)) (first t) op op2)
 707     (while (and (or (and calc-user-parse-table
 708                          (setq op (calc-check-user-syntax x exp-prec))
 709                          (setq x op
 710                                op '("2x" ident 999999 -1)))
 711                     (and (setq op (assoc exp-data math-expr-opers))
 712                          (/= (nth 2 op) -1)
 713                          (or (and (setq op2 (assoc
 714                                              exp-data
 715                                              (cdr (memq op math-expr-opers))))
 716                                   (eq (= (nth 3 op) -1)
 717                                       (/= (nth 3 op2) -1))
 718                                   (eq (= (nth 3 op2) -1)
 719                                       (not (math-factor-after)))
 720                                   (setq op op2))
 721                              t))
 722                     (and (or (eq (nth 2 op) -1)
 723                              (memq exp-token '(symbol number dollar hash))
 724                              (equal exp-data "(")
 725                              (and (equal exp-data "[")
 726                                   (not (eq calc-language 'math))
 727                                   (not (and exp-keep-spaces
 728                                             (eq (car-safe x) 'vec)))))
 729                          (or (not (setq op (assoc exp-data math-expr-opers)))
 730                              (/= (nth 2 op) -1))
 731                          (or (not calc-user-parse-table)
 732                              (not (eq exp-token 'symbol))
 733                              (let ((p calc-user-parse-table))
 734                                (while (and p
 735                                            (or (not (integerp
 736                                                      (car (car (car p)))))
 737                                                (not (equal
 738                                                      (nth 1 (car (car p)))
 739                                                      exp-data))))
 740                                  (setq p (cdr p)))
 741                                (not p)))
 742                          (setq op (assoc "2x" math-expr-opers))))
 743                 (not (and exp-term (equal exp-data exp-term)))
 744                 (>= (nth 2 op) exp-prec))
 745       (if (not (equal (car op) "2x"))
 746           (math-read-token))
 747       (and (memq (nth 1 op) '(sdev mod))
 748            (calc-extensions))
 749       (setq x (cond ((consp (nth 1 op))
 750                      (funcall (car (nth 1 op)) x op))
 751                     ((eq (nth 3 op) -1)
 752                      (if (eq (nth 1 op) 'ident)
 753                          x
 754                        (if (eq (nth 1 op) 'closing)
 755                            (if (eq (nth 2 op) exp-prec)
 756                                (progn
 757                                  (setq exp-prec 1000)
 758                                  x)
 759                              (throw 'syntax "Mismatched delimiters"))
 760                          (list (nth 1 op) x))))
 761                     ((and (not first)
 762                           (memq (nth 1 op) math-alg-inequalities)
 763                           (memq (car-safe x) math-alg-inequalities))
 764                      (calc-extensions)
 765                      (math-composite-inequalities x op))
 766                     (t (list (nth 1 op)
 767                              x
 768                              (math-read-expr-level (nth 3 op) exp-term))))
 769             first nil))
 770     x))
 771
 772 (defun calc-check-user-syntax (&optional x prec)
 773   (let ((p calc-user-parse-table)
 774         (matches nil)
 775         match rule)
 776     (while (and p
 777                 (or (not (progn
 778                            (setq rule (car (car p)))
 779                            (if x
 780                                (and (integerp (car rule))
 781                                     (>= (car rule) prec)
 782                                     (equal exp-data
 783                                            (car (setq rule (cdr rule)))))
 784                              (equal exp-data (car rule)))))
 785                     (let ((save-exp-pos exp-pos)
 786                           (save-exp-old-pos exp-old-pos)
 787                           (save-exp-token exp-token)
 788                           (save-exp-data exp-data))
 789                       (or (not (listp
 790                                 (setq matches (calc-match-user-syntax rule))))
 791                           (let ((args (progn
 792                                         (calc-extensions)
 793                                         calc-arg-values))
 794                                 (conds nil)
 795                                 temp)
 796                             (if x
 797                                 (setq matches (cons x matches)))
 798                             (setq match (cdr (car p)))
 799                             (while (and (eq (car-safe match)
 800                                             'calcFunc-condition)
 801                                         (= (length match) 3))
 802                               (setq conds (append (math-flatten-lands
 803                                                    (nth 2 match))
 804                                                   conds)
 805                                     match (nth 1 match)))
 806                             (while (and conds match)
 807                               (calc-extensions)
 808                               (cond ((eq (car-safe (car conds))
 809                                          'calcFunc-let)
 810                                      (setq temp (car conds))
 811                                      (or (= (length temp) 3)
 812                                          (and (= (length temp) 2)
 813                                               (eq (car-safe (nth 1 temp))
 814                                                   'calcFunc-assign)
 815                                               (= (length (nth 1 temp)) 3)
 816                                               (setq temp (nth 1 temp)))
 817                                          (setq match nil))
 818                                      (setq matches (cons
 819                                                     (math-normalize
 820                                                      (math-multi-subst
 821                                                       (nth 2 temp)
 822                                                       args matches))
 823                                                     matches)
 824                                            args (cons (nth 1 temp)
 825                                                       args)))
 826                                     ((and (eq (car-safe (car conds))
 827                                               'calcFunc-matches)
 828                                           (= (length (car conds)) 3))
 829                                      (setq temp (calcFunc-vmatches
 830                                                  (math-multi-subst
 831                                                   (nth 1 (car conds))
 832                                                   args matches)
 833                                                  (nth 2 (car conds))))
 834                                      (if (eq temp 0)
 835                                          (setq match nil)
 836                                        (while (setq temp (cdr temp))
 837                                          (setq matches (cons (nth 2 (car temp))
 838                                                              matches)
 839                                                args (cons (nth 1 (car temp))
 840                                                           args)))))
 841                                     (t
 842                                      (or (math-is-true (math-simplify
 843                                                         (math-multi-subst
 844                                                          (car conds)
 845                                                          args matches)))
 846                                          (setq match nil))))
 847                               (setq conds (cdr conds)))
 848                             (if match
 849                                 (not (setq match (math-multi-subst
 850                                                   match args matches)))
 851                               (setq exp-old-pos save-exp-old-pos
 852                                     exp-token save-exp-token
 853                                     exp-data save-exp-data
 854                                     exp-pos save-exp-pos)))))))
 855       (setq p (cdr p)))
 856     (and p match)))
 857
 858 (defun calc-match-user-syntax (p &optional term)
 859   (let ((matches nil)
 860         (save-exp-pos exp-pos)
 861         (save-exp-old-pos exp-old-pos)
 862         (save-exp-token exp-token)
 863         (save-exp-data exp-data))
 864     (while (and p
 865                 (cond ((stringp (car p))
 866                        (and (equal exp-data (car p))
 867                             (progn
 868                               (math-read-token)
 869                               t)))
 870                       ((integerp (car p))
 871                        (and (setq m (catch 'syntax
 872                                       (math-read-expr-level
 873                                        (car p)
 874                                        (if (cdr p)
 875                                            (if (consp (nth 1 p))
 876                                                (car (nth 1 (nth 1 p)))
 877                                              (nth 1 p))
 878                                          term))))
 879                             (not (stringp m))
 880                             (setq matches (nconc matches (list m)))))
 881                       ((eq (car (car p)) '\?)
 882                        (setq m (calc-match-user-syntax (nth 1 (car p))))
 883                        (or (nth 2 (car p))
 884                            (setq matches
 885                                  (nconc matches
 886                                         (list
 887                                          (cons 'vec (and (listp m) m))))))
 888                        (or (listp m) (not (nth 2 (car p)))
 889                            (not (eq (aref (car (nth 2 (car p))) 0) ?\$))
 890                            (eq exp-token 'end)))
 891                       (t
 892                        (setq m (calc-match-user-syntax (nth 1 (car p))
 893                                                        (car (nth 2 (car p)))))
 894                        (if (listp m)
 895                            (let ((vec (cons 'vec m))
 896                                  opos mm)
 897                              (while (and (listp
 898                                           (setq opos exp-pos
 899                                                 mm (calc-match-user-syntax
 900                                                     (or (nth 2 (car p))
 901                                                         (nth 1 (car p)))
 902                                                     (car (nth 2 (car p))))))
 903                                          (> exp-pos opos))
 904                                (setq vec (nconc vec mm)))
 905                              (setq matches (nconc matches (list vec))))
 906                          (and (eq (car (car p)) '*)
 907                               (setq matches (nconc matches (list '(vec)))))))))
 908       (setq p (cdr p)))
 909     (if p
 910         (setq exp-pos save-exp-pos
 911               exp-old-pos save-exp-old-pos
 912               exp-token save-exp-token
 913               exp-data save-exp-data
 914               matches "Failed"))
 915     matches))
 916
 917 (defconst math-alg-inequalities
 918   '(calcFunc-lt calcFunc-gt calcFunc-leq calcFunc-geq
 919                 calcFunc-eq calcFunc-neq))
 920
 921 (defun math-remove-dashes (x)
 922   (if (string-match "\\`\\(.*\\)-\\(.*\\)\\'" x)
 923       (math-remove-dashes
 924        (concat (math-match-substring x 1) "#" (math-match-substring x 2)))
 925     x))
 926
 927 (defun math-restore-dashes (x)
 928   (if (string-match "\\`\\(.*\\)[#_]\\(.*\\)\\'" x)
 929       (math-restore-dashes
 930        (concat (math-match-substring x 1) "-" (math-match-substring x 2)))
 931     x))
 932
 933 (defun math-read-if (cond op)
 934   (let ((then (math-read-expr-level 0)))
 935     (or (equal exp-data ":")
 936         (throw 'syntax "Expected ':'"))
 937     (math-read-token)
 938     (list 'calcFunc-if cond then (math-read-expr-level (nth 3 op)))))
 939
 940 (defun math-factor-after ()
 941   (let ((exp-pos exp-pos)
 942         exp-old-pos exp-token exp-data)
 943     (math-read-token)
 944     (or (memq exp-token '(number symbol dollar hash string))
 945         (and (assoc exp-data '(("-") ("+") ("!") ("|") ("/")))
 946              (assoc (concat "u" exp-data) math-expr-opers))
 947         (eq (nth 2 (assoc exp-data math-expr-opers)) -1)
 948         (assoc exp-data '(("(") ("[") ("{"))))))
 949
 950 (defun math-read-factor ()
 951   (let (op)
 952     (cond ((eq exp-token 'number)
 953            (let ((num (math-read-number exp-data)))
 954              (if (not num)
 955                  (progn
 956                    (setq exp-old-pos exp-pos)
 957                    (throw 'syntax "Bad format")))
 958              (math-read-token)
 959              (if (and math-read-expr-quotes
 960                       (consp num))
 961                  (list 'quote num)
 962                num)))
 963           ((and calc-user-parse-table
 964                 (setq op (calc-check-user-syntax)))
 965            op)
 966           ((or (equal exp-data "-")
 967                (equal exp-data "+")
 968                (equal exp-data "!")
 969                (equal exp-data "|")
 970                (equal exp-data "/"))
 971            (setq exp-data (concat "u" exp-data))
 972            (math-read-factor))
 973           ((and (setq op (assoc exp-data math-expr-opers))
 974                 (eq (nth 2 op) -1))
 975            (if (consp (nth 1 op))
 976                (funcall (car (nth 1 op)) op)
 977              (math-read-token)
 978              (let ((val (math-read-expr-level (nth 3 op))))
 979                (cond ((eq (nth 1 op) 'ident)
 980                       val)
 981                      ((and (Math-numberp val)
 982                            (equal (car op) "u-"))
 983                       (math-neg val))
 984                      (t (list (nth 1 op) val))))))
 985           ((eq exp-token 'symbol)
 986            (let ((sym (intern exp-data)))
 987              (math-read-token)
 988              (if (equal exp-data calc-function-open)
 989                  (let ((f (assq sym math-expr-function-mapping)))
 990                    (math-read-token)
 991                    (if (consp (cdr f))
 992                        (funcall (car (cdr f)) f sym)
 993                      (let ((args (if (or (equal exp-data calc-function-close)
 994                                          (eq exp-token 'end))
 995                                      nil
 996                                    (math-read-expr-list))))
 997                        (if (not (or (equal exp-data calc-function-close)
 998                                     (eq exp-token 'end)))
 999                            (throw 'syntax "Expected `)'"))
1000                        (math-read-token)
1001                        (if (and (eq calc-language 'fortran) args
1002                                 (calc-extensions)
1003                                 (let ((calc-matrix-mode 'scalar))
1004                                   (math-known-matrixp
1005                                    (list 'var sym
1006                                          (intern
1007                                           (concat "var-"
1008                                                   (symbol-name sym)))))))
1009                            (math-parse-fortran-subscr sym args)
1010                          (if f
1011                              (setq sym (cdr f))
1012                            (and (= (aref (symbol-name sym) 0) ?\\)
1013                                 (< (prefix-numeric-value calc-language-option)
1014                                    0)
1015                                 (setq sym (intern (substring (symbol-name sym)
1016                                                              1))))
1017                            (or (string-match "-" (symbol-name sym))
1018                                (setq sym (intern
1019                                           (concat "calcFunc-"
1020                                                   (symbol-name sym))))))
1021                          (cons sym args)))))
1022                (if math-read-expr-quotes
1023                    sym
1024                  (let ((val (list 'var
1025                                   (intern (math-remove-dashes
1026                                            (symbol-name sym)))
1027                                   (if (string-match "-" (symbol-name sym))
1028                                       sym
1029                                     (intern (concat "var-"
1030                                                     (symbol-name sym)))))))
1031                    (let ((v (assq (nth 1 val) math-expr-variable-mapping)))
1032                      (and v (setq val (if (consp (cdr v))
1033                                           (funcall (car (cdr v)) v val)
1034                                         (list 'var
1035                                               (intern
1036                                                (substring (symbol-name (cdr v))
1037                                                           4))
1038                                               (cdr v))))))
1039                    (while (and (memq calc-language '(c pascal maple))
1040                                (equal exp-data "["))
1041                      (math-read-token)
1042                      (setq val (append (list 'calcFunc-subscr val)
1043                                        (math-read-expr-list)))
1044                      (if (equal exp-data "]")
1045                          (math-read-token)
1046                        (throw 'syntax "Expected ']'")))
1047                    val)))))
1048           ((eq exp-token 'dollar)
1049            (let ((abs (if (> exp-data 0) exp-data (- exp-data))))
1050              (if (>= (length calc-dollar-values) abs)
1051                  (let ((num exp-data))
1052                    (math-read-token)
1053                    (setq calc-dollar-used (max calc-dollar-used num))
1054                    (math-check-complete (nth (1- abs) calc-dollar-values)))
1055                (throw 'syntax (if calc-dollar-values
1056                                   "Too many $'s"
1057                                 "$'s not allowed in this context")))))
1058           ((eq exp-token 'hash)
1059            (or calc-hashes-used
1060                (throw 'syntax "#'s not allowed in this context"))
1061            (calc-extensions)
1062            (if (<= exp-data (length calc-arg-values))
1063                (let ((num exp-data))
1064                  (math-read-token)
1065                  (setq calc-hashes-used (max calc-hashes-used num))
1066                  (nth (1- num) calc-arg-values))
1067              (throw 'syntax "Too many # arguments")))
1068           ((equal exp-data "(")
1069            (let* ((exp (let ((exp-keep-spaces nil))
1070                          (math-read-token)
1071                          (if (or (equal exp-data "\\dots")
1072                                  (equal exp-data "\\ldots"))
1073                              '(neg (var inf var-inf))
1074                            (math-read-expr-level 0)))))
1075              (let ((exp-keep-spaces nil))
1076                (cond
1077                 ((equal exp-data ",")
1078                  (progn
1079                    (math-read-token)
1080                    (let ((exp2 (math-read-expr-level 0)))
1081                      (setq exp
1082                            (if (and exp2 (Math-realp exp) (Math-realp exp2))
1083                                (math-normalize (list 'cplx exp exp2))
1084                              (list '+ exp (list '* exp2 '(var i var-i))))))))
1085                 ((equal exp-data ";")
1086                  (progn
1087                    (math-read-token)
1088                    (let ((exp2 (math-read-expr-level 0)))
1089                      (setq exp (if (and exp2 (Math-realp exp)
1090                                         (Math-anglep exp2))
1091                                    (math-normalize (list 'polar exp exp2))
1092                                  (calc-extensions)
1093                                  (list '* exp
1094                                        (list 'calcFunc-exp
1095                                              (list '*
1096                                                    (math-to-radians-2 exp2)
1097                                                    '(var i var-i)))))))))
1098                 ((or (equal exp-data "\\dots")
1099                      (equal exp-data "\\ldots"))
1100                  (progn
1101                    (math-read-token)
1102                    (let ((exp2 (if (or (equal exp-data ")")
1103                                        (equal exp-data "]")
1104                                        (eq exp-token 'end))
1105                                    '(var inf var-inf)
1106                                  (math-read-expr-level 0))))
1107                      (setq exp
1108                            (list 'intv
1109                                  (if (equal exp-data ")") 0 1)
1110                                  exp
1111                                  exp2)))))))
1112              (if (not (or (equal exp-data ")")
1113                           (and (equal exp-data "]") (eq (car-safe exp) 'intv))
1114                           (eq exp-token 'end)))
1115                  (throw 'syntax "Expected `)'"))
1116              (math-read-token)
1117              exp))
1118           ((eq exp-token 'string)
1119            (calc-extensions)
1120            (math-read-string))
1121           ((equal exp-data "[")
1122            (calc-extensions)
1123            (math-read-brackets t "]"))
1124           ((equal exp-data "{")
1125            (calc-extensions)
1126            (math-read-brackets nil "}"))
1127           ((equal exp-data "<")
1128            (calc-extensions)
1129            (math-read-angle-brackets))
1130           (t (throw 'syntax "Expected a number")))))
1131
1132 ;;; calc-aent.el ends here