lisp/calc/calc-mode.el

   1 ;;; calc-mode.el --- calculator modes for Calc
   2
   3 ;; Copyright (C) 1990-1993, 2001-2018 Free Software Foundation, Inc.
   4
   5 ;; Author: David Gillespie <daveg@synaptics.com>
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
  21
  22 ;;; Commentary:
  23
  24 ;;; Code:
  25
  26 ;; This file is autoloaded from calc-ext.el.
  27
  28 (require 'calc-ext)
  29 (require 'calc-macs)
  30
  31 ;; Declare functions which are defined elsewhere.
  32 (declare-function calc-embedded-save-original-modes "calc-embed" ())
  33
  34
  35 (defun calc-line-numbering (n)
  36   (interactive "P")
  37   (calc-wrapper
  38    (message (if (calc-change-mode 'calc-line-numbering n t t)
  39                 "Displaying stack level numbers"
  40               "Hiding stack level numbers"))))
  41
  42 (defun calc-line-breaking (n)
  43   (interactive "P")
  44   (calc-wrapper
  45    (setq n (if n
  46                (and (> (setq n (prefix-numeric-value n)) 0)
  47                     (or (< n 5)
  48                         n))
  49              (not calc-line-breaking)))
  50    (if (calc-change-mode 'calc-line-breaking n t)
  51        (if (integerp calc-line-breaking)
  52            (message "Breaking lines longer than %d characters" n)
  53          (message "Breaking long lines in Stack display"))
  54      (message "Not breaking long lines in Stack display"))))
  55
  56
  57 (defun calc-left-justify (n)
  58   (interactive "P")
  59   (calc-wrapper
  60    (and n (setq n (prefix-numeric-value n)))
  61    (calc-change-mode '(calc-display-just calc-display-origin)
  62                      (list nil n) t)
  63    (if n
  64        (message "Displaying stack entries indented by %d" n)
  65      (message "Displaying stack entries left-justified"))))
  66
  67 (defun calc-center-justify (n)
  68   (interactive "P")
  69   (calc-wrapper
  70    (and n (setq n (prefix-numeric-value n)))
  71    (calc-change-mode '(calc-display-just calc-display-origin)
  72                      (list 'center n) t)
  73    (if n
  74        (message "Displaying stack entries centered on column %d" n)
  75      (message "Displaying stack entries centered in window"))))
  76
  77 (defun calc-right-justify (n)
  78   (interactive "P")
  79   (calc-wrapper
  80    (and n (setq n (prefix-numeric-value n)))
  81    (calc-change-mode '(calc-display-just calc-display-origin)
  82                      (list 'right n) t)
  83    (if n
  84        (message "Displaying stack entries right-justified to column %d" n)
  85      (message "Displaying stack entries right-justified in window"))))
  86
  87 (defun calc-left-label (s)
  88   (interactive "sLefthand label: ")
  89   (calc-wrapper
  90    (or (equal s "")
  91        (setq s (concat s " ")))
  92    (calc-change-mode 'calc-left-label s t)))
  93
  94 (defun calc-right-label (s)
  95   (interactive "sRighthand label: ")
  96   (calc-wrapper
  97    (or (equal s "")
  98        (setq s (concat " " s)))
  99    (calc-change-mode 'calc-right-label s t)))
 100
 101 (defun calc-auto-why (n)
 102   (interactive "P")
 103   (calc-wrapper
 104    (if n
 105        (progn
 106          (setq n (prefix-numeric-value n))
 107          (if (<= n 0) (setq n nil)
 108            (if (> n 1) (setq n t))))
 109      (setq n (and (not (eq calc-auto-why t)) (if calc-auto-why t 1))))
 110    (calc-change-mode 'calc-auto-why n nil)
 111    (cond ((null n)
 112           (message "User must press `w' to explain unsimplified results"))
 113          ((eq n t)
 114           (message "Automatically doing `w' to explain unsimplified results"))
 115          (t
 116           (message "Automatically doing `w' only for unusual messages")))))
 117
 118 (defun calc-group-digits (n)
 119   (interactive "P")
 120   (calc-wrapper
 121    (if n
 122        (progn
 123          (setq n (prefix-numeric-value n))
 124          (cond ((or (> n 0) (< n -1)))
 125                ((= n -1)
 126                 (setq n nil))
 127                (t
 128                 (setq n calc-group-digits))))
 129      (setq n (not calc-group-digits)))
 130    (calc-change-mode 'calc-group-digits n t)
 131    (cond ((null n)
 132           (message "Grouping is off"))
 133          ((integerp n)
 134           (message "Grouping every %d digits" (math-abs n)))
 135          (t
 136           (message "Grouping is on")))))
 137
 138 (defun calc-group-char (ch)
 139   (interactive "cGrouping character: ")
 140   (calc-wrapper
 141    (or (>= ch 32)
 142        (error "Control characters not allowed for grouping"))
 143    (if (= ch ?\\)
 144        (setq ch "\\,")
 145      (setq ch (char-to-string ch)))
 146    (calc-change-mode 'calc-group-char ch calc-group-digits)
 147    (message "Digit grouping character is \"%s\"" ch)))
 148
 149 (defun calc-point-char (ch)
 150   (interactive "cCharacter to use as decimal point: ")
 151   (calc-wrapper
 152    (or (>= ch 32)
 153        (error "Control characters not allowed as decimal point"))
 154    (calc-change-mode 'calc-point-char (char-to-string ch) t)
 155    (message "Decimal point character is \"%c\"" ch)))
 156
 157 (defun calc-normal-notation (n)
 158   (interactive "P")
 159   (calc-wrapper
 160    (calc-change-mode 'calc-float-format
 161                      (let* ((val (if n (prefix-numeric-value n) 0))
 162                             (mode (/ (+ val 5000) 10000)))
 163                        (if (or (< val -5000) (> mode 3))
 164                            (error "Prefix out of range"))
 165                        (setq n (list (aref [float sci eng fix] mode)
 166                                      (- (% (+ val 5000) 10000) 5000))))
 167                      t)
 168    (if (eq (nth 1 n) 0)
 169        (message "Displaying floating-point numbers normally")
 170      (if (> (nth 1 n) 0)
 171          (message
 172           "Displaying floating-point numbers with %d significant digits"
 173           (nth 1 n))
 174        (message "Displaying floating-point numbers with (precision%d)"
 175                 (nth 1 n))))))
 176
 177 (defun calc-fix-notation (n)
 178   (interactive "NDigits after decimal point: ")
 179   (calc-wrapper
 180    (calc-change-mode 'calc-float-format
 181                      (setq n (list 'fix (if n (prefix-numeric-value n) 0)))
 182                      t)
 183    (message "Displaying floats with %d digits after decimal"
 184             (math-abs (nth 1 n)))))
 185
 186 (defun calc-sci-notation (n)
 187   (interactive "P")
 188   (calc-wrapper
 189    (calc-change-mode 'calc-float-format
 190                      (setq n (list 'sci (if n (prefix-numeric-value n) 0)))
 191                      t)
 192    (if (eq (nth 1 n) 0)
 193        (message "Displaying floats in scientific notation")
 194      (if (> (nth 1 n) 0)
 195          (message "Displaying scientific notation with %d significant digits"
 196                   (nth 1 n))
 197        (message "Displaying scientific notation with (precision%d)"
 198                 (nth 1 n))))))
 199
 200 (defun calc-eng-notation (n)
 201   (interactive "P")
 202   (calc-wrapper
 203    (calc-change-mode 'calc-float-format
 204                      (setq n (list 'eng (if n (prefix-numeric-value n) 0)))
 205                      t)
 206    (if (eq (nth 1 n) 0)
 207        (message "Displaying floats in engineering notation")
 208      (if (> (nth 1 n) 0)
 209          (message "Displaying engineering notation with %d significant digits"
 210                   (nth 1 n))
 211        (message "Displaying engineering notation with (precision%d)"
 212                 (nth 1 n))))))
 213
 214
 215 (defun calc-truncate-stack (n &optional rel)
 216   (interactive "P")
 217   (calc-wrapper
 218    (let ((oldtop calc-stack-top)
 219          (newtop calc-stack-top))
 220      (calc-record-undo (list 'set 'saved-stack-top calc-stack-top))
 221      (let ((calc-stack-top 0)
 222            (nn (prefix-numeric-value n)))
 223        (setq newtop
 224              (if n
 225                  (progn
 226                    (if rel
 227                        (setq nn (+ oldtop nn))
 228                      (if (< nn 0)
 229                          (setq nn (+ nn (calc-stack-size)))
 230                        (setq nn (1+ nn))))
 231                    (if (< nn 1)
 232                        1
 233                      (if (> nn (calc-stack-size))
 234                          (calc-stack-size)
 235                        nn)))
 236                (max 1 (calc-locate-cursor-element (point)))))
 237        (if (= newtop oldtop)
 238            ()
 239          (calc-pop-stack 1 oldtop t)
 240          (calc-push-list '(top-of-stack) newtop)
 241          (if calc-line-numbering
 242              (calc-refresh))))
 243      (calc-record-undo (list 'set 'saved-stack-top 0))
 244      (setq calc-stack-top newtop))))
 245
 246 (defun calc-truncate-up (n)
 247   (interactive "p")
 248   (calc-truncate-stack n t))
 249
 250 (defun calc-truncate-down (n)
 251   (interactive "p")
 252   (calc-truncate-stack (- n) t))
 253
 254 (defun calc-display-raw (arg)
 255   (interactive "P")
 256   (calc-wrapper
 257    (setq calc-display-raw (if calc-display-raw nil (if arg 0 t)))
 258    (calc-do-refresh)
 259    (if calc-display-raw
 260        (message "%s" "Press d ' again to cancel \"raw\" display mode"))))
 261
 262
 263
 264
 265 ;;; Mode commands.
 266
 267 (defun calc-save-modes ()
 268   (interactive)
 269   (calc-wrapper
 270    (let (pos
 271          (vals (mapcar (function (lambda (v) (symbol-value (car v))))
 272                        calc-mode-var-list)))
 273      (unless calc-settings-file
 274        (error "No `calc-settings-file' specified"))
 275      (set-buffer (find-file-noselect (substitute-in-file-name
 276                                       calc-settings-file)))
 277      (goto-char (point-min))
 278      (if (and (search-forward ";;; Mode settings stored by Calc" nil t)
 279               (progn
 280                 (beginning-of-line)
 281                 (setq pos (point))
 282                 (search-forward "\n;;; End of mode settings" nil t)))
 283          (progn
 284            (beginning-of-line)
 285            (forward-line 1)
 286            (delete-region pos (point)))
 287        (goto-char (point-max))
 288        (insert "\n\n")
 289        (forward-char -1))
 290      (insert ";;; Mode settings stored by Calc on " (current-time-string) "\n")
 291      (let ((list calc-mode-var-list))
 292        (while list
 293          (let* ((v (car (car list)))
 294                 (def (nth 1 (car list)))
 295                 (val (car vals)))
 296            (or (equal val def)
 297                (progn
 298                  (insert "(setq " (symbol-name v) " ")
 299                  (if (and (or (listp val)
 300                               (symbolp val))
 301                           (not (memq val '(nil t))))
 302                      (insert "'"))
 303                  (insert (prin1-to-string val) ")\n"))))
 304          (setq list (cdr list)
 305                vals (cdr vals))))
 306      (run-hooks 'calc-mode-save-hook)
 307      (insert ";;; End of mode settings\n")
 308      (save-buffer)
 309      (if calc-embedded-info
 310          (calc-embedded-save-original-modes)))))
 311
 312 (defun calc-settings-file-name (name &optional arg)
 313   (interactive
 314    (list (read-file-name (format "Settings file name (normally %s): "
 315                                  (abbreviate-file-name calc-settings-file)))
 316          current-prefix-arg))
 317   (calc-wrapper
 318    (setq arg (if arg (prefix-numeric-value arg) 0))
 319    (if (string-equal (file-name-nondirectory name) "")
 320        (message "Calc settings file is \"%s\"" calc-settings-file)
 321      (if (< (math-abs arg) 2)
 322          (let ((list calc-mode-var-list))
 323            (while list
 324              (set (car (car list)) (nth 1 (car list)))
 325              (setq list (cdr list)))))
 326      (setq calc-settings-file name)
 327      (or (and
 328           calc-settings-file
 329           (equal user-init-file calc-settings-file)
 330           (> arg 0))
 331          (< arg 0)
 332          (load name t)
 333          (message "New file")))))
 334
 335 (defun math-get-modes-vec ()
 336   (list 'vec
 337         calc-internal-prec
 338         calc-word-size
 339         (calc-stack-size)
 340         calc-number-radix
 341         (+ (if (<= (nth 1 calc-float-format) 0)
 342                (+ calc-internal-prec (nth 1 calc-float-format))
 343              (nth 1 calc-float-format))
 344            (cdr (assq (car calc-float-format)
 345                       '((float . 0) (sci . 10000)
 346                         (eng . 20000) (fix . 30000)))))
 347         (cond ((eq calc-angle-mode 'rad) 2)
 348               ((eq calc-angle-mode 'hms) 3)
 349               (t 1))
 350         (if calc-symbolic-mode 1 0)
 351         (if calc-prefer-frac 1 0)
 352         (if (eq calc-complex-mode 'polar) 1 0)
 353         (cond ((eq calc-matrix-mode 'scalar) 0)
 354               ((eq calc-matrix-mode 'matrix) -2)
 355               ((eq calc-matrix-mode 'sqmatrix) -3)
 356               (calc-matrix-mode)
 357               (t -1))
 358         (cond ((eq calc-simplify-mode 'none) -1)
 359               ((eq calc-simplify-mode 'num) 0)
 360               ((eq calc-simplify-mode 'binary) 2)
 361               ((eq calc-simplify-mode 'alg) 3)
 362               ((eq calc-simplify-mode 'ext) 4)
 363               ((eq calc-simplify-mode 'units) 5)
 364               (t 1))
 365         (cond ((eq calc-infinite-mode 1) 0)
 366               (calc-infinite-mode 1)
 367               (t -1))))
 368
 369 (defun calc-get-modes (n)
 370   (interactive "P")
 371   (calc-wrapper
 372    (let ((modes (math-get-modes-vec)))
 373      (calc-enter-result 0 "mode"
 374                         (if n
 375                             (if (and (>= (setq n (prefix-numeric-value n)) 1)
 376                                      (< n (length modes)))
 377                                 (nth n modes)
 378                               (error "Prefix out of range"))
 379                           modes)))))
 380
 381 (defun calc-shift-prefix (arg)
 382   (interactive "P")
 383   (calc-wrapper
 384    (setq calc-shift-prefix (if arg
 385                                (> (prefix-numeric-value arg) 0)
 386                              (not calc-shift-prefix)))
 387    (calc-init-prefixes)
 388    (message (if calc-shift-prefix
 389                 "Prefix keys are now case-insensitive"
 390               "Prefix keys must be unshifted (except V, Z)"))))
 391
 392 (defun calc-mode-record-mode (n)
 393   (interactive "P")
 394   (calc-wrapper
 395    (calc-change-mode 'calc-mode-save-mode
 396                      (cond ((null n)
 397                             (cond ((not calc-embedded-info)
 398                                    (if (eq calc-mode-save-mode 'save)
 399                                        'local 'save))
 400                                   ((eq calc-mode-save-mode 'local)  'edit)
 401                                   ((eq calc-mode-save-mode 'edit)   'perm)
 402                                   ((eq calc-mode-save-mode 'perm)   'global)
 403                                   ((eq calc-mode-save-mode 'global) 'save)
 404                                   ((eq calc-mode-save-mode 'save)   nil)
 405                                   ((eq calc-mode-save-mode nil)     'local)))
 406                            ((= (setq n (prefix-numeric-value n)) 0) nil)
 407                            ((= n 2) 'edit)
 408                            ((= n 3) 'perm)
 409                            ((= n 4) 'global)
 410                            ((= n 5) 'save)
 411                            (t 'local)))
 412    (message "%s"
 413             (cond ((and (eq calc-mode-save-mode 'local) calc-embedded-info)
 414                    "Recording mode changes with [calc-mode: ...]")
 415                   ((eq calc-mode-save-mode 'edit)
 416                    "Recording mode changes with [calc-edit-mode: ...]")
 417                   ((eq calc-mode-save-mode 'perm)
 418                    "Recording mode changes with [calc-perm-mode: ...]")
 419                   ((eq calc-mode-save-mode 'global)
 420                    "Recording mode changes with [calc-global-mode: ...]")
 421                   ((eq calc-mode-save-mode 'save)
 422                    (format "Recording mode changes in \"%s\""
 423                            calc-settings-file))
 424                   (t
 425                    "Not recording mode changes permanently")))))
 426
 427 (defun calc-total-algebraic-mode (flag)
 428   (interactive "P")
 429   (calc-wrapper
 430    (if (eq calc-algebraic-mode 'total)
 431        (calc-algebraic-mode nil)
 432      (calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
 433                        '(total nil))
 434      (use-local-map calc-alg-map)
 435      (message
 436       "All keys begin algebraic entry; use Meta (ESC) for Calc keys"))))
 437
 438 (defun calc-algebraic-mode (flag)
 439   (interactive "P")
 440   (calc-wrapper
 441    (if flag
 442        (calc-change-mode '(calc-algebraic-mode
 443                            calc-incomplete-algebraic-mode)
 444                          (list nil (not calc-incomplete-algebraic-mode)))
 445      (calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
 446                        (list (not calc-algebraic-mode) nil)))
 447    (use-local-map calc-mode-map)
 448    (message "%s" (if calc-algebraic-mode
 449                      "Numeric keys and ( and [ begin algebraic entry"
 450                    (if calc-incomplete-algebraic-mode
 451                        "Only ( and [ begin algebraic entry"
 452                      "No keys except ' and $ begin algebraic entry")))))
 453
 454 (defun calc-symbolic-mode (n)
 455   (interactive "P")
 456   (calc-wrapper
 457
 458    (message (if (calc-change-mode 'calc-symbolic-mode n nil t)
 459                 "Inexact computations like sqrt(2) are deferred"
 460               "Numerical computations are always done immediately"))))
 461
 462 (defun calc-infinite-mode (n)
 463   (interactive "P")
 464   (calc-wrapper
 465    (if (eq n 0)
 466        (progn
 467          (calc-change-mode 'calc-infinite-mode 1)
 468          (message "Computations like 1 / 0 produce \"inf\""))
 469      (message (if (calc-change-mode 'calc-infinite-mode n nil t)
 470                   "Computations like 1 / 0 produce \"uinf\""
 471                 "Computations like 1 / 0 are left unsimplified")))))
 472
 473 (defun calc-matrix-mode (arg)
 474   (interactive "P")
 475   (calc-wrapper
 476    (calc-change-mode 'calc-matrix-mode
 477                      (cond ((eq arg 0) 'scalar)
 478                            ((< (prefix-numeric-value arg) 1)
 479                             (and (< (prefix-numeric-value arg) -1) 'matrix))
 480                            (arg
 481                             (if (consp arg) 'sqmatrix
 482                               (prefix-numeric-value arg)))
 483                            ((eq calc-matrix-mode 'matrix) 'scalar)
 484                            ((eq calc-matrix-mode 'scalar) nil)
 485                            (t 'matrix)))
 486    (if (integerp calc-matrix-mode)
 487        (message "Variables are assumed to be %dx%d matrices"
 488                 calc-matrix-mode calc-matrix-mode)
 489      (message (if (eq calc-matrix-mode 'matrix)
 490                   "Variables are assumed to be matrices"
 491                 (if (eq calc-matrix-mode 'sqmatrix)
 492                     "Variables are assumed to be square matrices"
 493                   (if calc-matrix-mode
 494                       "Variables are assumed to be scalars (non-matrices)"
 495                     "Variables are not assumed to be matrix or scalar")))))))
 496
 497 (defun calc-set-simplify-mode (mode arg msg)
 498   (calc-change-mode 'calc-simplify-mode
 499                     (cond
 500                      (arg mode)
 501                      ((eq calc-simplify-mode mode)
 502                       'alg)
 503                      (t mode)))
 504   (message "%s" (if (eq calc-simplify-mode mode)
 505                msg
 506              "Algebraic simplification occurs by default")))
 507
 508 (defun calc-no-simplify-mode (arg)
 509   (interactive "P")
 510   (calc-wrapper
 511    (calc-set-simplify-mode 'none arg
 512                            "Simplification is disabled")))
 513
 514 (defun calc-num-simplify-mode (arg)
 515   (interactive "P")
 516   (calc-wrapper
 517    (calc-set-simplify-mode 'num arg
 518                            "Basic simplifications apply only if arguments are numeric")))
 519
 520 (defun calc-default-simplify-mode (arg)
 521   (interactive "P")
 522   (cond ((or (not arg) (= arg 3))
 523          (calc-wrapper
 524           (calc-set-simplify-mode
 525            'alg nil "Algebraic simplification occurs by default")))
 526          ((= arg 1)
 527          (calc-wrapper
 528           (calc-set-simplify-mode
 529            nil nil "Only basic simplifications occur by default")))
 530         ((= arg 0) (calc-num-simplify-mode 1))
 531         ((< arg 0) (calc-no-simplify-mode 1))
 532         ((= arg 2) (calc-bin-simplify-mode 1))
 533         ((= arg 4) (calc-ext-simplify-mode 1))
 534         ((= arg 5) (calc-units-simplify-mode 1))
 535         (t (error "Prefix argument out of range"))))
 536
 537 (defun calc-bin-simplify-mode (arg)
 538   (interactive "P")
 539   (calc-wrapper
 540    (calc-set-simplify-mode 'binary arg
 541                            (format "Binary simplification occurs by default (word size=%d)"
 542                                    calc-word-size))))
 543
 544 (defun calc-basic-simplify-mode (arg)
 545   (interactive "P")
 546   (calc-wrapper
 547    (calc-set-simplify-mode nil arg
 548                            "Only basic simplifications occur by default")))
 549
 550 (defun calc-alg-simplify-mode (arg)
 551   (interactive "P")
 552   (calc-wrapper
 553    (calc-set-simplify-mode 'alg arg
 554                            "Algebraic simplification occurs by default")))
 555
 556 (defun calc-ext-simplify-mode (arg)
 557   (interactive "P")
 558   (calc-wrapper
 559    (calc-set-simplify-mode 'ext arg
 560                            "Extended algebraic simplification occurs by default")))
 561
 562 (defun calc-units-simplify-mode (arg)
 563   (interactive "P")
 564   (calc-wrapper
 565    (calc-set-simplify-mode 'units arg
 566                            "Units simplification occurs by default")))
 567
 568 (defun calc-auto-recompute (arg)
 569   (interactive "P")
 570   (calc-wrapper
 571    (calc-change-mode 'calc-auto-recompute arg nil t)
 572    (calc-refresh-evaltos)
 573    (message (if calc-auto-recompute
 574                 "Automatically recomputing `=>' forms when necessary"
 575               "Not recomputing `=>' forms automatically"))))
 576
 577 (defun calc-working (n)
 578   (interactive "P")
 579   (calc-wrapper
 580    (cond ((consp n)
 581           (calc-pop-push-record 0 "work"
 582                                 (cond ((eq calc-display-working-message t) 1)
 583                                       (calc-display-working-message 2)
 584                                       (t 0))))
 585          ((eq n 2) (calc-change-mode 'calc-display-working-message 'lots))
 586          ((eq n 0) (calc-change-mode 'calc-display-working-message nil))
 587          ((eq n 1) (calc-change-mode 'calc-display-working-message t)))
 588    (cond ((eq calc-display-working-message t)
 589           (message "\"Working...\" messages enabled"))
 590          (calc-display-working-message
 591           (message "Detailed \"Working...\" messages enabled"))
 592          (t
 593           (message "\"Working...\" messages disabled")))))
 594
 595 (defun calc-always-load-extensions ()
 596   (interactive)
 597   (calc-wrapper
 598    (if (setq calc-always-load-extensions (not calc-always-load-extensions))
 599        (message "Always loading extensions package")
 600      (message "Loading extensions package on demand only"))))
 601
 602
 603 (defun calc-matrix-left-justify ()
 604   (interactive)
 605   (calc-wrapper
 606    (calc-change-mode 'calc-matrix-just nil t)
 607    (message "Matrix elements will be left-justified in columns")))
 608
 609 (defun calc-matrix-center-justify ()
 610   (interactive)
 611   (calc-wrapper
 612    (calc-change-mode 'calc-matrix-just 'center t)
 613    (message "Matrix elements will be centered in columns")))
 614
 615 (defun calc-matrix-right-justify ()
 616   (interactive)
 617   (calc-wrapper
 618    (calc-change-mode 'calc-matrix-just 'right t)
 619    (message "Matrix elements will be right-justified in columns")))
 620
 621 (defun calc-full-vectors (n)
 622   (interactive "P")
 623   (calc-wrapper
 624    (message (if (calc-change-mode 'calc-full-vectors n t t)
 625                 "Displaying long vectors in full"
 626               "Displaying long vectors in [a, b, c, ..., z] notation"))))
 627
 628 (defun calc-full-trail-vectors (n)
 629   (interactive "P")
 630   (calc-wrapper
 631    (message (if (calc-change-mode 'calc-full-trail-vectors n nil t)
 632                 "Recording long vectors in full"
 633               "Recording long vectors in [a, b, c, ..., z] notation"))))
 634
 635 (defun calc-break-vectors (n)
 636   (interactive "P")
 637   (calc-wrapper
 638    (message (if (calc-change-mode 'calc-break-vectors n t t)
 639                 "Displaying vector elements one-per-line"
 640               "Displaying vector elements all on one line"))))
 641
 642 (defun calc-vector-commas ()
 643   (interactive)
 644   (calc-wrapper
 645    (if (calc-change-mode 'calc-vector-commas (if calc-vector-commas nil ",") t)
 646        (message "Separating vector elements with \",\"")
 647      (message "Separating vector elements with spaces"))))
 648
 649 (defun calc-vector-brackets ()
 650   (interactive)
 651   (calc-wrapper
 652    (if (calc-change-mode 'calc-vector-brackets
 653                          (if (equal calc-vector-brackets "[]") nil "[]") t)
 654        (message "Surrounding vectors with \"[]\"")
 655      (message "Not surrounding vectors with brackets"))))
 656
 657 (defun calc-vector-braces ()
 658   (interactive)
 659   (calc-wrapper
 660    (if (calc-change-mode 'calc-vector-brackets
 661                          (if (equal calc-vector-brackets "{}") nil "{}") t)
 662        (message "Surrounding vectors with \"{}\"")
 663      (message "Not surrounding vectors with brackets"))))
 664
 665 (defun calc-vector-parens ()
 666   (interactive)
 667   (calc-wrapper
 668    (if (calc-change-mode 'calc-vector-brackets
 669                          (if (equal calc-vector-brackets "()") nil "()") t)
 670        (message "Surrounding vectors with \"()\"")
 671      (message "Not surrounding vectors with brackets"))))
 672
 673 (defun calc-matrix-brackets (arg)
 674   (interactive "sCode letters (R, O, C): ")
 675   (calc-wrapper
 676    (let ((code (append (and (string-match "[rR]" arg) '(R))
 677                        (and (string-match "[oO]" arg) '(O))
 678                        (and (string-match "[cC]" arg) '(C))
 679                        (and (string-match "[pP]" arg) '(P))))
 680          (bad (string-match "[^rRoOcCpP ]" arg)))
 681      (if bad
 682          (error "Unrecognized character: %c" (aref arg bad)))
 683      (calc-change-mode 'calc-matrix-brackets code t))))
 684
 685 (provide 'calc-mode)
 686
 687 ;;; calc-mode.el ends here