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

   1 ;;; calc-mode.el --- calculator modes for Calc
   2
   3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
   4
   5 ;; Author: David Gillespie <daveg@synaptics.com>
   6 ;; Maintainer: Colin Walters <walters@debian.org>
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is distributed in the hope that it will be useful,
  11 ;; but WITHOUT ANY WARRANTY.  No author or distributor
  12 ;; accepts responsibility to anyone for the consequences of using it
  13 ;; or for whether it serves any particular purpose or works at all,
  14 ;; unless he says so in writing.  Refer to the GNU Emacs General Public
  15 ;; License for full details.
  16
  17 ;; Everyone is granted permission to copy, modify and redistribute
  18 ;; GNU Emacs, but only under the conditions described in the
  19 ;; GNU Emacs General Public License.   A copy of this license is
  20 ;; supposed to have been given to you along with GNU Emacs so you
  21 ;; can know your rights and responsibilities.  It should be in a
  22 ;; file named COPYING.  Among other things, the copyright notice
  23 ;; and this notice must be preserved on all copies.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29
  30 ;; This file is autoloaded from calc-ext.el.
  31 (require 'calc-ext)
  32
  33 (require 'calc-macs)
  34
  35 (defun calc-Need-calc-mode () nil)
  36
  37
  38 (defun calc-line-numbering (n)
  39   (interactive "P")
  40   (calc-wrapper
  41    (message (if (calc-change-mode 'calc-line-numbering n t t)
  42                 "Displaying stack level numbers"
  43               "Hiding stack level numbers"))))
  44
  45 (defun calc-line-breaking (n)
  46   (interactive "P")
  47   (calc-wrapper
  48    (setq n (if n
  49                (and (> (setq n (prefix-numeric-value n)) 0)
  50                     (or (< n 5)
  51                         n))
  52              (not calc-line-breaking)))
  53    (if (calc-change-mode 'calc-line-breaking n t)
  54        (if (integerp calc-line-breaking)
  55            (message "Breaking lines longer than %d characters" n)
  56          (message "Breaking long lines in Stack display"))
  57      (message "Not breaking long lines in Stack display"))))
  58
  59
  60 (defun calc-left-justify (n)
  61   (interactive "P")
  62   (calc-wrapper
  63    (and n (setq n (prefix-numeric-value n)))
  64    (calc-change-mode '(calc-display-just calc-display-origin)
  65                      (list nil n) t)
  66    (if n
  67        (message "Displaying stack entries indented by %d" n)
  68      (message "Displaying stack entries left-justified"))))
  69
  70 (defun calc-center-justify (n)
  71   (interactive "P")
  72   (calc-wrapper
  73    (and n (setq n (prefix-numeric-value n)))
  74    (calc-change-mode '(calc-display-just calc-display-origin)
  75                      (list 'center n) t)
  76    (if n
  77        (message "Displaying stack entries centered on column %d" n)
  78      (message "Displaying stack entries centered in window"))))
  79
  80 (defun calc-right-justify (n)
  81   (interactive "P")
  82   (calc-wrapper
  83    (and n (setq n (prefix-numeric-value n)))
  84    (calc-change-mode '(calc-display-just calc-display-origin)
  85                      (list 'right n) t)
  86    (if n
  87        (message "Displaying stack entries right-justified to column %d" n)
  88      (message "Displaying stack entries right-justified in window"))))
  89
  90 (defun calc-left-label (s)
  91   (interactive "sLefthand label: ")
  92   (calc-wrapper
  93    (or (equal s "")
  94        (setq s (concat s " ")))
  95    (calc-change-mode 'calc-left-label s t)))
  96
  97 (defun calc-right-label (s)
  98   (interactive "sRighthand label: ")
  99   (calc-wrapper
 100    (or (equal s "")
 101        (setq s (concat " " s)))
 102    (calc-change-mode 'calc-right-label s t)))
 103
 104 (defun calc-auto-why (n)
 105   (interactive "P")
 106   (calc-wrapper
 107    (if n
 108        (progn
 109          (setq n (prefix-numeric-value n))
 110          (if (<= n 0) (setq n nil)
 111            (if (> n 1) (setq n t))))
 112      (setq n (and (not (eq calc-auto-why t)) (if calc-auto-why t 1))))
 113    (calc-change-mode 'calc-auto-why n nil)
 114    (cond ((null n)
 115           (message "User must press `w' to explain unsimplified results"))
 116          ((eq n t)
 117           (message "Automatically doing `w' to explain unsimplified results"))
 118          (t
 119           (message "Automatically doing `w' only for unusual messages")))))
 120
 121 (defun calc-group-digits (n)
 122   (interactive "P")
 123   (calc-wrapper
 124    (if n
 125        (progn
 126          (setq n (prefix-numeric-value n))
 127          (cond ((or (> n 0) (< n -1)))
 128                ((= n -1)
 129                 (setq n nil))
 130                (t
 131                 (setq n calc-group-digits))))
 132      (setq n (not calc-group-digits)))
 133    (calc-change-mode 'calc-group-digits n t)
 134    (cond ((null n)
 135           (message "Grouping is off"))
 136          ((integerp n)
 137           (message "Grouping every %d digits" (math-abs n)))
 138          (t
 139           (message "Grouping is on")))))
 140
 141 (defun calc-group-char (ch)
 142   (interactive "cGrouping character: ")
 143   (calc-wrapper
 144    (or (>= ch 32)
 145        (error "Control characters not allowed for grouping"))
 146    (if (= ch ?\\)
 147        (setq ch "\\,")
 148      (setq ch (char-to-string ch)))
 149    (calc-change-mode 'calc-group-char ch calc-group-digits)
 150    (message "Digit grouping character is \"%s\"" ch)))
 151
 152 (defun calc-point-char (ch)
 153   (interactive "cCharacter to use as decimal point: ")
 154   (calc-wrapper
 155    (or (>= ch 32)
 156        (error "Control characters not allowed as decimal point"))
 157    (calc-change-mode 'calc-point-char (char-to-string ch) t)
 158    (message "Decimal point character is \"%c\"" ch)))
 159
 160 (defun calc-normal-notation (n)
 161   (interactive "P")
 162   (calc-wrapper
 163    (calc-change-mode 'calc-float-format
 164                      (let* ((val (if n (prefix-numeric-value n) 0))
 165                             (mode (/ (+ val 5000) 10000)))
 166                        (if (or (< val -5000) (> mode 3))
 167                            (error "Prefix out of range"))
 168                        (setq n (list (aref [float sci eng fix] mode)
 169                                      (- (% (+ val 5000) 10000) 5000))))
 170                      t)
 171    (if (eq (nth 1 n) 0)
 172        (message "Displaying floating-point numbers normally")
 173      (if (> (nth 1 n) 0)
 174          (message
 175           "Displaying floating-point numbers with %d significant digits"
 176           (nth 1 n))
 177        (message "Displaying floating-point numbers with (precision%d)"
 178                 (nth 1 n))))))
 179
 180 (defun calc-fix-notation (n)
 181   (interactive "NDigits after decimal point: ")
 182   (calc-wrapper
 183    (calc-change-mode 'calc-float-format
 184                      (setq n (list 'fix (if n (prefix-numeric-value n) 0)))
 185                      t)
 186    (message "Displaying floats with %d digits after decimal"
 187             (math-abs (nth 1 n)))))
 188
 189 (defun calc-sci-notation (n)
 190   (interactive "P")
 191   (calc-wrapper
 192    (calc-change-mode 'calc-float-format
 193                      (setq n (list 'sci (if n (prefix-numeric-value n) 0)))
 194                      t)
 195    (if (eq (nth 1 n) 0)
 196        (message "Displaying floats in scientific notation")
 197      (if (> (nth 1 n) 0)
 198          (message "Displaying scientific notation with %d significant digits"
 199                   (nth 1 n))
 200        (message "Displaying scientific notation with (precision%d)"
 201                 (nth 1 n))))))
 202
 203 (defun calc-eng-notation (n)
 204   (interactive "P")
 205   (calc-wrapper
 206    (calc-change-mode 'calc-float-format
 207                      (setq n (list 'eng (if n (prefix-numeric-value n) 0)))
 208                      t)
 209    (if (eq (nth 1 n) 0)
 210        (message "Displaying floats in engineering notation")
 211      (if (> (nth 1 n) 0)
 212          (message "Displaying engineering notation with %d significant digits"
 213                   (nth 1 n))
 214        (message "Displaying engineering notation with (precision%d)"
 215                 (nth 1 n))))))
 216
 217
 218 (defun calc-truncate-stack (n &optional rel)
 219   (interactive "P")
 220   (calc-wrapper
 221    (let ((oldtop calc-stack-top)
 222          (newtop calc-stack-top))
 223      (calc-record-undo (list 'set 'saved-stack-top calc-stack-top))
 224      (let ((calc-stack-top 0)
 225            (nn (prefix-numeric-value n)))
 226        (setq newtop
 227              (if n
 228                  (progn
 229                    (if rel
 230                        (setq nn (+ oldtop nn))
 231                      (if (< nn 0)
 232                          (setq nn (+ nn (calc-stack-size)))
 233                        (setq nn (1+ nn))))
 234                    (if (< nn 1)
 235                        1
 236                      (if (> nn (calc-stack-size))
 237                          (calc-stack-size)
 238                        nn)))
 239                (max 1 (calc-locate-cursor-element (point)))))
 240        (if (= newtop oldtop)
 241            ()
 242          (calc-pop-stack 1 oldtop t)
 243          (calc-push-list '(top-of-stack) newtop)
 244          (if calc-line-numbering
 245              (calc-refresh))))
 246      (calc-record-undo (list 'set 'saved-stack-top 0))
 247      (setq calc-stack-top newtop))))
 248
 249 (defun calc-truncate-up (n)
 250   (interactive "p")
 251   (calc-truncate-stack n t))
 252
 253 (defun calc-truncate-down (n)
 254   (interactive "p")
 255   (calc-truncate-stack (- n) t))
 256
 257 (defun calc-display-raw (arg)
 258   (interactive "P")
 259   (calc-wrapper
 260    (setq calc-display-raw (if calc-display-raw nil (if arg 0 t)))
 261    (calc-do-refresh)
 262    (if calc-display-raw
 263        (message "Press d ' again to cancel \"raw\" display mode"))))
 264
 265
 266
 267
 268 ;;; Mode commands.
 269
 270 (defun calc-save-modes ()
 271   (interactive)
 272   (calc-wrapper
 273    (let (pos
 274          (vals (mapcar (function (lambda (v) (symbol-value (car v))))
 275                        calc-mode-var-list)))
 276      (unless calc-settings-file
 277        (error "No `calc-settings-file' specified"))
 278      (set-buffer (find-file-noselect (substitute-in-file-name
 279                                       calc-settings-file)))
 280      (goto-char (point-min))
 281      (if (and (search-forward ";;; Mode settings stored by Calc" nil t)
 282               (progn
 283                 (beginning-of-line)
 284                 (setq pos (point))
 285                 (search-forward "\n;;; End of mode settings" nil t)))
 286          (progn
 287            (beginning-of-line)
 288            (forward-line 1)
 289            (delete-region pos (point)))
 290        (goto-char (point-max))
 291        (insert "\n\n")
 292        (forward-char -1))
 293      (insert ";;; Mode settings stored by Calc on " (current-time-string) "\n")
 294      (let ((list calc-mode-var-list))
 295        (while list
 296          (let* ((v (car (car list)))
 297                 (def (nth 1 (car list)))
 298                 (val (car vals)))
 299            (or (equal val def)
 300                (progn
 301                  (insert "(setq " (symbol-name v) " ")
 302                  (if (and (or (listp val)
 303                               (symbolp val))
 304                           (not (memq val '(nil t))))
 305                      (insert "'"))
 306                  (insert (prin1-to-string val) ")\n"))))
 307          (setq list (cdr list)
 308                vals (cdr vals))))
 309      (run-hooks 'calc-mode-save-hook)
 310      (insert ";;; End of mode settings\n")
 311      (save-buffer))))
 312
 313 (defun calc-settings-file-name (name &optional arg)
 314   (interactive
 315    (list (read-file-name (format "Settings file name (normally %s): "
 316                                  (abbreviate-file-name (or user-init-file
 317                                                            "~/.emacs"))))
 318          current-prefix-arg))
 319   (calc-wrapper
 320    (setq arg (if arg (prefix-numeric-value arg) 0))
 321    (if (equal name "")
 322        (message "Calc settings file is \"%s\"" calc-settings-file)
 323      (if (< (math-abs arg) 2)
 324          (let ((list calc-mode-var-list))
 325            (while list
 326              (set (car (car list)) (nth 1 (car list)))
 327              (setq list (cdr list)))))
 328      ;; FIXME: we should use ~/.calc or so in order to avoid
 329      ;; reexecuting ~/.emacs (it's not always idempotent) -cgw 2001.11.12
 330      (setq calc-settings-file name)
 331      (or (and
 332           calc-settings-file
 333           (string-match "\\.emacs" calc-settings-file)
 334               (> arg 0))
 335          (< arg 0)
 336          (load name t)
 337          (message "New file")))))
 338
 339 (defun math-get-modes-vec ()
 340   (list 'vec
 341         calc-internal-prec
 342         calc-word-size
 343         (calc-stack-size)
 344         calc-number-radix
 345         (+ (if (<= (nth 1 calc-float-format) 0)
 346                (+ calc-internal-prec (nth 1 calc-float-format))
 347              (nth 1 calc-float-format))
 348            (cdr (assq (car calc-float-format)
 349                       '((float . 0) (sci . 10000)
 350                         (eng . 20000) (fix . 30000)))))
 351         (cond ((eq calc-angle-mode 'rad) 2)
 352               ((eq calc-angle-mode 'hms) 3)
 353               (t 1))
 354         (if calc-symbolic-mode 1 0)
 355         (if calc-prefer-frac 1 0)
 356         (if (eq calc-complex-mode 'polar) 1 0)
 357         (cond ((eq calc-matrix-mode 'scalar) 0)
 358               ((eq calc-matrix-mode 'matrix) -2)
 359               (calc-matrix-mode)
 360               (t -1))
 361         (cond ((eq calc-simplify-mode 'none) -1)
 362               ((eq calc-simplify-mode 'num) 0)
 363               ((eq calc-simplify-mode 'binary) 2)
 364               ((eq calc-simplify-mode 'alg) 3)
 365               ((eq calc-simplify-mode 'ext) 4)
 366               ((eq calc-simplify-mode 'units) 5)
 367               (t 1))
 368         (cond ((eq calc-infinite-mode 1) 0)
 369               (calc-infinite-mode 1)
 370               (t -1))))
 371
 372 (defun calc-get-modes (n)
 373   (interactive "P")
 374   (calc-wrapper
 375    (let ((modes (math-get-modes-vec)))
 376      (calc-enter-result 0 "mode"
 377                         (if n
 378                             (if (and (>= (setq n (prefix-numeric-value n)) 1)
 379                                      (< n (length modes)))
 380                                 (nth n modes)
 381                               (error "Prefix out of range"))
 382                           modes)))))
 383
 384 (defun calc-shift-prefix (arg)
 385   (interactive "P")
 386   (calc-wrapper
 387    (setq calc-shift-prefix (if arg
 388                                (> (prefix-numeric-value arg) 0)
 389                              (not calc-shift-prefix)))
 390    (calc-init-prefixes)
 391    (message (if calc-shift-prefix
 392                 "Prefix keys are now case-insensitive"
 393               "Prefix keys must be unshifted (except V, Z)"))))
 394
 395 (defun calc-mode-record-mode (n)
 396   (interactive "P")
 397   (calc-wrapper
 398    (calc-change-mode 'calc-mode-save-mode
 399                      (cond ((null n)
 400                             (cond ((not calc-embedded-info)
 401                                    (if (eq calc-mode-save-mode 'save)
 402                                        'local 'save))
 403                                   ((eq calc-mode-save-mode 'local)  'edit)
 404                                   ((eq calc-mode-save-mode 'edit)   'perm)
 405                                   ((eq calc-mode-save-mode 'perm)   'global)
 406                                   ((eq calc-mode-save-mode 'global) 'save)
 407                                   ((eq calc-mode-save-mode 'save)   nil)
 408                                   ((eq calc-mode-save-mode nil)     'local)))
 409                            ((= (setq n (prefix-numeric-value n)) 0) nil)
 410                            ((= n 2) 'edit)
 411                            ((= n 3) 'perm)
 412                            ((= n 4) 'global)
 413                            ((= n 5) 'save)
 414                            (t 'local)))
 415    (message (cond ((and (eq calc-mode-save-mode 'local) calc-embedded-info)
 416                    "Recording mode changes with [calc-mode: ...]")
 417                   ((eq calc-mode-save-mode 'edit)
 418                    "Recording mode changes with [calc-edit-mode: ...]")
 419                   ((eq calc-mode-save-mode 'perm)
 420                    "Recording mode changes with [calc-perm-mode: ...]")
 421                   ((eq calc-mode-save-mode 'global)
 422                    "Recording mode changes with [calc-global-mode: ...]")
 423                   ((eq calc-mode-save-mode 'save)
 424                    (format "Recording mode changes in \"%s\""
 425                            calc-settings-file))
 426                   (t
 427                    "Not recording mode changes permanently")))))
 428
 429 (defun calc-total-algebraic-mode (flag)
 430   (interactive "P")
 431   (if calc-emacs-type-19
 432       (error "Total algebraic mode not yet supported for Emacs 19"))
 433   (calc-wrapper
 434    (if (eq calc-algebraic-mode 'total)
 435        (calc-algebraic-mode nil)
 436      (calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
 437                        '(total nil))
 438      (use-local-map calc-alg-map)
 439      (message
 440       "All keys begin algebraic entry; use Meta (ESC) for Calc keys"))))
 441
 442 (defun calc-algebraic-mode (flag)
 443   (interactive "P")
 444   (calc-wrapper
 445    (if flag
 446        (calc-change-mode '(calc-algebraic-mode
 447                            calc-incomplete-algebraic-mode)
 448                          (list nil (not calc-incomplete-algebraic-mode)))
 449      (calc-change-mode '(calc-algebraic-mode calc-incomplete-algebraic-mode)
 450                        (list (not calc-algebraic-mode) nil)))
 451    (use-local-map calc-mode-map)
 452    (message (if calc-algebraic-mode
 453                 "Numeric keys and ( and [ begin algebraic entry"
 454               (if calc-incomplete-algebraic-mode
 455                   "Only ( and [ begin algebraic entry"
 456                 "No keys except ' and $ begin algebraic entry")))))
 457
 458 (defun calc-symbolic-mode (n)
 459   (interactive "P")
 460   (calc-wrapper
 461
 462    (message (if (calc-change-mode 'calc-symbolic-mode n nil t)
 463                 "Inexact computations like sqrt(2) are deferred"
 464               "Numerical computations are always done immediately"))))
 465
 466 (defun calc-infinite-mode (n)
 467   (interactive "P")
 468   (calc-wrapper
 469    (if (eq n 0)
 470        (progn
 471          (calc-change-mode 'calc-infinite-mode 1)
 472          (message "Computations like 1 / 0 produce \"inf\""))
 473      (message (if (calc-change-mode 'calc-infinite-mode n nil t)
 474                   "Computations like 1 / 0 produce \"uinf\""
 475                 "Computations like 1 / 0 are left unsimplified")))))
 476
 477 (defun calc-matrix-mode (arg)
 478   (interactive "P")
 479   (calc-wrapper
 480    (calc-change-mode 'calc-matrix-mode
 481                      (cond ((eq arg 0) 'scalar)
 482                            ((< (prefix-numeric-value arg) 1)
 483                             (and (< (prefix-numeric-value arg) -1) 'matrix))
 484                            (arg (prefix-numeric-value arg))
 485                            ((eq calc-matrix-mode 'matrix) 'scalar)
 486                            ((eq calc-matrix-mode 'scalar) nil)
 487                            (t 'matrix)))
 488    (if (integerp calc-matrix-mode)
 489        (message "Variables are assumed to be %dx%d matrices"
 490                 calc-matrix-mode calc-matrix-mode)
 491      (message (if (eq calc-matrix-mode 'matrix)
 492                   "Variables are assumed to be 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                     (if arg
 500                         (and (> (prefix-numeric-value arg) 0)
 501                              mode)
 502                       (and (not (eq calc-simplify-mode mode))
 503                            mode)))
 504   (message (if (eq calc-simplify-mode mode)
 505                msg
 506              "Default simplifications enabled")))
 507
 508 (defun calc-no-simplify-mode (arg)
 509   (interactive "P")
 510   (calc-wrapper
 511    (calc-set-simplify-mode 'none arg
 512                            "All default simplifications are disabled")))
 513
 514 (defun calc-num-simplify-mode (arg)
 515   (interactive "P")
 516   (calc-wrapper
 517    (calc-set-simplify-mode 'num arg
 518                            "Default simplifications apply only if arguments are numeric")))
 519
 520 (defun calc-default-simplify-mode (arg)
 521   (interactive "p")
 522   (cond ((= arg 1)
 523          (calc-wrapper
 524           (calc-set-simplify-mode
 525            nil nil "Usual default simplifications are enabled")))
 526         ((= arg 0) (calc-num-simplify-mode 1))
 527         ((< arg 0) (calc-no-simplify-mode 1))
 528         ((= arg 2) (calc-bin-simplify-mode 1))
 529         ((= arg 3) (calc-alg-simplify-mode 1))
 530         ((= arg 4) (calc-ext-simplify-mode 1))
 531         ((= arg 5) (calc-units-simplify-mode 1))
 532         (t (error "Prefix argument out of range"))))
 533
 534 (defun calc-bin-simplify-mode (arg)
 535   (interactive "P")
 536   (calc-wrapper
 537    (calc-set-simplify-mode 'binary arg
 538                            (format "Binary simplification occurs by default (word size=%d)"
 539                                    calc-word-size))))
 540
 541 (defun calc-alg-simplify-mode (arg)
 542   (interactive "P")
 543   (calc-wrapper
 544    (calc-set-simplify-mode 'alg arg
 545                            "Algebraic simplification occurs by default")))
 546
 547 (defun calc-ext-simplify-mode (arg)
 548   (interactive "P")
 549   (calc-wrapper
 550    (calc-set-simplify-mode 'ext arg
 551                            "Extended algebraic simplification occurs by default")))
 552
 553 (defun calc-units-simplify-mode (arg)
 554   (interactive "P")
 555   (calc-wrapper
 556    (calc-set-simplify-mode 'units arg
 557                            "Units simplification occurs by default")))
 558
 559 (defun calc-auto-recompute (arg)
 560   (interactive "P")
 561   (calc-wrapper
 562    (calc-change-mode 'calc-auto-recompute arg nil t)
 563    (calc-refresh-evaltos)
 564    (message (if calc-auto-recompute
 565                 "Automatically recomputing `=>' forms when necessary"
 566               "Not recomputing `=>' forms automatically"))))
 567
 568 (defun calc-working (n)
 569   (interactive "P")
 570   (calc-wrapper
 571    (cond ((consp n)
 572           (calc-pop-push-record 0 "work"
 573                                 (cond ((eq calc-display-working-message t) 1)
 574                                       (calc-display-working-message 2)
 575                                       (t 0))))
 576          ((eq n 2) (calc-change-mode 'calc-display-working-message 'lots))
 577          ((eq n 0) (calc-change-mode 'calc-display-working-message nil))
 578          ((eq n 1) (calc-change-mode 'calc-display-working-message t)))
 579    (cond ((eq calc-display-working-message t)
 580           (message "\"Working...\" messages enabled"))
 581          (calc-display-working-message
 582           (message "Detailed \"Working...\" messages enabled"))
 583          (t
 584           (message "\"Working...\" messages disabled")))))
 585
 586 (defun calc-always-load-extensions ()
 587   (interactive)
 588   (calc-wrapper
 589    (if (setq calc-always-load-extensions (not calc-always-load-extensions))
 590        (message "Always loading extensions package")
 591      (message "Loading extensions package on demand only"))))
 592
 593
 594 (defun calc-matrix-left-justify ()
 595   (interactive)
 596   (calc-wrapper
 597    (calc-change-mode 'calc-matrix-just nil t)
 598    (message "Matrix elements will be left-justified in columns")))
 599
 600 (defun calc-matrix-center-justify ()
 601   (interactive)
 602   (calc-wrapper
 603    (calc-change-mode 'calc-matrix-just 'center t)
 604    (message "Matrix elements will be centered in columns")))
 605
 606 (defun calc-matrix-right-justify ()
 607   (interactive)
 608   (calc-wrapper
 609    (calc-change-mode 'calc-matrix-just 'right t)
 610    (message "Matrix elements will be right-justified in columns")))
 611
 612 (defun calc-full-vectors (n)
 613   (interactive "P")
 614   (calc-wrapper
 615    (message (if (calc-change-mode 'calc-full-vectors n t t)
 616                 "Displaying long vectors in full"
 617               "Displaying long vectors in [a, b, c, ..., z] notation"))))
 618
 619 (defun calc-full-trail-vectors (n)
 620   (interactive "P")
 621   (calc-wrapper
 622    (message (if (calc-change-mode 'calc-full-trail-vectors n nil t)
 623                 "Recording long vectors in full"
 624               "Recording long vectors in [a, b, c, ..., z] notation"))))
 625
 626 (defun calc-break-vectors (n)
 627   (interactive "P")
 628   (calc-wrapper
 629    (message (if (calc-change-mode 'calc-break-vectors n t t)
 630                 "Displaying vector elements one-per-line"
 631               "Displaying vector elements all on one line"))))
 632
 633 (defun calc-vector-commas ()
 634   (interactive)
 635   (calc-wrapper
 636    (if (calc-change-mode 'calc-vector-commas (if calc-vector-commas nil ",") t)
 637        (message "Separating vector elements with \",\"")
 638      (message "Separating vector elements with spaces"))))
 639
 640 (defun calc-vector-brackets ()
 641   (interactive)
 642   (calc-wrapper
 643    (if (calc-change-mode 'calc-vector-brackets
 644                          (if (equal calc-vector-brackets "[]") nil "[]") t)
 645        (message "Surrounding vectors with \"[]\"")
 646      (message "Not surrounding vectors with brackets"))))
 647
 648 (defun calc-vector-braces ()
 649   (interactive)
 650   (calc-wrapper
 651    (if (calc-change-mode 'calc-vector-brackets
 652                          (if (equal calc-vector-brackets "{}") nil "{}") t)
 653        (message "Surrounding vectors with \"{}\"")
 654      (message "Not surrounding vectors with brackets"))))
 655
 656 (defun calc-vector-parens ()
 657   (interactive)
 658   (calc-wrapper
 659    (if (calc-change-mode 'calc-vector-brackets
 660                          (if (equal calc-vector-brackets "()") nil "()") t)
 661        (message "Surrounding vectors with \"()\"")
 662      (message "Not surrounding vectors with brackets"))))
 663
 664 (defun calc-matrix-brackets (arg)
 665   (interactive "sCode letters (R, O, C, P): ")
 666   (calc-wrapper
 667    (let ((code (append (and (string-match "[rR]" arg) '(R))
 668                        (and (string-match "[oO]" arg) '(O))
 669                        (and (string-match "[cC]" arg) '(C))
 670                        (and (string-match "[pP]" arg) '(P))))
 671          (bad (string-match "[^rRoOcCpP ]" arg)))
 672      (if bad
 673          (error "Unrecognized character: %c" (aref arg bad)))
 674      (calc-change-mode 'calc-matrix-brackets code t))))
 675
 676 ;;; calc-mode.el ends here