(math-to-percentsigns): Declare as function.
[bpt/emacs.git] / lisp / calc / calccomp.el
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1;;; calccomp.el --- composition functions for Calc
2
58ba2f8f 3;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
f0fa15c5 4;; 2005, 2006, 2007 Free Software Foundation, Inc.
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5
6;; Author: David Gillespie <daveg@synaptics.com>
e8fff8ed 7;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com>
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8
9;; This file is part of GNU Emacs.
10
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11;; GNU Emacs is free software; you can redistribute it and/or modify
12;; it under the terms of the GNU General Public License as published by
075969b4 13;; the Free Software Foundation; either version 3, or (at your option)
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14;; any later version.
15
136211a9 16;; GNU Emacs is distributed in the hope that it will be useful,
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17;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19;; GNU General Public License for more details.
20
21;; You should have received a copy of the GNU General Public License
22;; along with GNU Emacs; see the file COPYING. If not, write to the
23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24;; Boston, MA 02110-1301, USA.
136211a9 25
3132f345 26;;; Commentary:
136211a9 27
3132f345 28;;; Code:
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29
30;; This file is autoloaded from calc-ext.el.
136211a9 31
cfd31ee4 32(require 'calc-ext)
136211a9
EZ
33(require 'calc-macs)
34
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EZ
35;;; A "composition" has one of the following forms:
36;;;
37;;; "string" A literal string
38;;;
39;;; (horiz C1 C2 ...) Horizontally abutted sub-compositions
40;;;
41;;; (set LEVEL OFF) Set left margin + offset for line-break level
42;;; (break LEVEL) A potential line-break point
43;;;
44;;; (vleft N C1 C2 ...) Vertically stacked, left-justified sub-comps
45;;; (vcent N C1 C2 ...) Vertically stacked, centered sub-comps
46;;; (vright N C1 C2 ...) Vertically stacked, right-justified sub-comps
47;;; N specifies baseline of the stack, 0=top line.
48;;;
49;;; (supscr C1 C2) Composition C1 with superscript C2
50;;; (subscr C1 C2) Composition C1 with subscript C2
51;;; (rule X) Horizontal line of X, full width of enclosing comp
52;;;
53;;; (tag X C) Composition C corresponds to sub-expression X
54
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55;; math-comp-just and math-comp-comma-spc are local to
56;; math-compose-expr, but are used by math-compose-matrix, which is
57;; called by math-compose-expr
58(defvar math-comp-just)
59(defvar math-comp-comma-spc)
60
61;; math-comp-vector-prec is local to math-compose-expr, but is used by
62;; math-compose-matrix and math-compose-rows, which are called by
63;; math-compose-expr.
64(defvar math-comp-vector-prec)
65
66;; math-comp-left-bracket, math-comp-right-bracket and math-comp-comma are
67;; local to math-compose-expr, but are used by math-compose-rows, which is
68;; called by math-compose-expr.
69(defvar math-comp-left-bracket)
70(defvar math-comp-right-bracket)
71(defvar math-comp-comma)
72
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JB
73(defun math-compose-var (a)
74 (let (v)
75 (if (and math-compose-hash-args
76 (let ((p calc-arg-values))
77 (setq v 1)
78 (while (and p (not (equal (car p) a)))
79 (setq p (and (eq math-compose-hash-args t) (cdr p))
80 v (1+ v)))
81 p))
82 (if (eq math-compose-hash-args 1)
83 "#"
84 (format "#%d" v))
85 (if (memq calc-language calc-lang-allow-underscores)
86 (math-to-underscores (symbol-name (nth 1 a)))
87 (symbol-name (nth 1 a))))))
fdcf8e2b 88
136211a9 89(defun math-compose-expr (a prec)
ddaad609 90 (let ((math-compose-level (1+ math-compose-level))
b20c4725 91 (math-expr-opers (math-expr-ops))
ddaad609 92 spfn)
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EZ
93 (cond
94 ((or (and (eq a math-comp-selected) a)
95 (and math-comp-tagged
96 (not (eq math-comp-tagged a))))
97 (let ((math-comp-selected nil))
98 (and math-comp-tagged (setq math-comp-tagged a))
99 (list 'tag a (math-compose-expr a prec))))
100 ((and (not (consp a)) (not (integerp a)))
101 (concat "'" (prin1-to-string a)))
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102 ((setq spfn (assq (car-safe a)
103 (get calc-language 'math-special-function-table)))
ddaad609 104 (setq spfn (cdr spfn))
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105 (if (consp spfn)
106 (funcall (car spfn) a spfn)
107 (funcall spfn a)))
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108 ((math-scalarp a)
109 (if (or (eq (car-safe a) 'frac)
110 (and (nth 1 calc-frac-format) (Math-integerp a)))
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JB
111 (if (and
112 calc-language
113 (not (memq calc-language
114 '(flat big unform))))
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EZ
115 (let ((aa (math-adjust-fraction a))
116 (calc-frac-format nil))
117 (math-compose-expr (list '/
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JB
118 (if (memq calc-language
119 calc-lang-slash-idiv)
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120 (math-float (nth 1 aa))
121 (nth 1 aa))
122 (nth 2 aa)) prec))
123 (if (and (eq calc-language 'big)
124 (= (length (car calc-frac-format)) 1))
125 (let* ((aa (math-adjust-fraction a))
126 (calc-frac-format nil)
127 (math-radix-explicit-format nil)
128 (c (list 'horiz
129 (if (math-negp (nth 1 aa))
130 "- " "")
131 (list 'vcent 1
132 (math-format-number
133 (math-abs (nth 1 aa)))
134 '(rule ?-)
135 (math-format-number (nth 2 aa))))))
136 (if (= calc-number-radix 10)
137 c
138 (list 'horiz "(" c
139 (list 'subscr ")"
140 (int-to-string calc-number-radix)))))
141 (math-format-number a)))
142 (if (not (eq calc-language 'big))
143 (math-format-number a prec)
144 (if (memq (car-safe a) '(cplx polar))
145 (if (math-zerop (nth 2 a))
146 (math-compose-expr (nth 1 a) prec)
147 (list 'horiz "("
148 (math-compose-expr (nth 1 a) 0)
149 (if (eq (car a) 'cplx) ", " "; ")
150 (math-compose-expr (nth 2 a) 0) ")"))
151 (if (or (= calc-number-radix 10)
152 (not (Math-realp a))
153 (and calc-group-digits
154 (not (assoc calc-group-char '((",") (" "))))))
155 (math-format-number a prec)
156 (let ((s (math-format-number a prec))
157 (c nil))
158 (while (string-match (if (> calc-number-radix 14)
159 "\\([0-9]+\\)#\\([0-9a-zA-Z., ]+\\)"
160 "\\([0-9]+\\)#\\([0-9a-dA-D., ]+\\)")
161 s)
162 (setq c (nconc c (list (substring s 0 (match-beginning 0))
163 (list 'subscr
164 (math-match-substring s 2)
165 (math-match-substring s 1))))
166 s (substring s (match-end 0))))
167 (if (string-match
168 "\\*\\([0-9.]+\\)\\^\\(-?[0-9]+\\)\\()?\\)\\'" s)
169 (setq s (list 'horiz
170 (substring s 0 (match-beginning 0)) " "
171 (list 'supscr
172 (math-match-substring s 1)
173 (math-match-substring s 2))
174 (math-match-substring s 3))))
175 (if c (cons 'horiz (nconc c (list s))) s)))))))
176 ((and (get (car a) 'math-compose-forms)
177 (not (eq calc-language 'unform))
178 (let ((comps (get (car a) 'math-compose-forms))
179 temp temp2)
180 (or (and (setq temp (assq calc-language comps))
181 (or (and (setq temp2 (assq (1- (length a)) (cdr temp)))
182 (setq temp (apply (cdr temp2) (cdr a)))
183 (math-compose-expr temp prec))
184 (and (setq temp2 (assq nil (cdr temp)))
185 (funcall (cdr temp2) a))))
186 (and (setq temp (assq nil comps))
187 (or (and (setq temp2 (assq (1- (length a)) (cdr temp)))
188 (setq temp (apply (cdr temp2) (cdr a)))
189 (math-compose-expr temp prec))
190 (and (setq temp2 (assq nil (cdr temp)))
191 (funcall (cdr temp2) a))))))))
192 ((eq (car a) 'vec)
fdcf8e2b 193 (let* ((math-comp-left-bracket (if calc-vector-brackets
136211a9 194 (substring calc-vector-brackets 0 1) ""))
fdcf8e2b 195 (math-comp-right-bracket (if calc-vector-brackets
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196 (substring calc-vector-brackets 1 2) ""))
197 (inner-brackets (memq 'R calc-matrix-brackets))
198 (outer-brackets (memq 'O calc-matrix-brackets))
199 (row-commas (memq 'C calc-matrix-brackets))
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200 (math-comp-comma-spc (or calc-vector-commas " "))
201 (math-comp-comma (or calc-vector-commas ""))
202 (math-comp-vector-prec (if (or (and calc-vector-commas
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203 (math-vector-no-parens a))
204 (memq 'P calc-matrix-brackets)) 0 1000))
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205 (math-comp-just (cond ((eq calc-matrix-just 'right) 'vright)
206 ((eq calc-matrix-just 'center) 'vcent)
207 (t 'vleft)))
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208 (break calc-break-vectors))
209 (if (and (memq calc-language '(nil big))
210 (not calc-break-vectors)
211 (math-matrixp a) (not (math-matrixp (nth 1 a)))
212 (or calc-full-vectors
213 (and (< (length a) 7) (< (length (nth 1 a)) 7))
214 (progn (setq break t) nil)))
215 (if (progn
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216 (setq math-comp-vector-prec (if (or (and calc-vector-commas
217 (math-vector-no-parens
218 (nth 1 a)))
219 (memq 'P calc-matrix-brackets))
220 0 1000))
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221 (= (length a) 2))
222 (list 'horiz
fdcf8e2b
JB
223 (concat math-comp-left-bracket math-comp-left-bracket " ")
224 (math-compose-vector (cdr (nth 1 a)) (concat math-comp-comma " ")
225 math-comp-vector-prec)
226 (concat " " math-comp-right-bracket math-comp-right-bracket))
136211a9
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227 (let* ((rows (1- (length a)))
228 (cols (1- (length (nth 1 a))))
229 (base (/ (1- rows) 2))
230 (calc-language 'flat))
231 (append '(horiz)
232 (list (append '(vleft)
233 (list base)
234 (list (concat (and outer-brackets
fdcf8e2b 235 (concat math-comp-left-bracket
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236 " "))
237 (and inner-brackets
fdcf8e2b 238 (concat math-comp-left-bracket
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239 " "))))
240 (make-list (1- rows)
241 (concat (and outer-brackets
242 " ")
243 (and inner-brackets
244 (concat
fdcf8e2b 245 math-comp-left-bracket
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246 " "))))))
247 (math-compose-matrix (cdr a) 1 cols base)
248 (list (append '(vleft)
249 (list base)
250 (make-list (1- rows)
251 (if inner-brackets
252 (concat " "
fdcf8e2b 253 math-comp-right-bracket
136211a9 254 (and row-commas
fdcf8e2b 255 math-comp-comma))
136211a9
EZ
256 (if (and outer-brackets
257 row-commas)
258 ";" "")))
259 (list (concat
260 (and inner-brackets
261 (concat " "
fdcf8e2b 262 math-comp-right-bracket))
136211a9
EZ
263 (and outer-brackets
264 (concat
265 " "
fdcf8e2b 266 math-comp-right-bracket)))))))))
136211a9
EZ
267 (if (and calc-display-strings
268 (cdr a)
269 (math-vector-is-string a))
270 (math-vector-to-string a t)
271 (if (and break (cdr a)
272 (not (eq calc-language 'flat)))
273 (let* ((full (or calc-full-vectors (< (length a) 7)))
274 (rows (if full (1- (length a)) 5))
275 (base (/ (1- rows) 2))
136211a9
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276 (calc-break-vectors nil))
277 (list 'horiz
278 (cons 'vleft (cons base
279 (math-compose-rows
280 (cdr a)
281 (if full rows 3) t)))))
282 (if (or calc-full-vectors (< (length a) 7))
018f0ad2
JB
283 (if (and
284 (setq spfn (get calc-language 'math-matrix-formatter))
285 (math-matrixp a))
286 (funcall spfn a)
287 (list 'horiz
288 math-comp-left-bracket
289 (math-compose-vector (cdr a)
290 (concat math-comp-comma " ")
291 math-comp-vector-prec)
292 math-comp-right-bracket))
136211a9 293 (list 'horiz
fdcf8e2b 294 math-comp-left-bracket
136211a9 295 (math-compose-vector (list (nth 1 a) (nth 2 a) (nth 3 a))
fdcf8e2b
JB
296 (concat math-comp-comma " ")
297 math-comp-vector-prec)
018f0ad2
JB
298 math-comp-comma
299 (if (setq spfn (get calc-language 'math-dots))
300 (concat " " spfn)
301 " ...")
fdcf8e2b 302 math-comp-comma " "
136211a9
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303 (list 'break math-compose-level)
304 (math-compose-expr (nth (1- (length a)) a)
fdcf8e2b
JB
305 (if (equal math-comp-comma "") 1000 0))
306 math-comp-right-bracket)))))))
136211a9
EZ
307 ((eq (car a) 'incomplete)
308 (if (cdr (cdr a))
309 (cond ((eq (nth 1 a) 'vec)
310 (list 'horiz "["
311 (math-compose-vector (cdr (cdr a)) ", " 0)
312 " ..."))
313 ((eq (nth 1 a) 'cplx)
314 (list 'horiz "("
315 (math-compose-vector (cdr (cdr a)) ", " 0)
316 ", ..."))
317 ((eq (nth 1 a) 'polar)
318 (list 'horiz "("
319 (math-compose-vector (cdr (cdr a)) "; " 0)
320 "; ..."))
321 ((eq (nth 1 a) 'intv)
322 (list 'horiz
323 (if (memq (nth 2 a) '(0 1)) "(" "[")
324 (math-compose-vector (cdr (cdr (cdr a))) " .. " 0)
325 " .. ..."))
326 (t (format "%s" a)))
327 (cond ((eq (nth 1 a) 'vec) "[ ...")
328 ((eq (nth 1 a) 'intv)
329 (if (memq (nth 2 a) '(0 1)) "( ..." "[ ..."))
330 (t "( ..."))))
331 ((eq (car a) 'var)
332 (let ((v (rassq (nth 2 a) math-expr-variable-mapping)))
333 (if v
334 (symbol-name (car v))
018f0ad2 335 (if (setq spfn (get calc-language 'math-var-formatter))
2b8a3002
JB
336 (funcall spfn a prec)
337 (math-compose-var a)))))
136211a9
EZ
338 ((eq (car a) 'intv)
339 (list 'horiz
018f0ad2 340 (if (memq (nth 1 a) '(0 1)) "(" "[")
136211a9 341 (math-compose-expr (nth 2 a) 0)
018f0ad2 342 " .. "
136211a9 343 (math-compose-expr (nth 3 a) 0)
018f0ad2 344 (if (memq (nth 1 a) '(0 2)) ")" "]")))
136211a9
EZ
345 ((eq (car a) 'date)
346 (if (eq (car calc-date-format) 'X)
347 (math-format-date a)
348 (concat "<" (math-format-date a) ">")))
018f0ad2
JB
349 ((and (eq (car a) 'calcFunc-subscr)
350 (setq spfn (get calc-language 'math-compose-subscr)))
351 (funcall spfn a))
136211a9
EZ
352 ((and (eq (car a) 'calcFunc-subscr) (= (length a) 3)
353 (eq calc-language 'big))
354 (let* ((a1 (math-compose-expr (nth 1 a) 1000))
355 (calc-language 'flat)
356 (a2 (math-compose-expr (nth 2 a) 0)))
357 (if (or (eq (car-safe a1) 'subscr)
358 (and (eq (car-safe a1) 'tag)
359 (eq (car-safe (nth 2 a1)) 'subscr)
360 (setq a1 (nth 2 a1))))
361 (list 'subscr
362 (nth 1 a1)
363 (list 'horiz
364 (nth 2 a1)
365 ", "
366 a2))
367 (list 'subscr a1 a2))))
136211a9
EZ
368 ((and (eq (car a) '^)
369 (eq calc-language 'big))
370 (list 'supscr
371 (if (or (math-looks-negp (nth 1 a))
372 (memq (car-safe (nth 1 a)) '(^ / frac calcFunc-sqrt))
373 (and (eq (car-safe (nth 1 a)) 'cplx)
374 (math-negp (nth 1 (nth 1 a)))
375 (eq (nth 2 (nth 1 a)) 0)))
376 (list 'horiz "(" (math-compose-expr (nth 1 a) 0) ")")
377 (math-compose-expr (nth 1 a) 201))
378 (let ((calc-language 'flat)
379 (calc-number-radix 10))
380 (math-compose-expr (nth 2 a) 0))))
381 ((and (eq (car a) '/)
382 (eq calc-language 'big))
383 (let ((a1 (let ((calc-language (if (memq (car-safe (nth 1 a)) '(/ frac))
384 'flat 'big)))
385 (math-compose-expr (nth 1 a) 0)))
386 (a2 (let ((calc-language (if (memq (car-safe (nth 2 a)) '(/ frac))
387 'flat 'big)))
388 (math-compose-expr (nth 2 a) 0))))
389 (list 'vcent
390 (math-comp-height a1)
391 a1 '(rule ?-) a2)))
136211a9
EZ
392 ((and (eq (car a) 'calcFunc-lambda)
393 (> (length a) 2)
394 (memq calc-language '(nil flat big)))
395 (let ((p (cdr a))
396 (ap calc-arg-values)
397 (math-compose-hash-args (if (= (length a) 3) 1 t)))
398 (while (and (cdr p) (equal (car p) (car ap)))
399 (setq p (cdr p) ap (cdr ap)))
400 (append '(horiz "<")
401 (if (cdr p)
402 (list (math-compose-vector
403 (nreverse (cdr (reverse (cdr a)))) ", " 0)
404 " : ")
405 nil)
406 (list (math-compose-expr (nth (1- (length a)) a) 0)
407 ">"))))
408 ((and (eq (car a) 'calcFunc-string)
409 (= (length a) 2)
410 (math-vectorp (nth 1 a))
411 (math-vector-is-string (nth 1 a)))
412 (if (eq calc-language 'unform)
413 (concat "string(" (math-vector-to-string (nth 1 a) t) ")")
414 (math-vector-to-string (nth 1 a) nil)))
415 ((and (eq (car a) 'calcFunc-bstring)
416 (= (length a) 2)
417 (math-vectorp (nth 1 a))
418 (math-vector-is-string (nth 1 a)))
419 (if (eq calc-language 'unform)
420 (concat "bstring(" (math-vector-to-string (nth 1 a) t) ")")
421 (let ((c nil)
422 (s (math-vector-to-string (nth 1 a) nil))
423 p)
424 (while (string-match "[^ ] +[^ ]" s)
425 (setq p (1- (match-end 0))
426 c (cons (list 'break math-compose-level)
427 (cons (substring s 0 p)
428 c))
429 s (substring s p)))
430 (setq c (nreverse (cons s c)))
431 (or (= prec -123)
432 (setq c (cons (list 'set math-compose-level 2) c)))
433 (cons 'horiz c))))
434 ((and (eq (car a) 'calcFunc-cprec)
435 (not (eq calc-language 'unform))
436 (= (length a) 3)
437 (integerp (nth 2 a)))
438 (let ((c (math-compose-expr (nth 1 a) -1)))
439 (if (> prec (nth 2 a))
018f0ad2
JB
440 (if (setq spfn (get calc-language 'math-big-parens))
441 (list 'horiz (car spfn) c (cdr spfn))
442 (list 'horiz "(" c ")"))
136211a9
EZ
443 c)))
444 ((and (eq (car a) 'calcFunc-choriz)
445 (not (eq calc-language 'unform))
446 (memq (length a) '(2 3 4))
447 (math-vectorp (nth 1 a))
448 (if (integerp (nth 2 a))
449 (or (null (nth 3 a))
450 (and (math-vectorp (nth 3 a))
451 (math-vector-is-string (nth 3 a))))
452 (or (null (nth 2 a))
453 (and (math-vectorp (nth 2 a))
454 (math-vector-is-string (nth 2 a))))))
455 (let* ((cprec (and (integerp (nth 2 a)) (nth 2 a)))
456 (sep (nth (if cprec 3 2) a))
457 (bprec nil))
458 (if sep
459 (math-compose-vector (cdr (nth 1 a))
460 (math-vector-to-string sep nil)
461 (or cprec prec))
462 (cons 'horiz (mapcar (function
463 (lambda (x)
464 (if (eq (car-safe x) 'calcFunc-bstring)
465 (prog1
466 (math-compose-expr
467 x (or bprec cprec prec))
468 (setq bprec -123))
469 (math-compose-expr x (or cprec prec)))))
470 (cdr (nth 1 a)))))))
471 ((and (memq (car a) '(calcFunc-cvert calcFunc-clvert calcFunc-crvert))
472 (not (eq calc-language 'unform))
473 (memq (length a) '(2 3))
474 (math-vectorp (nth 1 a))
475 (or (null (nth 2 a))
476 (integerp (nth 2 a))))
477 (let* ((base 0)
478 (v 0)
479 (prec (or (nth 2 a) prec))
480 (c (mapcar (function
481 (lambda (x)
482 (let ((b nil) (cc nil) a d)
483 (if (and (memq (car-safe x) '(calcFunc-cbase
484 calcFunc-ctbase
485 calcFunc-cbbase))
486 (memq (length x) '(1 2)))
487 (setq b (car x)
488 x (nth 1 x)))
489 (if (and (eq (car-safe x) 'calcFunc-crule)
490 (memq (length x) '(1 2))
491 (or (null (nth 1 x))
492 (and (math-vectorp (nth 1 x))
493 (= (length (nth 1 x)) 2)
494 (math-vector-is-string
495 (nth 1 x)))
496 (and (natnump (nth 1 x))
497 (<= (nth 1 x) 255))))
498 (setq cc (list
499 'rule
500 (if (math-vectorp (nth 1 x))
501 (aref (math-vector-to-string
502 (nth 1 x) nil) 0)
503 (or (nth 1 x) ?-))))
504 (or (and (memq (car-safe x) '(calcFunc-cvspace
505 calcFunc-ctspace
506 calcFunc-cbspace))
507 (memq (length x) '(2 3))
508 (eq (nth 1 x) 0))
509 (null x)
510 (setq cc (math-compose-expr x prec))))
511 (setq a (if cc (math-comp-ascent cc) 0)
512 d (if cc (math-comp-descent cc) 0))
513 (if (eq b 'calcFunc-cbase)
514 (setq base (+ v a -1))
515 (if (eq b 'calcFunc-ctbase)
516 (setq base v)
517 (if (eq b 'calcFunc-cbbase)
518 (setq base (+ v a d -1)))))
519 (setq v (+ v a d))
520 cc)))
521 (cdr (nth 1 a)))))
522 (setq c (delq nil c))
523 (if c
524 (cons (if (eq (car a) 'calcFunc-cvert) 'vcent
525 (if (eq (car a) 'calcFunc-clvert) 'vleft 'vright))
526 (cons base c))
527 " ")))
528 ((and (memq (car a) '(calcFunc-csup calcFunc-csub))
529 (not (eq calc-language 'unform))
530 (memq (length a) '(3 4))
531 (or (null (nth 3 a))
532 (integerp (nth 3 a))))
533 (list (if (eq (car a) 'calcFunc-csup) 'supscr 'subscr)
534 (math-compose-expr (nth 1 a) (or (nth 3 a) 0))
535 (math-compose-expr (nth 2 a) 0)))
536 ((and (eq (car a) 'calcFunc-cflat)
537 (not (eq calc-language 'unform))
538 (memq (length a) '(2 3))
539 (or (null (nth 2 a))
540 (integerp (nth 2 a))))
541 (let ((calc-language (if (memq calc-language '(nil big))
542 'flat calc-language)))
543 (math-compose-expr (nth 1 a) (or (nth 2 a) 0))))
544 ((and (eq (car a) 'calcFunc-cspace)
545 (memq (length a) '(2 3))
546 (natnump (nth 1 a)))
547 (if (nth 2 a)
548 (cons 'horiz (make-list (nth 1 a)
549 (if (and (math-vectorp (nth 2 a))
550 (math-vector-is-string (nth 2 a)))
551 (math-vector-to-string (nth 2 a) nil)
552 (math-compose-expr (nth 2 a) 0))))
553 (make-string (nth 1 a) ?\ )))
554 ((and (memq (car a) '(calcFunc-cvspace calcFunc-ctspace calcFunc-cbspace))
555 (memq (length a) '(2 3))
556 (natnump (nth 1 a)))
557 (if (= (nth 1 a) 0)
558 ""
559 (let* ((c (if (nth 2 a)
560 (if (and (math-vectorp (nth 2 a))
561 (math-vector-is-string (nth 2 a)))
562 (math-vector-to-string (nth 2 a) nil)
563 (math-compose-expr (nth 2 a) 0))
564 " "))
565 (ca (math-comp-ascent c))
566 (cd (math-comp-descent c)))
567 (cons 'vleft
568 (cons (if (eq (car a) 'calcFunc-ctspace)
569 (1- ca)
570 (if (eq (car a) 'calcFunc-cbspace)
571 (+ (* (1- (nth 1 a)) (+ ca cd)) (1- ca))
572 (/ (1- (* (nth 1 a) (+ ca cd))) 2)))
573 (make-list (nth 1 a) c))))))
574 ((and (eq (car a) 'calcFunc-evalto)
575 (setq calc-any-evaltos t)
018f0ad2 576 (setq spfn (get calc-language 'math-evalto))
136211a9
EZ
577 (= math-compose-level (if math-comp-tagged 2 1))
578 (= (length a) 3))
579 (list 'horiz
018f0ad2 580 (car spfn)
136211a9 581 (math-compose-expr (nth 1 a) 0)
018f0ad2 582 (cdr spfn)
136211a9
EZ
583 (math-compose-expr (nth 2 a) 0)))
584 (t
585 (let ((op (and (not (eq calc-language 'unform))
586 (if (and (eq (car a) 'calcFunc-if) (= (length a) 4))
587 (assoc "?" math-expr-opers)
588 (math-assq2 (car a) math-expr-opers)))))
589 (cond ((and op
590 (or (= (length a) 3) (eq (car a) 'calcFunc-if))
591 (/= (nth 3 op) -1))
592 (cond
593 ((> prec (or (nth 4 op) (min (nth 2 op) (nth 3 op))))
ddaad609 594 (if (and (memq calc-language '(tex latex))
136211a9
EZ
595 (not (math-tex-expr-is-flat a)))
596 (if (eq (car-safe a) '/)
597 (list 'horiz "{" (math-compose-expr a -1) "}")
598 (list 'horiz "\\left( "
599 (math-compose-expr a -1)
600 " \\right)"))
601 (if (eq calc-language 'eqn)
602 (if (or (eq (car-safe a) '/)
603 (= (/ prec 100) 9))
604 (list 'horiz "{" (math-compose-expr a -1) "}")
605 (if (math-tex-expr-is-flat a)
606 (list 'horiz "( " (math-compose-expr a -1) " )")
607 (list 'horiz "{left ( "
608 (math-compose-expr a -1)
609 " right )}")))
610 (list 'horiz "(" (math-compose-expr a 0) ")"))))
ddaad609 611 ((and (memq calc-language '(tex latex))
136211a9
EZ
612 (memq (car a) '(/ calcFunc-choose calcFunc-evalto))
613 (>= prec 0))
614 (list 'horiz "{" (math-compose-expr a -1) "}"))
615 ((eq (car a) 'calcFunc-if)
616 (list 'horiz
617 (math-compose-expr (nth 1 a) (nth 2 op))
618 " ? "
619 (math-compose-expr (nth 2 a) 0)
620 " : "
621 (math-compose-expr (nth 3 a) (nth 3 op))))
622 (t
623 (let* ((math-comp-tagged (and math-comp-tagged
624 (not (math-primp a))
625 math-comp-tagged))
626 (setlev (if (= prec (min (nth 2 op) (nth 3 op)))
627 (progn
628 (setq math-compose-level
629 (1- math-compose-level))
630 nil)
631 math-compose-level))
632 (lhs (math-compose-expr (nth 1 a) (nth 2 op)))
633 (rhs (math-compose-expr (nth 2 a) (nth 3 op))))
634 (and (equal (car op) "^")
635 (eq (math-comp-first-char lhs) ?-)
636 (setq lhs (list 'horiz "(" lhs ")")))
ddaad609 637 (and (memq calc-language '(tex latex))
136211a9
EZ
638 (or (equal (car op) "^") (equal (car op) "_"))
639 (not (and (stringp rhs) (= (length rhs) 1)))
640 (setq rhs (list 'horiz "{" rhs "}")))
641 (or (and (eq (car a) '*)
642 (or (null calc-language)
643 (assoc "2x" math-expr-opers))
644 (let* ((prevt (math-prod-last-term (nth 1 a)))
645 (nextt (math-prod-first-term (nth 2 a)))
646 (prevc (or (math-comp-last-char lhs)
647 (and (memq (car-safe prevt)
648 '(^ calcFunc-subscr
649 calcFunc-sqrt
650 frac))
651 (eq calc-language 'big)
652 ?0)))
653 (nextc (or (math-comp-first-char rhs)
654 (and (memq (car-safe nextt)
655 '(calcFunc-sqrt
656 calcFunc-sum
657 calcFunc-prod
658 calcFunc-integ))
659 (eq calc-language 'big)
660 ?0))))
661 (and prevc nextc
662 (or (and (>= nextc ?a) (<= nextc ?z))
663 (and (>= nextc ?A) (<= nextc ?Z))
664 (and (>= nextc ?0) (<= nextc ?9))
665 (memq nextc '(?. ?_ ?#
666 ?\( ?\[ ?\{))
667 (and (eq nextc ?\\)
668 (not (string-match
669 "\\`\\\\left("
670 (math-comp-first-string
671 rhs)))))
672 (not (and (eq (car-safe prevt) 'var)
673 (eq nextc ?\()))
674 (list 'horiz
675 (list 'set setlev 1)
676 lhs
677 (list 'break math-compose-level)
678 " "
679 rhs))))
680 (list 'horiz
681 (list 'set setlev 1)
682 lhs
683 (list 'break math-compose-level)
684 (if (or (equal (car op) "^")
685 (equal (car op) "_")
686 (equal (car op) "**")
687 (and (equal (car op) "*")
688 (math-comp-last-char lhs)
689 (math-comp-first-char rhs))
690 (and (equal (car op) "/")
691 (math-num-integerp (nth 1 a))
692 (math-integerp (nth 2 a))))
693 (car op)
694 (if (and (eq calc-language 'big)
695 (equal (car op) "=>"))
696 " => "
697 (concat " " (car op) " ")))
698 rhs))))))
699 ((and op (= (length a) 2) (= (nth 3 op) -1))
700 (cond
701 ((or (> prec (or (nth 4 op) (nth 2 op)))
702 (and (not (eq (assoc (car op) math-expr-opers) op))
703 (> prec 0))) ; don't write x% + y
ddaad609 704 (if (and (memq calc-language '(tex latex))
136211a9
EZ
705 (not (math-tex-expr-is-flat a)))
706 (list 'horiz "\\left( "
707 (math-compose-expr a -1)
708 " \\right)")
709 (if (eq calc-language 'eqn)
710 (if (= (/ prec 100) 9)
711 (list 'horiz "{" (math-compose-expr a -1) "}")
712 (if (math-tex-expr-is-flat a)
713 (list 'horiz "{( " (math-compose-expr a -1) " )}")
714 (list 'horiz "{left ( "
715 (math-compose-expr a -1)
716 " right )}")))
717 (list 'horiz "(" (math-compose-expr a 0) ")"))))
718 (t
719 (let ((lhs (math-compose-expr (nth 1 a) (nth 2 op))))
720 (list 'horiz
721 lhs
722 (if (or (> (length (car op)) 1)
723 (not (math-comp-is-flat lhs)))
724 (concat " " (car op))
725 (car op)))))))
726 ((and op (= (length a) 2) (= (nth 2 op) -1))
727 (cond
728 ((eq (nth 3 op) 0)
ddaad609 729 (let ((lr (and (memq calc-language '(tex latex))
136211a9
EZ
730 (not (math-tex-expr-is-flat (nth 1 a))))))
731 (list 'horiz
732 (if lr "\\left" "")
733 (if (string-match "\\`u\\([^a-zA-Z]\\)\\'" (car op))
734 (substring (car op) 1)
735 (car op))
736 (if (or lr (> (length (car op)) 2)) " " "")
737 (math-compose-expr (nth 1 a) -1)
738 (if (or lr (> (length (car op)) 2)) " " "")
739 (if lr "\\right" "")
740 (car (nth 1 (memq op math-expr-opers))))))
741 ((> prec (or (nth 4 op) (nth 3 op)))
ddaad609 742 (if (and (memq calc-language '(tex latex))
136211a9
EZ
743 (not (math-tex-expr-is-flat a)))
744 (list 'horiz "\\left( "
745 (math-compose-expr a -1)
746 " \\right)")
747 (if (eq calc-language 'eqn)
748 (if (= (/ prec 100) 9)
749 (list 'horiz "{" (math-compose-expr a -1) "}")
750 (if (math-tex-expr-is-flat a)
751 (list 'horiz "{( " (math-compose-expr a -1) " )}")
752 (list 'horiz "{left ( "
753 (math-compose-expr a -1)
754 " right )}")))
755 (list 'horiz "(" (math-compose-expr a 0) ")"))))
756 (t
757 (let ((rhs (math-compose-expr (nth 1 a) (nth 3 op))))
758 (list 'horiz
759 (let ((ops (if (string-match "\\`u\\([^a-zA-Z]\\)\\'"
760 (car op))
761 (substring (car op) 1)
762 (car op))))
763 (if (or (> (length ops) 1)
764 (not (math-comp-is-flat rhs)))
765 (concat ops " ")
766 ops))
767 rhs)))))
768 ((and (eq calc-language 'big)
769 (setq op (get (car a) 'math-compose-big))
770 (funcall op a prec)))
771 ((and (setq op (assq calc-language
772 '( ( nil . math-compose-normal )
773 ( flat . math-compose-normal )
774 ( big . math-compose-normal )
775 ( c . math-compose-c )
776 ( pascal . math-compose-pascal )
777 ( fortran . math-compose-fortran )
778 ( tex . math-compose-tex )
ddaad609 779 ( latex . math-compose-latex )
136211a9
EZ
780 ( eqn . math-compose-eqn )
781 ( math . math-compose-math )
782 ( maple . math-compose-maple ))))
783 (setq op (get (car a) (cdr op)))
784 (funcall op a prec)))
785 (t
786 (let* ((func (car a))
787 (func2 (assq func '(( mod . calcFunc-makemod )
788 ( sdev . calcFunc-sdev )
789 ( + . calcFunc-add )
790 ( - . calcFunc-sub )
791 ( * . calcFunc-mul )
792 ( / . calcFunc-div )
793 ( % . calcFunc-mod )
794 ( ^ . calcFunc-pow )
795 ( neg . calcFunc-neg )
796 ( | . calcFunc-vconcat ))))
797 left right args)
798 (if func2
799 (setq func (cdr func2)))
800 (if (setq func2 (rassq func math-expr-function-mapping))
801 (setq func (car func2)))
802 (setq func (math-remove-dashes
803 (if (string-match
804 "\\`calcFunc-\\([a-zA-Z0-9']+\\)\\'"
805 (symbol-name func))
806 (math-match-substring (symbol-name func) 1)
807 (symbol-name func))))
018f0ad2 808 (if (memq calc-language calc-lang-allow-underscores)
136211a9 809 (setq func (math-to-underscores func)))
018f0ad2
JB
810 (if (setq spfn (get calc-language 'math-func-formatter))
811 (funcall spfn func a)
812
813 (list 'horiz func calc-function-open
814 (math-compose-vector (cdr a) ", " 0)
815 calc-function-close))))))))))
136211a9 816
136211a9
EZ
817
818(defun math-prod-first-term (x)
819 (while (eq (car-safe x) '*)
820 (setq x (nth 1 x)))
bf77c646 821 x)
136211a9
EZ
822
823(defun math-prod-last-term (x)
824 (while (eq (car-safe x) '*)
825 (setq x (nth 2 x)))
bf77c646 826 x)
136211a9
EZ
827
828(defun math-compose-vector (a sep prec)
829 (if a
830 (cons 'horiz
831 (cons (list 'set math-compose-level)
832 (let ((c (list (math-compose-expr (car a) prec))))
833 (while (setq a (cdr a))
834 (setq c (cons (if (eq (car-safe (car a))
835 'calcFunc-bstring)
836 (let ((math-compose-level
837 (1- math-compose-level)))
838 (math-compose-expr (car a) -123))
839 (math-compose-expr (car a) prec))
840 (cons (list 'break math-compose-level)
841 (cons sep c)))))
842 (nreverse c))))
bf77c646 843 ""))
136211a9
EZ
844
845(defun math-vector-no-parens (a)
846 (or (cdr (cdr a))
bf77c646 847 (not (eq (car-safe (nth 1 a)) '*))))
136211a9
EZ
848
849(defun math-compose-matrix (a col cols base)
850 (let ((col 0)
851 (res nil))
852 (while (<= (setq col (1+ col)) cols)
fdcf8e2b 853 (setq res (cons (cons math-comp-just
136211a9
EZ
854 (cons base
855 (mapcar (function
856 (lambda (r)
857 (list 'horiz
858 (math-compose-expr
859 (nth col r)
fdcf8e2b 860 math-comp-vector-prec)
136211a9
EZ
861 (if (= col cols)
862 ""
fdcf8e2b
JB
863 (concat
864 math-comp-comma-spc " ")))))
136211a9
EZ
865 a)))
866 res)))
bf77c646 867 (nreverse res)))
136211a9
EZ
868
869(defun math-compose-rows (a count first)
870 (if (cdr a)
871 (if (<= count 0)
872 (if (< count 0)
873 (math-compose-rows (cdr a) -1 nil)
018f0ad2
JB
874 (cons (concat
875 (let ((mdots (get calc-language 'math-dots)))
876 (if mdots
877 (concat " " mdots)
878 " ..."))
879 math-comp-comma)
136211a9
EZ
880 (math-compose-rows (cdr a) -1 nil)))
881 (cons (list 'horiz
fdcf8e2b
JB
882 (if first (concat math-comp-left-bracket " ") " ")
883 (math-compose-expr (car a) math-comp-vector-prec)
884 math-comp-comma)
136211a9
EZ
885 (math-compose-rows (cdr a) (1- count) nil)))
886 (list (list 'horiz
fdcf8e2b
JB
887 (if first (concat math-comp-left-bracket " ") " ")
888 (math-compose-expr (car a) math-comp-vector-prec)
889 (concat " " math-comp-right-bracket)))))
136211a9 890
136211a9
EZ
891(defun math-vector-is-string (a)
892 (while (and (setq a (cdr a))
893 (or (and (natnump (car a))
894 (<= (car a) 255))
895 (and (eq (car-safe (car a)) 'cplx)
896 (natnump (nth 1 (car a)))
897 (eq (nth 2 (car a)) 0)
898 (<= (nth 1 (car a)) 255)))))
bf77c646 899 (null a))
136211a9 900
3132f345
CW
901(defconst math-vector-to-string-chars '( ( ?\" . "\\\"" )
902 ( ?\\ . "\\\\" )
903 ( ?\a . "\\a" )
904 ( ?\b . "\\b" )
905 ( ?\e . "\\e" )
906 ( ?\f . "\\f" )
907 ( ?\n . "\\n" )
908 ( ?\r . "\\r" )
909 ( ?\t . "\\t" )
910 ( ?\^? . "\\^?" )))
911
136211a9
EZ
912(defun math-vector-to-string (a &optional quoted)
913 (setq a (concat (mapcar (function (lambda (x) (if (consp x) (nth 1 x) x)))
914 (cdr a))))
915 (if (string-match "[\000-\037\177\\\"]" a)
916 (let ((p 0)
917 (pat (if quoted "[\000-\037\177\\\"]" "[\000-\037\177]"))
918 (codes (if quoted math-vector-to-string-chars '((?\^? . "^?"))))
919 (fmt (if quoted "\\^%c" "^%c"))
920 new)
921 (while (setq p (string-match pat a p))
922 (if (setq new (assq (aref a p) codes))
923 (setq a (concat (substring a 0 p)
924 (cdr new)
925 (substring a (1+ p)))
926 p (+ p (length (cdr new))))
927 (setq a (concat (substring a 0 p)
928 (format fmt (+ (aref a p) 64))
929 (substring a (1+ p)))
930 p (+ p 2))))))
931 (if quoted
932 (concat "\"" a "\"")
bf77c646 933 a))
3132f345 934
136211a9
EZ
935
936(defun math-to-underscores (x)
937 (if (string-match "\\`\\(.*\\)#\\(.*\\)\\'" x)
938 (math-to-underscores
939 (concat (math-match-substring x 1) "_" (math-match-substring x 2)))
bf77c646 940 x))
136211a9
EZ
941
942(defun math-tex-expr-is-flat (a)
943 (or (Math-integerp a)
944 (memq (car a) '(float var))
945 (and (memq (car a) '(+ - * neg))
946 (progn
947 (while (and (setq a (cdr a))
948 (math-tex-expr-is-flat (car a))))
949 (null a)))
950 (and (memq (car a) '(^ calcFunc-subscr))
bf77c646 951 (math-tex-expr-is-flat (nth 1 a)))))
136211a9
EZ
952
953(put 'calcFunc-log 'math-compose-big 'math-compose-log)
954(defun math-compose-log (a prec)
955 (and (= (length a) 3)
956 (list 'horiz
957 (list 'subscr "log"
958 (let ((calc-language 'flat))
959 (math-compose-expr (nth 2 a) 1000)))
960 "("
961 (math-compose-expr (nth 1 a) 1000)
bf77c646 962 ")")))
136211a9
EZ
963
964(put 'calcFunc-log10 'math-compose-big 'math-compose-log10)
965(defun math-compose-log10 (a prec)
966 (and (= (length a) 2)
967 (list 'horiz
968 (list 'subscr "log" "10")
969 "("
970 (math-compose-expr (nth 1 a) 1000)
bf77c646 971 ")")))
136211a9
EZ
972
973(put 'calcFunc-deriv 'math-compose-big 'math-compose-deriv)
974(put 'calcFunc-tderiv 'math-compose-big 'math-compose-deriv)
975(defun math-compose-deriv (a prec)
3132f345
CW
976 (when (= (length a) 3)
977 (math-compose-expr (list '/
978 (list 'calcFunc-choriz
979 (list 'vec
980 '(calcFunc-string (vec ?d))
981 (nth 1 a)))
982 (list 'calcFunc-choriz
983 (list 'vec
984 '(calcFunc-string (vec ?d))
985 (nth 2 a))))
986 prec)))
136211a9
EZ
987
988(put 'calcFunc-sqrt 'math-compose-big 'math-compose-sqrt)
989(defun math-compose-sqrt (a prec)
3132f345
CW
990 (when (= (length a) 2)
991 (let* ((c (math-compose-expr (nth 1 a) 0))
992 (a (math-comp-ascent c))
993 (d (math-comp-descent c))
994 (h (+ a d))
995 (w (math-comp-width c)))
996 (list 'vleft
997 a
998 (concat (if (= h 1) " " " ")
999 (make-string (+ w 2) ?\_))
1000 (list 'horiz
1001 (if (= h 1)
1002 "V"
1003 (append (list 'vleft (1- a))
1004 (make-list (1- h) " |")
1005 '("\\|")))
1006 " "
1007 c)))))
136211a9
EZ
1008
1009(put 'calcFunc-choose 'math-compose-big 'math-compose-choose)
1010(defun math-compose-choose (a prec)
1011 (let ((a1 (math-compose-expr (nth 1 a) 0))
1012 (a2 (math-compose-expr (nth 2 a) 0)))
1013 (list 'horiz
1014 "("
1015 (list 'vcent
1016 (math-comp-height a1)
1017 a1 " " a2)
bf77c646 1018 ")")))
136211a9
EZ
1019
1020(put 'calcFunc-integ 'math-compose-big 'math-compose-integ)
1021(defun math-compose-integ (a prec)
1022 (and (memq (length a) '(3 5))
1023 (eq (car-safe (nth 2 a)) 'var)
1024 (let* ((parens (and (>= prec 196) (/= prec 1000)))
1025 (var (math-compose-expr (nth 2 a) 0))
1026 (over (and (eq (car-safe (nth 2 a)) 'var)
1027 (or (and (eq (car-safe (nth 1 a)) '/)
1028 (math-numberp (nth 1 (nth 1 a))))
1029 (and (eq (car-safe (nth 1 a)) '^)
1030 (math-looks-negp (nth 2 (nth 1 a)))))))
1031 (expr (math-compose-expr (if over
1032 (math-mul (nth 1 a)
1033 (math-build-var-name
1034 (format
1035 "d%s"
1036 (nth 1 (nth 2 a)))))
1037 (nth 1 a)) 185))
1038 (calc-language 'flat)
1039 (low (and (nth 3 a) (math-compose-expr (nth 3 a) 0)))
1040 (high (and (nth 4 a) (math-compose-expr (nth 4 a) 0))))
1041 (list 'horiz
1042 (if parens "(" "")
1043 (append (list 'vcent (if high 3 2))
1044 (and high (list (list 'horiz " " high)))
1045 '(" /"
1046 " | "
1047 " | "
1048 " | "
1049 "/ ")
1050 (and low (list (list 'horiz low " "))))
1051 expr
1052 (if over
1053 ""
1054 (list 'horiz " d" var))
bf77c646 1055 (if parens ")" "")))))
136211a9
EZ
1056
1057(put 'calcFunc-sum 'math-compose-big 'math-compose-sum)
1058(defun math-compose-sum (a prec)
1059 (and (memq (length a) '(3 5 6))
1060 (let* ((expr (math-compose-expr (nth 1 a) 185))
1061 (calc-language 'flat)
1062 (var (math-compose-expr (nth 2 a) 0))
1063 (low (and (nth 3 a) (math-compose-expr (nth 3 a) 0)))
1064 (high (and (nth 4 a) (math-compose-vector (nthcdr 4 a) ", " 0))))
1065 (list 'horiz
1066 (if (memq prec '(180 201)) "(" "")
1067 (append (list 'vcent (if high 3 2))
1068 (and high (list high))
1069 '("---- "
1070 "\\ "
1071 " > "
1072 "/ "
1073 "---- ")
1074 (if low
1075 (list (list 'horiz var " = " low))
1076 (list var)))
1077 (if (memq (car-safe (nth 1 a)) '(calcFunc-sum calcFunc-prod))
1078 " " "")
1079 expr
bf77c646 1080 (if (memq prec '(180 201)) ")" "")))))
136211a9
EZ
1081
1082(put 'calcFunc-prod 'math-compose-big 'math-compose-prod)
1083(defun math-compose-prod (a prec)
1084 (and (memq (length a) '(3 5 6))
1085 (let* ((expr (math-compose-expr (nth 1 a) 198))
1086 (calc-language 'flat)
1087 (var (math-compose-expr (nth 2 a) 0))
1088 (low (and (nth 3 a) (math-compose-expr (nth 3 a) 0)))
1089 (high (and (nth 4 a) (math-compose-vector (nthcdr 4 a) ", " 0))))
1090 (list 'horiz
1091 (if (memq prec '(196 201)) "(" "")
1092 (append (list 'vcent (if high 3 2))
1093 (and high (list high))
1094 '("----- "
1095 " | | "
1096 " | | "
1097 " | | ")
1098 (if low
1099 (list (list 'horiz var " = " low))
1100 (list var)))
1101 (if (memq (car-safe (nth 1 a)) '(calcFunc-sum calcFunc-prod))
1102 " " "")
1103 expr
bf77c646 1104 (if (memq prec '(196 201)) ")" "")))))
136211a9 1105
fdcf8e2b
JB
1106;; The variables math-svo-c, math-svo-wid and math-svo-off are local
1107;; to math-stack-value-offset in calc.el, but are used by
1108;; math-stack-value-offset-fancy, which is called by math-stack-value-offset..
1109(defvar math-svo-c)
1110(defvar math-svo-wid)
1111(defvar math-svo-off)
136211a9
EZ
1112
1113(defun math-stack-value-offset-fancy ()
fdcf8e2b 1114 (let ((cwid (+ (math-comp-width math-svo-c))))
136211a9
EZ
1115 (cond ((eq calc-display-just 'right)
1116 (if calc-display-origin
fdcf8e2b 1117 (setq math-svo-wid (max calc-display-origin 5))
136211a9 1118 (if (integerp calc-line-breaking)
fdcf8e2b
JB
1119 (setq math-svo-wid calc-line-breaking)))
1120 (setq math-svo-off (- math-svo-wid cwid
136211a9
EZ
1121 (max (- (length calc-right-label)
1122 (if (and (integerp calc-line-breaking)
1123 calc-display-origin)
1124 (max (- calc-line-breaking
1125 calc-display-origin)
1126 0)
1127 0))
1128 0))))
1129 (t
1130 (if calc-display-origin
1131 (progn
fdcf8e2b 1132 (setq math-svo-off (- calc-display-origin (/ cwid 2)))
136211a9 1133 (if (integerp calc-line-breaking)
fdcf8e2b 1134 (setq math-svo-off (min math-svo-off (- calc-line-breaking cwid
136211a9 1135 (length calc-right-label)))))
fdcf8e2b
JB
1136 (if (>= math-svo-off 0)
1137 (setq math-svo-wid (max math-svo-wid (+ math-svo-off cwid)))))
136211a9 1138 (if (integerp calc-line-breaking)
fdcf8e2b
JB
1139 (setq math-svo-wid calc-line-breaking))
1140 (setq math-svo-off (/ (- math-svo-wid cwid) 2)))))
136211a9 1141 (and (integerp calc-line-breaking)
fdcf8e2b 1142 (or (< math-svo-off 0)
136211a9
EZ
1143 (and calc-display-origin
1144 (> calc-line-breaking calc-display-origin)))
fdcf8e2b 1145 (setq math-svo-wid calc-line-breaking))))
136211a9
EZ
1146
1147
1148;;; Convert a composition to string form, with embedded \n's if necessary.
1149
1150(defun math-composition-to-string (c &optional width)
1151 (or width (setq width (calc-window-width)))
1152 (if calc-display-raw
1153 (math-comp-to-string-raw c 0)
1154 (if (math-comp-is-flat c)
1155 (math-comp-to-string-flat c width)
1156 (math-vert-comp-to-string
bf77c646 1157 (math-comp-simplify c width)))))
136211a9 1158
3132f345
CW
1159(defvar math-comp-buf-string (make-vector 10 ""))
1160(defvar math-comp-buf-margin (make-vector 10 0))
1161(defvar math-comp-buf-level (make-vector 10 0))
136211a9
EZ
1162(defun math-comp-is-flat (c) ; check if c's height is 1.
1163 (cond ((not (consp c)) t)
1164 ((memq (car c) '(set break)) t)
1165 ((eq (car c) 'horiz)
1166 (while (and (setq c (cdr c))
1167 (math-comp-is-flat (car c))))
1168 (null c))
1169 ((memq (car c) '(vleft vcent vright))
1170 (and (= (length c) 3)
1171 (= (nth 1 c) 0)
1172 (math-comp-is-flat (nth 2 c))))
1173 ((eq (car c) 'tag)
1174 (math-comp-is-flat (nth 2 c)))
bf77c646 1175 (t nil)))
136211a9
EZ
1176
1177
1178;;; Convert a one-line composition to a string. Break into multiple
1179;;; lines if necessary, choosing break points according to the structure
1180;;; of the formula.
1181
fdcf8e2b
JB
1182;; The variables math-comp-full-width, math-comp-highlight, math-comp-word,
1183;; math-comp-level, math-comp-margin and math-comp-buf are local to
1184;; math-comp-to-string-flat, but are used by math-comp-to-string-flat-term,
1185;; which is called by math-comp-to-string-flat.
1186;; math-comp-highlight and math-comp-buf are also local to
1187;; math-comp-simplify-term and math-comp-simplify respectively, but are used
1188;; by math-comp-add-string.
1189(defvar math-comp-full-width)
1190(defvar math-comp-highlight)
1191(defvar math-comp-word)
1192(defvar math-comp-level)
1193(defvar math-comp-margin)
1194(defvar math-comp-buf)
1195;; The variable math-comp-pos is local to math-comp-to-string-flat, but
1196;; is used by math-comp-to-string-flat-term and math-comp-sel-first-term,
1197;; which are called by math-comp-to-string-flat.
1198(defvar math-comp-pos)
1199
1200(defun math-comp-to-string-flat (c math-comp-full-width)
136211a9 1201 (if math-comp-sel-hpos
fdcf8e2b 1202 (let ((math-comp-pos 0))
136211a9 1203 (math-comp-sel-flat-term c))
fdcf8e2b
JB
1204 (let ((math-comp-buf "")
1205 (math-comp-word "")
1206 (math-comp-pos 0)
1207 (math-comp-margin 0)
1208 (math-comp-highlight (and math-comp-selected calc-show-selections))
1209 (math-comp-level -1))
136211a9
EZ
1210 (math-comp-to-string-flat-term '(set -1 0))
1211 (math-comp-to-string-flat-term c)
1212 (math-comp-to-string-flat-term '(break -1))
1213 (let ((str (aref math-comp-buf-string 0))
1214 (prefix ""))
1215 (and (> (length str) 0) (= (aref str 0) ? )
fdcf8e2b
JB
1216 (> (length math-comp-buf) 0)
1217 (let ((k (length math-comp-buf)))
1218 (while (not (= (aref math-comp-buf (setq k (1- k))) ?\n)))
1219 (aset math-comp-buf k ? )
1220 (if (and (< (1+ k) (length math-comp-buf))
1221 (= (aref math-comp-buf (1+ k)) ? ))
136211a9 1222 (progn
fdcf8e2b 1223 (aset math-comp-buf (1+ k) ?\n)
136211a9
EZ
1224 (setq prefix " "))
1225 (setq prefix "\n"))))
fdcf8e2b 1226 (concat math-comp-buf prefix str)))))
136211a9
EZ
1227
1228(defun math-comp-to-string-flat-term (c)
1229 (cond ((not (consp c))
fdcf8e2b 1230 (if math-comp-highlight
136211a9 1231 (setq c (math-comp-highlight-string c)))
fdcf8e2b
JB
1232 (setq math-comp-word (if (= (length math-comp-word) 0) c
1233 (concat math-comp-word c))
1234 math-comp-pos (+ math-comp-pos (length c))))
136211a9
EZ
1235
1236 ((eq (car c) 'horiz)
1237 (while (setq c (cdr c))
1238 (math-comp-to-string-flat-term (car c))))
1239
1240 ((eq (car c) 'set)
1241 (if (nth 1 c)
1242 (progn
fdcf8e2b
JB
1243 (setq math-comp-level (1+ math-comp-level))
1244 (if (>= math-comp-level (length math-comp-buf-string))
136211a9
EZ
1245 (setq math-comp-buf-string (vconcat math-comp-buf-string
1246 math-comp-buf-string)
1247 math-comp-buf-margin (vconcat math-comp-buf-margin
1248 math-comp-buf-margin)
1249 math-comp-buf-level (vconcat math-comp-buf-level
1250 math-comp-buf-level)))
fdcf8e2b
JB
1251 (aset math-comp-buf-string math-comp-level "")
1252 (aset math-comp-buf-margin math-comp-level (+ math-comp-pos
136211a9 1253 (or (nth 2 c) 0)))
fdcf8e2b 1254 (aset math-comp-buf-level math-comp-level (nth 1 c)))))
136211a9
EZ
1255
1256 ((eq (car c) 'break)
1257 (if (not calc-line-breaking)
fdcf8e2b
JB
1258 (setq math-comp-buf (concat math-comp-buf math-comp-word)
1259 math-comp-word "")
136211a9 1260 (let ((i 0) str)
fdcf8e2b 1261 (if (and (> math-comp-pos math-comp-full-width)
136211a9
EZ
1262 (progn
1263 (while (progn
1264 (setq str (aref math-comp-buf-string i))
fdcf8e2b 1265 (and (= (length str) 0) (< i math-comp-level)))
136211a9 1266 (setq i (1+ i)))
fdcf8e2b 1267 (or (> (length str) 0) (> (length math-comp-buf) 0))))
136211a9
EZ
1268 (let ((prefix "") mrg wid)
1269 (setq mrg (aref math-comp-buf-margin i))
1270 (if (> mrg 12) ; indenting too far, go back to far left
1271 (let ((j i) (new (if calc-line-numbering 5 1)))
fdcf8e2b 1272 '(while (<= j math-comp-level)
136211a9
EZ
1273 (aset math-comp-buf-margin j
1274 (+ (aref math-comp-buf-margin j) (- new mrg)))
1275 (setq j (1+ j)))
1276 (setq mrg new)))
fdcf8e2b 1277 (setq wid (+ (length str) math-comp-margin))
136211a9 1278 (and (> (length str) 0) (= (aref str 0) ? )
fdcf8e2b
JB
1279 (> (length math-comp-buf) 0)
1280 (let ((k (length math-comp-buf)))
1281 (while (not (= (aref math-comp-buf (setq k (1- k))) ?\n)))
1282 (aset math-comp-buf k ? )
1283 (if (and (< (1+ k) (length math-comp-buf))
1284 (= (aref math-comp-buf (1+ k)) ? ))
136211a9 1285 (progn
fdcf8e2b 1286 (aset math-comp-buf (1+ k) ?\n)
136211a9
EZ
1287 (setq prefix " "))
1288 (setq prefix "\n"))))
fdcf8e2b 1289 (setq math-comp-buf (concat math-comp-buf prefix str "\n"
136211a9 1290 (make-string mrg ? ))
fdcf8e2b
JB
1291 math-comp-pos (+ math-comp-pos (- mrg wid))
1292 math-comp-margin mrg)
136211a9 1293 (aset math-comp-buf-string i "")
fdcf8e2b 1294 (while (<= (setq i (1+ i)) math-comp-level)
136211a9
EZ
1295 (if (> (aref math-comp-buf-margin i) wid)
1296 (aset math-comp-buf-margin i
1297 (+ (aref math-comp-buf-margin i)
1298 (- mrg wid))))))))
fdcf8e2b
JB
1299 (if (and (= (nth 1 c) (aref math-comp-buf-level math-comp-level))
1300 (< math-comp-pos (+ (aref math-comp-buf-margin math-comp-level) 2)))
136211a9 1301 () ; avoid stupid breaks, e.g., "1 +\n really_long_expr"
fdcf8e2b 1302 (let ((str (aref math-comp-buf-string math-comp-level)))
136211a9 1303 (setq str (if (= (length str) 0)
fdcf8e2b
JB
1304 math-comp-word
1305 (concat str math-comp-word))
1306 math-comp-word "")
1307 (while (< (nth 1 c) (aref math-comp-buf-level math-comp-level))
1308 (setq math-comp-level (1- math-comp-level))
1309 (or (= (length (aref math-comp-buf-string math-comp-level)) 0)
1310 (setq str (concat (aref math-comp-buf-string math-comp-level)
136211a9 1311 str))))
fdcf8e2b 1312 (aset math-comp-buf-string math-comp-level str)))))
136211a9
EZ
1313
1314 ((eq (car c) 'tag)
1315 (cond ((eq (nth 1 c) math-comp-selected)
fdcf8e2b 1316 (let ((math-comp-highlight (not calc-show-selections)))
136211a9
EZ
1317 (math-comp-to-string-flat-term (nth 2 c))))
1318 ((eq (nth 1 c) t)
fdcf8e2b 1319 (let ((math-comp-highlight nil))
136211a9
EZ
1320 (math-comp-to-string-flat-term (nth 2 c))))
1321 (t (math-comp-to-string-flat-term (nth 2 c)))))
1322
bf77c646 1323 (t (math-comp-to-string-flat-term (nth 2 c)))))
136211a9
EZ
1324
1325(defun math-comp-highlight-string (s)
1326 (setq s (copy-sequence s))
1327 (let ((i (length s)))
1328 (while (>= (setq i (1- i)) 0)
1329 (or (memq (aref s i) '(32 ?\n))
1330 (aset s i (if calc-show-selections ?\. ?\#)))))
bf77c646 1331 s)
136211a9 1332
fdcf8e2b
JB
1333
1334;; The variable math-comp-sel-tag is local to calc-find-selected-part
1335;; in calc-sel.el, but is used by math-comp-sel-flat-term and
1336;; math-comp-add-string-sel, which are called (indirectly) by
1337;; calc-find-selected-part.
1338(defvar math-comp-sel-tag)
1339
136211a9
EZ
1340(defun math-comp-sel-flat-term (c)
1341 (cond ((not (consp c))
fdcf8e2b 1342 (setq math-comp-pos (+ math-comp-pos (length c))))
136211a9
EZ
1343 ((memq (car c) '(set break)))
1344 ((eq (car c) 'horiz)
1345 (while (and (setq c (cdr c)) (< math-comp-sel-cpos 1000000))
1346 (math-comp-sel-flat-term (car c))))
1347 ((eq (car c) 'tag)
fdcf8e2b 1348 (if (<= math-comp-pos math-comp-sel-cpos)
136211a9
EZ
1349 (progn
1350 (math-comp-sel-flat-term (nth 2 c))
fdcf8e2b 1351 (if (> math-comp-pos math-comp-sel-cpos)
136211a9
EZ
1352 (setq math-comp-sel-tag c
1353 math-comp-sel-cpos 1000000)))
1354 (math-comp-sel-flat-term (nth 2 c))))
bf77c646 1355 (t (math-comp-sel-flat-term (nth 2 c)))))
136211a9
EZ
1356
1357
1358;;; Simplify a composition to a canonical form consisting of
1359;;; (vleft n "string" "string" "string" ...)
1360;;; where 0 <= n < number-of-strings.
1361
fdcf8e2b
JB
1362;; The variables math-comp-base, math-comp-hgt, math-comp-tag,
1363;; math-comp-hpos and math-comp-vpos are local to math-comp-simplify,
1364;; but are used by math-comp-add-string (math-comp-base, math-comp-hgt),
1365;; math-comp-add-string-sel (math-comp-tag) and math-comp-simplify-term
1366;; (math-comp-tag, math-comp-vpos, math-comp-hpos), which are called by
1367;; math-comp-simplify.
1368(defvar math-comp-base)
1369(defvar math-comp-hgt)
1370(defvar math-comp-tag)
1371(defvar math-comp-hpos)
1372(defvar math-comp-vpos)
1373
136211a9 1374(defun math-comp-simplify (c full-width)
fdcf8e2b
JB
1375 (let ((math-comp-buf (list ""))
1376 (math-comp-base 0)
1377 (math-comp-hgt 1)
1378 (math-comp-hpos 0)
1379 (math-comp-vpos 0)
1380 (math-comp-highlight (and math-comp-selected calc-show-selections))
1381 (math-comp-tag nil))
136211a9 1382 (math-comp-simplify-term c)
fdcf8e2b 1383 (cons 'vleft (cons math-comp-base math-comp-buf))))
136211a9
EZ
1384
1385(defun math-comp-add-string (s h v)
1386 (and (> (length s) 0)
fdcf8e2b 1387 (let ((vv (+ v math-comp-base)))
136211a9
EZ
1388 (if math-comp-sel-hpos
1389 (math-comp-add-string-sel h vv (length s) 1)
1390 (if (< vv 0)
fdcf8e2b
JB
1391 (setq math-comp-buf (nconc (make-list (- vv) "") math-comp-buf)
1392 math-comp-base (- v)
1393 math-comp-hgt (- math-comp-hgt vv)
136211a9 1394 vv 0)
fdcf8e2b
JB
1395 (if (>= vv math-comp-hgt)
1396 (setq math-comp-buf (nconc math-comp-buf
1397 (make-list (1+ (- vv math-comp-hgt)) ""))
1398 math-comp-hgt (1+ vv))))
1399 (let ((str (nthcdr vv math-comp-buf)))
136211a9
EZ
1400 (setcar str (concat (car str)
1401 (make-string (- h (length (car str))) 32)
fdcf8e2b 1402 (if math-comp-highlight
136211a9 1403 (math-comp-highlight-string s)
bf77c646 1404 s))))))))
136211a9
EZ
1405
1406(defun math-comp-add-string-sel (x y w h)
1407 (if (and (<= y math-comp-sel-vpos)
1408 (> (+ y h) math-comp-sel-vpos)
1409 (<= x math-comp-sel-hpos)
1410 (> (+ x w) math-comp-sel-hpos))
fdcf8e2b 1411 (setq math-comp-sel-tag math-comp-tag
bf77c646 1412 math-comp-sel-vpos 10000)))
136211a9
EZ
1413
1414(defun math-comp-simplify-term (c)
1415 (cond ((stringp c)
fdcf8e2b
JB
1416 (math-comp-add-string c math-comp-hpos math-comp-vpos)
1417 (setq math-comp-hpos (+ math-comp-hpos (length c))))
136211a9
EZ
1418 ((memq (car c) '(set break))
1419 nil)
1420 ((eq (car c) 'horiz)
1421 (while (setq c (cdr c))
1422 (math-comp-simplify-term (car c))))
1423 ((memq (car c) '(vleft vcent vright))
fdcf8e2b 1424 (let* ((math-comp-vpos (+ (- math-comp-vpos (nth 1 c))
136211a9
EZ
1425 (1- (math-comp-ascent (nth 2 c)))))
1426 (widths (mapcar 'math-comp-width (cdr (cdr c))))
1427 (maxwid (apply 'max widths))
1428 (bias (cond ((eq (car c) 'vleft) 0)
1429 ((eq (car c) 'vcent) 1)
1430 (t 2))))
1431 (setq c (cdr c))
1432 (while (setq c (cdr c))
1433 (if (eq (car-safe (car c)) 'rule)
1434 (math-comp-add-string (make-string maxwid (nth 1 (car c)))
fdcf8e2b
JB
1435 math-comp-hpos math-comp-vpos)
1436 (let ((math-comp-hpos (+ math-comp-hpos (/ (* bias (- maxwid
136211a9
EZ
1437 (car widths)))
1438 2))))
1439 (math-comp-simplify-term (car c))))
1440 (and (cdr c)
fdcf8e2b 1441 (setq math-comp-vpos (+ math-comp-vpos
136211a9
EZ
1442 (+ (math-comp-descent (car c))
1443 (math-comp-ascent (nth 1 c))))
1444 widths (cdr widths))))
fdcf8e2b 1445 (setq math-comp-hpos (+ math-comp-hpos maxwid))))
136211a9
EZ
1446 ((eq (car c) 'supscr)
1447 (let* ((asc (or 1 (math-comp-ascent (nth 1 c))))
1448 (desc (math-comp-descent (nth 2 c)))
1449 (oldh (prog1
fdcf8e2b 1450 math-comp-hpos
136211a9 1451 (math-comp-simplify-term (nth 1 c))))
fdcf8e2b 1452 (math-comp-vpos (- math-comp-vpos (+ asc desc))))
136211a9
EZ
1453 (math-comp-simplify-term (nth 2 c))
1454 (if math-comp-sel-hpos
1455 (math-comp-add-string-sel oldh
fdcf8e2b 1456 (- math-comp-vpos
136211a9
EZ
1457 -1
1458 (math-comp-ascent (nth 2 c)))
fdcf8e2b 1459 (- math-comp-hpos oldh)
136211a9
EZ
1460 (math-comp-height c)))))
1461 ((eq (car c) 'subscr)
1462 (let* ((asc (math-comp-ascent (nth 2 c)))
1463 (desc (math-comp-descent (nth 1 c)))
fdcf8e2b 1464 (oldv math-comp-vpos)
136211a9 1465 (oldh (prog1
fdcf8e2b 1466 math-comp-hpos
136211a9 1467 (math-comp-simplify-term (nth 1 c))))
fdcf8e2b 1468 (math-comp-vpos (+ math-comp-vpos (+ asc desc))))
136211a9
EZ
1469 (math-comp-simplify-term (nth 2 c))
1470 (if math-comp-sel-hpos
1471 (math-comp-add-string-sel oldh oldv
fdcf8e2b 1472 (- math-comp-hpos oldh)
136211a9
EZ
1473 (math-comp-height c)))))
1474 ((eq (car c) 'tag)
1475 (cond ((eq (nth 1 c) math-comp-selected)
fdcf8e2b 1476 (let ((math-comp-highlight (not calc-show-selections)))
136211a9
EZ
1477 (math-comp-simplify-term (nth 2 c))))
1478 ((eq (nth 1 c) t)
fdcf8e2b 1479 (let ((math-comp-highlight nil))
136211a9 1480 (math-comp-simplify-term (nth 2 c))))
fdcf8e2b 1481 (t (let ((math-comp-tag c))
bf77c646 1482 (math-comp-simplify-term (nth 2 c))))))))
136211a9
EZ
1483
1484
1485;;; Measuring a composition.
1486
1487(defun math-comp-first-char (c)
1488 (cond ((stringp c)
1489 (and (> (length c) 0)
1490 (elt c 0)))
1491 ((memq (car c) '(horiz subscr supscr))
1492 (while (and (setq c (cdr c))
1493 (math-comp-is-null (car c))))
1494 (and c (math-comp-first-char (car c))))
1495 ((eq (car c) 'tag)
bf77c646 1496 (math-comp-first-char (nth 2 c)))))
136211a9
EZ
1497
1498(defun math-comp-first-string (c)
1499 (cond ((stringp c)
1500 (and (> (length c) 0)
1501 c))
1502 ((eq (car c) 'horiz)
1503 (while (and (setq c (cdr c))
1504 (math-comp-is-null (car c))))
1505 (and c (math-comp-first-string (car c))))
1506 ((eq (car c) 'tag)
bf77c646 1507 (math-comp-first-string (nth 2 c)))))
136211a9
EZ
1508
1509(defun math-comp-last-char (c)
1510 (cond ((stringp c)
1511 (and (> (length c) 0)
1512 (elt c (1- (length c)))))
1513 ((eq (car c) 'horiz)
1514 (let ((c (reverse (cdr c))))
1515 (while (and c (math-comp-is-null (car c)))
1516 (setq c (cdr c)))
1517 (and c (math-comp-last-char (car c)))))
1518 ((eq (car c) 'tag)
bf77c646 1519 (math-comp-last-char (nth 2 c)))))
136211a9
EZ
1520
1521(defun math-comp-is-null (c)
1522 (cond ((stringp c) (= (length c) 0))
1523 ((memq (car c) '(horiz subscr supscr))
1524 (while (and (setq c (cdr c))
1525 (math-comp-is-null (car c))))
1526 (null c))
1527 ((eq (car c) 'tag)
1528 (math-comp-is-null (nth 2 c)))
bf77c646 1529 ((memq (car c) '(set break)) t)))
136211a9
EZ
1530
1531(defun math-comp-width (c)
1532 (cond ((not (consp c)) (length c))
1533 ((memq (car c) '(horiz subscr supscr))
1534 (let ((accum 0))
1535 (while (setq c (cdr c))
1536 (setq accum (+ accum (math-comp-width (car c)))))
1537 accum))
1538 ((memq (car c) '(vcent vleft vright))
1539 (setq c (cdr c))
1540 (let ((accum 0))
1541 (while (setq c (cdr c))
1542 (setq accum (max accum (math-comp-width (car c)))))
1543 accum))
1544 ((eq (car c) 'tag)
1545 (math-comp-width (nth 2 c)))
bf77c646 1546 (t 0)))
136211a9
EZ
1547
1548(defun math-comp-height (c)
1549 (if (stringp c)
1550 1
bf77c646 1551 (+ (math-comp-ascent c) (math-comp-descent c))))
136211a9
EZ
1552
1553(defun math-comp-ascent (c)
1554 (cond ((not (consp c)) 1)
1555 ((eq (car c) 'horiz)
1556 (let ((accum 0))
1557 (while (setq c (cdr c))
1558 (setq accum (max accum (math-comp-ascent (car c)))))
1559 accum))
1560 ((memq (car c) '(vcent vleft vright))
1561 (if (> (nth 1 c) 0) (1+ (nth 1 c)) 1))
1562 ((eq (car c) 'supscr)
1563 (max (math-comp-ascent (nth 1 c)) (1+ (math-comp-height (nth 2 c)))))
1564 ((eq (car c) 'subscr)
1565 (math-comp-ascent (nth 1 c)))
1566 ((eq (car c) 'tag)
1567 (math-comp-ascent (nth 2 c)))
bf77c646 1568 (t 1)))
136211a9
EZ
1569
1570(defun math-comp-descent (c)
1571 (cond ((not (consp c)) 0)
1572 ((eq (car c) 'horiz)
1573 (let ((accum 0))
1574 (while (setq c (cdr c))
1575 (setq accum (max accum (math-comp-descent (car c)))))
1576 accum))
1577 ((memq (car c) '(vcent vleft vright))
1578 (let ((accum (- (nth 1 c))))
1579 (setq c (cdr c))
1580 (while (setq c (cdr c))
1581 (setq accum (+ accum (math-comp-height (car c)))))
1582 (max (1- accum) 0)))
1583 ((eq (car c) 'supscr)
1584 (math-comp-descent (nth 1 c)))
1585 ((eq (car c) 'subscr)
1586 (+ (math-comp-descent (nth 1 c)) (math-comp-height (nth 2 c))))
1587 ((eq (car c) 'tag)
1588 (math-comp-descent (nth 2 c)))
bf77c646 1589 (t 0)))
136211a9
EZ
1590
1591(defun calcFunc-cwidth (a &optional prec)
1592 (if (and prec (not (integerp prec))) (math-reject-arg prec 'fixnump))
bf77c646 1593 (math-comp-width (math-compose-expr a (or prec 0))))
136211a9
EZ
1594
1595(defun calcFunc-cheight (a &optional prec)
1596 (if (and prec (not (integerp prec))) (math-reject-arg prec 'fixnump))
1597 (if (and (memq (car a) '(calcFunc-cvspace calcFunc-ctspace calcFunc-cbspace))
1598 (memq (length a) '(2 3))
1599 (eq (nth 1 a) 0))
1600 0
bf77c646 1601 (math-comp-height (math-compose-expr a (or prec 0)))))
136211a9
EZ
1602
1603(defun calcFunc-cascent (a &optional prec)
1604 (if (and prec (not (integerp prec))) (math-reject-arg prec 'fixnump))
1605 (if (and (memq (car a) '(calcFunc-cvspace calcFunc-ctspace calcFunc-cbspace))
1606 (memq (length a) '(2 3))
1607 (eq (nth 1 a) 0))
1608 0
bf77c646 1609 (math-comp-ascent (math-compose-expr a (or prec 0)))))
136211a9
EZ
1610
1611(defun calcFunc-cdescent (a &optional prec)
1612 (if (and prec (not (integerp prec))) (math-reject-arg prec 'fixnump))
bf77c646 1613 (math-comp-descent (math-compose-expr a (or prec 0))))
136211a9
EZ
1614
1615
1616;;; Convert a simplified composition into string form.
1617
1618(defun math-vert-comp-to-string (c)
1619 (if (stringp c)
1620 c
bf77c646 1621 (math-vert-comp-to-string-step (cdr (cdr c)))))
136211a9
EZ
1622
1623(defun math-vert-comp-to-string-step (c)
1624 (if (cdr c)
1625 (concat (car c) "\n" (math-vert-comp-to-string-step (cdr c)))
bf77c646 1626 (car c)))
136211a9
EZ
1627
1628
1629;;; Convert a composition to a string in "raw" form (for debugging).
1630
1631(defun math-comp-to-string-raw (c indent)
1632 (cond ((or (not (consp c)) (eq (car c) 'set))
1633 (prin1-to-string c))
1634 ((null (cdr c))
1635 (concat "(" (symbol-name (car c)) ")"))
1636 (t
1637 (let ((next-indent (+ indent 2 (length (symbol-name (car c))))))
1638 (concat "("
1639 (symbol-name (car c))
1640 " "
1641 (math-comp-to-string-raw (nth 1 c) next-indent)
1642 (math-comp-to-string-raw-step (cdr (cdr c))
1643 next-indent)
bf77c646 1644 ")")))))
136211a9
EZ
1645
1646(defun math-comp-to-string-raw-step (cl indent)
1647 (if cl
1648 (concat "\n"
1649 (make-string indent 32)
1650 (math-comp-to-string-raw (car cl) indent)
1651 (math-comp-to-string-raw-step (cdr cl) indent))
bf77c646 1652 ""))
136211a9 1653
cfd31ee4
JB
1654(provide 'calccomp)
1655
ab5796a9 1656;;; arch-tag: 7c45d10a-a286-4dab-af49-7ae8989fbf78
bf77c646 1657;;; calccomp.el ends here