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1 | ;;; calc-stuff.el --- miscellaneous functions for Calc |
2 | ||
ba318903 | 3 | ;; Copyright (C) 1990-1993, 2001-2014 Free Software Foundation, Inc. |
3132f345 CW |
4 | |
5 | ;; Author: David Gillespie <daveg@synaptics.com> | |
e8fff8ed | 6 | ;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com> |
136211a9 EZ |
7 | |
8 | ;; This file is part of GNU Emacs. | |
9 | ||
662c9c64 | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
7c671b23 | 11 | ;; it under the terms of the GNU General Public License as published by |
662c9c64 GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
7c671b23 | 14 | |
136211a9 | 15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
7c671b23 GM |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
662c9c64 | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
136211a9 | 22 | |
3132f345 | 23 | ;;; Commentary: |
136211a9 | 24 | |
3132f345 | 25 | ;;; Code: |
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26 | |
27 | ;; This file is autoloaded from calc-ext.el. | |
136211a9 | 28 | |
a2e360d6 | 29 | (require 'calc-ext) |
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30 | (require 'calc-macs) |
31 | ||
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32 | (defun calc-num-prefix (n) |
33 | "Use the number at the top of stack as the numeric prefix for the next command. | |
34 | With a prefix, push that prefix as a number onto the stack." | |
35 | (interactive "P") | |
36 | (calc-wrapper | |
37 | (if n | |
38 | (calc-enter-result 0 "" (prefix-numeric-value n)) | |
39 | (let ((num (calc-top 1))) | |
40 | (if (math-messy-integerp num) | |
41 | (setq num (math-trunc num))) | |
42 | (or (integerp num) | |
43 | (error "Argument must be a small integer")) | |
44 | (calc-pop-stack 1) | |
45 | (setq prefix-arg num) | |
bf77c646 | 46 | (message "%d-" num))))) ; a (lame) simulation of the real thing... |
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47 | |
48 | ||
49 | (defun calc-more-recursion-depth (n) | |
50 | (interactive "P") | |
51 | (calc-wrapper | |
52 | (if (calc-is-inverse) | |
53 | (calc-less-recursion-depth n) | |
54 | (let ((n (if n (prefix-numeric-value n) 2))) | |
55 | (if (> n 1) | |
56 | (setq max-specpdl-size (* max-specpdl-size n) | |
57 | max-lisp-eval-depth (* max-lisp-eval-depth n)))) | |
bf77c646 | 58 | (message "max-lisp-eval-depth is now %d" max-lisp-eval-depth)))) |
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59 | |
60 | (defun calc-less-recursion-depth (n) | |
61 | (interactive "P") | |
62 | (let ((n (if n (prefix-numeric-value n) 2))) | |
63 | (if (> n 1) | |
64 | (setq max-specpdl-size | |
65 | (max (/ max-specpdl-size n) 600) | |
66 | max-lisp-eval-depth | |
67 | (max (/ max-lisp-eval-depth n) 200)))) | |
bf77c646 | 68 | (message "max-lisp-eval-depth is now %d" max-lisp-eval-depth)) |
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69 | |
70 | ||
3132f345 CW |
71 | (defvar calc-which-why nil) |
72 | (defvar calc-last-why-command nil) | |
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73 | (defun calc-explain-why (why &optional more) |
74 | (if (eq (car why) '*) | |
75 | (setq why (cdr why))) | |
76 | (let* ((pred (car why)) | |
77 | (arg (nth 1 why)) | |
78 | (msg (cond ((not pred) "Wrong type of argument") | |
79 | ((stringp pred) pred) | |
80 | ((eq pred 'integerp) "Integer expected") | |
81 | ((eq pred 'natnump) | |
82 | (if (and arg (Math-objvecp arg) (not (Math-integerp arg))) | |
83 | "Integer expected" | |
84 | "Nonnegative integer expected")) | |
85 | ((eq pred 'posintp) | |
86 | (if (and arg (Math-objvecp arg) (not (Math-integerp arg))) | |
87 | "Integer expected" | |
88 | "Positive integer expected")) | |
89 | ((eq pred 'fixnump) | |
90 | (if (and arg (Math-integerp arg)) | |
91 | "Small integer expected" | |
92 | "Integer expected")) | |
93 | ((eq pred 'fixnatnump) | |
94 | (if (and arg (Math-natnump arg)) | |
95 | "Small integer expected" | |
96 | (if (and arg (Math-objvecp arg) | |
97 | (not (Math-integerp arg))) | |
98 | "Integer expected" | |
99 | "Nonnegative integer expected"))) | |
100 | ((eq pred 'fixposintp) | |
101 | (if (and arg (Math-integerp arg) (Math-posp arg)) | |
102 | "Small integer expected" | |
103 | (if (and arg (Math-objvecp arg) | |
104 | (not (Math-integerp arg))) | |
105 | "Integer expected" | |
106 | "Positive integer expected"))) | |
107 | ((eq pred 'posp) "Positive number expected") | |
108 | ((eq pred 'negp) "Negative number expected") | |
109 | ((eq pred 'nonzerop) "Nonzero number expected") | |
110 | ((eq pred 'realp) "Real number expected") | |
111 | ((eq pred 'anglep) "Real number expected") | |
112 | ((eq pred 'hmsp) "HMS form expected") | |
113 | ((eq pred 'datep) | |
114 | (if (and arg (Math-objectp arg) | |
115 | (not (Math-realp arg))) | |
116 | "Real number or date form expected" | |
117 | "Date form expected")) | |
118 | ((eq pred 'numberp) "Number expected") | |
119 | ((eq pred 'scalarp) "Number expected") | |
120 | ((eq pred 'vectorp) "Vector or matrix expected") | |
121 | ((eq pred 'numvecp) "Number or vector expected") | |
122 | ((eq pred 'matrixp) "Matrix expected") | |
123 | ((eq pred 'square-matrixp) | |
124 | (if (and arg (math-matrixp arg)) | |
125 | "Square matrix expected" | |
126 | "Matrix expected")) | |
127 | ((eq pred 'objectp) "Number expected") | |
128 | ((eq pred 'constp) "Constant expected") | |
129 | ((eq pred 'range) "Argument out of range") | |
130 | (t (format "%s expected" pred)))) | |
131 | (punc ": ") | |
132 | (calc-can-abbrev-vectors t)) | |
133 | (while (setq why (cdr why)) | |
134 | (and (car why) | |
135 | (setq msg (concat msg punc (if (stringp (car why)) | |
136 | (car why) | |
137 | (math-format-flat-expr (car why) 0))) | |
138 | punc ", "))) | |
bf77c646 | 139 | (message "%s%s" msg (if more " [w=more]" "")))) |
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140 | |
141 | (defun calc-why () | |
142 | (interactive) | |
143 | (if (not (eq this-command last-command)) | |
144 | (if (eq last-command calc-last-why-command) | |
145 | (setq calc-which-why (cdr calc-why)) | |
146 | (setq calc-which-why calc-why))) | |
147 | (if calc-which-why | |
148 | (progn | |
149 | (calc-explain-why (car calc-which-why) (cdr calc-which-why)) | |
150 | (setq calc-which-why (cdr calc-which-why))) | |
151 | (if calc-why | |
152 | (progn | |
153 | (message "(No further explanations available)") | |
154 | (setq calc-which-why calc-why)) | |
bf77c646 | 155 | (message "No explanations available")))) |
136211a9 | 156 | |
32bac5ed JB |
157 | ;; The following caches are declared in other files, but are |
158 | ;; reset here. | |
159 | (defvar math-lud-cache) ; calc-mtx.el | |
160 | (defvar math-log2-cache) ; calc-bin.el | |
161 | (defvar math-radix-digits-cache) ; calc-bin.el | |
162 | (defvar math-radix-float-cache-tag) ; calc-bin.el | |
163 | (defvar math-random-cache) ; calc-comb.el | |
164 | (defvar math-max-digits-cache) ; calc-bin.el | |
165 | (defvar math-integral-cache) ; calcalg2.el | |
166 | (defvar math-units-table) ; calc-units.el | |
e206ee4c | 167 | (defvar math-decls-cache-tag) ; calc-arith.el |
32bac5ed JB |
168 | (defvar math-format-date-cache) ; calc-forms.el |
169 | (defvar math-holidays-cache-tag) ; calc-forms.el | |
136211a9 | 170 | |
9b08ce78 CW |
171 | (defun calc-flush-caches (&optional inhibit-msg) |
172 | (interactive "P") | |
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173 | (calc-wrapper |
174 | (setq math-lud-cache nil | |
175 | math-log2-cache nil | |
176 | math-radix-digits-cache nil | |
177 | math-radix-float-cache-tag nil | |
178 | math-random-cache nil | |
179 | math-max-digits-cache nil | |
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180 | math-integral-cache nil |
181 | math-units-table nil | |
182 | math-decls-cache-tag nil | |
183 | math-eval-rules-cache-tag t | |
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184 | math-format-date-cache nil |
185 | math-holidays-cache-tag t) | |
4d2a9fe4 | 186 | (mapc (function (lambda (x) (set x -100))) math-cache-list) |
9b08ce78 CW |
187 | (unless inhibit-msg |
188 | (message "All internal calculator caches have been reset")))) | |
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189 | |
190 | ||
191 | ;;; Conversions. | |
192 | ||
193 | (defun calc-clean (n) | |
194 | (interactive "P") | |
195 | (calc-slow-wrapper | |
196 | (calc-with-default-simplification | |
197 | (let ((func (if (calc-is-hyperbolic) 'calcFunc-clean 'calcFunc-pclean))) | |
198 | (calc-enter-result 1 "cln" | |
199 | (if n | |
200 | (let ((n (prefix-numeric-value n))) | |
201 | (list func | |
202 | (calc-top-n 1) | |
203 | (if (<= n 0) | |
204 | (+ n calc-internal-prec) | |
205 | n))) | |
bf77c646 | 206 | (list func (calc-top-n 1)))))))) |
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207 | |
208 | (defun calc-clean-num (num) | |
209 | (interactive "P") | |
210 | (calc-clean (- (if num | |
a1506d29 | 211 | (prefix-numeric-value num) |
e93c003e GM |
212 | (if (and (>= last-command-event ?0) |
213 | (<= last-command-event ?9)) | |
214 | (- last-command-event ?0) | |
bf77c646 | 215 | (error "Number required")))))) |
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216 | |
217 | ||
3132f345 | 218 | (defvar math-chopping-small nil) |
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219 | (defun calcFunc-clean (a &optional prec) ; [X X S] [Public] |
220 | (if prec | |
221 | (cond ((Math-messy-integerp prec) | |
222 | (calcFunc-clean a (math-trunc prec))) | |
223 | ((or (not (integerp prec)) | |
224 | (< prec 3)) | |
225 | (calc-record-why "*Precision must be an integer 3 or above") | |
226 | (list 'calcFunc-clean a prec)) | |
227 | ((not (Math-objvecp a)) | |
228 | (list 'calcFunc-clean a prec)) | |
229 | (t (let ((calc-internal-prec prec) | |
230 | (math-chopping-small t)) | |
231 | (calcFunc-clean (math-normalize a))))) | |
232 | (cond ((eq (car-safe a) 'polar) | |
233 | (let ((theta (math-mod (nth 2 a) | |
234 | (if (eq calc-angle-mode 'rad) | |
235 | (math-two-pi) | |
236 | 360)))) | |
237 | (math-neg | |
238 | (math-neg | |
239 | (math-normalize | |
240 | (list 'polar | |
241 | (calcFunc-clean (nth 1 a)) | |
242 | (calcFunc-clean theta))))))) | |
243 | ((memq (car-safe a) '(vec date hms)) | |
244 | (cons (car a) (mapcar 'calcFunc-clean (cdr a)))) | |
245 | ((memq (car-safe a) '(cplx mod sdev intv)) | |
246 | (math-normalize (cons (car a) (mapcar 'calcFunc-clean (cdr a))))) | |
247 | ((eq (car-safe a) 'float) | |
248 | (if math-chopping-small | |
249 | (if (or (> (nth 2 a) (- calc-internal-prec)) | |
250 | (Math-lessp (- calc-internal-prec) (calcFunc-xpon a))) | |
251 | (if (and (math-num-integerp a) | |
252 | (math-lessp (calcFunc-xpon a) calc-internal-prec)) | |
253 | (math-trunc a) | |
254 | a) | |
255 | 0) | |
256 | a)) | |
257 | ((Math-objectp a) a) | |
258 | ((math-infinitep a) a) | |
bf77c646 | 259 | (t (list 'calcFunc-clean a))))) |
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260 | |
261 | (defun calcFunc-pclean (a &optional prec) | |
262 | (math-map-over-constants (function (lambda (x) (calcFunc-clean x prec))) | |
bf77c646 | 263 | a)) |
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264 | |
265 | (defun calcFunc-pfloat (a) | |
bf77c646 | 266 | (math-map-over-constants 'math-float a)) |
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267 | |
268 | (defun calcFunc-pfrac (a &optional tol) | |
269 | (math-map-over-constants (function (lambda (x) (calcFunc-frac x tol))) | |
bf77c646 | 270 | a)) |
136211a9 | 271 | |
32bac5ed JB |
272 | ;; The variable math-moc-func is local to math-map-over-constants, |
273 | ;; but is used by math-map-over-constants-rec, which is called by | |
274 | ;; math-map-over-constants. | |
275 | (defvar math-moc-func) | |
276 | ||
277 | (defun math-map-over-constants (math-moc-func expr) | |
bf77c646 | 278 | (math-map-over-constants-rec expr)) |
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279 | |
280 | (defun math-map-over-constants-rec (expr) | |
281 | (cond ((or (Math-primp expr) | |
282 | (memq (car expr) '(intv sdev))) | |
283 | (or (and (Math-objectp expr) | |
32bac5ed | 284 | (funcall math-moc-func expr)) |
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285 | expr)) |
286 | ((and (memq (car expr) '(^ calcFunc-subscr)) | |
32bac5ed | 287 | (eq math-moc-func 'math-float) |
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288 | (= (length expr) 3) |
289 | (Math-integerp (nth 2 expr))) | |
290 | (list (car expr) | |
291 | (math-map-over-constants-rec (nth 1 expr)) | |
292 | (nth 2 expr))) | |
bf77c646 | 293 | (t (cons (car expr) (mapcar 'math-map-over-constants-rec (cdr expr)))))) |
136211a9 | 294 | |
a2e360d6 JB |
295 | (provide 'calc-stuff) |
296 | ||
bf77c646 | 297 | ;;; calc-stuff.el ends here |