1;;; calc-stuff.el --- miscellaneous functions for Calc 2 3;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004, 4;; 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: David Gillespie <daveg@synaptics.com> 7;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com> 8 9;; This file is part of GNU Emacs. 10 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 13;; the Free Software Foundation; either version 2, or (at your option) 14;; any later version. 15 16;; GNU Emacs is distributed in the hope that it will be useful, 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. 25 26;;; Commentary: 27 28;;; Code: 29 30;; This file is autoloaded from calc-ext.el. 31 32(require 'calc-ext) 33(require 'calc-macs) 34 35(defun calc-num-prefix (n) 36 "Use the number at the top of stack as the numeric prefix for the next command. 37With a prefix, push that prefix as a number onto the stack." 38 (interactive "P") 39 (calc-wrapper 40 (if n 41 (calc-enter-result 0 "" (prefix-numeric-value n)) 42 (let ((num (calc-top 1))) 43 (if (math-messy-integerp num) 44 (setq num (math-trunc num))) 45 (or (integerp num) 46 (error "Argument must be a small integer")) 47 (calc-pop-stack 1) 48 (setq prefix-arg num) 49 (message "%d-" num))))) ; a (lame) simulation of the real thing... 50 51 52(defun calc-more-recursion-depth (n) 53 (interactive "P") 54 (calc-wrapper 55 (if (calc-is-inverse) 56 (calc-less-recursion-depth n) 57 (let ((n (if n (prefix-numeric-value n) 2))) 58 (if (> n 1) 59 (setq max-specpdl-size (* max-specpdl-size n) 60 max-lisp-eval-depth (* max-lisp-eval-depth n)))) 61 (message "max-lisp-eval-depth is now %d" max-lisp-eval-depth)))) 62 63(defun calc-less-recursion-depth (n) 64 (interactive "P") 65 (let ((n (if n (prefix-numeric-value n) 2))) 66 (if (> n 1) 67 (setq max-specpdl-size 68 (max (/ max-specpdl-size n) 600) 69 max-lisp-eval-depth 70 (max (/ max-lisp-eval-depth n) 200)))) 71 (message "max-lisp-eval-depth is now %d" max-lisp-eval-depth)) 72 73 74(defvar calc-which-why nil) 75(defvar calc-last-why-command nil) 76(defun calc-explain-why (why &optional more) 77 (if (eq (car why) '*) 78 (setq why (cdr why))) 79 (let* ((pred (car why)) 80 (arg (nth 1 why)) 81 (msg (cond ((not pred) "Wrong type of argument") 82 ((stringp pred) pred) 83 ((eq pred 'integerp) "Integer expected") 84 ((eq pred 'natnump) 85 (if (and arg (Math-objvecp arg) (not (Math-integerp arg))) 86 "Integer expected" 87 "Nonnegative integer expected")) 88 ((eq pred 'posintp) 89 (if (and arg (Math-objvecp arg) (not (Math-integerp arg))) 90 "Integer expected" 91 "Positive integer expected")) 92 ((eq pred 'fixnump) 93 (if (and arg (Math-integerp arg)) 94 "Small integer expected" 95 "Integer expected")) 96 ((eq pred 'fixnatnump) 97 (if (and arg (Math-natnump arg)) 98 "Small integer expected" 99 (if (and arg (Math-objvecp arg) 100 (not (Math-integerp arg))) 101 "Integer expected" 102 "Nonnegative integer expected"))) 103 ((eq pred 'fixposintp) 104 (if (and arg (Math-integerp arg) (Math-posp arg)) 105 "Small integer expected" 106 (if (and arg (Math-objvecp arg) 107 (not (Math-integerp arg))) 108 "Integer expected" 109 "Positive integer expected"))) 110 ((eq pred 'posp) "Positive number expected") 111 ((eq pred 'negp) "Negative number expected") 112 ((eq pred 'nonzerop) "Nonzero number expected") 113 ((eq pred 'realp) "Real number expected") 114 ((eq pred 'anglep) "Real number expected") 115 ((eq pred 'hmsp) "HMS form expected") 116 ((eq pred 'datep) 117 (if (and arg (Math-objectp arg) 118 (not (Math-realp arg))) 119 "Real number or date form expected" 120 "Date form expected")) 121 ((eq pred 'numberp) "Number expected") 122 ((eq pred 'scalarp) "Number expected") 123 ((eq pred 'vectorp) "Vector or matrix expected") 124 ((eq pred 'numvecp) "Number or vector expected") 125 ((eq pred 'matrixp) "Matrix expected") 126 ((eq pred 'square-matrixp) 127 (if (and arg (math-matrixp arg)) 128 "Square matrix expected" 129 "Matrix expected")) 130 ((eq pred 'objectp) "Number expected") 131 ((eq pred 'constp) "Constant expected") 132 ((eq pred 'range) "Argument out of range") 133 (t (format "%s expected" pred)))) 134 (punc ": ") 135 (calc-can-abbrev-vectors t)) 136 (while (setq why (cdr why)) 137 (and (car why) 138 (setq msg (concat msg punc (if (stringp (car why)) 139 (car why) 140 (math-format-flat-expr (car why) 0))) 141 punc ", "))) 142 (message "%s%s" msg (if more " [w=more]" "")))) 143 144(defun calc-why () 145 (interactive) 146 (if (not (eq this-command last-command)) 147 (if (eq last-command calc-last-why-command) 148 (setq calc-which-why (cdr calc-why)) 149 (setq calc-which-why calc-why))) 150 (if calc-which-why 151 (progn 152 (calc-explain-why (car calc-which-why) (cdr calc-which-why)) 153 (setq calc-which-why (cdr calc-which-why))) 154 (if calc-why 155 (progn 156 (message "(No further explanations available)") 157 (setq calc-which-why calc-why)) 158 (message "No explanations available")))) 159 160 161(defun calc-version () 162 (interactive) 163 (message "Calc %s" calc-version)) 164 165;; The following caches are declared in other files, but are 166;; reset here. 167(defvar math-lud-cache) ; calc-mtx.el 168(defvar math-log2-cache) ; calc-bin.el 169(defvar math-radix-digits-cache) ; calc-bin.el 170(defvar math-radix-float-cache-tag) ; calc-bin.el 171(defvar math-random-cache) ; calc-comb.el 172(defvar math-max-digits-cache) ; calc-bin.el 173(defvar math-integral-cache) ; calcalg2.el 174(defvar math-units-table) ; calc-units.el 175(defvar math-decls-cache-tag) ; calc-arith.el 176(defvar math-format-date-cache) ; calc-forms.el 177(defvar math-holidays-cache-tag) ; calc-forms.el 178 179(defun calc-flush-caches (&optional inhibit-msg) 180 (interactive "P") 181 (calc-wrapper 182 (setq math-lud-cache nil 183 math-log2-cache nil 184 math-radix-digits-cache nil 185 math-radix-float-cache-tag nil 186 math-random-cache nil 187 math-max-digits-cache nil 188 math-integral-cache nil 189 math-units-table nil 190 math-decls-cache-tag nil 191 math-eval-rules-cache-tag t 192 math-format-date-cache nil 193 math-holidays-cache-tag t) 194 (mapcar (function (lambda (x) (set x -100))) math-cache-list) 195 (unless inhibit-msg 196 (message "All internal calculator caches have been reset")))) 197 198 199;;; Conversions. 200 201(defun calc-clean (n) 202 (interactive "P") 203 (calc-slow-wrapper 204 (calc-with-default-simplification 205 (let ((func (if (calc-is-hyperbolic) 'calcFunc-clean 'calcFunc-pclean))) 206 (calc-enter-result 1 "cln" 207 (if n 208 (let ((n (prefix-numeric-value n))) 209 (list func 210 (calc-top-n 1) 211 (if (<= n 0) 212 (+ n calc-internal-prec) 213 n))) 214 (list func (calc-top-n 1)))))))) 215 216(defun calc-clean-num (num) 217 (interactive "P") 218 (calc-clean (- (if num 219 (prefix-numeric-value num) 220 (if (and (>= last-command-char ?0) 221 (<= last-command-char ?9)) 222 (- last-command-char ?0) 223 (error "Number required")))))) 224 225 226(defvar math-chopping-small nil) 227(defun calcFunc-clean (a &optional prec) ; [X X S] [Public] 228 (if prec 229 (cond ((Math-messy-integerp prec) 230 (calcFunc-clean a (math-trunc prec))) 231 ((or (not (integerp prec)) 232 (< prec 3)) 233 (calc-record-why "*Precision must be an integer 3 or above") 234 (list 'calcFunc-clean a prec)) 235 ((not (Math-objvecp a)) 236 (list 'calcFunc-clean a prec)) 237 (t (let ((calc-internal-prec prec) 238 (math-chopping-small t)) 239 (calcFunc-clean (math-normalize a))))) 240 (cond ((eq (car-safe a) 'polar) 241 (let ((theta (math-mod (nth 2 a) 242 (if (eq calc-angle-mode 'rad) 243 (math-two-pi) 244 360)))) 245 (math-neg 246 (math-neg 247 (math-normalize 248 (list 'polar 249 (calcFunc-clean (nth 1 a)) 250 (calcFunc-clean theta))))))) 251 ((memq (car-safe a) '(vec date hms)) 252 (cons (car a) (mapcar 'calcFunc-clean (cdr a)))) 253 ((memq (car-safe a) '(cplx mod sdev intv)) 254 (math-normalize (cons (car a) (mapcar 'calcFunc-clean (cdr a))))) 255 ((eq (car-safe a) 'float) 256 (if math-chopping-small 257 (if (or (> (nth 2 a) (- calc-internal-prec)) 258 (Math-lessp (- calc-internal-prec) (calcFunc-xpon a))) 259 (if (and (math-num-integerp a) 260 (math-lessp (calcFunc-xpon a) calc-internal-prec)) 261 (math-trunc a) 262 a) 263 0) 264 a)) 265 ((Math-objectp a) a) 266 ((math-infinitep a) a) 267 (t (list 'calcFunc-clean a))))) 268 269(defun calcFunc-pclean (a &optional prec) 270 (math-map-over-constants (function (lambda (x) (calcFunc-clean x prec))) 271 a)) 272 273(defun calcFunc-pfloat (a) 274 (math-map-over-constants 'math-float a)) 275 276(defun calcFunc-pfrac (a &optional tol) 277 (math-map-over-constants (function (lambda (x) (calcFunc-frac x tol))) 278 a)) 279 280;; The variable math-moc-func is local to math-map-over-constants, 281;; but is used by math-map-over-constants-rec, which is called by 282;; math-map-over-constants. 283(defvar math-moc-func) 284 285(defun math-map-over-constants (math-moc-func expr) 286 (math-map-over-constants-rec expr)) 287 288(defun math-map-over-constants-rec (expr) 289 (cond ((or (Math-primp expr) 290 (memq (car expr) '(intv sdev))) 291 (or (and (Math-objectp expr) 292 (funcall math-moc-func expr)) 293 expr)) 294 ((and (memq (car expr) '(^ calcFunc-subscr)) 295 (eq math-moc-func 'math-float) 296 (= (length expr) 3) 297 (Math-integerp (nth 2 expr))) 298 (list (car expr) 299 (math-map-over-constants-rec (nth 1 expr)) 300 (nth 2 expr))) 301 (t (cons (car expr) (mapcar 'math-map-over-constants-rec (cdr expr)))))) 302 303(provide 'calc-stuff) 304 305;;; arch-tag: 789332ef-a178-49d3-8fb7-5d7ed7e21f56 306;;; calc-stuff.el ends here 307