lisp/calc/calc-macs.el

   1 ;;; calc-macs.el --- important macros for Calc
   2
   3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2005 Free Software Foundation, Inc.
   4
   5 ;; Author: David Gillespie <daveg@synaptics.com>
   6 ;; Maintainer: Jay Belanger <belanger@truman.edu>
   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 (defmacro calc-wrapper (&rest body)
  30   `(calc-do (function (lambda ()
  31                         ,@body))))
  32
  33 (defmacro calc-slow-wrapper (&rest body)
  34   `(calc-do
  35     (function (lambda () ,@body)) (point)))
  36
  37 (defmacro math-showing-full-precision (form)
  38   `(let ((calc-float-format calc-full-float-format))
  39      ,form))
  40
  41 (defmacro math-with-extra-prec (delta &rest body)
  42   `(math-normalize
  43     (let ((calc-internal-prec (+ calc-internal-prec ,delta)))
  44       ,@body)))
  45
  46 (defmacro math-working (msg arg)        ; [Public]
  47   `(if (eq calc-display-working-message 'lots)
  48        (math-do-working ,msg ,arg)))
  49
  50 (defmacro calc-with-default-simplification (&rest body)
  51   `(let ((calc-simplify-mode (and (not (memq calc-simplify-mode '(none num)))
  52                                   calc-simplify-mode)))
  53      ,@body))
  54
  55 (defmacro calc-with-trail-buffer (&rest body)
  56   `(let ((save-buf (current-buffer))
  57          (calc-command-flags nil))
  58      (with-current-buffer (calc-trail-display t)
  59        (progn
  60          (goto-char calc-trail-pointer)
  61          ,@body))))
  62
  63 ;;; Faster in-line version zerop, normalized values only.
  64 (defsubst Math-zerop (a)                ; [P N]
  65   (if (consp a)
  66       (and (not (memq (car a) '(bigpos bigneg)))
  67            (if (eq (car a) 'float)
  68                (eq (nth 1 a) 0)
  69              (math-zerop a)))
  70     (eq a 0)))
  71
  72 (defsubst Math-integer-negp (a)
  73   (if (consp a)
  74       (eq (car a) 'bigneg)
  75     (< a 0)))
  76
  77 (defsubst Math-integer-posp (a)
  78   (if (consp a)
  79       (eq (car a) 'bigpos)
  80     (> a 0)))
  81
  82 (defsubst Math-negp (a)
  83   (if (consp a)
  84       (or (eq (car a) 'bigneg)
  85           (and (not (eq (car a) 'bigpos))
  86                (if (memq (car a) '(frac float))
  87                    (Math-integer-negp (nth 1 a))
  88                  (math-negp a))))
  89     (< a 0)))
  90
  91 (defsubst Math-looks-negp (a)           ; [P x] [Public]
  92   (or (Math-negp a)
  93       (and (consp a) (or (eq (car a) 'neg)
  94                          (and (memq (car a) '(* /))
  95                               (or (math-looks-negp (nth 1 a))
  96                                   (math-looks-negp (nth 2 a))))))))
  97
  98 (defsubst Math-posp (a)
  99   (if (consp a)
 100       (or (eq (car a) 'bigpos)
 101           (and (not (eq (car a) 'bigneg))
 102                (if (memq (car a) '(frac float))
 103                    (Math-integer-posp (nth 1 a))
 104                  (math-posp a))))
 105     (> a 0)))
 106
 107 (defsubst Math-integerp (a)
 108   (or (not (consp a))
 109       (memq (car a) '(bigpos bigneg))))
 110
 111 (defsubst Math-natnump (a)
 112   (if (consp a)
 113       (eq (car a) 'bigpos)
 114     (>= a 0)))
 115
 116 (defsubst Math-ratp (a)
 117   (or (not (consp a))
 118       (memq (car a) '(bigpos bigneg frac))))
 119
 120 (defsubst Math-realp (a)
 121   (or (not (consp a))
 122       (memq (car a) '(bigpos bigneg frac float))))
 123
 124 (defsubst Math-anglep (a)
 125   (or (not (consp a))
 126       (memq (car a) '(bigpos bigneg frac float hms))))
 127
 128 (defsubst Math-numberp (a)
 129   (or (not (consp a))
 130       (memq (car a) '(bigpos bigneg frac float cplx polar))))
 131
 132 (defsubst Math-scalarp (a)
 133   (or (not (consp a))
 134       (memq (car a) '(bigpos bigneg frac float cplx polar hms))))
 135
 136 (defsubst Math-vectorp (a)
 137   (and (consp a) (eq (car a) 'vec)))
 138
 139 (defsubst Math-messy-integerp (a)
 140   (and (consp a)
 141        (eq (car a) 'float)
 142        (>= (nth 2 a) 0)))
 143
 144 (defsubst Math-objectp (a)              ;  [Public]
 145   (or (not (consp a))
 146       (memq (car a)
 147             '(bigpos bigneg frac float cplx polar hms date sdev intv mod))))
 148
 149 (defsubst Math-objvecp (a)              ;  [Public]
 150   (or (not (consp a))
 151       (memq (car a)
 152             '(bigpos bigneg frac float cplx polar hms date
 153                      sdev intv mod vec))))
 154
 155 ;;; Compute the negative of A.  [O O; o o] [Public]
 156 (defsubst Math-integer-neg (a)
 157   (if (consp a)
 158       (if (eq (car a) 'bigpos)
 159           (cons 'bigneg (cdr a))
 160         (cons 'bigpos (cdr a)))
 161     (- a)))
 162
 163 (defsubst Math-equal (a b)
 164   (= (math-compare a b) 0))
 165
 166 (defsubst Math-lessp (a b)
 167   (= (math-compare a b) -1))
 168
 169 (defsubst Math-primp (a)
 170   (or (not (consp a))
 171       (memq (car a) '(bigpos bigneg frac float cplx polar
 172                              hms date mod var))))
 173
 174 (defsubst Math-num-integerp (a)
 175   (or (not (consp a))
 176       (memq (car a) '(bigpos bigneg))
 177       (and (eq (car a) 'float)
 178            (>= (nth 2 a) 0))))
 179
 180 (defsubst Math-bignum-test (a)          ; [B N; B s; b b]
 181   (if (consp a)
 182       a
 183     (math-bignum a)))
 184
 185 (defsubst Math-equal-int (a b)
 186   (or (eq a b)
 187       (and (consp a)
 188            (eq (car a) 'float)
 189            (eq (nth 1 a) b)
 190            (= (nth 2 a) 0))))
 191
 192 (defsubst Math-natnum-lessp (a b)
 193   (if (consp a)
 194       (and (consp b)
 195            (= (math-compare-bignum (cdr a) (cdr b)) -1))
 196     (or (consp b)
 197         (< a b))))
 198
 199 (provide 'calc-macs)
 200
 201 ;;; arch-tag: 08ba8ec2-fcff-4b80-a079-ec661bdb057e
 202 ;;; calc-macs.el ends here