lisp/calc/calc-macs.el

   1 ;;; calc-macs.el --- important macros for Calc
   2
   3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
   4
   5 ;; Author: David Gillespie <daveg@synaptics.com>
   6 ;; Maintainers: D. Goel <deego@gnufans.org>
   7 ;;              Colin Walters <walters@debian.org>
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is distributed in the hope that it will be useful,
  12 ;; but WITHOUT ANY WARRANTY.  No author or distributor
  13 ;; accepts responsibility to anyone for the consequences of using it
  14 ;; or for whether it serves any particular purpose or works at all,
  15 ;; unless he says so in writing.  Refer to the GNU Emacs General Public
  16 ;; License for full details.
  17
  18 ;; Everyone is granted permission to copy, modify and redistribute
  19 ;; GNU Emacs, but only under the conditions described in the
  20 ;; GNU Emacs General Public License.   A copy of this license is
  21 ;; supposed to have been given to you along with GNU Emacs so you
  22 ;; can know your rights and responsibilities.  It should be in a
  23 ;; file named COPYING.  Among other things, the copyright notice
  24 ;; and this notice must be preserved on all copies.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 (provide 'calc-macs)
  31
  32 (defun calc-need-macros () nil)
  33
  34 (defmacro calc-wrapper (&rest body)
  35   `(calc-do (function (lambda ()
  36                         ,@body))))
  37
  38 (defmacro calc-slow-wrapper (&rest body)
  39   `(calc-do
  40     (function (lambda () ,@body)) (point)))
  41
  42 (defmacro math-showing-full-precision (form)
  43   `(let ((calc-float-format calc-full-float-format))
  44      ,form))
  45
  46 (defmacro math-with-extra-prec (delta &rest body)
  47   `(math-normalize
  48     (let ((calc-internal-prec (+ calc-internal-prec ,delta)))
  49       ,@body)))
  50
  51 (defmacro math-working (msg arg)        ; [Public]
  52   `(if (eq calc-display-working-message 'lots)
  53        (math-do-working ,msg ,arg)))
  54
  55 (defmacro calc-with-default-simplification (&rest body)
  56   `(let ((calc-simplify-mode (and (not (memq calc-simplify-mode '(none num)))
  57                                   calc-simplify-mode)))
  58      ,@body))
  59
  60 (defmacro calc-with-trail-buffer (&rest body)
  61   `(let ((save-buf (current-buffer))
  62          (calc-command-flags nil))
  63      (with-current-buffer (calc-trail-display t)
  64        (progn
  65          (goto-char calc-trail-pointer)
  66          ,@body))))
  67
  68 ;;; Faster in-line version zerop, normalized values only.
  69 (defsubst Math-zerop (a)                ; [P N]
  70   (if (consp a)
  71       (and (not (memq (car a) '(bigpos bigneg)))
  72            (if (eq (car a) 'float)
  73                (eq (nth 1 a) 0)
  74              (math-zerop a)))
  75     (eq a 0)))
  76
  77 (defsubst Math-integer-negp (a)
  78   (if (consp a)
  79       (eq (car a) 'bigneg)
  80     (< a 0)))
  81
  82 (defsubst Math-integer-posp (a)
  83   (if (consp a)
  84       (eq (car a) 'bigpos)
  85     (> a 0)))
  86
  87 (defsubst Math-negp (a)
  88   (if (consp a)
  89       (or (eq (car a) 'bigneg)
  90           (and (not (eq (car a) 'bigpos))
  91                (if (memq (car a) '(frac float))
  92                    (Math-integer-negp (nth 1 a))
  93                  (math-negp a))))
  94     (< a 0)))
  95
  96 (defsubst Math-looks-negp (a)           ; [P x] [Public]
  97   (or (Math-negp a)
  98       (and (consp a) (or (eq (car a) 'neg)
  99                          (and (memq (car a) '(* /))
 100                               (or (math-looks-negp (nth 1 a))
 101                                   (math-looks-negp (nth 2 a))))))))
 102
 103 (defsubst Math-posp (a)
 104   (if (consp a)
 105       (or (eq (car a) 'bigpos)
 106           (and (not (eq (car a) 'bigneg))
 107                (if (memq (car a) '(frac float))
 108                    (Math-integer-posp (nth 1 a))
 109                  (math-posp a))))
 110     (> a 0)))
 111
 112 (defsubst Math-integerp (a)
 113   (or (not (consp a))
 114       (memq (car a) '(bigpos bigneg))))
 115
 116 (defsubst Math-natnump (a)
 117   (if (consp a)
 118       (eq (car a) 'bigpos)
 119     (>= a 0)))
 120
 121 (defsubst Math-ratp (a)
 122   (or (not (consp a))
 123       (memq (car a) '(bigpos bigneg frac))))
 124
 125 (defsubst Math-realp (a)
 126   (or (not (consp a))
 127       (memq (car a) '(bigpos bigneg frac float))))
 128
 129 (defsubst Math-anglep (a)
 130   (or (not (consp a))
 131       (memq (car a) '(bigpos bigneg frac float hms))))
 132
 133 (defsubst Math-numberp (a)
 134   (or (not (consp a))
 135       (memq (car a) '(bigpos bigneg frac float cplx polar))))
 136
 137 (defsubst Math-scalarp (a)
 138   (or (not (consp a))
 139       (memq (car a) '(bigpos bigneg frac float cplx polar hms))))
 140
 141 (defsubst Math-vectorp (a)
 142   (and (consp a) (eq (car a) 'vec)))
 143
 144 (defsubst Math-messy-integerp (a)
 145   (and (consp a)
 146        (eq (car a) 'float)
 147        (>= (nth 2 a) 0)))
 148
 149 (defsubst Math-objectp (a)              ;  [Public]
 150   (or (not (consp a))
 151       (memq (car a)
 152             '(bigpos bigneg frac float cplx polar hms date sdev intv mod))))
 153
 154 (defsubst Math-objvecp (a)              ;  [Public]
 155   (or (not (consp a))
 156       (memq (car a)
 157             '(bigpos bigneg frac float cplx polar hms date
 158                      sdev intv mod vec))))
 159
 160 ;;; Compute the negative of A.  [O O; o o] [Public]
 161 (defsubst Math-integer-neg (a)
 162   (if (consp a)
 163       (if (eq (car a) 'bigpos)
 164           (cons 'bigneg (cdr a))
 165         (cons 'bigpos (cdr a)))
 166     (- a)))
 167
 168 (defsubst Math-equal (a b)
 169   (= (math-compare a b) 0))
 170
 171 (defsubst Math-lessp (a b)
 172   (= (math-compare a b) -1))
 173
 174 (defsubst Math-primp (a)
 175   (or (not (consp a))
 176       (memq (car a) '(bigpos bigneg frac float cplx polar
 177                              hms date mod var))))
 178
 179 (defsubst Math-num-integerp (a)
 180   (or (not (consp a))
 181       (memq (car a) '(bigpos bigneg))
 182       (and (eq (car a) 'float)
 183            (>= (nth 2 a) 0))))
 184
 185 (defsubst Math-bignum-test (a)          ; [B N; B s; b b]
 186   (if (consp a)
 187       a
 188     (math-bignum a)))
 189
 190 (defsubst Math-equal-int (a b)
 191   (or (eq a b)
 192       (and (consp a)
 193            (eq (car a) 'float)
 194            (eq (nth 1 a) b)
 195            (= (nth 2 a) 0))))
 196
 197 (defsubst Math-natnum-lessp (a b)
 198   (if (consp a)
 199       (and (consp b)
 200            (= (math-compare-bignum (cdr a) (cdr b)) -1))
 201     (or (consp b)
 202         (< a b))))
 203
 204 ;;; arch-tag: 08ba8ec2-fcff-4b80-a079-ec661bdb057e
 205 ;;; calc-macs.el ends here