lisp/calc/calc-macs.el

   1 ;;; calc-macs.el --- important macros for Calc
   2
   3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007, 2008 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 3 of the License, or
  14 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 ;; Declare functions which are defined elsewhere.
  29 (declare-function math-zerop "calc-misc" (a))
  30 (declare-function math-negp "calc-misc" (a))
  31 (declare-function math-looks-negp "calc-misc" (a))
  32 (declare-function math-posp "calc-misc" (a))
  33 (declare-function math-compare "calc-ext" (a b))
  34 (declare-function math-bignum "calc" (a))
  35 (declare-function math-compare-bignum "calc-ext" (a b))
  36
  37
  38 (defmacro calc-wrapper (&rest body)
  39   `(calc-do (function (lambda ()
  40                         ,@body))))
  41
  42 (defmacro calc-slow-wrapper (&rest body)
  43   `(calc-do
  44     (function (lambda () ,@body)) (point)))
  45
  46 (defmacro math-showing-full-precision (form)
  47   `(let ((calc-float-format calc-full-float-format))
  48      ,form))
  49
  50 (defmacro math-with-extra-prec (delta &rest body)
  51   `(math-normalize
  52     (let ((calc-internal-prec (+ calc-internal-prec ,delta)))
  53       ,@body)))
  54
  55 (defmacro math-working (msg arg)        ; [Public]
  56   `(if (eq calc-display-working-message 'lots)
  57        (math-do-working ,msg ,arg)))
  58
  59 (defmacro calc-with-default-simplification (&rest body)
  60   `(let ((calc-simplify-mode (and (not (memq calc-simplify-mode '(none num)))
  61                                   calc-simplify-mode)))
  62      ,@body))
  63
  64 (defmacro calc-with-trail-buffer (&rest body)
  65   `(let ((save-buf (current-buffer))
  66          (calc-command-flags nil))
  67      (with-current-buffer (calc-trail-display t)
  68        (progn
  69          (goto-char calc-trail-pointer)
  70          ,@body))))
  71
  72 ;;; Faster in-line version zerop, normalized values only.
  73 (defsubst Math-zerop (a)                ; [P N]
  74   (if (consp a)
  75       (and (not (memq (car a) '(bigpos bigneg)))
  76            (if (eq (car a) 'float)
  77                (eq (nth 1 a) 0)
  78              (math-zerop a)))
  79     (eq a 0)))
  80
  81 (defsubst Math-integer-negp (a)
  82   (if (consp a)
  83       (eq (car a) 'bigneg)
  84     (< a 0)))
  85
  86 (defsubst Math-integer-posp (a)
  87   (if (consp a)
  88       (eq (car a) 'bigpos)
  89     (> a 0)))
  90
  91 (defsubst Math-negp (a)
  92   (if (consp a)
  93       (or (eq (car a) 'bigneg)
  94           (and (not (eq (car a) 'bigpos))
  95                (if (memq (car a) '(frac float))
  96                    (Math-integer-negp (nth 1 a))
  97                  (math-negp a))))
  98     (< a 0)))
  99
 100 (defsubst Math-looks-negp (a)           ; [P x] [Public]
 101   (or (Math-negp a)
 102       (and (consp a) (or (eq (car a) 'neg)
 103                          (and (memq (car a) '(* /))
 104                               (or (math-looks-negp (nth 1 a))
 105                                   (math-looks-negp (nth 2 a))))))))
 106
 107 (defsubst Math-posp (a)
 108   (if (consp a)
 109       (or (eq (car a) 'bigpos)
 110           (and (not (eq (car a) 'bigneg))
 111                (if (memq (car a) '(frac float))
 112                    (Math-integer-posp (nth 1 a))
 113                  (math-posp a))))
 114     (> a 0)))
 115
 116 (defsubst Math-integerp (a)
 117   (or (not (consp a))
 118       (memq (car a) '(bigpos bigneg))))
 119
 120 (defsubst Math-natnump (a)
 121   (if (consp a)
 122       (eq (car a) 'bigpos)
 123     (>= a 0)))
 124
 125 (defsubst Math-ratp (a)
 126   (or (not (consp a))
 127       (memq (car a) '(bigpos bigneg frac))))
 128
 129 (defsubst Math-realp (a)
 130   (or (not (consp a))
 131       (memq (car a) '(bigpos bigneg frac float))))
 132
 133 (defsubst Math-anglep (a)
 134   (or (not (consp a))
 135       (memq (car a) '(bigpos bigneg frac float hms))))
 136
 137 (defsubst Math-numberp (a)
 138   (or (not (consp a))
 139       (memq (car a) '(bigpos bigneg frac float cplx polar))))
 140
 141 (defsubst Math-scalarp (a)
 142   (or (not (consp a))
 143       (memq (car a) '(bigpos bigneg frac float cplx polar hms))))
 144
 145 (defsubst Math-vectorp (a)
 146   (and (consp a) (eq (car a) 'vec)))
 147
 148 (defsubst Math-messy-integerp (a)
 149   (and (consp a)
 150        (eq (car a) 'float)
 151        (>= (nth 2 a) 0)))
 152
 153 (defsubst Math-objectp (a)              ;  [Public]
 154   (or (not (consp a))
 155       (memq (car a)
 156             '(bigpos bigneg frac float cplx polar hms date sdev intv mod))))
 157
 158 (defsubst Math-objvecp (a)              ;  [Public]
 159   (or (not (consp a))
 160       (memq (car a)
 161             '(bigpos bigneg frac float cplx polar hms date
 162                      sdev intv mod vec))))
 163
 164 ;;; Compute the negative of A.  [O O; o o] [Public]
 165 (defsubst Math-integer-neg (a)
 166   (if (consp a)
 167       (if (eq (car a) 'bigpos)
 168           (cons 'bigneg (cdr a))
 169         (cons 'bigpos (cdr a)))
 170     (- a)))
 171
 172 (defsubst Math-equal (a b)
 173   (= (math-compare a b) 0))
 174
 175 (defsubst Math-lessp (a b)
 176   (= (math-compare a b) -1))
 177
 178 (defsubst Math-primp (a)
 179   (or (not (consp a))
 180       (memq (car a) '(bigpos bigneg frac float cplx polar
 181                              hms date mod var))))
 182
 183 (defsubst Math-num-integerp (a)
 184   (or (not (consp a))
 185       (memq (car a) '(bigpos bigneg))
 186       (and (eq (car a) 'float)
 187            (>= (nth 2 a) 0))))
 188
 189 (defsubst Math-bignum-test (a)          ; [B N; B s; b b]
 190   (if (consp a)
 191       a
 192     (math-bignum a)))
 193
 194 (defsubst Math-equal-int (a b)
 195   (or (eq a b)
 196       (and (consp a)
 197            (eq (car a) 'float)
 198            (eq (nth 1 a) b)
 199            (= (nth 2 a) 0))))
 200
 201 (defsubst Math-natnum-lessp (a b)
 202   (if (consp a)
 203       (and (consp b)
 204            (= (math-compare-bignum (cdr a) (cdr b)) -1))
 205     (or (consp b)
 206         (< a b))))
 207
 208 (provide 'calc-macs)
 209
 210 ;; arch-tag: 08ba8ec2-fcff-4b80-a079-ec661bdb057e
 211 ;;; calc-macs.el ends here