lisp/calc/calc-macs.el

   1 ;;; calc-macs.el --- important macros for Calc
   2
   3 ;; Copyright (C) 1990-1993, 2001-2013 Free Software Foundation, Inc.
   4
   5 ;; Author: David Gillespie <daveg@synaptics.com>
   6 ;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com>
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  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
  21 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;;; Code:
  26
  27 ;; Declare functions which are defined elsewhere.
  28 (declare-function math-zerop "calc-misc" (a))
  29 (declare-function math-negp "calc-misc" (a))
  30 (declare-function math-looks-negp "calc-misc" (a))
  31 (declare-function math-posp "calc-misc" (a))
  32 (declare-function math-compare "calc-ext" (a b))
  33 (declare-function math-bignum "calc" (a))
  34 (declare-function math-compare-bignum "calc-ext" (a b))
  35
  36
  37 (defmacro calc-wrapper (&rest body)
  38   `(calc-do (function (lambda ()
  39                         ,@body))))
  40
  41 (defmacro calc-slow-wrapper (&rest body)
  42   `(calc-do
  43     (function (lambda () ,@body)) (point)))
  44
  45 (defmacro math-showing-full-precision (form)
  46   `(let ((calc-float-format calc-full-float-format))
  47      ,form))
  48
  49 (defmacro math-with-extra-prec (delta &rest body)
  50   `(math-normalize
  51     (let ((calc-internal-prec (+ calc-internal-prec ,delta)))
  52       ,@body)))
  53
  54 (defmacro math-working (msg arg)        ; [Public]
  55   `(if (eq calc-display-working-message 'lots)
  56        (math-do-working ,msg ,arg)))
  57
  58 (defmacro calc-with-default-simplification (&rest body)
  59   `(let ((calc-simplify-mode (and (not (memq calc-simplify-mode '(none num)))
  60                                   calc-simplify-mode)))
  61      ,@body))
  62
  63 (defmacro calc-with-trail-buffer (&rest body)
  64   `(let ((save-buf (current-buffer))
  65          (calc-command-flags nil))
  66      (with-current-buffer (calc-trail-display t)
  67        (progn
  68          (goto-char calc-trail-pointer)
  69          ,@body))))
  70
  71 ;;; Faster in-line version zerop, normalized values only.
  72 (defsubst Math-zerop (a)                ; [P N]
  73   (if (consp a)
  74       (and (not (memq (car a) '(bigpos bigneg)))
  75            (if (eq (car a) 'float)
  76                (eq (nth 1 a) 0)
  77              (math-zerop a)))
  78     (eq a 0)))
  79
  80 (defsubst Math-integer-negp (a)
  81   (if (consp a)
  82       (eq (car a) 'bigneg)
  83     (< a 0)))
  84
  85 (defsubst Math-integer-posp (a)
  86   (if (consp a)
  87       (eq (car a) 'bigpos)
  88     (> a 0)))
  89
  90 (defsubst Math-negp (a)
  91   (if (consp a)
  92       (or (eq (car a) 'bigneg)
  93           (and (not (eq (car a) 'bigpos))
  94                (if (memq (car a) '(frac float))
  95                    (Math-integer-negp (nth 1 a))
  96                  (math-negp a))))
  97     (< a 0)))
  98
  99 (defsubst Math-looks-negp (a)           ; [P x] [Public]
 100   (or (Math-negp a)
 101       (and (consp a) (or (eq (car a) 'neg)
 102                          (and (memq (car a) '(* /))
 103                               (or (math-looks-negp (nth 1 a))
 104                                   (math-looks-negp (nth 2 a))))))))
 105
 106 (defsubst Math-posp (a)
 107   (if (consp a)
 108       (or (eq (car a) 'bigpos)
 109           (and (not (eq (car a) 'bigneg))
 110                (if (memq (car a) '(frac float))
 111                    (Math-integer-posp (nth 1 a))
 112                  (math-posp a))))
 113     (> a 0)))
 114
 115 (defsubst Math-integerp (a)
 116   (or (not (consp a))
 117       (memq (car a) '(bigpos bigneg))))
 118
 119 (defsubst Math-natnump (a)
 120   (if (consp a)
 121       (eq (car a) 'bigpos)
 122     (>= a 0)))
 123
 124 (defsubst Math-ratp (a)
 125   (or (not (consp a))
 126       (memq (car a) '(bigpos bigneg frac))))
 127
 128 (defsubst Math-realp (a)
 129   (or (not (consp a))
 130       (memq (car a) '(bigpos bigneg frac float))))
 131
 132 (defsubst Math-anglep (a)
 133   (or (not (consp a))
 134       (memq (car a) '(bigpos bigneg frac float hms))))
 135
 136 (defsubst Math-numberp (a)
 137   (or (not (consp a))
 138       (memq (car a) '(bigpos bigneg frac float cplx polar))))
 139
 140 (defsubst Math-scalarp (a)
 141   (or (not (consp a))
 142       (memq (car a) '(bigpos bigneg frac float cplx polar hms))))
 143
 144 (defsubst Math-vectorp (a)
 145   (and (consp a) (eq (car a) 'vec)))
 146
 147 (defsubst Math-messy-integerp (a)
 148   (and (consp a)
 149        (eq (car a) 'float)
 150        (>= (nth 2 a) 0)))
 151
 152 (defsubst Math-objectp (a)              ;  [Public]
 153   (or (not (consp a))
 154       (memq (car a)
 155             '(bigpos bigneg frac float cplx polar hms date sdev intv mod))))
 156
 157 (defsubst Math-objvecp (a)              ;  [Public]
 158   (or (not (consp a))
 159       (memq (car a)
 160             '(bigpos bigneg frac float cplx polar hms date
 161                      sdev intv mod vec))))
 162
 163 ;;; Compute the negative of A.  [O O; o o] [Public]
 164 (defsubst Math-integer-neg (a)
 165   (if (consp a)
 166       (if (eq (car a) 'bigpos)
 167           (cons 'bigneg (cdr a))
 168         (cons 'bigpos (cdr a)))
 169     (- a)))
 170
 171 (defsubst Math-equal (a b)
 172   (= (math-compare a b) 0))
 173
 174 (defsubst Math-lessp (a b)
 175   (= (math-compare a b) -1))
 176
 177 (defsubst Math-primp (a)
 178   (or (not (consp a))
 179       (memq (car a) '(bigpos bigneg frac float cplx polar
 180                              hms date mod var))))
 181
 182 (defsubst Math-num-integerp (a)
 183   (or (not (consp a))
 184       (memq (car a) '(bigpos bigneg))
 185       (and (eq (car a) 'float)
 186            (>= (nth 2 a) 0))))
 187
 188 (defsubst Math-bignum-test (a)          ; [B N; B s; b b]
 189   (if (consp a)
 190       a
 191     (math-bignum a)))
 192
 193 (defsubst Math-equal-int (a b)
 194   (or (eq a b)
 195       (and (consp a)
 196            (eq (car a) 'float)
 197            (eq (nth 1 a) b)
 198            (= (nth 2 a) 0))))
 199
 200 (defsubst Math-natnum-lessp (a b)
 201   (if (consp a)
 202       (and (consp b)
 203            (= (math-compare-bignum (cdr a) (cdr b)) -1))
 204     (or (consp b)
 205         (< a b))))
 206
 207 (provide 'calc-macs)
 208
 209 ;;; calc-macs.el ends here