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- ;; Calculator for GNU Emacs, part II [calc-units.el]
- ;; Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
- ;; Written by Dave Gillespie, daveg@synaptics.com.
-
- ;; This file is part of GNU Emacs.
-
- ;; GNU Emacs is distributed in the hope that it will be useful,
- ;; but WITHOUT ANY WARRANTY. No author or distributor
- ;; accepts responsibility to anyone for the consequences of using it
- ;; or for whether it serves any particular purpose or works at all,
- ;; unless he says so in writing. Refer to the GNU Emacs General Public
- ;; License for full details.
-
- ;; Everyone is granted permission to copy, modify and redistribute
- ;; GNU Emacs, but only under the conditions described in the
- ;; GNU Emacs General Public License. A copy of this license is
- ;; supposed to have been given to you along with GNU Emacs so you
- ;; can know your rights and responsibilities. It should be in a
- ;; file named COPYING. Among other things, the copyright notice
- ;; and this notice must be preserved on all copies.
-
-
-
- ;; This file is autoloaded from calc-ext.el.
- (require 'calc-ext)
-
- (require 'calc-macs)
-
- (defun calc-Need-calc-units () nil)
-
-
- ;;; Units commands.
-
- (defun calc-base-units ()
- (interactive)
- (calc-slow-wrapper
- (let ((calc-autorange-units nil))
- (calc-enter-result 1 "bsun" (math-simplify-units
- (math-to-standard-units (calc-top-n 1)
- nil)))))
- )
-
- (defun calc-quick-units ()
- (interactive)
- (calc-slow-wrapper
- (let* ((num (- last-command-char ?0))
- (pos (if (= num 0) 10 num))
- (units (calc-var-value 'var-Units))
- (expr (calc-top-n 1)))
- (or (and (>= num 0) (<= num 9))
- (error "Bad unit number"))
- (or (math-vectorp units)
- (error "No \"quick units\" are defined"))
- (or (< pos (length units))
- (error "Unit number %d not defined" pos))
- (if (math-units-in-expr-p expr nil)
- (calc-enter-result 1 (format "cun%d" num)
- (math-convert-units expr (nth pos units)))
- (calc-enter-result 1 (format "*un%d" num)
- (math-simplify-units
- (math-mul expr (nth pos units)))))))
- )
-
- (defun calc-convert-units (&optional old-units new-units)
- (interactive)
- (calc-slow-wrapper
- (let ((expr (calc-top-n 1))
- (uoldname nil)
- unew)
- (or (math-units-in-expr-p expr t)
- (let ((uold (or old-units
- (progn
- (setq uoldname (read-string "Old units: "))
- (if (equal uoldname "")
- (progn
- (setq uoldname "1")
- 1)
- (if (string-match "\\` */" uoldname)
- (setq uoldname (concat "1" uoldname)))
- (math-read-expr uoldname))))))
- (if (eq (car-safe uold) 'error)
- (error "Bad format in units expression: %s" (nth 1 uold)))
- (setq expr (math-mul expr uold))))
- (or new-units
- (setq new-units (read-string (if uoldname
- (concat "Old units: "
- uoldname
- ", new units: ")
- "New units: "))))
- (if (string-match "\\` */" new-units)
- (setq new-units (concat "1" new-units)))
- (setq units (math-read-expr new-units))
- (if (eq (car-safe units) 'error)
- (error "Bad format in units expression: %s" (nth 2 units)))
- (let ((unew (math-units-in-expr-p units t))
- (std (and (eq (car-safe units) 'var)
- (assq (nth 1 units) math-standard-units-systems))))
- (if std
- (calc-enter-result 1 "cvun" (math-simplify-units
- (math-to-standard-units expr
- (nth 1 std))))
- (or unew
- (error "No units specified"))
- (calc-enter-result 1 "cvun"
- (math-convert-units
- expr units
- (and uoldname (not (equal uoldname "1")))))))))
- )
-
- (defun calc-autorange-units (arg)
- (interactive "P")
- (calc-wrapper
- (calc-change-mode 'calc-autorange-units arg nil t)
- (message (if calc-autorange-units
- "Adjusting target unit prefix automatically."
- "Using target units exactly.")))
- )
-
- (defun calc-convert-temperature (&optional old-units new-units)
- (interactive)
- (calc-slow-wrapper
- (let ((expr (calc-top-n 1))
- (uold nil)
- (uoldname nil)
- unew)
- (setq uold (or old-units
- (let ((units (math-single-units-in-expr-p expr)))
- (if units
- (if (consp units)
- (list 'var (car units)
- (intern (concat "var-"
- (symbol-name
- (car units)))))
- (error "Not a pure temperature expression"))
- (math-read-expr
- (setq uoldname (read-string
- "Old temperature units: ")))))))
- (if (eq (car-safe uold) 'error)
- (error "Bad format in units expression: %s" (nth 2 uold)))
- (or (math-units-in-expr-p expr nil)
- (setq expr (math-mul expr uold)))
- (setq unew (or new-units
- (math-read-expr
- (read-string (if uoldname
- (concat "Old temperature units: "
- uoldname
- ", new units: ")
- "New temperature units: ")))))
- (if (eq (car-safe unew) 'error)
- (error "Bad format in units expression: %s" (nth 2 unew)))
- (calc-enter-result 1 "cvtm" (math-simplify-units
- (math-convert-temperature expr uold unew
- uoldname)))))
- )
-
- (defun calc-remove-units ()
- (interactive)
- (calc-slow-wrapper
- (calc-enter-result 1 "rmun" (math-simplify-units
- (math-remove-units (calc-top-n 1)))))
- )
-
- (defun calc-extract-units ()
- (interactive)
- (calc-slow-wrapper
- (calc-enter-result 1 "rmun" (math-simplify-units
- (math-extract-units (calc-top-n 1)))))
- )
-
- (defun calc-explain-units ()
- (interactive)
- (calc-wrapper
- (let ((num-units nil)
- (den-units nil))
- (calc-explain-units-rec (calc-top-n 1) 1)
- (and den-units (string-match "^[^(].* .*[^)]$" den-units)
- (setq den-units (concat "(" den-units ")")))
- (if num-units
- (if den-units
- (message "%s per %s" num-units den-units)
- (message "%s" num-units))
- (if den-units
- (message "1 per %s" den-units)
- (message "No units in expression")))))
- )
-
- (defun calc-explain-units-rec (expr pow)
- (let ((u (math-check-unit-name expr))
- pos)
- (if (and u (not (math-zerop pow)))
- (let ((name (or (nth 2 u) (symbol-name (car u)))))
- (if (eq (aref name 0) ?\*)
- (setq name (substring name 1)))
- (if (string-match "[^a-zA-Z0-9']" name)
- (if (string-match "^[a-zA-Z0-9' ()]*$" name)
- (while (setq pos (string-match "[ ()]" name))
- (setq name (concat (substring name 0 pos)
- (if (eq (aref name pos) 32) "-" "")
- (substring name (1+ pos)))))
- (setq name (concat "(" name ")"))))
- (or (eq (nth 1 expr) (car u))
- (setq name (concat (nth 2 (assq (aref (symbol-name
- (nth 1 expr)) 0)
- math-unit-prefixes))
- (if (and (string-match "[^a-zA-Z0-9']" name)
- (not (memq (car u) '(mHg gf))))
- (concat "-" name)
- (downcase name)))))
- (cond ((or (math-equal-int pow 1)
- (math-equal-int pow -1)))
- ((or (math-equal-int pow 2)
- (math-equal-int pow -2))
- (if (equal (nth 4 u) '((m . 1)))
- (setq name (concat "Square-" name))
- (setq name (concat name "-squared"))))
- ((or (math-equal-int pow 3)
- (math-equal-int pow -3))
- (if (equal (nth 4 u) '((m . 1)))
- (setq name (concat "Cubic-" name))
- (setq name (concat name "-cubed"))))
- (t
- (setq name (concat name "^"
- (math-format-number (math-abs pow))))))
- (if (math-posp pow)
- (setq num-units (if num-units
- (concat num-units " " name)
- name))
- (setq den-units (if den-units
- (concat den-units " " name)
- name))))
- (cond ((eq (car-safe expr) '*)
- (calc-explain-units-rec (nth 1 expr) pow)
- (calc-explain-units-rec (nth 2 expr) pow))
- ((eq (car-safe expr) '/)
- (calc-explain-units-rec (nth 1 expr) pow)
- (calc-explain-units-rec (nth 2 expr) (- pow)))
- ((memq (car-safe expr) '(neg + -))
- (calc-explain-units-rec (nth 1 expr) pow))
- ((and (eq (car-safe expr) '^)
- (math-realp (nth 2 expr)))
- (calc-explain-units-rec (nth 1 expr)
- (math-mul pow (nth 2 expr)))))))
- )
-
- (defun calc-simplify-units ()
- (interactive)
- (calc-slow-wrapper
- (calc-with-default-simplification
- (calc-enter-result 1 "smun" (math-simplify-units (calc-top-n 1)))))
- )
-
- (defun calc-view-units-table (n)
- (interactive "P")
- (and n (setq math-units-table-buffer-valid nil))
- (let ((win (get-buffer-window "*Units Table*")))
- (if (and win
- math-units-table
- math-units-table-buffer-valid)
- (progn
- (bury-buffer (window-buffer win))
- (let ((curwin (selected-window)))
- (select-window win)
- (switch-to-buffer nil)
- (select-window curwin)))
- (math-build-units-table-buffer nil)))
- )
-
- (defun calc-enter-units-table (n)
- (interactive "P")
- (and n (setq math-units-table-buffer-valid nil))
- (math-build-units-table-buffer t)
- (message (substitute-command-keys "Type \\[calc] to return to the Calculator."))
- )
-
- (defun calc-define-unit (uname desc)
- (interactive "SDefine unit name: \nsDescription: ")
- (calc-wrapper
- (let ((form (calc-top-n 1))
- (unit (assq uname math-additional-units)))
- (or unit
- (setq math-additional-units
- (cons (setq unit (list uname nil nil))
- math-additional-units)
- math-units-table nil))
- (setcar (cdr unit) (and (not (and (eq (car-safe form) 'var)
- (eq (nth 1 form) uname)))
- (not (math-equal-int form 1))
- (math-format-flat-expr form 0)))
- (setcar (cdr (cdr unit)) (and (not (equal desc ""))
- desc))))
- (calc-invalidate-units-table)
- )
-
- (defun calc-undefine-unit (uname)
- (interactive "SUndefine unit name: ")
- (calc-wrapper
- (let ((unit (assq uname math-additional-units)))
- (or unit
- (if (assq uname math-standard-units)
- (error "\"%s\" is a predefined unit name" uname)
- (error "Unit name \"%s\" not found" uname)))
- (setq math-additional-units (delq unit math-additional-units)
- math-units-table nil)))
- (calc-invalidate-units-table)
- )
-
- (defun calc-invalidate-units-table ()
- (setq math-units-table nil)
- (let ((buf (get-buffer "*Units Table*")))
- (and buf
- (save-excursion
- (set-buffer buf)
- (save-excursion
- (goto-char (point-min))
- (if (looking-at "Calculator Units Table")
- (let ((buffer-read-only nil))
- (insert "(Obsolete) ")))))))
- )
-
- (defun calc-get-unit-definition (uname)
- (interactive "SGet definition for unit: ")
- (calc-wrapper
- (math-build-units-table)
- (let ((unit (assq uname math-units-table)))
- (or unit
- (error "Unit name \"%s\" not found" uname))
- (let ((msg (nth 2 unit)))
- (if (stringp msg)
- (if (string-match "^\\*" msg)
- (setq msg (substring msg 1)))
- (setq msg (symbol-name uname)))
- (if (nth 1 unit)
- (progn
- (calc-enter-result 0 "ugdf" (nth 1 unit))
- (message "Derived unit: %s" msg))
- (calc-enter-result 0 "ugdf" (list 'var uname
- (intern
- (concat "var-"
- (symbol-name uname)))))
- (message "Base unit: %s" msg)))))
- )
-
- (defun calc-permanent-units ()
- (interactive)
- (calc-wrapper
- (let (pos)
- (set-buffer (find-file-noselect (substitute-in-file-name
- calc-settings-file)))
- (goto-char (point-min))
- (if (and (search-forward ";;; Custom units stored by Calc" nil t)
- (progn
- (beginning-of-line)
- (setq pos (point))
- (search-forward "\n;;; End of custom units" nil t)))
- (progn
- (beginning-of-line)
- (forward-line 1)
- (delete-region pos (point)))
- (goto-char (point-max))
- (insert "\n\n")
- (forward-char -1))
- (insert ";;; Custom units stored by Calc on " (current-time-string) "\n")
- (if math-additional-units
- (progn
- (insert "(setq math-additional-units '(\n")
- (let ((list math-additional-units))
- (while list
- (insert " (" (symbol-name (car (car list))) " "
- (if (nth 1 (car list))
- (if (stringp (nth 1 (car list)))
- (prin1-to-string (nth 1 (car list)))
- (prin1-to-string (math-format-flat-expr
- (nth 1 (car list)) 0)))
- "nil")
- " "
- (prin1-to-string (nth 2 (car list)))
- ")\n")
- (setq list (cdr list))))
- (insert "))\n"))
- (insert ";;; (no custom units defined)\n"))
- (insert ";;; End of custom units\n")
- (save-buffer)))
- )
-
-
-
-
-
- ;;; Units operations.
-
- ;;; Units table last updated 9-Jan-91 by Ulrich Mueller (ulm@vsnhd1.cern.ch)
- ;;; with some additions by Przemek Klosowski (przemek@rrdstrad.nist.gov)
-
- (defvar math-standard-units
- '( ;; Length
- ( m nil "*Meter" )
- ( in "2.54 cm" "Inch" )
- ( ft "12 in" "Foot" )
- ( yd "3 ft" "Yard" )
- ( mi "5280 ft" "Mile" )
- ( au "1.495979e11 m" "Astronomical Unit" )
- ( lyr "9460536207068016 m" "Light Year" )
- ( pc "206264.80625 au" "Parsec" )
- ( nmi "1852 m" "Nautical Mile" )
- ( fath "6 ft" "Fathom" )
- ( u "1 um" "Micron" )
- ( mil "in/1000" "Mil" )
- ( point "in/72" "Point (1/72 inch)" )
- ( tpt "in/72.27" "Point (TeX conventions)" )
- ( Ang "1e-10 m" "Angstrom" )
- ( mfi "mi+ft+in" "Miles + feet + inches" )
-
- ;; Area
- ( hect "10000 m^2" "*Hectare" )
- ( acre "mi^2 / 640" "Acre" )
- ( b "1e-28 m^2" "Barn" )
-
- ;; Volume
- ( l "1e-3 m^3" "*Liter" )
- ( L "1e-3 m^3" "Liter" )
- ( gal "4 qt" "US Gallon" )
- ( qt "2 pt" "Quart" )
- ( pt "2 cup" "Pint" )
- ( cup "8 ozfl" "Cup" )
- ( ozfl "2 tbsp" "Fluid Ounce" )
- ( floz "2 tbsp" "Fluid Ounce" )
- ( tbsp "3 tsp" "Tablespoon" )
- ( tsp "4.92892159375 ml" "Teaspoon" )
- ( vol "tsp+tbsp+ozfl+cup+pt+qt+gal" "Gallons + ... + teaspoons" )
- ( galC "4.54609 l" "Canadian Gallon" )
- ( galUK "4.546092 l" "UK Gallon" )
-
- ;; Time
- ( s nil "*Second" )
- ( sec "s" "Second" )
- ( min "60 s" "Minute" )
- ( hr "60 min" "Hour" )
- ( day "24 hr" "Day" )
- ( wk "7 day" "Week" )
- ( hms "wk+day+hr+min+s" "Hours, minutes, seconds" )
- ( yr "365.25 day" "Year" )
- ( Hz "1/s" "Hertz" )
-
- ;; Speed
- ( mph "mi/hr" "*Miles per hour" )
- ( kph "km/hr" "Kilometers per hour" )
- ( knot "nmi/hr" "Knot" )
- ( c "2.99792458e8 m/s" "Speed of light" )
-
- ;; Acceleration
- ( ga "9.80665 m/s^2" "*\"g\" acceleration" )
-
- ;; Mass
- ( g nil "*Gram" )
- ( lb "16 oz" "Pound (mass)" )
- ( oz "28.349523125 g" "Ounce (mass)" )
- ( ton "2000 lb" "Ton" )
- ( tpo "ton+lb+oz" "Tons + pounds + ounces (mass)" )
- ( t "1000 kg" "Metric ton" )
- ( tonUK "1016.0469088 kg" "UK ton" )
- ( lbt "12 ozt" "Troy pound" )
- ( ozt "31.103475 g" "Troy ounce" )
- ( ct ".2 g" "Carat" )
- ( amu "1.6605402e-24 g" "Unified atomic mass" )
-
- ;; Force
- ( N "m kg/s^2" "*Newton" )
- ( dyn "1e-5 N" "Dyne" )
- ( gf "ga g" "Gram (force)" )
- ( lbf "4.44822161526 N" "Pound (force)" )
- ( kip "1000 lbf" "Kilopound (force)" )
- ( pdl "0.138255 N" "Poundal" )
-
- ;; Energy
- ( J "N m" "*Joule" )
- ( erg "1e-7 J" "Erg" )
- ( cal "4.1868 J" "International Table Calorie" )
- ( Btu "1055.05585262 J" "International Table Btu" )
- ( eV "ech V" "Electron volt" )
- ( ev "eV" "Electron volt" )
- ( therm "105506000 J" "EEC therm" )
- ( invcm "h c/cm" "Energy in inverse centimeters" )
- ( Kayser "invcm" "Kayser (inverse centimeter energy)" )
- ( men "100/invcm" "Inverse energy in meters" )
- ( Hzen "h Hz" "Energy in Hertz")
- ( Ken "k K" "Energy in Kelvins")
- ;; ( invcm "eV / 8065.47835185" "Energy in inverse centimeters" )
- ;; ( Hzen "eV / 2.41796958004e14" "Energy in Hertz")
- ;; ( Ken "eV / 11604.7967327" "Energy in Kelvins")
-
- ;; Power
- ( W "J/s" "*Watt" )
- ( hp "745.7 W" "Horsepower" )
-
- ;; Temperature
- ( K nil "*Degree Kelvin" K )
- ( dK "K" "Degree Kelvin" K )
- ( degK "K" "Degree Kelvin" K )
- ( dC "K" "Degree Celsius" C )
- ( degC "K" "Degree Celsius" C )
- ( dF "(5/9) K" "Degree Fahrenheit" F )
- ( degF "(5/9) K" "Degree Fahrenheit" F )
-
- ;; Pressure
- ( Pa "N/m^2" "*Pascal" )
- ( bar "1e5 Pa" "Bar" )
- ( atm "101325 Pa" "Standard atmosphere" )
- ( torr "atm/760" "Torr" )
- ( mHg "1000 torr" "Meter of mercury" )
- ( inHg "25.4 mmHg" "Inch of mercury" )
- ( inH2O "248.84 Pa" "Inch of water" )
- ( psi "6894.75729317 Pa" "Pound per square inch" )
-
- ;; Viscosity
- ( P "0.1 Pa s" "*Poise" )
- ( St "1e-4 m^2/s" "Stokes" )
-
- ;; Electromagnetism
- ( A nil "*Ampere" )
- ( C "A s" "Coulomb" )
- ( Fdy "ech Nav" "Faraday" )
- ( e "1.60217733e-19 C" "Elementary charge" )
- ( ech "1.60217733e-19 C" "Elementary charge" )
- ( V "W/A" "Volt" )
- ( ohm "V/A" "Ohm" )
- ( mho "A/V" "Mho" )
- ( S "A/V" "Siemens" )
- ( F "C/V" "Farad" )
- ( H "Wb/A" "Henry" )
- ( T "Wb/m^2" "Tesla" )
- ( G "1e-4 T" "Gauss" )
- ( Wb "V s" "Weber" )
-
- ;; Luminous intensity
- ( cd nil "*Candela" )
- ( sb "1e4 cd/m^2" "Stilb" )
- ( lm "cd sr" "Lumen" )
- ( lx "lm/m^2" "Lux" )
- ( ph "1e4 lx" "Phot" )
- ( fc "10.76 lx" "Footcandle" )
- ( lam "1e4 lm/m^2" "Lambert" )
- ( flam "1.07639104e-3 lam" "Footlambert" )
-
- ;; Radioactivity
- ( Bq "1/s" "*Becquerel" )
- ( Ci "3.7e10 Bq" "Curie" )
- ( Gy "J/kg" "Gray" )
- ( Sv "Gy" "Sievert" )
- ( R "2.58e-4 C/kg" "Roentgen" )
- ( rd ".01 Gy" "Rad" )
- ( rem "rd" "Rem" )
-
- ;; Amount of substance
- ( mol nil "*Mole" )
-
- ;; Plane angle
- ( rad nil "*Radian" )
- ( circ "2 pi rad" "Full circle" )
- ( rev "circ" "Full revolution" )
- ( deg "circ/360" "Degree" )
- ( arcmin "deg/60" "Arc minute" )
- ( arcsec "arcmin/60" "Arc second" )
- ( grad "circ/400" "Grade" )
- ( rpm "rev/min" "Revolutions per minute" )
-
- ;; Solid angle
- ( sr nil "*Steradian" )
-
- ;; Other physical quantities (Physics Letters B239, 1 (1990))
- ( h "6.6260755e-34 J s" "*Planck's constant" )
- ( hbar "h / 2 pi" "Planck's constant" )
- ( mu0 "4 pi 1e-7 H/m" "Permeability of vacuum" )
- ( Grav "6.67259e-11 N m^2/kg^2" "Gravitational constant" )
- ( Nav "6.0221367e23 / mol" "Avagadro's constant" )
- ( me "0.51099906 MeV/c^2" "Electron rest mass" )
- ( mp "1.007276470 amu" "Proton rest mass" )
- ( mn "1.008664904 amu" "Neutron rest mass" )
- ( mu "0.113428913 amu" "Muon rest mass" )
- ( Ryd "1.0973731571e5 invcm" "Rydberg's constant" )
- ( k "1.3806513e-23 J/K" "Boltzmann's constant" )
- ( fsc "1 / 137.0359895" "Fine structure constant" )
- ( muB "5.78838263e-11 MeV/T" "Bohr magneton" )
- ( muN "3.15245166e-14 MeV/T" "Nuclear magneton" )
- ( mue "1.001159652193 muB" "Electron magnetic moment" )
- ( mup "2.792847386 muN" "Proton magnetic moment" )
- ( R0 "Nav k" "Molar gas constant" )
- ( V0 "22.413992 L/mol" "Standard volume of ideal gas" )
- ))
-
-
- (defvar math-additional-units nil
- "*Additional units table for user-defined units.
- Must be formatted like math-standard-units.
- If this is changed, be sure to set math-units-table to nil to ensure
- that the combined units table will be rebuilt.")
-
- (defvar math-unit-prefixes
- '( ( ?E (float 1 18) "Exa" )
- ( ?P (float 1 15) "Peta" )
- ( ?T (float 1 12) "Tera" )
- ( ?G (float 1 9) "Giga" )
- ( ?M (float 1 6) "Mega" )
- ( ?k (float 1 3) "Kilo" )
- ( ?K (float 1 3) "Kilo" )
- ( ?h (float 1 2) "Hecto" )
- ( ?H (float 1 2) "Hecto" )
- ( ?D (float 1 1) "Deka" )
- ( 0 (float 1 0) nil )
- ( ?d (float 1 -1) "Deci" )
- ( ?c (float 1 -2) "Centi" )
- ( ?m (float 1 -3) "Milli" )
- ( ?u (float 1 -6) "Micro" )
- ( ?n (float 1 -9) "Nano" )
- ( ?p (float 1 -12) "Pico" )
- ( ?f (float 1 -15) "Femto" )
- ( ?a (float 1 -18) "Atto" )
- ))
-
- (defvar math-standard-units-systems
- '( ( base nil )
- ( si ( ( g '(* (var kg var-kg) (float 1 -3)) ) ) )
- ( mks ( ( g '(* (var kg var-kg) (float 1 -3)) ) ) )
- ( cgs ( ( m '(* (var cm var-cm) 100 ) ) ) )
- ))
-
- (defvar math-units-table nil
- "Internal units table derived from math-defined-units.
- Entries are (SYMBOL EXPR DOC-STRING TEMP-TYPE BASE-UNITS).")
-
- (defvar math-units-table-buffer-valid nil)
-
-
- (defun math-build-units-table ()
- (or math-units-table
- (let* ((combined-units (append math-additional-units
- math-standard-units))
- (unit-list (mapcar 'car combined-units))
- tab)
- (message "Building units table...")
- (setq math-units-table-buffer-valid nil)
- (setq tab (mapcar (function
- (lambda (x)
- (list (car x)
- (and (nth 1 x)
- (if (stringp (nth 1 x))
- (let ((exp (math-read-plain-expr
- (nth 1 x))))
- (if (eq (car-safe exp) 'error)
- (error "Format error in definition of %s in units table: %s"
- (car x) (nth 2 exp))
- exp))
- (nth 1 x)))
- (nth 2 x)
- (nth 3 x)
- (and (not (nth 1 x))
- (list (cons (car x) 1))))))
- combined-units))
- (let ((math-units-table tab))
- (mapcar 'math-find-base-units tab))
- (message "Building units table...done")
- (setq math-units-table tab)))
- )
-
- (defun math-find-base-units (entry)
- (if (eq (nth 4 entry) 'boom)
- (error "Circular definition involving unit %s" (car entry)))
- (or (nth 4 entry)
- (let (base)
- (setcar (nthcdr 4 entry) 'boom)
- (math-find-base-units-rec (nth 1 entry) 1)
- '(or base
- (error "Dimensionless definition for unit %s" (car entry)))
- (while (eq (cdr (car base)) 0)
- (setq base (cdr base)))
- (let ((b base))
- (while (cdr b)
- (if (eq (cdr (car (cdr b))) 0)
- (setcdr b (cdr (cdr b)))
- (setq b (cdr b)))))
- (setq base (sort base 'math-compare-unit-names))
- (setcar (nthcdr 4 entry) base)
- base))
- )
-
- (defun math-compare-unit-names (a b)
- (memq (car b) (cdr (memq (car a) unit-list)))
- )
-
- (defun math-find-base-units-rec (expr pow)
- (let ((u (math-check-unit-name expr)))
- (cond (u
- (let ((ulist (math-find-base-units u)))
- (while ulist
- (let ((p (* (cdr (car ulist)) pow))
- (old (assq (car (car ulist)) base)))
- (if old
- (setcdr old (+ (cdr old) p))
- (setq base (cons (cons (car (car ulist)) p) base))))
- (setq ulist (cdr ulist)))))
- ((math-scalarp expr))
- ((and (eq (car expr) '^)
- (integerp (nth 2 expr)))
- (math-find-base-units-rec (nth 1 expr) (* pow (nth 2 expr))))
- ((eq (car expr) '*)
- (math-find-base-units-rec (nth 1 expr) pow)
- (math-find-base-units-rec (nth 2 expr) pow))
- ((eq (car expr) '/)
- (math-find-base-units-rec (nth 1 expr) pow)
- (math-find-base-units-rec (nth 2 expr) (- pow)))
- ((eq (car expr) 'neg)
- (math-find-base-units-rec (nth 1 expr) pow))
- ((eq (car expr) '+)
- (math-find-base-units-rec (nth 1 expr) pow))
- ((eq (car expr) 'var)
- (or (eq (nth 1 expr) 'pi)
- (error "Unknown name %s in defining expression for unit %s"
- (nth 1 expr) (car entry))))
- (t (error "Malformed defining expression for unit %s" (car entry)))))
- )
-
-
- (defun math-units-in-expr-p (expr sub-exprs)
- (and (consp expr)
- (if (eq (car expr) 'var)
- (math-check-unit-name expr)
- (and (or sub-exprs
- (memq (car expr) '(* / ^)))
- (or (math-units-in-expr-p (nth 1 expr) sub-exprs)
- (math-units-in-expr-p (nth 2 expr) sub-exprs)))))
- )
-
- (defun math-only-units-in-expr-p (expr)
- (and (consp expr)
- (if (eq (car expr) 'var)
- (math-check-unit-name expr)
- (if (memq (car expr) '(* /))
- (and (math-only-units-in-expr-p (nth 1 expr))
- (math-only-units-in-expr-p (nth 2 expr)))
- (and (eq (car expr) '^)
- (and (math-only-units-in-expr-p (nth 1 expr))
- (math-realp (nth 2 expr)))))))
- )
-
- (defun math-single-units-in-expr-p (expr)
- (cond ((math-scalarp expr) nil)
- ((eq (car expr) 'var)
- (math-check-unit-name expr))
- ((eq (car expr) '*)
- (let ((u1 (math-single-units-in-expr-p (nth 1 expr)))
- (u2 (math-single-units-in-expr-p (nth 2 expr))))
- (or (and u1 u2 'wrong)
- u1
- u2)))
- ((eq (car expr) '/)
- (if (math-units-in-expr-p (nth 2 expr) nil)
- 'wrong
- (math-single-units-in-expr-p (nth 1 expr))))
- (t 'wrong))
- )
-
- (defun math-check-unit-name (v)
- (and (eq (car-safe v) 'var)
- (or (assq (nth 1 v) (or math-units-table (math-build-units-table)))
- (let ((name (symbol-name (nth 1 v))))
- (and (> (length name) 1)
- (assq (aref name 0) math-unit-prefixes)
- (or (assq (intern (substring name 1)) math-units-table)
- (and (eq (aref name 0) ?M)
- (> (length name) 3)
- (eq (aref name 1) ?e)
- (eq (aref name 2) ?g)
- (assq (intern (substring name 3))
- math-units-table)))))))
- )
-
-
- (defun math-to-standard-units (expr which-standard)
- (math-to-standard-rec expr)
- )
-
- (defun math-to-standard-rec (expr)
- (if (eq (car-safe expr) 'var)
- (let ((u (math-check-unit-name expr))
- (base (nth 1 expr)))
- (if u
- (progn
- (if (nth 1 u)
- (setq expr (math-to-standard-rec (nth 1 u)))
- (let ((st (assq (car u) which-standard)))
- (if st
- (setq expr (nth 1 st))
- (setq expr (list 'var (car u)
- (intern (concat "var-"
- (symbol-name
- (car u)))))))))
- (or (null u)
- (eq base (car u))
- (setq expr (list '*
- (nth 1 (assq (aref (symbol-name base) 0)
- math-unit-prefixes))
- expr)))
- expr)
- (if (eq base 'pi)
- (math-pi)
- expr)))
- (if (Math-primp expr)
- expr
- (cons (car expr)
- (mapcar 'math-to-standard-rec (cdr expr)))))
- )
-
- (defun math-apply-units (expr units ulist &optional pure)
- (if ulist
- (let ((new 0)
- value)
- (setq expr (math-simplify-units expr))
- (or (math-numberp expr)
- (error "Incompatible units"))
- (while (cdr ulist)
- (setq value (math-div expr (nth 1 (car ulist)))
- value (math-floor (let ((calc-internal-prec
- (1- calc-internal-prec)))
- (math-normalize value)))
- new (math-add new (math-mul value (car (car ulist))))
- expr (math-sub expr (math-mul value (nth 1 (car ulist))))
- ulist (cdr ulist)))
- (math-add new (math-mul (math-div expr (nth 1 (car ulist)))
- (car (car ulist)))))
- (math-simplify-units (if pure
- expr
- (list '* expr units))))
- )
-
- (defun math-decompose-units (units)
- (let ((u (math-check-unit-name units)))
- (and u (eq (car-safe (nth 1 u)) '+)
- (setq units (nth 1 u))))
- (setq units (calcFunc-expand units))
- (and (eq (car-safe units) '+)
- (let ((entry (list units calc-internal-prec calc-prefer-frac)))
- (or (equal entry (car math-decompose-units-cache))
- (let ((ulist nil)
- (utemp units)
- qty unit)
- (while (eq (car-safe utemp) '+)
- (setq ulist (cons (math-decompose-unit-part (nth 2 utemp))
- ulist)
- utemp (nth 1 utemp)))
- (setq ulist (cons (math-decompose-unit-part utemp) ulist)
- utemp ulist)
- (while (setq utemp (cdr utemp))
- (or (equal (nth 2 (car utemp)) (nth 2 (car ulist)))
- (error "Inconsistent units in sum")))
- (setq math-decompose-units-cache
- (cons entry
- (sort ulist
- (function
- (lambda (x y)
- (not (Math-lessp (nth 1 x)
- (nth 1 y))))))))))
- (cdr math-decompose-units-cache)))
- )
- (setq math-decompose-units-cache nil)
-
- (defun math-decompose-unit-part (unit)
- (cons unit
- (math-is-multiple (math-simplify-units (math-to-standard-units
- unit nil))
- t))
- )
-
- (defun math-find-compatible-unit (expr unit)
- (let ((u (math-check-unit-name unit)))
- (if u
- (math-find-compatible-unit-rec expr 1)))
- )
-
- (defun math-find-compatible-unit-rec (expr pow)
- (cond ((eq (car-safe expr) '*)
- (or (math-find-compatible-unit-rec (nth 1 expr) pow)
- (math-find-compatible-unit-rec (nth 2 expr) pow)))
- ((eq (car-safe expr) '/)
- (or (math-find-compatible-unit-rec (nth 1 expr) pow)
- (math-find-compatible-unit-rec (nth 2 expr) (- pow))))
- ((and (eq (car-safe expr) '^)
- (integerp (nth 2 expr)))
- (math-find-compatible-unit-rec (nth 1 expr) (* pow (nth 2 expr))))
- (t
- (let ((u2 (math-check-unit-name expr)))
- (if (equal (nth 4 u) (nth 4 u2))
- (cons expr pow)))))
- )
-
- (defun math-convert-units (expr new-units &optional pure)
- (math-with-extra-prec 2
- (let ((compat (and (not pure) (math-find-compatible-unit expr new-units)))
- (unit-list nil)
- (math-combining-units nil))
- (if compat
- (math-simplify-units
- (math-mul (math-mul (math-simplify-units
- (math-div expr (math-pow (car compat)
- (cdr compat))))
- (math-pow new-units (cdr compat)))
- (math-simplify-units
- (math-to-standard-units
- (math-pow (math-div (car compat) new-units)
- (cdr compat))
- nil))))
- (if (setq unit-list (math-decompose-units new-units))
- (setq new-units (nth 2 (car unit-list))))
- (if (eq (car-safe expr) '+)
- (setq expr (math-simplify-units expr)))
- (if (math-units-in-expr-p expr t)
- (math-convert-units-rec expr)
- (math-apply-units (math-to-standard-units
- (list '/ expr new-units) nil)
- new-units unit-list pure)))))
- )
-
- (defun math-convert-units-rec (expr)
- (if (math-units-in-expr-p expr nil)
- (math-apply-units (math-to-standard-units (list '/ expr new-units) nil)
- new-units unit-list pure)
- (if (Math-primp expr)
- expr
- (cons (car expr)
- (mapcar 'math-convert-units-rec (cdr expr)))))
- )
-
- (defun math-convert-temperature (expr old new &optional pure)
- (let* ((units (math-single-units-in-expr-p expr))
- (uold (if old
- (if (or (null units)
- (equal (nth 1 old) (car units)))
- (math-check-unit-name old)
- (error "Inconsistent temperature units"))
- units))
- (unew (math-check-unit-name new)))
- (or (and (consp unew) (nth 3 unew))
- (error "Not a valid temperature unit"))
- (or (and (consp uold) (nth 3 uold))
- (error "Not a pure temperature expression"))
- (let ((v (car uold)))
- (setq expr (list '/ expr (list 'var v
- (intern (concat "var-"
- (symbol-name v)))))))
- (or (eq (nth 3 uold) (nth 3 unew))
- (cond ((eq (nth 3 uold) 'K)
- (setq expr (list '- expr '(float 27315 -2)))
- (if (eq (nth 3 unew) 'F)
- (setq expr (list '+ (list '* expr '(frac 9 5)) 32))))
- ((eq (nth 3 uold) 'C)
- (if (eq (nth 3 unew) 'F)
- (setq expr (list '+ (list '* expr '(frac 9 5)) 32))
- (setq expr (list '+ expr '(float 27315 -2)))))
- (t
- (setq expr (list '* (list '- expr 32) '(frac 5 9)))
- (if (eq (nth 3 unew) 'K)
- (setq expr (list '+ expr '(float 27315 -2)))))))
- (if pure
- expr
- (list '* expr new)))
- )
-
-
-
- (defun math-simplify-units (a)
- (let ((math-simplifying-units t)
- (calc-matrix-mode 'scalar))
- (math-simplify a))
- )
- (fset 'calcFunc-usimplify (symbol-function 'math-simplify-units))
-
- (math-defsimplify (+ -)
- (and math-simplifying-units
- (math-units-in-expr-p (nth 1 expr) nil)
- (let* ((units (math-extract-units (nth 1 expr)))
- (ratio (math-simplify (math-to-standard-units
- (list '/ (nth 2 expr) units) nil))))
- (if (math-units-in-expr-p ratio nil)
- (progn
- (calc-record-why "*Inconsistent units" expr)
- expr)
- (list '* (math-add (math-remove-units (nth 1 expr))
- (if (eq (car expr) '-) (math-neg ratio) ratio))
- units))))
- )
-
- (math-defsimplify *
- (math-simplify-units-prod)
- )
-
- (defun math-simplify-units-prod ()
- (and math-simplifying-units
- calc-autorange-units
- (Math-realp (nth 1 expr))
- (let* ((num (math-float (nth 1 expr)))
- (xpon (calcFunc-xpon num))
- (unitp (cdr (cdr expr)))
- (unit (car unitp))
- (pow (if (eq (car expr) '*) 1 -1))
- u)
- (and (eq (car-safe unit) '*)
- (setq unitp (cdr unit)
- unit (car unitp)))
- (and (eq (car-safe unit) '^)
- (integerp (nth 2 unit))
- (setq pow (* pow (nth 2 unit))
- unitp (cdr unit)
- unit (car unitp)))
- (and (setq u (math-check-unit-name unit))
- (integerp xpon)
- (or (< xpon 0)
- (>= xpon (if (eq (car u) 'm) 1 3)))
- (let* ((uxpon 0)
- (pref (if (< pow 0)
- (reverse math-unit-prefixes)
- math-unit-prefixes))
- (p pref)
- pxpon pname)
- (or (eq (car u) (nth 1 unit))
- (setq uxpon (* pow
- (nth 2 (nth 1 (assq
- (aref (symbol-name
- (nth 1 unit)) 0)
- math-unit-prefixes))))))
- (setq xpon (+ xpon uxpon))
- (while (and p
- (or (memq (car (car p)) '(?d ?D ?h ?H))
- (and (eq (car (car p)) ?c)
- (not (eq (car u) 'm)))
- (< xpon (setq pxpon (* (nth 2 (nth 1 (car p)))
- pow)))
- (progn
- (setq pname (math-build-var-name
- (if (eq (car (car p)) 0)
- (car u)
- (concat (char-to-string
- (car (car p)))
- (symbol-name
- (car u))))))
- (and (/= (car (car p)) 0)
- (assq (nth 1 pname)
- math-units-table)))))
- (setq p (cdr p)))
- (and p
- (/= pxpon uxpon)
- (or (not (eq p pref))
- (< xpon (+ pxpon (* (math-abs pow) 3))))
- (progn
- (setcar (cdr expr)
- (let ((calc-prefer-frac nil))
- (calcFunc-scf (nth 1 expr)
- (- uxpon pxpon))))
- (setcar unitp pname)
- expr))))))
- )
-
- (math-defsimplify /
- (and math-simplifying-units
- (let ((np (cdr expr))
- (try-cancel-units 0)
- n nn)
- (setq n (if (eq (car-safe (nth 2 expr)) '*)
- (cdr (nth 2 expr))
- (nthcdr 2 expr)))
- (if (math-realp (car n))
- (progn
- (setcar (cdr expr) (math-mul (nth 1 expr)
- (let ((calc-prefer-frac nil))
- (math-div 1 (car n)))))
- (setcar n 1)))
- (while (eq (car-safe (setq n (car np))) '*)
- (math-simplify-units-divisor (cdr n) (cdr (cdr expr)))
- (setq np (cdr (cdr n))))
- (math-simplify-units-divisor np (cdr (cdr expr)))
- (if (eq try-cancel-units 0)
- (let* ((math-simplifying-units nil)
- (base (math-simplify (math-to-standard-units expr nil))))
- (if (Math-numberp base)
- (setq expr base))))
- (if (eq (car-safe expr) '/)
- (math-simplify-units-prod))
- expr))
- )
-
- (defun math-simplify-units-divisor (np dp)
- (let ((n (car np))
- d dd temp)
- (while (eq (car-safe (setq d (car dp))) '*)
- (if (setq temp (math-simplify-units-quotient n (nth 1 d)))
- (progn
- (setcar np (setq n temp))
- (setcar (cdr d) 1)))
- (setq dp (cdr (cdr d))))
- (if (setq temp (math-simplify-units-quotient n d))
- (progn
- (setcar np (setq n temp))
- (setcar dp 1))))
- )
-
- ;; Simplify, e.g., "in / cm" to "2.54" in a units expression.
- (defun math-simplify-units-quotient (n d)
- (let ((pow1 1)
- (pow2 1))
- (and (eq (car-safe n) '^)
- (integerp (nth 2 n))
- (setq pow1 (nth 2 n) n (nth 1 n)))
- (and (eq (car-safe d) '^)
- (integerp (nth 2 d))
- (setq pow2 (nth 2 d) d (nth 1 d)))
- (let ((un (math-check-unit-name n))
- (ud (math-check-unit-name d)))
- (and un ud
- (if (and (equal (nth 4 un) (nth 4 ud))
- (eq pow1 pow2))
- (math-to-standard-units (list '/ n d) nil)
- (let (ud1)
- (setq un (nth 4 un)
- ud (nth 4 ud))
- (while un
- (setq ud1 ud)
- (while ud1
- (and (eq (car (car un)) (car (car ud1)))
- (setq try-cancel-units
- (+ try-cancel-units
- (- (* (cdr (car un)) pow1)
- (* (cdr (car ud)) pow2)))))
- (setq ud1 (cdr ud1)))
- (setq un (cdr un)))
- nil)))))
- )
-
- (math-defsimplify ^
- (and math-simplifying-units
- (math-realp (nth 2 expr))
- (if (memq (car-safe (nth 1 expr)) '(* /))
- (list (car (nth 1 expr))
- (list '^ (nth 1 (nth 1 expr)) (nth 2 expr))
- (list '^ (nth 2 (nth 1 expr)) (nth 2 expr)))
- (math-simplify-units-pow (nth 1 expr) (nth 2 expr))))
- )
-
- (math-defsimplify calcFunc-sqrt
- (and math-simplifying-units
- (if (memq (car-safe (nth 1 expr)) '(* /))
- (list (car (nth 1 expr))
- (list 'calcFunc-sqrt (nth 1 (nth 1 expr)))
- (list 'calcFunc-sqrt (nth 2 (nth 1 expr))))
- (math-simplify-units-pow (nth 1 expr) '(frac 1 2))))
- )
-
- (math-defsimplify (calcFunc-floor
- calcFunc-ceil
- calcFunc-round
- calcFunc-rounde
- calcFunc-roundu
- calcFunc-trunc
- calcFunc-float
- calcFunc-frac
- calcFunc-abs
- calcFunc-clean)
- (and math-simplifying-units
- (= (length expr) 2)
- (if (math-only-units-in-expr-p (nth 1 expr))
- (nth 1 expr)
- (if (and (memq (car-safe (nth 1 expr)) '(* /))
- (or (math-only-units-in-expr-p
- (nth 1 (nth 1 expr)))
- (math-only-units-in-expr-p
- (nth 2 (nth 1 expr)))))
- (list (car (nth 1 expr))
- (cons (car expr)
- (cons (nth 1 (nth 1 expr))
- (cdr (cdr expr))))
- (cons (car expr)
- (cons (nth 2 (nth 1 expr))
- (cdr (cdr expr)))))))))
-
- (defun math-simplify-units-pow (a pow)
- (if (and (eq (car-safe a) '^)
- (math-check-unit-name (nth 1 a))
- (math-realp (nth 2 a)))
- (list '^ (nth 1 a) (math-mul pow (nth 2 a)))
- (let* ((u (math-check-unit-name a))
- (pf (math-to-simple-fraction pow))
- (d (and (eq (car-safe pf) 'frac) (nth 2 pf))))
- (and u d
- (math-units-are-multiple u d)
- (list '^ (math-to-standard-units a nil) pow))))
- )
-
-
- (defun math-units-are-multiple (u n)
- (setq u (nth 4 u))
- (while (and u (= (% (cdr (car u)) n) 0))
- (setq u (cdr u)))
- (null u)
- )
-
- (math-defsimplify calcFunc-sin
- (and math-simplifying-units
- (math-units-in-expr-p (nth 1 expr) nil)
- (let ((rad (math-simplify-units
- (math-evaluate-expr
- (math-to-standard-units (nth 1 expr) nil))))
- (calc-angle-mode 'rad))
- (and (eq (car-safe rad) '*)
- (math-realp (nth 1 rad))
- (eq (car-safe (nth 2 rad)) 'var)
- (eq (nth 1 (nth 2 rad)) 'rad)
- (list 'calcFunc-sin (nth 1 rad)))))
- )
-
- (math-defsimplify calcFunc-cos
- (and math-simplifying-units
- (math-units-in-expr-p (nth 1 expr) nil)
- (let ((rad (math-simplify-units
- (math-evaluate-expr
- (math-to-standard-units (nth 1 expr) nil))))
- (calc-angle-mode 'rad))
- (and (eq (car-safe rad) '*)
- (math-realp (nth 1 rad))
- (eq (car-safe (nth 2 rad)) 'var)
- (eq (nth 1 (nth 2 rad)) 'rad)
- (list 'calcFunc-cos (nth 1 rad)))))
- )
-
- (math-defsimplify calcFunc-tan
- (and math-simplifying-units
- (math-units-in-expr-p (nth 1 expr) nil)
- (let ((rad (math-simplify-units
- (math-evaluate-expr
- (math-to-standard-units (nth 1 expr) nil))))
- (calc-angle-mode 'rad))
- (and (eq (car-safe rad) '*)
- (math-realp (nth 1 rad))
- (eq (car-safe (nth 2 rad)) 'var)
- (eq (nth 1 (nth 2 rad)) 'rad)
- (list 'calcFunc-tan (nth 1 rad)))))
- )
-
-
- (defun math-remove-units (expr)
- (if (math-check-unit-name expr)
- 1
- (if (Math-primp expr)
- expr
- (cons (car expr)
- (mapcar 'math-remove-units (cdr expr)))))
- )
-
- (defun math-extract-units (expr)
- (if (memq (car-safe expr) '(* /))
- (cons (car expr)
- (mapcar 'math-extract-units (cdr expr)))
- (if (math-check-unit-name expr) expr 1))
- )
-
- (defun math-build-units-table-buffer (enter-buffer)
- (if (not (and math-units-table math-units-table-buffer-valid
- (get-buffer "*Units Table*")))
- (let ((buf (get-buffer-create "*Units Table*"))
- (uptr (math-build-units-table))
- (calc-language (if (eq calc-language 'big) nil calc-language))
- (calc-float-format '(float 0))
- (calc-group-digits nil)
- (calc-number-radix 10)
- (calc-point-char ".")
- (std nil)
- u name shadowed)
- (save-excursion
- (message "Formatting units table...")
- (set-buffer buf)
- (setq buffer-read-only nil)
- (erase-buffer)
- (insert "Calculator Units Table:\n\n")
- (insert "Unit Type Definition Description\n\n")
- (while uptr
- (setq u (car uptr)
- name (nth 2 u))
- (if (eq (car u) 'm)
- (setq std t))
- (setq shadowed (and std (assq (car u) math-additional-units)))
- (if (and name
- (> (length name) 1)
- (eq (aref name 0) ?\*))
- (progn
- (or (eq uptr math-units-table)
- (insert "\n"))
- (setq name (substring name 1))))
- (insert " ")
- (and shadowed (insert "("))
- (insert (symbol-name (car u)))
- (and shadowed (insert ")"))
- (if (nth 3 u)
- (progn
- (indent-to 10)
- (insert (symbol-name (nth 3 u))))
- (or std
- (progn
- (indent-to 10)
- (insert "U"))))
- (indent-to 14)
- (and shadowed (insert "("))
- (if (nth 1 u)
- (insert (math-format-value (nth 1 u) 80))
- (insert (symbol-name (car u))))
- (and shadowed (insert ")"))
- (indent-to 41)
- (insert " ")
- (if name
- (insert name))
- (if shadowed
- (insert " (redefined above)")
- (or (nth 1 u)
- (insert " (base unit)")))
- (insert "\n")
- (setq uptr (cdr uptr)))
- (insert "\n\nUnit Prefix Table:\n\n")
- (setq uptr math-unit-prefixes)
- (while uptr
- (setq u (car uptr))
- (insert " " (char-to-string (car u)))
- (if (equal (nth 1 u) (nth 1 (nth 1 uptr)))
- (insert " " (char-to-string (car (car (setq uptr (cdr uptr)))))
- " ")
- (insert " "))
- (insert "10^" (int-to-string (nth 2 (nth 1 u))))
- (indent-to 15)
- (insert " " (nth 2 u) "\n")
- (while (eq (car (car (setq uptr (cdr uptr)))) 0)))
- (insert "\n")
- (setq buffer-read-only t)
- (message "Formatting units table...done"))
- (setq math-units-table-buffer-valid t)
- (let ((oldbuf (current-buffer)))
- (set-buffer buf)
- (goto-char (point-min))
- (set-buffer oldbuf))
- (if enter-buffer
- (pop-to-buffer buf)
- (display-buffer buf)))
- (if enter-buffer
- (pop-to-buffer (get-buffer "*Units Table*"))
- (display-buffer (get-buffer "*Units Table*"))))
- )
-
-
-
-
-