1;;; -*- Mode:LISP; Package:MACSYMA -*-
2;;
3;; This program is free software; you can redistribute it and/or
4;; modify it under the terms of the GNU General Public License as
5;; published by the Free Software Foundation; either version 2 of
6;; the License, or (at your option) any later version.
7;;
8;; This program is distributed in the hope that it will be
9;; useful, but WITHOUT ANY WARRANTY; without even the implied
10;; warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
11;; PURPOSE.  See the GNU General Public License for more details.
12;;
13;; Comments: TeX formatting module for itensor.lisp
14;;
15
16(in-package :maxima)
17
18;; top level command the result of tex'ing the expression x.
19;; Lots of messing around here to get C-labels verbatim printed
20;; and function definitions verbatim "ground"
21
22;(defmspec $tex(l) ;; mexplabel, and optional filename
23;  (let ((args (cdr l)))
24;  (apply 'tex1  args)))
25(defprop $dl "\\Delta" texword)
26(defprop $divg "(\\nabla\\cdot G)" texword)
27(defprop $og "(\\Omega\\cdot G)" texword)
28(defprop $dl_1 "\\Delta^{\\star}" texword)
29(defprop $dl_c "\\Delta_{\\chi}" texword)
30(defprop $omega "\\Omega" texword)
31(defprop $om "\\Omega^{\\star}" texword)
32(defprop $dlt "\\delta" texword)
33(defprop $phi  "\\Phi" texword)
34(defprop $d_t  "\\frac{\\partial}{\\partial t}" texword)
35
36(defprop $kdelta "\\delta" texword)
37(defprop %kdelta "\\delta" texword)
38(defprop $icurvature "\\cal{R}" texword)
39(defprop %icurvature "\\cal{R}" texword)
40(defprop $ichr1 "\\Gamma" texword)
41(defprop %ichr1 "\\Gamma" texword)
42(defprop $ichr2 "\\Gamma" texword)
43(defprop %ichr2 "\\Gamma" texword)
44;(defprop $icc1 "c" texword)
45;(defprop %icc1 "c" texword)
46;(defprop $icc2 "c" texword)
47;(defprop %icc2 "c" texword)
48(defprop $ifc1 "\\gamma" texword)
49(defprop %ifc1 "\\gamma" texword)
50(defprop $ifc2 "\\gamma" texword)
51(defprop %ifc2 "\\gamma" texword)
52(defprop $ifb "\\lambda" texword)
53(defprop %ifb "\\lambda" texword)
54;(defprop $ifr "e" texword)
55;(defprop %ifr "e" texword)
56;(defprop $ifri "e" texword)
57;(defprop %ifri "e" texword)
58(defprop $ifg "\\nu" texword)
59(defprop $levi_civita  "\\varepsilon" texword)
60(defprop %levi_civita  "\\varepsilon" texword)
61
62(defun $tentex (x) (meval (list '$tex (tenreform x))))
63
64(defun tenreform (x)
65  (cond
66    ((atom x) x)
67    ((atom (car x)) (cons (car x) (tenreform (cdr x))))
68    (
69      (rpobj x)
70      (
71        (lambda (u v) (cond (v (list '(mexpt simp) u v)) (t u)))
72        (
73          (lambda (y)
74            (cond (y (cons (cons (name x) '(simp array)) y)) (t (name x)))
75          )
76          (append
77            (and (covi x) (list (cons '(mtimes simp) (covi x))))
78            (and
79              (deri x)
80              (list
81                (cons
82                  '(mtimes simp)
83                  (append (and (not (covi x)) (deri x) '(",")) (deri x))
84                )
85              )
86            )
87          )
88        )
89        (and (conti x) (cons '(mtimes simp) (conti x)))
90      )
91    )
92    (t (cons (tenreform (car x)) (tenreform (cdr x))))
93  )
94)
95