annotate lisp/float-sup.el @ 1332:6aa23bb3da6b

[xemacs-hg @ 2003-03-02 02:18:05 by ben] To: xemacs-patches@xemacs.org PROBLEMS: Include nt/PROBLEMS and update. Add note about incremental linking badness. cmdloop.el, custom.el, dumped-lisp.el, files.el, keydefs.el, keymap.el, lisp-mode.el, make-docfile.el, replace.el, simple.el, subr.el, view-less.el, wid-edit.el: Lots of syncing with FSF 21.2. Use if-fboundp in wid-edit.el. New file newcomment.el from FSF. internals/internals.texi: Fix typo. (Build-Time Dependencies): New node. PROBLEMS: Delete. config.inc.samp, xemacs.mak: Eliminate HAVE_VC6, use SUPPORT_EDIT_AND_CONTINUE in its place. No incremental linking unless SUPPORT_EDIT_AND_CONTINUE, since it can cause nasty crashes in pdump. Put warnings about this in config.inc.samp. Report the full compile flags used for src and lib-src in the Installation output. alloc.c, lisp.h, ralloc.c, regex.c: Use ALLOCA() in regex.c to avoid excessive stack allocation. Also fix subtle problem with REL_ALLOC() -- any call to malloc() (direct or indirect) may relocate rel-alloced data, causing buffer text to shift. After any such call, regex must update all its pointers to such data. Add a system, when ERROR_CHECK_MALLOC, whereby regex.c indicates all the places it is prepared to handle malloc()/realloc()/free(), and any calls anywhere in XEmacs outside of this will trigger an abort. alloc.c, dialog-msw.c, eval.c, event-stream.c, general-slots.h, insdel.c, lisp.h, menubar-msw.c, menubar-x.c: Change *run_hook*_trapping_problems to take a warning class, not a string. Factor out code to issue warnings, add flag to call_trapping_problems() to postpone warning issue, and make *run_hook*_trapping_problems issue their own warnings tailored to the hook, postponed in the case of safe_run_hook_trapping_problems() so that the appropriate message can be issued about resetting to nil only when not `quit'. Make record_unwind_protect_restoring_int() non-static. dumper.c: Issue notes about incremental linking problems under Windows. fileio.c: Mule-ize encrypt/decrypt-string code. text.h: Spacing changes.
author ben
date Sun, 02 Mar 2003 02:18:12 +0000
parents 576fb035e263
children 308d34e9f07d
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1 ;;; float-sup.el --- detect absence of floating-point support in XEmacs runtime
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2
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3 ;; Copyright (C) 1985-7, 1997 Free Software Foundation, Inc.
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4
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5 ;; Maintainer: FSF
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6 ;; Keywords: internal, dumped
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7
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8 ;; This file is part of XEmacs.
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9
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10 ;; XEmacs is free software; you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by
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12 ;; the Free Software Foundation; either version 2, or (at your option)
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13 ;; any later version.
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14
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15 ;; XEmacs is distributed in the hope that it will be useful, but
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16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 ;; General Public License for more details.
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19
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs; see the file COPYING. If not, write to the Free
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22 ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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23 ;; 02111-1307, USA.
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24
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25 ;;; Synched up with: FSF 19.34.
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26
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27 ;;; Code:
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28
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29 ;; This file is dumped with XEmacs.
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30
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31 ;; Provide a meaningful error message if we are running on
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32 ;; bare (non-float) emacs.
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33 ;; Can't test for 'floatp since that may be defined by float-imitation
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34 ;; packages like float.el in this very directory.
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35
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36 ;; XEmacs change
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37 (or (featurep 'lisp-float-type)
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38 (error "Floating point was disabled at compile time"))
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39
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40 ;; define pi and e via math-lib calls. (much less prone to killer typos.)
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41 (defconst pi (* 4 (atan 1)) "The value of Pi (3.1415926...)")
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42 (defconst e (exp 1) "The value of e (2.7182818...)")
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43
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44 ;; Careful when editing this file ... typos here will be hard to spot.
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45 ;; (defconst pi 3.14159265358979323846264338327
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46 ;; "The value of Pi (3.14159265358979323846264338327...)")
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47
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48 (defconst degrees-to-radians (/ pi 180.0)
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49 "Degrees to radian conversion constant")
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50 (defconst radians-to-degrees (/ 180.0 pi)
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51 "Radian to degree conversion constant")
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52
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53 ;; these expand to a single multiply by a float when byte compiled
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54
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55 (defmacro degrees-to-radians (x)
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56 "Convert ARG from degrees to radians."
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57 (list '* (/ pi 180.0) x))
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58 (defmacro radians-to-degrees (x)
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59 "Convert ARG from radians to degrees."
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60 (list '* (/ 180.0 pi) x))
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61
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62 ;; Provided in C code in XEmacs
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63 ;; (provide 'lisp-float-type)
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64
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65 ;;; float-sup.el ends here