annotate lisp/float-sup.el @ 5327:d1b17a33450b

Move the heavy lifting from cl-seq.el to C. src/ChangeLog addition: 2010-12-30 Aidan Kehoe <kehoea@parhasard.net> Move the heavy lifting from cl-seq.el to C, finally making those functions first-class XEmacs citizens, with circularity checking, built-in support for tests other than #'eql, and as much compatibility with current Common Lisp as Paul Dietz' tests require. * fns.c (check_eq_nokey, check_eq_key, check_eql_nokey) (check_eql_key, check_equal_nokey, check_equal_key) (check_equalp_nokey, check_equalp_key, check_string_match_nokey) (check_string_match_key, check_other_nokey, check_other_key) (check_if_nokey, check_if_key, check_match_eq_key) (check_match_eql_key, check_match_equal_key) (check_match_equalp_key, check_match_other_key): New. These are basically to provide function pointers to be used by Lisp functions that take TEST, TEST-NOT and KEY arguments. (get_check_match_function_1, get_check_test_function) (get_check_match_function): These functions work out which of the previous list of functions to use, given the keywords supplied by the user. (count_with_tail): New. This is the bones of #'count. (list_count_from_end, string_count_from_end): Utility functions for #'count. (Fcount): New, moved from cl-seq.el. (list_position_cons_before): New. The implementation of #'member*, and important in implementing various other functions. (FmemberX, Fadjoin, FassocX, FrassocX, Fposition, Ffind) (FdeleteX, FremoveX, Fdelete_duplicates, Fremove_duplicates) (Fnsubstitute, Fsubstitute, Fsublis, Fnsublis, Fsubst, Fnsubst) (Ftree_equal, Fmismatch, Fsearch, Fintersection, Fnintersection) (Fsubsetp, Fset_difference, Fnset_difference, Fnunion, Funion) (Fset_exclusive_or, Fnset_exclusive_or): New, moved here from cl-seq.el. (position): New. The implementation of #'find and #'position. (list_delete_duplicates_from_end, subst, sublis, nsublis) (tree_equal, mismatch_from_end, mismatch_list_list) (mismatch_list_string, mismatch_list_array) (mismatch_string_array, mismatch_string_string) (mismatch_array_array, get_mismatch_func): Helper C functions for the Lisp-visible functions. (venn, nvenn): New. The implementation of the main Lisp functions that treat lists as sets. lisp/ChangeLog addition: 2010-12-30 Aidan Kehoe <kehoea@parhasard.net> * cl-seq.el: Move the heavy lifting from this file to C. Dump the cl-parsing-keywords macro, but don't use defun* for the functions we define that do take keywords, dynamic scope lossage makes that not practical. * subr.el (sort, fillarray): Move these aliases here. (map-plist): #'nsublis is now built-in, but at this point #'eql isn't necessarily available as a test; use #'eq. * obsolete.el (cl-delete-duplicates): Make this available for old compiler macros and old code. (memql): Document that this is equivalent to #'member*, and worse. * cl.el (adjoin, subst): Removed. These are in C.
author Aidan Kehoe <kehoea@parhasard.net>
date Thu, 30 Dec 2010 01:59:52 +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