Make #'floor, #'ceiling, #'round, #'truncate conform to Common Lisp. lisp/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * cl-extra.el (ceiling*, floor*, round*, truncate*): Implement these in terms of the C functions; mark them as obsolete. (mod*, rem*): Use #'nth-value with the C functions, not #'nth with the CL emulation functions. man/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * lispref/numbers.texi (Bigfloat Basics): Correct this documentation (ignoring for the moment that it breaks off in mid-sentence). tests/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el: Test the new Common Lisp-compatible rounding functions available in C. (generate-rounding-output): Provide a function useful for generating the data for the rounding functions tests. src/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * floatfns.c (ROUNDING_CONVERT, CONVERT_WITH_NUMBER_TYPES) (CONVERT_WITHOUT_NUMBER_TYPES, MAYBE_TWO_ARGS_BIGNUM) (MAYBE_ONE_ARG_BIGNUM, MAYBE_TWO_ARGS_RATIO) (MAYBE_ONE_ARG_RATIO, MAYBE_TWO_ARGS_BIGFLOAT) (MAYBE_ONE_ARG_BIGFLOAT, MAYBE_EFF, MAYBE_CHAR_OR_MARKER): New macros, used in the implementation of the rounding functions. (ceiling_two_fixnum, ceiling_two_bignum, ceiling_two_ratio) (ceiling_two_bigfloat, ceiling_one_ratio, ceiling_one_bigfloat) (ceiling_two_float, ceiling_one_float, ceiling_one_mundane_arg) (floor_two_fixnum, floor_two_bignum, floor_two_ratio) (floor_two_bigfloat, floor_one_ratio, floor_one_bigfloat) (floor_two_float, floor_one_mundane_arg, round_two_fixnum) (round_two_bignum_1, round_two_bignum, round_two_ratio) (round_one_bigfloat_1, round_two_bigfloat, round_one_ratio) (round_one_bigfloat, round_two_float, round_one_float) (round_one_mundane_arg, truncate_two_fixnum) (truncate_two_bignum, truncate_two_ratio, truncate_two_bigfloat) (truncate_one_ratio, truncate_one_bigfloat, truncate_two_float) (truncate_one_float, truncate_one_mundane_arg): New functions, used in the implementation of the rounding functions. (Fceiling, Ffloor, Fround, Ftruncate, Ffceiling, Fffloor) (Ffround, Fftruncate): Revise to fully support Common Lisp conventions. This means: -- All functions have optional DIVISOR arguments -- All functions return multiple values; see #'values -- All functions do their arithmetic with the correct number types according to the contamination rules. -- #'round and #'fround always round towards the even number in ambiguous cases. * doprnt.c (emacs_doprnt_1): * number.c (internal_coerce_number): Call Ftruncate with two arguments, not one. * floatfns.c (Ffloat): Correct this, if NUMBER is a bignum. * lisp.h: Declare Ftruncate as taking two arguments. * number.c: Provide scratch_ratio2, init it appropriately. * number.h: Make scratch_ratio2 available. * number.h (BIGFLOAT_ARITH_RETURN): * number.h (BIGFLOAT_ARITH_RETURN1): Correct these functions.

(defvar statusbar-hashtable (make-hashtable 29))
(defvar statusbar-gnome-p nil)

(defmacro get-frame-statusbar (frame)
  `(gethash (or ,frame (selected-frame)) statusbar-hashtable))

(defun add-frame-statusbar (frame)
  "Stick a GTK (or GNOME) statusbar at the bottom of the frame."
  (if (windowp (frame-property frame 'minibuffer))
      (puthash frame (get-frame-statusbar (window-frame (frame-property frame 'minibuffer)))
	       statusbar-hashtable)
    (let ((sbar nil)
	  (shell (frame-property frame 'shell-widget)))
      (if (string-match "Gnome" (gtk-type-name (gtk-object-type shell)))
	  (progn
	    (require 'gnome-widgets)
	    (setq sbar (gnome-appbar-new t t 0)
		  statusbar-gnome-p t)
	    (gtk-progress-set-format-string sbar "%p%%")
	    (gnome-app-set-statusbar shell sbar))
	(setq sbar (gtk-statusbar-new))
	(gtk-box-pack-end (frame-property frame 'container-widget)
			  sbar nil nil 0))
      (puthash frame sbar statusbar-hashtable))))

(add-hook 'create-frame-hook 'add-frame-statusbar)
(add-hook 'delete-frame-hook (lambda (f)
			       (remhash f statusbar-hashtable)))
			       

(defun clear-message (&optional label frame stdout-p no-restore)
  (let ((sbar (get-frame-statusbar frame)))
    (if sbar
	(if statusbar-gnome-p
	    (gnome-appbar-pop sbar)
	  (gtk-statusbar-pop sbar 1)))))

(defun append-message (label message &optional frame stdout-p)
  (let ((sbar (get-frame-statusbar frame)))
    (if sbar
	(if statusbar-gnome-p
	    (gnome-appbar-push sbar message)
	  (gtk-statusbar-push sbar 1 message)))))

(defun progress-display (fmt &optional value &rest args)
  "Print a progress gauge and message in the bottom gutter area of the frame.
The arguments are the same as to `format'.

If the only argument is nil, clear any existing progress gauge."
  (let ((sbar (get-frame-statusbar nil)))
    (apply 'message fmt args)
    (if statusbar-gnome-p
	(progn
	  (gtk-progress-set-show-text (gnome-appbar-get-progress sbar) t)
	  (gnome-appbar-set-progress sbar (/ value 100.0))
	  (gdk-flush)))))

(defun lprogress-display (label fmt &optional value &rest args)
  "Print a progress gauge and message in the bottom gutter area of the frame.
First argument LABEL is an identifier for this progress gauge.  The rest of the
arguments are the same as to `format'."
    (if (and (null fmt) (null args))
	(prog1 nil
	  (clear-progress-display label nil))
      (let ((str (apply 'format fmt args)))
	(progress-display str value)
	str)))

(defun clear-progress-display (&rest ignored)
  (if statusbar-gnome-p
      (let* ((sbar (get-frame-statusbar nil))
	     (progress (gnome-appbar-get-progress sbar)))
	(gnome-appbar-set-progress sbar 0)
	(gtk-progress-set-show-text progress nil))))