Mercurial > hg > xemacs-beta
annotate man/lispref/dialog.texi @ 5911:48386fd60fd0
GMP functions that take doubles choke on non-finite values, avoid that.
src/ChangeLog addition:
2015-05-10 Aidan Kehoe <kehoea@parhasard.net>
* floatfns.c (double_to_integer):
Rename this from float_to_int to fit our newer, bignum-compatible
terminology.
GMP can signal SIGFPE when asked to turn NaN or infinity into a
bignum, and we're not prepared to handle that signal if the OS float
library routines don't do that, so check for those values
explicitly.
* floatfns.c (ceiling_two_float):
* floatfns.c (ceiling_one_float):
* floatfns.c (floor_two_float):
* floatfns.c (floor_one_float):
* floatfns.c (round_two_float):
* floatfns.c (round_one_float):
* floatfns.c (truncate_two_float):
* floatfns.c (truncate_one_float):
Call double_to_integer() with its new name.
* number.c:
Don't use the {bignum,ratio,bigfloat}_set_double functions
directly here, with GMP they can choke when handed non-finite C
doubles, call Ftruncate() and the new float_to_bigfloat() from
floatfns.c. Maybe we should extend number-gmp.c with GMP-specific
implementations that check for non-finite values.
tests/ChangeLog addition:
2015-05-10 Aidan Kehoe <kehoea@parhasard.net>
* automated/lisp-tests.el:
Backslash a few parentheses in the first column for the sake of
fontification.
* automated/lisp-tests.el:
Check that the rounding functions signal Lisp errors correctly
when handed positive and negative infinity and NaN.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 10 May 2015 19:07:09 +0100 |
| parents | 9fae6227ede5 |
| children |
| rev | line source |
|---|---|
| 0 | 1 @c -*-texinfo-*- |
| 2 @c This is part of the XEmacs Lisp Reference Manual. | |
| 444 | 3 @c Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc. |
| 0 | 4 @c See the file lispref.texi for copying conditions. |
| 5 @setfilename ../../info/dialog.info | |
| 6 @node Dialog Boxes, Toolbar, Menus, Top | |
| 7 @chapter Dialog Boxes | |
| 8 @cindex dialog box | |
| 9 | |
| 10 @menu | |
| 11 * Dialog Box Format:: | |
| 12 * Dialog Box Functions:: | |
| 13 @end menu | |
| 14 | |
|
5791
9fae6227ede5
Silence texinfo 5.2 warnings, primarily by adding next, prev, and up
Jerry James <james@xemacs.org>
parents:
444
diff
changeset
|
15 @node Dialog Box Format, Dialog Box Functions, Dialog Boxes, Dialog Boxes |
| 0 | 16 @section Dialog Box Format |
| 17 | |
| 18 A dialog box description is a list. | |
| 19 | |
| 20 @itemize @bullet | |
| 21 @item | |
| 22 The first element of the list is a string to display in the dialog box. | |
| 23 @item | |
| 24 The rest of the elements are descriptions of the dialog box's buttons. | |
| 25 Each one is a vector of three elements: | |
| 26 @itemize @minus | |
| 27 @item | |
| 28 The first element is the text of the button. | |
| 29 @item | |
| 30 The second element is the @dfn{callback}. | |
| 31 @item | |
| 32 The third element is @code{t} or @code{nil}, whether this button is | |
| 33 selectable. | |
| 34 @end itemize | |
| 35 @end itemize | |
| 36 | |
| 37 If the callback of a button is a symbol, then it must name a command. | |
| 38 It will be invoked with @code{call-interactively}. If it is a list, | |
| 39 then it is evaluated with @code{eval}. | |
| 40 | |
| 41 One (and only one) of the buttons may be @code{nil}. This marker means | |
| 42 that all following buttons should be flushright instead of flushleft. | |
| 43 | |
| 44 The syntax, more precisely: | |
| 45 | |
| 46 @example | |
| 398 | 47 form := <something to pass to `eval'> |
| 48 command := <a symbol or string, to pass to `call-interactively'> | |
| 49 callback := command | form | |
| 50 active-p := <t, nil, or a form to evaluate to decide whether this | |
| 51 button should be selectable> | |
| 52 name := <string> | |
| 53 partition := 'nil' | |
| 54 button := '[' name callback active-p ']' | |
| 55 dialog := '(' name [ button ]+ [ partition [ button ]+ ] ')' | |
| 0 | 56 @end example |
| 57 | |
|
5791
9fae6227ede5
Silence texinfo 5.2 warnings, primarily by adding next, prev, and up
Jerry James <james@xemacs.org>
parents:
444
diff
changeset
|
58 @node Dialog Box Functions, , Dialog Box Format, Dialog Boxes |
| 0 | 59 @section Dialog Box Functions |
| 60 | |
| 61 @defun popup-dialog-box dbox-desc | |
| 62 This function pops up a dialog box. @var{dbox-desc} describes how the | |
| 63 dialog box will appear (@pxref{Dialog Box Format}). | |
| 64 @end defun | |
| 65 | |
| 66 @xref{Yes-or-No Queries}, for functions to ask a yes/no question using | |
| 67 a dialog box. |