Mercurial > octave
view scripts/help/bessel.m @ 33563:474f5a226fe0 default tip
adding shortcut for setting focus to the find widget in the exp. console
* command-widget.cc (command_widget): initialize new shortcut,
connect slot for activating find widget to this shortcut;
(notice_settings): set shortcut key sequence
* command-widget.h: new shortcut
* find-widget.cc (find_widget): initialize new flag for find
widget being closeable or not, depending on close button;
(activate_find): do not hide widget if visible but not closeable
* find-widget.h: new class variable m_is_closeable
author | Torsten Lilge <ttl-octave@mailbox.org> |
---|---|
date | Fri, 10 May 2024 19:17:45 +0200 |
parents | 2e484f9f1f18 |
children |
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######################################################################## ## ## Copyright (C) 1996-2024 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave is free software: you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation, either version 3 of the License, or ## (at your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {[@var{J}, @var{ierr}] =} besselj (@var{alpha}, @var{x}, @var{opt}) ## @deftypefnx {} {[@var{Y}, @var{ierr}] =} bessely (@var{alpha}, @var{x}, @var{opt}) ## @deftypefnx {} {[@var{I}, @var{ierr}] =} besseli (@var{alpha}, @var{x}, @var{opt}) ## @deftypefnx {} {[@var{K}, @var{ierr}] =} besselk (@var{alpha}, @var{x}, @var{opt}) ## @deftypefnx {} {[@var{H}, @var{ierr}] =} besselh (@var{alpha}, @var{k}, @var{x}, @var{opt}) ## Compute Bessel or Hankel functions of various kinds. ## ## All functions begin with the prefix @qcode{"bessel"}. The list of ## functions is: ## ## @table @code ## @item besselj ## Bessel functions of the first kind. If the argument @var{opt} is supplied, ## the result is multiplied by @code{exp (-abs (imag (x)))}. ## ## @item bessely ## Bessel functions of the second kind. If the argument @var{opt} is supplied, ## the result is multiplied by @w{@code{exp (-abs (imag (x)))}}. ## ## @item besseli ## Modified Bessel functions of the first kind. If the argument @var{opt} is ## supplied, the result is multiplied by @w{@code{exp (-abs (real (x)))}}. ## ## @item besselk ## Modified Bessel functions of the second kind. If the argument @var{opt} is ## supplied, the result is multiplied by @w{@code{exp (x)}}. ## ## @item besselh ## Compute Hankel functions of the first (@var{k} = 1) or second (@var{k} = 2) ## kind. If the argument @var{opt} is supplied, the result is multiplied by ## @w{@code{exp (-I*@var{x})}} for @var{k} = 1 or @w{@code{exp (I*@var{x})}} ## for @var{k} = 2. ## @end table ## ## If @var{alpha} is a scalar, the result is the same size as @var{x}. If ## @var{x} is a scalar, the result is the same size as @var{alpha}. If ## @var{alpha} is a row vector and @var{x} is a column vector, the result is ## a matrix with @code{length (@var{x})} rows and @code{length ## (@var{alpha})} columns. Otherwise, @var{alpha} and @var{x} must conform ## and the result will be the same size. ## ## The order of the Bessel function @var{alpha} must be real. The points for ## evaluation @var{x} may be complex. ## ## If requested, @var{ierr} contains the following status information and is ## the same size as the result. ## ## @enumerate 0 ## @item ## Normal return. ## ## @item ## Input error, return @code{NaN}. ## ## @item ## Overflow, return @code{Inf}. ## ## @item ## Loss of significance by argument reduction results in less than half of ## machine accuracy. ## ## @item ## Loss of significance by argument reduction, output may be inaccurate. ## ## @item ## Error---no computation, algorithm termination condition not met, return ## @code{NaN}. ## @end enumerate ## ## @seealso{besselj, bessely, besseli, besselk, besselh} ## @end deftypefn function bessel () error ("bessel: you must use besselj, bessely, besseli, besselk, or besselh\n"); endfunction %!error <you must use besselj, ...> bessel ()