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1 ## Copyright (C) 1996, 1997 John W. Eaton |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 3 of the License, or (at |
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8 ## your option) any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, see |
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17 ## <http://www.gnu.org/licenses/>. |
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18 |
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19 ## -*- texinfo -*- |
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20 ## @deftypefn {Mapping Function} {} besseli (@var{alpha}, @var{x}) |
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21 ## @deftypefnx {Mapping Function} {} besselj (@var{alpha}, @var{x}) |
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22 ## @deftypefnx {Mapping Function} {} besselk (@var{alpha}, @var{x}) |
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23 ## @deftypefnx {Mapping Function} {} bessely (@var{alpha}, @var{x}) |
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24 ## Compute Bessel functions of the following types: |
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25 ## |
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26 ## @table @code |
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27 ## @item besselj |
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28 ## Bessel functions of the first kind. |
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29 ## |
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30 ## @item bessely |
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31 ## Bessel functions of the second kind. |
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32 ## |
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33 ## @item besseli |
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34 ## Modified Bessel functions of the first kind. |
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35 ## |
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36 ## @item besselk |
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37 ## Modified Bessel functions of the second kind. |
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38 ## @end table |
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39 ## |
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40 ## The second argument, @var{x}, must be a real matrix, vector, or scalar. |
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41 ## |
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42 ## The first argument, @var{alpha}, must be greater than or equal to zero. |
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43 ## If @var{alpha} is a range, it must have an increment equal to one. |
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44 ## |
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45 ## If @var{alpha} is a scalar, the result is the same size as @var{x}. |
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46 ## |
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47 ## If @var{alpha} is a range, @var{x} must be a vector or scalar, and the |
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48 ## result is a matrix with @code{length(@var{x})} rows and |
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49 ## @code{length(@var{alpha})} columns. |
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50 ## @end deftypefn |
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51 |
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52 function bessel () |
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53 error ("bessel: you must use besselj, bessely, besseli, or besselk"); |
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54 endfunction |
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55 |
