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annotate examples/@polynomial/polynomial.m @ 11117:3cbc0d77db48 ss-3-3-53

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update version info for snapshot
author John W. Eaton <jwe@octave.org>
date Tue, 19 Oct 2010 02:25:32 -0400
parents 567e3e4ab74d
children 050bc580cb60
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1 ## -*- texinfo -*-
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2 ## @deftypefn {Function File} {} polynomial ()
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3 ## @deftypefnx {Function File} {} polynomial (@var{a})
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4 ## Creates a polynomial object representing the polynomial
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5 ##
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6 ## @example
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7 ## a0 + a1 * x + a2 * x^2 + @dots{} + an * x^n
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8 ## @end example
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9 ##
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10 ## from a vector of coefficients [a0 a1 a2 ... an].
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11 ## @end deftypefn
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12
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13 function p = polynomial (a)
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14 if (nargin == 0)
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15 p.poly = [0];
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16 p = class (p, "polynomial");
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17 elseif (nargin == 1)
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18 if (strcmp (class (a), "polynomial"))
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19 p = a;
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20 elseif (isvector (a) && isreal (a))
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21 p.poly = a(:).';
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22 p = class (p, "polynomial");
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23 else
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24 error ("polynomial: expecting real vector");
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25 endif
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26 else
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27 print_usage ();
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28 endif
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29 endfunction