octave-antonio: scripts/signal/sinc.m annotate

annotate scripts/signal/sinc.m @ 20170:af2b7695f1c4 draft default tip @

gallery.m: clean and vectorize part of qmult. * scripts/special-matrix/gallery.m: make qmult() follow Octave guidelines, vectorize last for loop in qmult().

author	Antonio Pino Robles <data.script93@gmail.com>
date	Thu, 28 May 2015 18:32:47 +0200
parents	4197fc428c7d
children	f1d0f506ee78

rev	line source
19697 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 17744 diff changeset	1 ## Copyright (C) 1994-2015 John W. Eaton
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	2 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	3 ## This file is part of Octave.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	4 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	5 ## Octave is free software; you can redistribute it and/or modify it
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	6 ## under the terms of the GNU General Public License as published by
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5307 diff changeset	7 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5307 diff changeset	8 ## your option) any later version.
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	9 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	10 ## Octave is distributed in the hope that it will be useful, but
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	13 ## General Public License for more details.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	14 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2311 diff changeset	15 ## You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5307 diff changeset	16 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 5307 diff changeset	17 ## <http://www.gnu.org/licenses/>.
2303 5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 904 diff changeset	18
3367 0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	19 ## -- texinfo --
0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	20 ## @deftypefn {Function File} {} sinc (@var{x})
0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	21 ## Return
0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	22 ## @tex
0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	23 ## $ \sin (\pi x)/(\pi x)$.
0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	24 ## @end tex
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7125 diff changeset	25 ## @ifnottex
14868 5d3a684236b0 maint: Use Octave coding conventions for cuddling parentheses in scripts directory Rik <octave@nomad.inbox5.com> parents: 14363 diff changeset	26 ## sin (pix) / (pix).
8517 81d6ab3ac93c Allow documentation tobe built for other formats than tex and info sh@sh-laptop parents: 7125 diff changeset	27 ## @end ifnottex
3367 0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	28 ## @end deftypefn
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	29
3367 0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	30 ## Author: jwe ???
2314 949ab8eba8bc [project @ 1996-07-12 03:58:02 by jwe] jwe parents: 2313 diff changeset	31
2311 2b5788792cad [project @ 1996-07-11 20:18:38 by jwe] jwe parents: 2303 diff changeset	32 function result = sinc (x)
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	33
7125 f084ba47812b [project @ 2007-11-08 02:29:23 by jwe] jwe parents: 7017 diff changeset	34 if (nargin != 1)
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe] jwe parents: 7017 diff changeset	35 print_usage ();
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe] jwe parents: 7017 diff changeset	36 endif
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe] jwe parents: 7017 diff changeset	37
3486 9493fe321888 [project @ 2000-01-28 05:05:41 by jwe] jwe parents: 3367 diff changeset	38 result = ones (size (x));
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	39
3486 9493fe321888 [project @ 2000-01-28 05:05:41 by jwe] jwe parents: 3367 diff changeset	40 i = (x != 0);
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	41
4807 15e923b54eff [project @ 2004-03-02 14:21:02 by jwe] jwe parents: 3486 diff changeset	42 if (any (i(:)))
3486 9493fe321888 [project @ 2000-01-28 05:05:41 by jwe] jwe parents: 3367 diff changeset	43 t = pi * x(i);
9493fe321888 [project @ 2000-01-28 05:05:41 by jwe] jwe parents: 3367 diff changeset	44 result(i) = sin (t) ./ t;
559 4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	45 endif
4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	46
4e826edfbc56 [project @ 1994-07-25 22:18:28 by jwe] jwe parents: diff changeset	47 endfunction
12816 cd59f5271941 codesprint: Wrote 4 tests for sinc.m Giles Anderson <agander@gmail.com> parents: 11523 diff changeset	48
cd59f5271941 codesprint: Wrote 4 tests for sinc.m Giles Anderson <agander@gmail.com> parents: 11523 diff changeset	49
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	50 %!assert (sinc (0), 1)
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	51 %!assert (sinc (1), 0,1e-6)
12816 cd59f5271941 codesprint: Wrote 4 tests for sinc.m Giles Anderson <agander@gmail.com> parents: 11523 diff changeset	52 %!assert (sinc (1/2), 2/pi, 1e-6)
cd59f5271941 codesprint: Wrote 4 tests for sinc.m Giles Anderson <agander@gmail.com> parents: 11523 diff changeset	53
cd59f5271941 codesprint: Wrote 4 tests for sinc.m Giles Anderson <agander@gmail.com> parents: 11523 diff changeset	54 %!error sinc()
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	55

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