octave-nkf: scripts/miscellaneous/swapbytes.m annotate

annotate scripts/miscellaneous/swapbytes.m @ 20830:b65888ec820e draft default tip gccjit

dmalcom gcc jit import

author	Stefan Mahr <dac922@gmx.de>
date	Fri, 27 Feb 2015 16:59:36 +0100
parents	df437a52bcaf
children

rev	line source
19898 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 19401 diff changeset	1 ## Copyright (C) 2007-2015 David Bateman
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	2 ##
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	3 ## This file is part of Octave.
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	4 ##
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	5 ## Octave is free software; you can redistribute it and/or modify it
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: 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: 6869 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: 6869 diff changeset	8 ## your option) any later version.
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	9 ##
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	10 ## Octave is distributed in the hope that it will be useful, but
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	13 ## General Public License for more details.
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	14 ##
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: 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: 6869 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: 6869 diff changeset	17 ## <http://www.gnu.org/licenses/>.
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	18
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	19 ## -- texinfo --
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	20 ## @deftypefn {Function File} {} swapbytes (@var{x})
20374 df437a52bcaf doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19898 diff changeset	21 ## Swap the byte order on values, converting from little endian to big endian
df437a52bcaf doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19898 diff changeset	22 ## and vice versa.
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	23 ##
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	24 ## For example:
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	25 ##
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	26 ## @example
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	27 ## @group
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	28 ## swapbytes (uint16 (1:4))
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	29 ## @result{} [ 256 512 768 1024]
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	30 ## @end group
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	31 ## @end example
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	32 ##
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	33 ## @seealso{typecast, cast}
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	34 ## @end deftypefn
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	35
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	36 function y = swapbytes (x)
12847 619c1895e3e0 codesprint: Add tests for swapbytes.m Rik <octave@nomad.inbox5.com> parents: 12575 diff changeset	37
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	38 if (nargin != 1)
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	39 print_usage ();
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	40 endif
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	41
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	42 cls = class (x);
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	43 if (strcmp (cls, "int8") \|\| strcmp (cls, "uint8") \|\| isempty (x))
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	44 y = x;
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	45 else
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	46 if (strcmp (cls, "int16") \|\| strcmp (cls, "uint16"))
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	47 nb = 2;
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	48 elseif (strcmp (cls, "single")
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	49 \|\| strcmp (cls, "int32") \|\| strcmp (cls, "uint32"))
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	50 nb = 4;
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	51 elseif (strcmp (cls, "double")
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	52 \|\| strcmp (cls, "int64") \|\| strcmp (cls, "uint64"))
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	53 nb = 8;
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	54 else
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	55 error ("swapbytes: invalid object of class '%s'", cls);
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	56 endif
f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	57 y = reshape (typecast (reshape (typecast (x(:), "uint8"), nb, numel (x))
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	58 ([nb : -1 : 1], :) (:), cls), size (x));
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	59 endif
12847 619c1895e3e0 codesprint: Add tests for swapbytes.m Rik <octave@nomad.inbox5.com> parents: 12575 diff changeset	60
6869 f9c893831e68 [project @ 2007-09-06 16:38:44 by dbateman] dbateman parents: diff changeset	61 endfunction
12847 619c1895e3e0 codesprint: Add tests for swapbytes.m Rik <octave@nomad.inbox5.com> parents: 12575 diff changeset	62
619c1895e3e0 codesprint: Add tests for swapbytes.m Rik <octave@nomad.inbox5.com> parents: 12575 diff changeset	63
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	64 %!assert (swapbytes (uint16 (1:4)), uint16 ([256 512 768 1024]))
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	65 %!test
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	66 %! assert (swapbytes (swapbytes (pi)), pi);
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	67 %! assert (swapbytes (swapbytes (single (pi))), single (pi));
12847 619c1895e3e0 codesprint: Add tests for swapbytes.m Rik <octave@nomad.inbox5.com> parents: 12575 diff changeset	68
19401 827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	69 ## Test input validation
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	70 %!error swapbytes ()
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	71 %!error swapbytes (1, 2)
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	72 %!error <invalid object of class 'cell'> swapbytes ({1})
827ac8b5ae07 swapbytes.m: Add support for 'single' type. Rik <rik@octave.org> parents: 17744 diff changeset	73

Mercurial > hg > octave-nkf

annotate scripts/miscellaneous/swapbytes.m @ 20830:b65888ec820e draft default tip gccjit