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Map -pi to pi for principal argument used in complex operators (bug #43313). * oct-cmplx.h: For all operator templates in file, use conditional tests on arg() output to effectively map -pi to pi. * Array-C.cc (nan_ascending_compare, nan_descending_compare) : Update sort routines used by issorted to map -pi to pi. Use intermediate variables for a 40% speed-up in calculation. * Array-fC.cc (nan_ascending_compare, nan_descending_compare) : Update sort routines used by issorted to map -pi to pi. Use intermediate variables for a 40% speed-up in calculation. * test/complex.tst: New test file to check behavior. * test/Makefile.am: Add complex.tst to build system.
author Daniel J Sebald <daniel.sebald@ieee.org>
date Sat, 04 Oct 2014 02:17:17 -0500
parents
children 31e3799b9e27
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19832
bdf90710dddf Map -pi to pi for principal argument used in complex operators (bug #43313).
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1 ## Copyright (C) 2015 Rik Wehbring
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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 ## Test ordering of complex values by magnitude and then by phase
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20 %!test
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21 %! x = [0 i 1+i 2 3i 3+4i];
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22 %! assert (sort (x, "descend"), fliplr (x));
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23
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24 %!test
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25 %! x = [1, -1, i, -i];
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26 %! xs = [-i, 1, i, -1];
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27 %! assert (sort (x), xs);
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28 %! assert (sort (x, "descend"), fliplr (xs));
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29
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30 ## bug #44071, issorted incorrect because it uses different sort routine.
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31 %!assert (issorted ([1, -1, i, -i]), false)
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32
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33 ## bug #43313, -1 is both '>' and '==' to (-1 - 0i)
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34 %!test
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35 %! assert (complex(-1,0) == complex(-1,-0), true);
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36 %! assert (complex(-1,0) > complex(-1,-0), false);
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37 %! assert (complex(-1,0) < complex(-1,-0), false);
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38
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39 ## Test that sort and issorted both agree on boundary case
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40 %!test
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41 %! x = [complex(-1,0), complex(-1,-0), i, -i, 1];
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42 %! xs = sort (x);
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43 %! assert (issorted (xs));
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44