annotate scripts/strings/dec2bin.m @ 28789:28de41192f3c

Eliminate unneeded verification of nargin, nargout in m-files. * FIRfilter.m, FIRfilter_aggregation.m, get.m, polynomial.m, polynomial_superiorto.m, polynomial2.m, makeUniqueStrings.m, base64decode.m, base64encode.m, cd.m, lin2mu.m, record.m, sound.m, soundsc.m, accumarray.m, accumdim.m, bitcmp.m, bitset.m, cart2pol.m, celldisp.m, circshift.m, cplxpair.m, cumtrapz.m, flip.m, idivide.m, interpft.m, logspace.m, pol2cart.m, polyarea.m, postpad.m, prepad.m, rat.m, rot90.m, rotdim.m, shift.m, shiftdim.m, sortrows.m, trapz.m, dsearch.m, dsearchn.m, getappdata.m, getpixelposition.m, guidata.m, guihandles.m, isappdata.m, listfonts.m, uigetdir.m, waitforbuttonpress.m, __makeinfo__.m, doc.m, get_first_help_sentence.m, autumn.m, bone.m, brighten.m, cmpermute.m, cmunique.m, colorcube.m, contrast.m, cool.m, copper.m, cubehelix.m, flag.m, gray.m, gray2ind.m, hot.m, hsv.m, im2double.m, im2frame.m, imformats.m, jet.m, lines.m, ocean.m, pink.m, prism.m, rainbow.m, rgbplot.m, spinmap.m, spring.m, summer.m, viridis.m, white.m, winter.m, beep.m, importdata.m, is_valid_file_id.m, javachk.m, javaclasspath.m, findstr.m, genvarname.m, strmatch.m, bandwidth.m, commutation_matrix.m, cond.m, cross.m, isdefinite.m, ishermitian.m, issymmetric.m, krylov.m, linsolve.m, logm.m, lscov.m, null.m, ordeig.m, orth.m, rank.m, rref.m, vecnorm.m, bunzip2.m, citation.m, computer.m, copyfile.m, dir.m, dos.m, fileattrib.m, gunzip.m, inputParser.m, inputname.m, ismac.m, ispc.m, isunix.m, license.m, list_primes.m, methods.m, mkdir.m, movefile.m, nargchk.m, news.m, orderfields.m, recycle.m, tar.m, unix.m, unpack.m, untar.m, unzip.m, ver.m, version.m, what.m, zip.m, decic.m, fminbnd.m, fminunc.m, fsolve.m, fzero.m, glpk.m, humps.m, lsqnonneg.m, optimget.m, pqpnonneg.m, sqp.m, pathdef.m, camlookat.m, hidden.m, specular.m, plotmatrix.m, smooth3.m, sombrero.m, stemleaf.m, __gnuplot_drawnow__.m, __opengl_info__.m, ancestor.m, cla.m, close.m, closereq.m, copyobj.m, gca.m, gcf.m, ginput.m, graphics_toolkit.m, groot.m, hgload.m, hgsave.m, isgraphics.m, ishold.m, linkaxes.m, meshgrid.m, newplot.m, refresh.m, refreshdata.m, rotate.m, saveas.m, struct2hdl.m, conv.m, mkpp.m, mpoles.m, padecoef.m, pchip.m, polyder.m, polyfit.m, polygcd.m, polyint.m, polyout.m, polyval.m, ppder.m, ppint.m, getpref.m, ispref.m, rmpref.m, profexport.m, profshow.m, powerset.m, arch_fit.m, arma_rnd.m, blackman.m, detrend.m, diffpara.m, fftconv.m, fftfilt.m, filter2.m, freqz.m, freqz_plot.m, hamming.m, hanning.m, sinetone.m, sinewave.m, spectral_adf.m, spectral_xdf.m, stft.m, unwrap.m, gplot.m, ichol.m, ilu.m, spdiags.m, sprand.m, sprandn.m, spstats.m, svds.m, treelayout.m, treeplot.m, betainc.m, betaincinv.m, ellipke.m, gammainc.m, gammaincinv.m, legendre.m, pow2.m, hankel.m, pascal.m, rosser.m, toeplitz.m, bounds.m, corr.m, cov.m, histc.m, kendall.m, kurtosis.m, mad.m, mode.m, moment.m, prctile.m, quantile.m, range.m, ranks.m, run_count.m, skewness.m, spearman.m, std.m, var.m, zscore.m, dec2base.m, dec2bin.m, dec2hex.m, index.m, mat2str.m, native2unicode.m, ostrsplit.m, strjoin.m, strjust.m, strtok.m, substr.m, unicode2native.m, untabify.m, __debug_octave__.m, demo.m, example.m, fail.m, oruntests.m, dump_demos.m, speed.m, test.m, date.m, datenum.m, datestr.m, datevec.m, is_leap_year.m, now.m, weekday.m: Eliminate unneeded verification of nargin, nargout in m-files now that the interpreter checks these values.
author Rik <rik@octave.org>
date Thu, 24 Sep 2020 14:44:58 -0700
parents 2bb050267d74
children d8318c12d903
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rev   line source
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1 ########################################################################
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2 ##
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3 ## Copyright (C) 1996-2020 The Octave Project Developers
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4 ##
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5 ## See the file COPYRIGHT.md in the top-level directory of this
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6 ## distribution or <https://octave.org/copyright/>.
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7 ##
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8 ## This file is part of Octave.
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9 ##
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10 ## Octave is free software: you can redistribute it and/or modify it
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11 ## under the terms of the GNU General Public License as published by
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12 ## the Free Software Foundation, either version 3 of the License, or
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13 ## (at your option) any later version.
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14 ##
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15 ## Octave is distributed in the hope that it will be useful, but
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16 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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17 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 ## GNU General Public License for more details.
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19 ##
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20 ## You should have received a copy of the GNU General Public License
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21 ## along with Octave; see the file COPYING. If not, see
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22 ## <https://www.gnu.org/licenses/>.
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23 ##
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24 ########################################################################
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25
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26 ## -*- texinfo -*-
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27 ## @deftypefn {} {} dec2bin (@var{d})
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28 ## @deftypefnx {} {} dec2bin (@var{d}, @var{len})
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29 ## Return a string of ones and zeros representing the conversion of the integer
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30 ## @var{d} to a binary number.
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31 ##
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32 ## If @var{d} is negative, return the two's complement binary value of @var{d}.
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33 ## If @var{d} is a matrix or cell array, return a string matrix with one row
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34 ## for each element in @var{d}, padded with leading zeros to the width of the
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35 ## largest value.
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36 ##
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37 ## The optional second argument, @var{len}, specifies the minimum number of
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38 ## digits in the result.
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39 ##
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40 ## Examples:
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41 ##
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42 ## @example
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43 ## @group
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44 ## dec2bin (14)
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45 ## @result{} "1110"
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46 ##
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47 ## dec2bin (-14)
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48 ## @result{} "11110010"
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49 ## @end group
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50 ## @end example
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51 ##
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52 ## Programming Notes: The largest negative value that can be converted in to
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53 ## two's complement is @code{- (flintmax () / 2)}.
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54 ##
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55 ## @seealso{bin2dec, dec2base, dec2hex}
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56 ## @end deftypefn
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57
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58 function b = dec2bin (d, len)
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59
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60 if (nargin == 0)
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61 print_usage ();
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62 endif
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63
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64 if (iscell (d))
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65 d = cell2mat (d);
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66 endif
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67 ## Create column vector for algorithm (output is always col. vector anyways)
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68 d = d(:);
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69
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70 lt_zero_idx = (d < 0);
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71 if (any (lt_zero_idx))
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72 ## FIXME: Need an algorithm that works with larger values such as int64.
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73 if (any (d(lt_zero_idx) < -2^52))
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74 error ("dec2bin: negative inputs cannot be less than -flintmax () / 2");
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75 elseif (any (d(lt_zero_idx) < intmin ("int32")))
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76 d(lt_zero_idx) += flintmax ();
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77 elseif (any (d < intmin ("int16")))
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78 d(lt_zero_idx) += double (intmax ("uint32")) + 1;
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79 elseif (any (d < intmin ("int8")))
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80 d(lt_zero_idx) += double (intmax ("uint16"))+ 1;
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81 else
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82 d(lt_zero_idx) += double (intmax ("uint8")) + 1;
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83 endif
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84 endif
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85
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86 if (nargin == 1)
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87 b = dec2base (d, 2);
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88 else
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89 b = dec2base (d, 2, len);
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90 endif
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91
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92 endfunction
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93
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94
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95 %!assert (dec2bin (3), "11")
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96 %!assert (dec2bin (14), "1110")
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97 %!assert (dec2bin (14, 6), "001110")
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98 %!assert (dec2bin ([1, 2; 3, 4]), ["001"; "011"; "010"; "100"])
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99 %!assert (dec2bin ({1, 2; 3, 4}), ["001"; "011"; "010"; "100"])
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100 %!assert (dec2bin ({1, 2; 3, 4}, 4), ["0001"; "0011"; "0010"; "0100"])
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101
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102 ## Test negative inputs
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103 %!assert (dec2bin (-3), "11111101")
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Nicholas R. Jankowski <jankowskin@asme.org>
parents: 27985
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104 %!assert (dec2bin (-3, 3), "11111101")
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Nicholas R. Jankowski <jankowskin@asme.org>
parents: 27985
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105 %!assert (dec2bin (-3, 9), "011111101")
28237
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Rik <rik@octave.org>
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106 %!assert (dec2bin (-2^7 -1), "1111111101111111")
28236
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Nicholas R. Jankowski <jankowskin@asme.org>
parents: 27985
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107 %!assert (dec2bin (-2^15 -1), "11111111111111110111111111111111")
28241
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Rik <rik@octave.org>
parents: 28237
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108 ## FIXME: Matlab generates a string that is 64 characters long
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Rik <rik@octave.org>
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109 %!assert (dec2bin (-2^31 -1),
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Rik <rik@octave.org>
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110 %! "11111111111111111111101111111111111111111111111111111")
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Rik <rik@octave.org>
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111 %!assert (dec2bin (-2^52),
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Rik <rik@octave.org>
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112 %! "10000000000000000000000000000000000000000000000000000")
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Rik <rik@octave.org>
parents: 28237
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113 ## FIXME: Uncomment when support for int64 is added
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Rik <rik@octave.org>
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114 %!#assert (dec2bin (-2^63),
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Rik <rik@octave.org>
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115 %! "1000000000000000000000000000000000000000000000000000000000000000")
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parents: 28237
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116 %!#test
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Rik <rik@octave.org>
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117 %! assert (dec2bin (int64 (-2^63)),
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Rik <rik@octave.org>
parents: 28236
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118 %! "1000000000000000000000000000000000000000000000000000000000000000");
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parents: 28237
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119 %!#test
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Rik <rik@octave.org>
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120 %! assert (dec2bin (int64 (-2^63) -1),
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Rik <rik@octave.org>
parents: 28236
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121 %! "1000000000000000000000000000000000000000000000000000000000000000");
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Rik <rik@octave.org>
parents: 28237
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122 %!#test
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Rik <rik@octave.org>
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123 %! assert (dec2bin (int64 (-2^63) +1),
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Rik <rik@octave.org>
parents: 28236
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124 %! "1000000000000000000000000000000000000000000000000000000000000001");
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Rik <rik@octave.org>
parents: 28236
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125 %!assert (dec2bin ([-1, -2; -3, -4]),
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Rik <rik@octave.org>
parents: 28236
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126 %! ["11111111"; "11111101"; "11111110"; "11111100"])
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Rik <rik@octave.org>
parents: 28236
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127 %!assert (dec2bin ([1, 2; 3, -4]),
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Rik <rik@octave.org>
parents: 28236
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128 %! ["00000001"; "00000011"; "00000010"; "11111100"])
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Rik <rik@octave.org>
parents: 28236
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129 %!assert (dec2bin ({1, 2; 3, -4}),
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Rik <rik@octave.org>
parents: 28236
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130 %! ["00000001"; "00000011"; "00000010"; "11111100"])
7411
83a8781b529d [project @ 2008-01-22 21:52:25 by jwe]
jwe
parents: 7017
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131
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Rik <rik@octave.org>
parents: 19697
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132 ## Test input validation
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Rik <octave@nomad.inbox5.com>
parents: 14138
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133 %!error dec2bin ()
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Rik <octave@nomad.inbox5.com>
parents: 14138
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134 %!error dec2bin (1, 2, 3)
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Rik <rik@octave.org>
parents: 28237
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135 %!error <negative inputs cannot be less than> dec2bin (- flintmax ())