annotate scripts/strings/dec2bin.m @ 28886:d8318c12d903

test: remove unnecessary BIST tests in m-files checking for excessive number of inputs. Remove BIST tests now that interpreter enforces calling function with no more than the number of arguments defined in the function prototype. * makeUniqueStrings.m, makeValidName.m, base64decode.m, base64encode.m, record.m, sound.m, soundsc.m, acosd.m, acot.m, acotd.m, acoth.m, acsc.m, acscd.m, acsch.m, asec.m, asecd.m, asech.m, asind.m, atan2d.m, atand.m, cosd.m, cot.m, cotd.m, coth.m, csc.m, cscd.m, csch.m, sec.m, secd.m, sech.m, sind.m, tand.m, accumdim.m, bincoeff.m, bitget.m, bitset.m, cell2mat.m, circshift.m, cplxpair.m, cumtrapz.m, deg2rad.m, flip.m, fliplr.m, flipud.m, int2str.m, interpft.m, logspace.m, num2str.m, postpad.m, prepad.m, rad2deg.m, rot90.m, rotdim.m, shift.m, subsindex.m, trapz.m, rotx.m, roty.m, rotz.m, getappdata.m, getpixelposition.m, guidata.m, isappdata.m, waitforbuttonpress.m, __gripe_missing_component__.m, bessel.m, hsv2rgb.m, ind2gray.m, rgb2gray.m, rgb2hsv.m, rgbplot.m, fileread.m, javachk.m, usejava.m, findstr.m, genvarname.m, isdir.m, vectorize.m, cond.m, cross.m, duplication_matrix.m, expm.m, isbanded.m, isdefinite.m, isdiag.m, ishermitian.m, issymmetric.m, istril.m, istriu.m, trace.m, vech.m, vecnorm.m, cast.m, citation.m, compare_versions.m, grabcode.m, inputname.m, isfile.m, isfolder.m, ismac.m, ispc.m, isunix.m, list_primes.m, methods.m, news.m, open.m, run.m, swapbytes.m, tar.m, verLessThan.m, zip.m, odeget.m, optimget.m, stemleaf.m, allchild.m, ancestor.m, close.m, groot.m, hgsave.m, isaxes.m, isfigure.m, isgraphics.m, ishandle.m, isprop.m, linkaxes.m, rotate.m, saveas.m, conv.m, poly.m, polyint.m, polyreduce.m, ppval.m, roots.m, addpref.m, getpref.m, ispref.m, rmpref.m, setpref.m, profile.m, profshow.m, powerset.m, autoreg_matrix.m, bartlett.m, blackman.m, detrend.m, fftconv.m, fftfilt.m, fftshift.m, hamming.m, hanning.m, ifftshift.m, sinewave.m, spectral_adf.m, spectral_xdf.m, unwrap.m, nonzeros.m, spconvert.m, sprand.m, sprandn.m, beta.m, betainc.m, betaln.m, cosint.m, expint.m, factorial.m, legendre.m, nchoosek.m, nthroot.m, perms.m, pow2.m, primes.m, reallog.m, realpow.m, realsqrt.m, sinint.m, hankel.m, hilb.m, invhilb.m, magic.m, pascal.m, toeplitz.m, vander.m, wilkinson.m, center.m, corr.m, cov.m, discrete_cdf.m, discrete_inv.m, discrete_pdf.m, empirical_cdf.m, empirical_inv.m, empirical_pdf.m, iqr.m, kendall.m, kurtosis.m, mad.m, meansq.m, median.m, moment.m, prctile.m, quantile.m, range.m, run_count.m, skewness.m, spearman.m, statistics.m, std.m, var.m, base2dec.m, bin2dec.m, blanks.m, dec2base.m, dec2bin.m, dec2hex.m, endsWith.m, erase.m, hex2dec.m, index.m, isletter.m, isstring.m, isstrprop.m, mat2str.m, ostrsplit.m, rindex.m, startsWith.m, strtrunc.m, substr.m, fail.m, addtodate.m, asctime.m, ctime.m, date.m, datestr.m, eomday.m, etime.m, is_leap_year.m, now.m: remove unnecessary BIST tests in m-files checking for excessive number of inputs.
author Rik <rik@octave.org>
date Fri, 09 Oct 2020 13:28:53 -0700
parents 28de41192f3c
children 1a3cb2e1644a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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104 %!assert (dec2bin (-3, 3), "11111101")
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105 %!assert (dec2bin (-3, 9), "011111101")
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106 %!assert (dec2bin (-2^7 -1), "1111111101111111")
28236
5bb1c0cbb27e dec2bin.m: Allow negative number inputs (bug #58147).
Nicholas R. Jankowski <jankowskin@asme.org>
parents: 27985
diff changeset
107 %!assert (dec2bin (-2^15 -1), "11111111111111110111111111111111")
28241
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
108 ## FIXME: Matlab generates a string that is 64 characters long
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
109 %!assert (dec2bin (-2^31 -1),
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
110 %! "11111111111111111111101111111111111111111111111111111")
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
111 %!assert (dec2bin (-2^52),
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
112 %! "10000000000000000000000000000000000000000000000000000")
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
113 ## FIXME: Uncomment when support for int64 is added
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
114 %!#assert (dec2bin (-2^63),
28237
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Rik <rik@octave.org>
parents: 28236
diff changeset
115 %! "1000000000000000000000000000000000000000000000000000000000000000")
28241
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
116 %!#test
28237
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Rik <rik@octave.org>
parents: 28236
diff changeset
117 %! assert (dec2bin (int64 (-2^63)),
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
118 %! "1000000000000000000000000000000000000000000000000000000000000000");
28241
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
119 %!#test
28237
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Rik <rik@octave.org>
parents: 28236
diff changeset
120 %! assert (dec2bin (int64 (-2^63) -1),
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
121 %! "1000000000000000000000000000000000000000000000000000000000000000");
28241
ef7bc64a604b dec2bin.m: Fix algorithm for numbers less than intmin ('int32') (bug #58147).
Rik <rik@octave.org>
parents: 28237
diff changeset
122 %!#test
28237
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Rik <rik@octave.org>
parents: 28236
diff changeset
123 %! assert (dec2bin (int64 (-2^63) +1),
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
124 %! "1000000000000000000000000000000000000000000000000000000000000001");
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
125 %!assert (dec2bin ([-1, -2; -3, -4]),
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
126 %! ["11111111"; "11111101"; "11111110"; "11111100"])
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
127 %!assert (dec2bin ([1, 2; 3, -4]),
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
128 %! ["00000001"; "00000011"; "00000010"; "11111100"])
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
129 %!assert (dec2bin ({1, 2; 3, -4}),
ac3a078e688f dec2bin.m: Reduce number of times search for negative numbers is done (bug #58147).
Rik <rik@octave.org>
parents: 28236
diff changeset
130 %! ["00000001"; "00000011"; "00000010"; "11111100"])
7411
83a8781b529d [project @ 2008-01-22 21:52:25 by jwe]
jwe
parents: 7017
diff changeset
131
19833
9fc020886ae9 maint: Clean up m-files to follow Octave coding conventions.
Rik <rik@octave.org>
parents: 19697
diff changeset
132 ## Test input validation
28886
d8318c12d903 test: remove unnecessary BIST tests in m-files checking for excessive number of inputs.
Rik <rik@octave.org>
parents: 28789
diff changeset
133 %!error <Invalid call> dec2bin ()
28241
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Rik <rik@octave.org>
parents: 28237
diff changeset
134 %!error <negative inputs cannot be less than> dec2bin (- flintmax ())