annotate scripts/statistics/distributions/geornd.m @ 14363:f3d52523cde1

Use Octave coding conventions in all m-file %!test blocks * wavread.m, acosd.m, acot.m, acotd.m, acoth.m, acsc.m, acscd.m, acsch.m, asec.m, asecd.m, asech.m, asind.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, accumarray.m, accumdim.m, bitcmp.m, bitget.m, bitset.m, blkdiag.m, cart2pol.m, cart2sph.m, celldisp.m, chop.m, circshift.m, colon.m, common_size.m, cplxpair.m, cumtrapz.m, curl.m, dblquad.m, deal.m, divergence.m, flipdim.m, fliplr.m, flipud.m, genvarname.m, gradient.m, idivide.m, int2str.m, interp1.m, interp1q.m, interp2.m, interp3.m, interpft.m, interpn.m, isa.m, isdir.m, isequal.m, isequalwithequalnans.m, issquare.m, logspace.m, nargchk.m, narginchk.m, nargoutchk.m, nextpow2.m, nthargout.m, num2str.m, pol2cart.m, polyarea.m, postpad.m, prepad.m, profile.m, profshow.m, quadgk.m, quadv.m, randi.m, rat.m, repmat.m, rot90.m, rotdim.m, shift.m, shiftdim.m, sph2cart.m, structfun.m, trapz.m, triplequad.m, convhull.m, dsearch.m, dsearchn.m, griddata3.m, griddatan.m, rectint.m, tsearchn.m, __makeinfo__.m, doc.m, get_first_help_sentence.m, help.m, type.m, unimplemented.m, which.m, imread.m, imwrite.m, dlmwrite.m, fileread.m, is_valid_file_id.m, strread.m, textread.m, textscan.m, commutation_matrix.m, cond.m, condest.m, cross.m, duplication_matrix.m, expm.m, housh.m, isdefinite.m, ishermitian.m, issymmetric.m, logm.m, normest.m, null.m, onenormest.m, orth.m, planerot.m, qzhess.m, rank.m, rref.m, trace.m, vech.m, ans.m, bincoeff.m, bug_report.m, bzip2.m, comma.m, compare_versions.m, computer.m, edit.m, fileparts.m, fullfile.m, getfield.m, gzip.m, info.m, inputname.m, isappdata.m, isdeployed.m, ismac.m, ispc.m, isunix.m, list_primes.m, ls.m, mexext.m, namelengthmax.m, news.m, orderfields.m, paren.m, recycle.m, rmappdata.m, semicolon.m, setappdata.m, setfield.m, substruct.m, symvar.m, ver.m, version.m, warning_ids.m, xor.m, fminbnd.m, fsolve.m, fzero.m, lsqnonneg.m, optimset.m, pqpnonneg.m, sqp.m, matlabroot.m, __gnuplot_drawnow__.m, __plt_get_axis_arg__.m, ancestor.m, cla.m, clf.m, close.m, colorbar.m, colstyle.m, comet3.m, contourc.m, figure.m, gca.m, gcbf.m, gcbo.m, gcf.m, ginput.m, graphics_toolkit.m, gtext.m, hggroup.m, hist.m, hold.m, isfigure.m, ishghandle.m, ishold.m, isocolors.m, isonormals.m, isosurface.m, isprop.m, legend.m, line.m, loglog.m, loglogerr.m, meshgrid.m, ndgrid.m, newplot.m, orient.m, patch.m, plot3.m, plotyy.m, __print_parse_opts__.m, quiver3.m, refreshdata.m, ribbon.m, semilogx.m, semilogxerr.m, semilogy.m, stem.m, stem3.m, subplot.m, title.m, uigetfile.m, view.m, whitebg.m, compan.m, conv.m, deconv.m, mkpp.m, mpoles.m, pchip.m, poly.m, polyaffine.m, polyder.m, polyfit.m, polygcd.m, polyint.m, polyout.m, polyval.m, polyvalm.m, ppder.m, ppint.m, ppjumps.m, ppval.m, residue.m, roots.m, spline.m, intersect.m, ismember.m, powerset.m, setdiff.m, setxor.m, union.m, unique.m, autoreg_matrix.m, bartlett.m, blackman.m, detrend.m, fftconv.m, fftfilt.m, fftshift.m, freqz.m, hamming.m, hanning.m, ifftshift.m, sinc.m, sinetone.m, sinewave.m, unwrap.m, bicg.m, bicgstab.m, gmres.m, gplot.m, nonzeros.m, pcg.m, pcr.m, spaugment.m, spconvert.m, spdiags.m, speye.m, spfun.m, spones.m, sprand.m, sprandsym.m, spstats.m, spy.m, svds.m, treelayout.m, bessel.m, beta.m, betaln.m, factor.m, factorial.m, isprime.m, lcm.m, legendre.m, nchoosek.m, nthroot.m, perms.m, pow2.m, primes.m, reallog.m, realpow.m, realsqrt.m, hadamard.m, hankel.m, hilb.m, invhilb.m, magic.m, rosser.m, vander.m, __finish__.m, center.m, cloglog.m, corr.m, cov.m, gls.m, histc.m, iqr.m, kendall.m, kurtosis.m, logit.m, mahalanobis.m, mean.m, meansq.m, median.m, mode.m, moment.m, ols.m, ppplot.m, prctile.m, probit.m, quantile.m, range.m, ranks.m, run_count.m, runlength.m, skewness.m, spearman.m, statistics.m, std.m, table.m, var.m, zscore.m, betacdf.m, betainv.m, betapdf.m, betarnd.m, binocdf.m, binoinv.m, binopdf.m, binornd.m, cauchy_cdf.m, cauchy_inv.m, cauchy_pdf.m, cauchy_rnd.m, chi2cdf.m, chi2inv.m, chi2pdf.m, chi2rnd.m, discrete_cdf.m, discrete_inv.m, discrete_pdf.m, discrete_rnd.m, empirical_cdf.m, empirical_inv.m, empirical_pdf.m, empirical_rnd.m, expcdf.m, expinv.m, exppdf.m, exprnd.m, fcdf.m, finv.m, fpdf.m, frnd.m, gamcdf.m, gaminv.m, gampdf.m, gamrnd.m, geocdf.m, geoinv.m, geopdf.m, geornd.m, hygecdf.m, hygeinv.m, hygepdf.m, hygernd.m, kolmogorov_smirnov_cdf.m, laplace_cdf.m, laplace_inv.m, laplace_pdf.m, laplace_rnd.m, logistic_cdf.m, logistic_inv.m, logistic_pdf.m, logistic_rnd.m, logncdf.m, logninv.m, lognpdf.m, lognrnd.m, nbincdf.m, nbininv.m, nbinpdf.m, nbinrnd.m, normcdf.m, norminv.m, normpdf.m, normrnd.m, poisscdf.m, poissinv.m, poisspdf.m, poissrnd.m, stdnormal_cdf.m, stdnormal_inv.m, stdnormal_pdf.m, stdnormal_rnd.m, tcdf.m, tinv.m, tpdf.m, trnd.m, unidcdf.m, unidinv.m, unidpdf.m, unidrnd.m, unifcdf.m, unifinv.m, unifpdf.m, unifrnd.m, wblcdf.m, wblinv.m, wblpdf.m, wblrnd.m, kolmogorov_smirnov_test.m, kruskal_wallis_test.m, base2dec.m, bin2dec.m, blanks.m, cstrcat.m, deblank.m, dec2base.m, dec2bin.m, dec2hex.m, findstr.m, hex2dec.m, index.m, isletter.m, mat2str.m, rindex.m, str2num.m, strcat.m, strjust.m, strmatch.m, strsplit.m, strtok.m, strtrim.m, strtrunc.m, substr.m, validatestring.m, demo.m, example.m, fail.m, speed.m, addtodate.m, asctime.m, clock.m, ctime.m, date.m, datenum.m, datetick.m, datevec.m, eomday.m, etime.m, is_leap_year.m, now.m: Use Octave coding conventions in all m-file %!test blocks
author Rik <octave@nomad.inbox5.com>
date Mon, 13 Feb 2012 07:29:44 -0800
parents 72c96de7a403
children 57569a35765c
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rev   line source
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1 ## Copyright (C) 2012 Rik Wehbring
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2 ## Copyright (C) 1995-2012 Kurt Hornik
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} geornd (@var{p})
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22 ## @deftypefnx {Function File} {} geornd (@var{p}, @var{r})
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23 ## @deftypefnx {Function File} {} geornd (@var{p}, @var{r}, @var{c}, @dots{})
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24 ## @deftypefnx {Function File} {} geornd (@var{p}, [@var{sz}])
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25 ## Return a matrix of random samples from the geometric distribution with
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26 ## parameter @var{p}.
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27 ##
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28 ## When called with a single size argument, return a square matrix with
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29 ## the dimension specified. When called with more than one scalar argument the
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30 ## first two arguments are taken as the number of rows and columns and any
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31 ## further arguments specify additional matrix dimensions. The size may also
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32 ## be specified with a vector of dimensions @var{sz}.
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33 ##
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34 ## If no size arguments are given then the result matrix is the size of
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35 ## @var{p}.
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36 ## @end deftypefn
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37
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38 ## Author: KH <Kurt.Hornik@wu-wien.ac.at>
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39 ## Description: Random deviates from the geometric distribution
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40
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41 function rnd = geornd (p, varargin)
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42
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43 if (nargin < 1)
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44 print_usage ();
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45 endif
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46
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47 if (nargin == 1)
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48 sz = size (p);
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49 elseif (nargin == 2)
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50 if (isscalar (varargin{1}) && varargin{1} >= 0)
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51 sz = [varargin{1}, varargin{1}];
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52 elseif (isrow (varargin{1}) && all (varargin{1} >= 0))
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53 sz = varargin{1};
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54 else
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55 error ("geornd: dimension vector must be row vector of non-negative integers");
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56 endif
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57 elseif (nargin > 2)
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58 if (any (cellfun (@(x) (!isscalar (x) || x < 0), varargin)))
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59 error ("geornd: dimensions must be non-negative integers");
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60 endif
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61 sz = [varargin{:}];
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62 endif
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63
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64 if (!isscalar (p) && !isequal (size (p), sz))
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65 error ("geornd: P must be scalar or of size SZ");
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66 endif
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67
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68 if (iscomplex (p))
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69 error ("geornd: P must not be complex");
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70 endif
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71
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72 if (isa (p, "single"))
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73 cls = "single";
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74 else
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75 cls = "double";
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76 endif
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77
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78 if (isscalar (p))
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79 if (p > 0 && p < 1);
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80 rnd = floor (- rande (sz) ./ log (1 - p));
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81 elseif (p == 0)
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82 rnd = Inf (sz, cls);
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83 elseif (p == 1)
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84 rnd = zeros (sz, cls);
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85 elseif (p < 0 || p > 1)
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86 rnd = NaN (sz, cls);
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87 endif
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88 else
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89 rnd = floor (- rande (sz) ./ log (1 - p));
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90
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91 k = !(p >= 0) | !(p <= 1);
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92 rnd(k) = NaN;
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93
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94 k = (p == 0);
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95 rnd(k) = Inf;
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96 endif
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97
56e066f5efc1 [project @ 2005-07-13 17:43:35 by jwe]
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98 endfunction
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101 %!assert (size (geornd (0.5)), [1, 1])
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102 %!assert (size (geornd (0.5*ones (2,1))), [2, 1])
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103 %!assert (size (geornd (0.5*ones (2,2))), [2, 2])
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104 %!assert (size (geornd (0.5, 3)), [3, 3])
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105 %!assert (size (geornd (0.5, [4 1])), [4, 1])
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106 %!assert (size (geornd (0.5, 4, 1)), [4, 1])
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108 %% Test class of input preserved
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109 %!assert (class (geornd (0.5)), "double")
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110 %!assert (class (geornd (single (0.5))), "single")
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111 %!assert (class (geornd (single ([0.5 0.5]))), "single")
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112 %!assert (class (geornd (single (0))), "single")
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113 %!assert (class (geornd (single (1))), "single")
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115 %% Test input validation
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116 %!error geornd ()
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117 %!error geornd (ones (3), ones (2))
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118 %!error geornd (ones (2), ones (3))
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119 %!error geornd (i)
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120 %!error geornd (1, -1)
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121 %!error geornd (1, ones (2))
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122 %!error geornd (1, [2 -1 2])
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123 %!error geornd (ones (2,2), 2, 3)
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124 %!error geornd (ones (2,2), 3, 2)
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