/usr/share/octave/packages/optim-1.5.2/statset.m is in octave-optim 1.5.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | ## Copyright (C) 2007-2015 John W. Eaton
## Copyright (C) 2009 VZLU Prague
##
## This function is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or (at
## your option) any later version.
##
## This function is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this function; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} statset ()
## @deftypefnx {Function File} {@var{options} =} statset ()
## @deftypefnx {Function File} {@var{options} =} statset (@var{par}, @var{val}, @dots{})
## @deftypefnx {Function File} {@var{options} =} statset (@var{old}, @var{par}, @var{val}, @dots{})
## @deftypefnx {Function File} {@var{options} =} statset (@var{old}, @var{new})
## Create options structure for statistics functions.
##
## When called without any input or output arguments, @code{statset} prints
## a list of all valid statistics parameters.
##
## When called with one output and no inputs, return an options structure with
## all valid option parameters initialized to @code{[]}.
##
## When called with a list of parameter/value pairs, return an options
## structure with only the named parameters initialized.
##
## When the first input is an existing options structure @var{old}, the values
## are updated from either the @var{par}/@var{val} list or from the options
## structure @var{new}.
##
## Please see individual statistics functions for valid settings.
##
## @seealso{statget}
## @end deftypefn
## Copied from Octave (was 'optimset') (Asma Afzal <asmaafzal5@gmail.com>).
function retval = statset (varargin)
nargs = nargin ();
opts = __all_stat_opts__ ();
if (nargs == 0)
if (nargout == 0)
## Display possibilities.
puts ("\nAll possible statistics options:\n\n");
printf (" %s\n", opts{:});
puts ("\n");
else
## Return struct with all options initialized to []
retval = cell2struct (repmat ({[]}, size (opts)), opts, 2);
endif
elseif (nargs == 1 && ischar (varargin{1}))
## Return defaults for named function.
fcn = varargin{1};
try
retval = feval (fcn, "defaults");
catch
error ("statset: no defaults for function '%s'", fcn);
end_try_catch
elseif (nargs == 2 && isstruct (varargin{1}) && isstruct (varargin{2}))
## Set slots in old from non-empties in new.
## Should we be checking to ensure that the field names are expected?
old = varargin{1};
new = varargin{2};
fnames = fieldnames (old);
## skip validation if we're in the internal query
validation = ! isempty (opts);
for [val, key] = new
if (validation)
## Case insensitive lookup in all options.
i = strncmpi (opts, key, length (key));
nmatch = sum (i);
## Validate option.
if (nmatch == 1)
key = opts{find (i)};
elseif (nmatch == 0)
warning ("statset: unrecognized option: %s", key);
else
fmt = sprintf ("statset: ambiguous option: %%s (%s%%s)",
repmat ("%s, ", 1, nmatch-1));
warning (fmt, key, opts{i});
endif
endif
old.(key) = val;
endfor
retval = old;
elseif (rem (nargs, 2) && isstruct (varargin{1}))
## Set values in old from name/value pairs.
pairs = reshape (varargin(2:end), 2, []);
retval = statset (varargin{1}, cell2struct (pairs(2, :), pairs(1, :), 2));
elseif (rem (nargs, 2) == 0)
## Create struct.
## Default values are replaced by those specified by name/value pairs.
pairs = reshape (varargin, 2, []);
retval = statset (struct (), cell2struct (pairs(2, :), pairs(1, :), 2));
else
print_usage ();
endif
endfunction
%!assert (isfield (statset (), "TolFun"))
%!assert (isfield (statset ("tolFun", 1e-3), "TolFun"))
## Test input validation
%!error statset ("1_Parameter")
%!error <no defaults for function> statset ("%NOT_A_REAL_FUNCTION_NAME%")
%!warning <statset: unrecognized option: foobar> statset ("foobar", 13);
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