/usr/share/octave/packages/interval-1.4.1/@infsupdec/mince.m is in octave-interval 1.4.1-1.
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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 | ## Copyright 2015-2016 Oliver Heimlich
##
## This program 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 program 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 program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @documentencoding UTF-8
## @defmethod {@@infsupdec} mince (@var{X})
## @defmethodx {@@infsupdec} mince (@var{X}, @var{N})
##
## Mince interval @var{X} into a row vector of @var{N} sub-intervals of equal
## size.
##
## The sub-intervals are returned in ascending order and may overlap due to
## round-off errors.
##
## If @var{X} is not a scalar, the result is a matrix. The default value for
## @var{N} is 100.
##
## Accuracy: The result is an accurate enclosure.
##
## @example
## @group
## mince (infsupdec (0, 10), 4)
## @result{} ans = 1×4 interval vector
##
## [0, 2.5]_trv [2.5, 5]_trv [5, 7.5]_trv [7.5, 10]_trv
## @end group
## @end example
## @seealso{@@infsupdec/linspace, @@infsupdec/bisect}
## @end defmethod
## Author: Oliver Heimlich
## Keywords: interval
## Created: 2015-07-19
function result = mince (x, n)
if (nargin > 2)
print_usage ();
return
endif
if (not (isa (x, "infsupdec")))
x = infsupdec (x);
endif
if (nargin < 2)
n = 100;
endif
if (isnai (x))
result = x;
return
endif
result = infsupdec (mince (intervalpart (x), n), "trv");
endfunction
%!xtest assert (isequal (mince (infsupdec (0, 10), 10), infsupdec (0 : 9, 1 : 10, "trv")));
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