Mercurial > octave
view examples/paramdemo.cc @ 17691:8a54a481ecb5
Massive speed improvement in sparse min/max functions for calls like
'max(s,[],2)' (bug #40268)
* dSparse.cc (SparseMatrix SparseMatrix::max (Array<octave_idx-type>&, int)) :
Remove triple loop by using a local buffer
(SparseMatrix SparseMatrix::min (Array<octave_idx-type>&, int)) : ditto
* CSparse.cc (SparseComplexMatrix SparseComplexMatrix::max (
Array<octave_idx-type>&, int)) : Remove triple loop by using a local buffer
(SparseComplexMatrix SparseComplexMatrix::min (Array<octave_idx-type>&,
int)) : ditto
author | David Bateman <dbateman@free.fr> |
---|---|
date | Fri, 18 Oct 2013 23:44:44 +0200 |
parents | be41c30bcb44 |
children |
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#include <octave/oct.h> DEFUN_DLD (paramdemo, args, nargout, "Parameter Check Demo") { octave_value retval; int nargin = args.length (); if (nargin != 1) print_usage (); else if (nargout != 0) error ("paramdemo: OUTPUT argument required"); else { NDArray m = args(0).array_value (); double min_val = -10.0; double max_val = 10.0; octave_stdout << "Properties of input array:\n"; if (m.any_element_is_negative ()) octave_stdout << " includes negative values\n"; if (m.any_element_is_inf_or_nan ()) octave_stdout << " includes Inf or NaN values\n"; if (m.any_element_not_one_or_zero ()) octave_stdout << " includes other values than 1 and 0\n"; if (m.all_elements_are_int_or_inf_or_nan ()) octave_stdout << " includes only int, Inf or NaN values\n"; if (m.all_integers (min_val, max_val)) octave_stdout << " includes only integers in [-10,10]\n"; } return retval; }