Mercurial > hg > octave-lyh

annotate libinterp/corefcn/__lin_interpn__.cc @ 17289:bc924baa2c4e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc: Add new @qcode macro for code samples which are quoted. Macro handles options ("on") or properties ("position") more elegantly than @code{"text"}. * doc/interpreter/macros.texi: Add new @qcode macro. * doc/interpreter/tips.txi: Add documentation about @qcode macro. * doc/interpreter/basics.txi, doc/interpreter/container.txi, doc/interpreter/emacs.txi, doc/interpreter/errors.txi, doc/interpreter/eval.txi, doc/interpreter/expr.txi, doc/interpreter/external.txi, doc/interpreter/func.txi, doc/interpreter/grammar.txi, doc/interpreter/image.txi, doc/interpreter/install.txi, doc/interpreter/interp.txi, doc/interpreter/io.txi, doc/interpreter/matrix.txi, doc/interpreter/numbers.txi, doc/interpreter/oop.txi, doc/interpreter/package.txi, doc/interpreter/plot.txi, doc/interpreter/quad.txi, doc/interpreter/sparse.txi, doc/interpreter/strings.txi, doc/interpreter/system.txi, doc/interpreter/vectorize.txi, libinterp/corefcn/balance.cc, libinterp/corefcn/bitfcns.cc, libinterp/corefcn/cellfun.cc, libinterp/corefcn/conv2.cc, libinterp/corefcn/data.cc, libinterp/corefcn/debug.cc, libinterp/corefcn/defaults.cc, libinterp/corefcn/dirfns.cc, libinterp/corefcn/dlmread.cc, libinterp/corefcn/error.cc, libinterp/corefcn/file-io.cc, libinterp/corefcn/find.cc, libinterp/corefcn/gammainc.cc, libinterp/corefcn/graphics.cc, libinterp/corefcn/help.cc, libinterp/corefcn/hex2num.cc, libinterp/corefcn/input.cc, libinterp/corefcn/load-path.cc, libinterp/corefcn/load-save.cc, libinterp/corefcn/ls-oct-ascii.cc, libinterp/corefcn/lu.cc, libinterp/corefcn/luinc.cc, libinterp/corefcn/matrix_type.cc, libinterp/corefcn/oct-hist.cc, libinterp/corefcn/pager.cc, libinterp/corefcn/pr-output.cc, libinterp/corefcn/pt-jit.cc, libinterp/corefcn/qz.cc, libinterp/corefcn/rand.cc, libinterp/corefcn/regexp.cc, libinterp/corefcn/schur.cc, libinterp/corefcn/sighandlers.cc, libinterp/corefcn/sparse.cc, libinterp/corefcn/spparms.cc, libinterp/corefcn/str2double.cc, libinterp/corefcn/svd.cc, libinterp/corefcn/symtab.cc, libinterp/corefcn/syscalls.cc, libinterp/corefcn/toplev.cc, libinterp/corefcn/tril.cc, libinterp/corefcn/typecast.cc, libinterp/corefcn/utils.cc, libinterp/corefcn/variables.cc, libinterp/dldfcn/__init_fltk__.cc, libinterp/dldfcn/chol.cc, libinterp/dldfcn/colamd.cc, libinterp/dldfcn/fftw.cc, libinterp/dldfcn/qr.cc, libinterp/dldfcn/symbfact.cc, libinterp/octave-value/ov-base.cc, libinterp/octave-value/ov-fcn-handle.cc, libinterp/octave-value/ov-fcn-inline.cc, libinterp/octave-value/ov-java.cc, libinterp/octave-value/ov-range.cc, libinterp/octave-value/ov-struct.cc, libinterp/octave-value/ov-usr-fcn.cc, libinterp/parse-tree/oct-parse.in.yy, libinterp/parse-tree/pt-binop.cc, libinterp/parse-tree/pt-eval.cc, libinterp/parse-tree/pt-mat.cc, scripts/@ftp/ftp.m, scripts/deprecated/java_convert_matrix.m, scripts/deprecated/java_debug.m, scripts/deprecated/java_unsigned_conversion.m, scripts/deprecated/shell_cmd.m, scripts/general/dblquad.m, scripts/general/display.m, scripts/general/genvarname.m, scripts/general/idivide.m, scripts/general/interp1.m, scripts/general/interp2.m, scripts/general/interp3.m, scripts/general/interpn.m, scripts/general/isa.m, scripts/general/profexplore.m, scripts/general/profile.m, scripts/general/quadgk.m, scripts/general/randi.m, scripts/general/structfun.m, scripts/general/subsindex.m, scripts/general/triplequad.m, scripts/geometry/griddata.m, scripts/geometry/griddata3.m, scripts/geometry/griddatan.m, scripts/geometry/voronoi.m, scripts/help/help.m, scripts/help/lookfor.m, scripts/image/cmpermute.m, scripts/image/colormap.m, scripts/image/image.m, scripts/image/imagesc.m, scripts/image/imfinfo.m, scripts/image/imformats.m, scripts/image/imread.m, scripts/image/imshow.m, scripts/image/imwrite.m, scripts/image/ind2gray.m, scripts/image/lines.m, scripts/image/rgb2ind.m, scripts/image/spinmap.m, scripts/io/dlmwrite.m, scripts/io/strread.m, scripts/io/textread.m, scripts/io/textscan.m, scripts/java/javaclasspath.m, scripts/java/usejava.m, scripts/miscellaneous/bzip2.m, scripts/miscellaneous/computer.m, scripts/miscellaneous/copyfile.m, scripts/miscellaneous/debug.m, scripts/miscellaneous/dos.m, scripts/miscellaneous/edit.m, scripts/miscellaneous/gzip.m, scripts/miscellaneous/license.m, scripts/miscellaneous/mkoctfile.m, scripts/miscellaneous/movefile.m, scripts/miscellaneous/parseparams.m, scripts/miscellaneous/unix.m, scripts/optimization/fminbnd.m, scripts/optimization/fminsearch.m, scripts/optimization/fminunc.m, scripts/optimization/fsolve.m, scripts/optimization/fzero.m, scripts/optimization/glpk.m, scripts/optimization/lsqnonneg.m, scripts/optimization/optimset.m, scripts/optimization/pqpnonneg.m, scripts/pkg/pkg.m, scripts/plot/allchild.m, scripts/plot/ancestor.m, scripts/plot/area.m, scripts/plot/axis.m, scripts/plot/bar.m, scripts/plot/barh.m, scripts/plot/box.m, scripts/plot/caxis.m, scripts/plot/cla.m, scripts/plot/clabel.m, scripts/plot/clf.m, scripts/plot/close.m, scripts/plot/colorbar.m, scripts/plot/daspect.m, scripts/plot/ezmesh.m, scripts/plot/ezmeshc.m, scripts/plot/ezsurf.m, scripts/plot/ezsurfc.m, scripts/plot/findall.m, scripts/plot/findobj.m, scripts/plot/gcbo.m, scripts/plot/gcf.m, scripts/plot/gco.m, scripts/plot/grid.m, scripts/plot/guihandles.m, scripts/plot/hdl2struct.m, scripts/plot/hidden.m, scripts/plot/hold.m, scripts/plot/isonormals.m, scripts/plot/isosurface.m, scripts/plot/legend.m, scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m, scripts/plot/newplot.m, scripts/plot/orient.m, scripts/plot/pareto.m, scripts/plot/patch.m, scripts/plot/pbaspect.m, scripts/plot/pcolor.m, scripts/plot/plot.m, scripts/plot/print.m, scripts/plot/private/__add_default_menu__.m, scripts/plot/quiver.m, scripts/plot/quiver3.m, scripts/plot/refreshdata.m, scripts/plot/saveas.m, scripts/plot/scatter.m, scripts/plot/scatter3.m, scripts/plot/shading.m, scripts/plot/shrinkfaces.m, scripts/plot/slice.m, scripts/plot/stem.m, scripts/plot/stem3.m, scripts/plot/struct2hdl.m, scripts/plot/subplot.m, scripts/plot/surf.m, scripts/plot/surfc.m, scripts/plot/surfl.m, scripts/plot/tetramesh.m, scripts/plot/uigetfile.m, scripts/plot/uimenu.m, scripts/plot/uiputfile.m, scripts/plot/waterfall.m, scripts/plot/whitebg.m, scripts/plot/xlim.m, scripts/plot/ylim.m, scripts/plot/zlim.m, scripts/polynomial/conv.m, scripts/polynomial/polyout.m, scripts/polynomial/splinefit.m, scripts/set/ismember.m, scripts/set/powerset.m, scripts/set/setdiff.m, scripts/set/union.m, scripts/set/unique.m, scripts/signal/detrend.m, scripts/signal/filter2.m, scripts/signal/freqz.m, scripts/signal/periodogram.m, scripts/signal/spectral_adf.m, scripts/signal/spectral_xdf.m, scripts/sparse/eigs.m, scripts/sparse/svds.m, scripts/specfun/legendre.m, scripts/special-matrix/gallery.m, scripts/statistics/base/mean.m, scripts/statistics/base/moment.m, scripts/statistics/tests/cor_test.m, scripts/statistics/tests/kolmogorov_smirnov_test.m, scripts/statistics/tests/kolmogorov_smirnov_test_2.m, scripts/statistics/tests/kruskal_wallis_test.m, scripts/statistics/tests/prop_test_2.m, scripts/statistics/tests/sign_test.m, scripts/statistics/tests/t_test.m, scripts/statistics/tests/t_test_2.m, scripts/statistics/tests/t_test_regression.m, scripts/statistics/tests/u_test.m, scripts/statistics/tests/var_test.m, scripts/statistics/tests/welch_test.m, scripts/statistics/tests/wilcoxon_test.m, scripts/statistics/tests/z_test.m, scripts/statistics/tests/z_test_2.m, scripts/strings/base2dec.m, scripts/strings/index.m, scripts/strings/isstrprop.m, scripts/strings/mat2str.m, scripts/strings/regexptranslate.m, scripts/strings/rindex.m, scripts/strings/str2num.m, scripts/strings/strcat.m, scripts/strings/strjust.m, scripts/strings/strmatch.m, scripts/strings/validatestring.m, scripts/testfun/demo.m, scripts/testfun/example.m, scripts/testfun/test.m, scripts/time/addtodate.m, scripts/time/asctime.m, scripts/time/datestr.m, scripts/time/datetick.m, scripts/time/weekday.m, scripts/ui/errordlg.m, scripts/ui/helpdlg.m, scripts/ui/inputdlg.m, scripts/ui/listdlg.m, scripts/ui/msgbox.m, scripts/ui/questdlg.m, scripts/ui/warndlg.m: Use new @qcode macro.
author Rik <rik@octave.org>
date Mon, 19 Aug 2013 20:46:38 -0700
parents 2fc554ffbc28
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
1 /*
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
2
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 12805
diff changeset
3 Copyright (C) 2007-2012 Alexander Barth
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
4
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
5 This file is part of Octave.
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
6
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
7 Octave is free software; you can redistribute it and/or modify it
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
8 under the terms of the GNU General Public License as published by the
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6945
diff changeset
9 Free Software Foundation; either version 3 of the License, or (at your
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6945
diff changeset
10 option) any later version.
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
11
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
12 Octave is distributed in the hope that it will be useful, but WITHOUT
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
15 for more details.
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
16
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
17 You should have received a copy of the GNU General Public License
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6945
diff changeset
18 along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6945
diff changeset
19 <http://www.gnu.org/licenses/>.
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
20
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
21 */
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
22
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
23 #ifdef HAVE_CONFIG_H
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
24 #include <config.h>
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
25 #endif
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
26
9003
0631d397fbe0 replace lo_ieee_isnan by xisnan, add missing includes
Jaroslav Hajek <highegg@gmail.com>
parents: 8920
diff changeset
27 #include "lo-ieee.h"
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
28 #include "dNDArray.h"
8377
25bc2d31e1bf improve OCTAVE_LOCAL_BUFFER
Jaroslav Hajek <highegg@gmail.com>
parents: 7789
diff changeset
29 #include "oct-locbuf.h"
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
30
15039
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents: 14846
diff changeset
31 #include "defun.h"
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
32 #include "error.h"
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
33 #include "oct-obj.h"
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
34
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
35 // equivalent to isvector.m
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
36
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
37 template <class T>
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
38 bool
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
39 isvector (const T& array)
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
40 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
41 const dim_vector dv = array.dims ();
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
42 return dv.length () == 2 && (dv(0) == 1 || dv(1) == 1);
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
43 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
44
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
45 // lookup a value in a sorted table (lookup.m)
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
46 template <class T>
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
47 octave_idx_type
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
48 lookup (const T *x, octave_idx_type n, T y)
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
49 {
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
50 octave_idx_type j;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
51
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
52 if (x[0] < x[n-1])
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
53 {
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
54 // increasing x
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
55
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
56 if (y > x[n-1] || y < x[0])
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
57 return -1;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
58
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
59 #ifdef EXHAUSTIF
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
60 for (j = 0; j < n - 1; j++)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
61 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
62 if (x[j] <= y && y <= x[j+1])
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
63 return j;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
64 }
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
65 #else
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
66 octave_idx_type j0 = 0;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
67 octave_idx_type j1 = n - 1;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
68
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
69 while (true)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
70 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
71 j = (j0+j1)/2;
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
72
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
73 if (y <= x[j+1])
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
74 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
75 if (x[j] <= y)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
76 return j;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
77
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
78 j1 = j;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
79 }
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
80
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
81 if (x[j] <= y)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
82 j0 = j;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
83 }
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
84 #endif
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
85 }
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
86 else
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
87 {
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
88 // decreasing x
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
89 // previous code with x -> -x and y -> -y
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
90
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
91 if (y > x[0] || y < x[n-1])
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
92 return -1;
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
93
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
94 #ifdef EXHAUSTIF
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
95 for (j = 0; j < n - 1; j++)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
96 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
97 if (x[j+1] <= y && y <= x[j])
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
98 return j;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
99 }
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
100 #else
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
101 octave_idx_type j0 = 0;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
102 octave_idx_type j1 = n - 1;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
103
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
104 while (true)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
105 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
106 j = (j0+j1)/2;
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
107
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
108 if (y >= x[j+1])
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
109 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
110 if (x[j] >= y)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
111 return j;
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
112
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
113 j1 = j;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
114 }
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
115
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
116 if (x[j] >= y)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
117 j0 = j;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
118 }
7561
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values
Alexander Barth
parents: 7016
diff changeset
119 #endif
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
120 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
121 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
122
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
123 // n-dimensional linear interpolation
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
124
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
125 template <class T>
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
126 void
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
127 lin_interpn (int n, const octave_idx_type *size, const octave_idx_type *scale,
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
128 octave_idx_type Ni, T extrapval, const T **x,
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
129 const T *v, const T **y, T *vi)
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
130 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
131 bool out = false;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
132 int bit;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
133
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
134 OCTAVE_LOCAL_BUFFER (T, coef, 2*n);
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
135 OCTAVE_LOCAL_BUFFER (octave_idx_type, index, n);
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
136
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
137 // loop over all points
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
138 for (octave_idx_type m = 0; m < Ni; m++)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
139 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
140 // loop over all dimensions
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
141 for (int i = 0; i < n; i++)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
142 {
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
143 index[i] = lookup (x[i], size[i], y[i][m]);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
144 out = index[i] == -1;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
145
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
146 if (out)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
147 break;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
148 else
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
149 {
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
150 octave_idx_type j = index[i];
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
151 coef[2*i+1] = (y[i][m] - x[i][j])/(x[i][j+1] - x[i][j]);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
152 coef[2*i] = 1 - coef[2*i+1];
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
153 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
154 }
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
155
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
156
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
157 if (out)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
158 vi[m] = extrapval;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
159 else
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
160 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
161 vi[m] = 0;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
162
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
163 // loop over all corners of hypercube (1<<n = 2^n)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
164 for (int i = 0; i < (1 << n); i++)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
165 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
166 T c = 1;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
167 octave_idx_type l = 0;
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
168
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
169 // loop over all dimensions
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
170 for (int j = 0; j < n; j++)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
171 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
172 // test if the jth bit in i is set
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
173 bit = i >> j & 1;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
174 l += scale[j] * (index[j] + bit);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
175 c *= coef[2*j+bit];
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
176 }
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
177
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
178 vi[m] += c * v[l];
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
179 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
180 }
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
181 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
182 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
183
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
184 template <class T, class M>
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
185 octave_value
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
186 lin_interpn (int n, M *X, const M V, M *Y)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
187 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
188 octave_value retval;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
189
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
190 M Vi = M (Y[0].dims ());
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
191
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
192 OCTAVE_LOCAL_BUFFER (const T *, y, n);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
193 OCTAVE_LOCAL_BUFFER (octave_idx_type, size, n);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
194
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
195 for (int i = 0; i < n; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
196 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
197 y[i] = Y[i].data ();
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
198 size[i] = V.dims ()(i);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
199 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
200
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
201 OCTAVE_LOCAL_BUFFER (const T *, x, n);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
202 OCTAVE_LOCAL_BUFFER (octave_idx_type, scale, n);
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
203
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
204 const T *v = V.data ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
205 T *vi = Vi.fortran_vec ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
206 octave_idx_type Ni = Vi.numel ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
207
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
208 T extrapval = octave_NA;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
209
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
210 // offset in memory of each dimension
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
211
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
212 scale[0] = 1;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
213
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
214 for (int i = 1; i < n; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
215 scale[i] = scale[i-1] * size[i-1];
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
216
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
217 // tests if X[0] is a vector, if yes, assume that all elements of X are
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
218 // in the ndgrid format.
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
219
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
220 if (! isvector (X[0]))
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
221 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
222 for (int i = 0; i < n; i++)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
223 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
224 if (X[i].dims () != V.dims ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
225 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
226 error ("interpn: incompatible size of argument number %d", i+1);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
227 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
228 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
229 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
230 {
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
231 M tmp = M (dim_vector (size[i], 1));
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
232
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
233 for (octave_idx_type j = 0; j < size[i]; j++)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
234 tmp(j) = X[i](scale[i]*j);
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
235
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
236 X[i] = tmp;
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
237 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
238 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
239 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
240
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
241 for (int i = 0; i < n; i++)
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
242 {
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
243 if (! isvector (X[i]) && X[i].numel () != size[i])
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
244 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
245 error ("interpn: incompatible size of argument number %d", i+1);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
246 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
247 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
248 else
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
249 x[i] = X[i].data ();
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
250 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
251
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
252 lin_interpn (n, size, scale, Ni, extrapval, x, v, y, vi);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
253
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
254 retval = Vi;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
255
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
256 return retval;
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
257 }
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
258
6945
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
259 // Perform @var{n}-dimensional interpolation. Each element of then
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
260 // @var{n}-dimensional array @var{v} represents a value at a location
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
261 // given by the parameters @var{x1}, @var{x2},...,@var{xn}. The parameters
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
262 // @var{x1}, @var{x2}, @dots{}, @var{xn} are either @var{n}-dimensional
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
263 // arrays of the same size as the array @var{v} in the \"ndgrid\" format
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
264 // or vectors. The parameters @var{y1}, @var{y2}, @dots{}, @var{yn} are
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
265 // all @var{n}-dimensional arrays of the same size and represent the
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
266 // points at which the array @var{vi} is interpolated.
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
267 //
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
268 //This function only performs linear interpolation.
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
269
15039
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents: 14846
diff changeset
270 DEFUN (__lin_interpn__, args, ,
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
271 "-*- texinfo -*-\n\
15039
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents: 14846
diff changeset
272 @deftypefn {Built-in Function} {@var{vi} =} __lin_interpn__ (@var{x1}, @var{x2}, @dots{}, @var{xn}, @var{v}, @var{y1}, @var{y2}, @dots{}, @var{yn})\n\
6945
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe]
jwe
parents: 6742
diff changeset
273 Undocumented internal function.\n\
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
274 @end deftypefn")
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
275 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
276 octave_value retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
277
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
278 int nargin = args.length ();
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
279
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
280 if (nargin < 2 || nargin % 2 == 0)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
281 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
282 print_usage ();
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
283 return retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
284 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
285
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
286 // dimension of the problem
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
287 int n = (nargin-1)/2;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
288
14846
460a3c6d8bf1 maint: Use Octave coding convention for cuddled parenthis in function calls with empty argument lists.
Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
289 if (args(n).is_single_type ())
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
290 {
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
291 OCTAVE_LOCAL_BUFFER (FloatNDArray, X, n);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
292 OCTAVE_LOCAL_BUFFER (FloatNDArray, Y, n);
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
293
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
294 const FloatNDArray V = args(n).float_array_value ();
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
295
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
296 if (error_state)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
297 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
298 print_usage ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
299 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
300 }
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
301
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
302 for (int i = 0; i < n; i++)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
303 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
304 X[i] = args(i).float_array_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
305 Y[i] = args(n+i+1).float_array_value ();
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
306
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
307 if (error_state)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
308 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
309 print_usage ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
310 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
311 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
312
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
313 if (Y[0].dims () != Y[i].dims ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
314 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
315 error ("interpn: incompatible size of argument number %d", n+i+2);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
316 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
317 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
318 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
319
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
320 retval = lin_interpn<float, FloatNDArray> (n, X, V, Y);
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
321 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
322 else
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
323 {
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
324 OCTAVE_LOCAL_BUFFER (NDArray, X, n);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
325 OCTAVE_LOCAL_BUFFER (NDArray, Y, n);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
326
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
327 const NDArray V = args(n).array_value ();
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
328
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
329 if (error_state)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
330 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
331 print_usage ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
332 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
333 }
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
334
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
335 for (int i = 0; i < n; i++)
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
336 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
337 X[i] = args(i).array_value ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
338 Y[i] = args(n+i+1).array_value ();
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
339
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
340 if (error_state)
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
341 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
342 print_usage ();
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
343 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
344 }
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
345
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
346 if (Y[0].dims () != Y[i].dims ())
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
347 {
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
348 error ("interpn: incompatible size of argument number %d", n+i+2);
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
349 return retval;
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
350 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9003
diff changeset
351 }
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
352
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
353 retval = lin_interpn<double, NDArray> (n, X, V, Y);
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7561
diff changeset
354 }
6702
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
355
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
356 return retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman]
dbateman
parents:
diff changeset
357 }
12805
3641167e5b75 codesprint: *.cc helper functions do not need tests
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
358
3641167e5b75 codesprint: *.cc helper functions do not need tests
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
359 /*
3641167e5b75 codesprint: *.cc helper functions do not need tests
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
360 ## No test needed for internal helper function.
3641167e5b75 codesprint: *.cc helper functions do not need tests
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
361 %!assert (1)
3641167e5b75 codesprint: *.cc helper functions do not need tests
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
362 */