octave-lyh: src/DLD-FUNCTIONS/__lin_interpn_

annotate src/DLD-FUNCTIONS/__lin_interpn__.cc @ 8377:25bc2d31e1bf

improve OCTAVE_LOCAL_BUFFER

author	Jaroslav Hajek <highegg@gmail.com>
date	Wed, 29 Oct 2008 16:52:10 +0100
parents	82be108cc558
children	eb63fbe60fab

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
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	3 Copyright (C) 2007 Alexander Barth
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
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	27 #include "dNDArray.h"
8377 25bc2d31e1bf improve OCTAVE_LOCAL_BUFFER Jaroslav Hajek <highegg@gmail.com> parents: 7789 diff changeset	28 #include "oct-locbuf.h"
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	29
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	30 #include "defun-dld.h"
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	31 #include "error.h"
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	32 #include "oct-obj.h"
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	33
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	34 // equivalent to isvector.m
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	35
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	36 template <class T>
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	37 bool
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	38 isvector (const T& array)
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	39 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	40 const dim_vector dv = array.dims ();
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	41 return dv.length () == 2 && (dv(0) == 1 \|\| dv(1) == 1);
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	42 }
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 // 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	45 template <class T>
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	46 octave_idx_type
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	47 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	48 {
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	49 octave_idx_type j;
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	50
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	51 if (x[0] < x[n-1])
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	52 {
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	53 // increasing x
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	54
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	55 if (y > x[n-1] \|\| y < x[0])
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	56 return -1;
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	57
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	58 #ifdef EXHAUSTIF
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	59 for (j = 0; j < n - 1; j++)
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	60 {
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	61 if (x[j] <= y && y <= x[j+1])
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	62 return j;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	63 }
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	64 #else
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	65 octave_idx_type j0 = 0;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	66 octave_idx_type j1 = n - 1;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	67
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	68 while (true)
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	69 {
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	70 j = (j0+j1)/2;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	71
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	72 if (y <= x[j+1])
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	73 {
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	74 if (x[j] <= y)
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	75 return j;
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	76
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	77 j1 = j;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	78 }
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	79
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	80 if (x[j] <= y)
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	81 j0 = j;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	82 }
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	83 #endif
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	84 }
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	85 else
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	86 {
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	87 // decreasing x
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	88 // previous code with x -> -x and y -> -y
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	89
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	90 if (y > x[0] \|\| y < x[n-1])
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	91 return -1;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	92
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	93 #ifdef EXHAUSTIF
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	94 for (j = 0; j < n - 1; j++)
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	95 {
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	96 if (x[j+1] <= y && y <= x[j])
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	97 return j;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	98 }
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	99 #else
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	100 octave_idx_type j0 = 0;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	101 octave_idx_type j1 = n - 1;
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	102
7561 a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	103 while (true)
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	104 {
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	105 j = (j0+j1)/2;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	106
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	107 if (y >= x[j+1])
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	108 {
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	109 if (x[j] >= y)
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	110 return j;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	111
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	112 j1 = j;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	113 }
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	114
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	115 if (x[j] >= y)
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	116 j0 = j;
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	117 }
a938cd7869b2 __lin_interpn__.cc: handle decreasing coordinate values Alexander Barth parents: 7016 diff changeset	118 #endif
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	119 }
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 // n-dimensional linear interpolation
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	123
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	124 template <class T>
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	125 void
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	126 lin_interpn (int n, const octave_idx_type size, const octave_idx_type scale,
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	127 octave_idx_type Ni, T extrapval, const T **x,
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	128 const T v, const T y, T vi)
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	129 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	130 bool out = false;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	131 int bit;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	132
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	133 OCTAVE_LOCAL_BUFFER (T, coef, 2*n);
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	134 OCTAVE_LOCAL_BUFFER (octave_idx_type, index, n);
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	135
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	136 // loop over all points
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	137 for (octave_idx_type m = 0; m < Ni; m++)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	138 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	139 // loop over all dimensions
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	140 for (int i = 0; i < n; i++)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	141 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	142 index[i] = lookup (x[i], size[i], y[i][m]);
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	143 out = index[i] == -1;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	144
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	145 if (out)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	146 break;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	147 else
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	148 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	149 octave_idx_type j = index[i];
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	150 coef[2*i+1] = (y[i][m] - x[i][j])/(x[i][j+1] - x[i][j]);
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	151 coef[2i] = 1 - coef[2i+1];
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	152 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	153 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	154
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 if (out)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	157 vi[m] = extrapval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	158 else
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	159 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	160 vi[m] = 0;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	161
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	162 // loop over all corners of hypercube (1<<n = 2^n)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	163 for (int i = 0; i < (1 << n); i++)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	164 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	165 T c = 1;
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	166 octave_idx_type l = 0;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	167
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	168 // loop over all dimensions
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	169 for (int j = 0; j < n; j++)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	170 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	171 // test if the jth bit in i is set
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	172 bit = i >> j & 1;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	173 l += scale[j] * (index[j] + bit);
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	174 c = coef[2j+bit];
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	175 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	176
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	177 vi[m] += c * v[l];
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	178 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	179 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	180 }
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
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	183 template <class T, class M>
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	184 octave_value
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	185 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	186 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	187 octave_value retval;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	188
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	189 M Vi = M (Y[0].dims ());
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	190
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	191 OCTAVE_LOCAL_BUFFER (const T *, y, n);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	192 OCTAVE_LOCAL_BUFFER (octave_idx_type, size, n);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	193
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	194 for (int i = 0; i < n; i++)
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	195 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	196 y[i] = Y[i].data ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	197 size[i] = V.dims()(i);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	198 }
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 OCTAVE_LOCAL_BUFFER (const T *, x, n);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	201 OCTAVE_LOCAL_BUFFER (octave_idx_type, scale, n);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	202
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	203 const T *v = V.data ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	204 T *vi = Vi.fortran_vec ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	205 octave_idx_type Ni = Vi.numel ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	206
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	207 T extrapval = octave_NA;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	208
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	209 // offset in memory of each dimension
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	210
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	211 scale[0] = 1;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	212
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	213 for (int i = 1; i < n; i++)
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	214 scale[i] = scale[i-1] * size[i-1];
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	215
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	216 // 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	217 // in the ndgrid format.
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	218
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	219 if (! isvector (X[0]))
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	220 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	221 for (int i = 0; i < n; i++)
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	222 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	223 if (X[i].dims () != V.dims ())
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	224 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	225 error ("interpn: incompatible size of argument number %d", i+1);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	226 return retval;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	227 }
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	228 else
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	229 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	230 M tmp = M (dim_vector (size[i], 1));
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	231
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	232 for (octave_idx_type j = 0; j < size[i]; j++)
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	233 tmp(j) = X[i](scale[i]*j);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	234
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	235 X[i] = tmp;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	236 }
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	237 }
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	238 }
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 for (int i = 0; i < n; i++)
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	241 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	242 if (! isvector (X[i]) && X[i].numel () != size[i])
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	243 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	244 error ("interpn: incompatible size of argument number %d", i+1);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	245 return retval;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	246 }
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	247 else
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	248 x[i] = X[i].data ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	249 }
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 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	252
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	253 retval = Vi;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	254
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	255 return retval;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	256 }
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	257
6945 6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe] jwe parents: 6742 diff changeset	258 // Perform @var{n}-dimensional interpolation. Each element of then
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe] jwe parents: 6742 diff changeset	259 // @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	260 // 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	261 // @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	262 // 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	263 // 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	264 // 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	265 // points at which the array @var{vi} is interpolated.
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe] jwe parents: 6742 diff changeset	266 //
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe] jwe parents: 6742 diff changeset	267 //This function only performs linear interpolation.
6bbf56a9718a [project @ 2007-10-02 20:47:22 by jwe] jwe parents: 6742 diff changeset	268
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	269 DEFUN_DLD (__lin_interpn__, args, ,
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	270 "-- texinfo --\n\
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	271 @deftypefn {Loadable 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	272 Undocumented internal function.\n\
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	273 @end deftypefn")
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	274 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	275 octave_value retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	276
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	277 int nargin = args.length ();
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	278
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	279 if (nargin < 2 \|\| nargin % 2 == 0)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	280 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	281 print_usage ();
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	282 return retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	283 }
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 // dimension of the problem
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	286 int n = (nargin-1)/2;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	287
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	288 if (args(n).is_single_type())
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	289 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	290 OCTAVE_LOCAL_BUFFER (FloatNDArray, X, n);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	291 OCTAVE_LOCAL_BUFFER (FloatNDArray, Y, n);
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	292
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	293 const FloatNDArray V = args(n).float_array_value ();
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	294
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	295 if (error_state)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	296 {
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	297 print_usage ();
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	298 return retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	299 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	300
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	301 for (int i = 0; i < n; i++)
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	302 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	303 X[i] = args(i).float_array_value ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	304 Y[i] = args(n+i+1).float_array_value ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	305
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	306 if (error_state)
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	307 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	308 print_usage ();
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	309 return retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	310 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	311
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	312 if (Y[0].dims () != Y[i].dims ())
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	313 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	314 error ("interpn: incompatible size of argument number %d", n+i+2);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	315 return retval;
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	316 }
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	317 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	318
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	319 retval = lin_interpn<float, FloatNDArray> (n, X, V, Y);
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	320 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	321 else
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	322 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	323 OCTAVE_LOCAL_BUFFER (NDArray, X, n);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	324 OCTAVE_LOCAL_BUFFER (NDArray, Y, n);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	325
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	326 const NDArray V = args(n).array_value ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	327
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	328 if (error_state)
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	329 {
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	330 print_usage ();
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	331 return retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	332 }
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	333
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	334 for (int i = 0; i < n; i++)
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	335 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	336 X[i] = args(i).array_value ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	337 Y[i] = args(n+i+1).array_value ();
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	338
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	339 if (error_state)
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	340 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	341 print_usage ();
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	342 return retval;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	343 }
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	344
7789 82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	345 if (Y[0].dims () != Y[i].dims ())
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	346 {
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	347 error ("interpn: incompatible size of argument number %d", n+i+2);
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	348 return retval;
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	349 }
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	350 }
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	351
82be108cc558 First attempt at single precision tyeps David Bateman <dbateman@free.fr> parents: 7561 diff changeset	352 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	353 }
6702 b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	354
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	355 return retval;
b2391d403ed2 [project @ 2007-06-12 21:39:26 by dbateman] dbateman parents: diff changeset	356 }

Mercurial > hg > octave-lyh

annotate src/DLD-FUNCTIONS/__lin_interpn__.cc @ 8377:25bc2d31e1bf