octave-nkf: libinterp/corefcn/tsearch.cc annotate

annotate libinterp/corefcn/tsearch.cc @ 20587:f90c8372b7ba

eliminate many more simple uses of error_state * Cell.cc, __ichol__.cc, __ilu__.cc, balance.cc, bsxfun.cc, colloc.cc, det.cc, dlmread.cc, dynamic-ld.cc, eig.cc, fft.cc, fft2.cc, fftn.cc, gcd.cc, getgrent.cc, getpwent.cc, givens.cc, hess.cc, input.cc, levenshtein.cc, load-path.cc, lookup.cc, ls-mat-ascii.cc, ls-mat4.cc, lsode.cc, lu.cc, max.cc, md5sum.cc, mex.cc, pager.cc, pinv.cc, pr-output.cc, qz.cc, schur.cc, sparse.cc, sqrtm.cc, str2double.cc, strfns.cc, sub2ind.cc, sysdep.cc, time.cc, toplev.cc, tril.cc, tsearch.cc, typecast.cc, __init_gnuplot__.cc, __magick_read__.cc, __osmesa_print__.cc, amd.cc, audiodevinfo.cc, dmperm.cc, fftw.cc, symrcm.cc, ov-base-diag.cc, ov-base-sparse.cc, ov-base.cc, ov-bool-sparse.cc, ov-builtin.cc, ov-complex.cc, ov-cx-diag.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-fcn-handle.cc, ov-fcn-inline.cc, ov-float.cc, ov-flt-complex.cc, ov-flt-cx-diag.cc, ov-flt-cx-mat.cc, ov-flt-re-diag.cc, ov-flt-re-mat.cc, ov-lazy-idx.cc, ov-mex-fcn.cc, ov-perm.cc, ov-range.cc, ov-re-diag.cc, ov-re-mat.cc, ov-re-sparse.cc, ov-scalar.cc, ov-str-mat.cc, op-bm-b.cc, op-bm-bm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-str-m.cc, op-str-s.cc, oct-parse.in.yy, pt-cbinop.cc, pt-colon.cc, pt-decl.cc, pt-exp.cc, pt-id.cc, pt-misc.cc, pt-select.cc, pt-unop.cc: Eliminate simple uses of error_state.

author	John W. Eaton <jwe@octave.org>
date	Mon, 05 Oct 2015 19:29:36 -0400
parents	a9574e3c6e9e
children

rev	line source
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	1 /*
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	2
19731 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 18099 diff changeset	3 Copyright (C) 2002-2015 Andreas Stahel
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	4
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	5 This file is part of Octave.
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	6
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	7 Octave is free software; you can redistribute it and/or modify it
9fddcc586065 [project @ 2007-08-24 08:27:27 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: 6823 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: 6823 diff changeset	10 option) any later version.
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	11
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	12 Octave is distributed in the hope that it will be useful, but WITHOUT
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	15 for more details.
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	16
9fddcc586065 [project @ 2007-08-24 08:27:27 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: 6823 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: 6823 diff changeset	19 <http://www.gnu.org/licenses/>.
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	20
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	21 */
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	22
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6823 diff changeset	23 // Author: Andreas Stahel <Andreas.Stahel@hta-bi.bfh.ch>
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6823 diff changeset	24
9786 2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	25 #ifdef HAVE_CONFIG_H
2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	26 #include <config.h>
2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	27 #endif
2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	28
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	29 #include "lo-ieee.h"
7231 2eb392d058bb [project @ 2007-11-30 18:53:29 by jwe] jwe parents: 7017 diff changeset	30 #include "lo-math.h"
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	31
19912 12ecb7212b44 move some files without external dependencies from dldfcn to corefcn John W. Eaton <jwe@octave.org> parents: 19731 diff changeset	32 #include "defun.h"
9786 2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	33 #include "error.h"
2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	34 #include "oct-obj.h"
2c279308f6ab fix includes in some src/DLD-FUNCTIONS files John W. Eaton <jwe@octave.org> parents: 9245 diff changeset	35
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	36 inline double max (double a, double b, double c)
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	37 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	38 if (a < b)
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	39 return (b < c ? c : b);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	40 else
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	41 return (a < c ? c : a);
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	42 }
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	43
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	44 inline double min (double a, double b, double c)
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	45 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	46 if (a > b)
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	47 return (b > c ? c : b);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	48 else
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	49 return (a > c ? c : a);
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	50 }
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	51
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	52 #define REF(x,k,i) x(static_cast<octave_idx_type>(elem((k), (i))) - 1)
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	53
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	54 // for large data set the algorithm is very slow
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	55 // one should presort (how?) either the elements of the points of evaluation
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	56 // to cut down the time needed to decide which triangle contains the
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	57 // given point
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	58
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	59 // e.g., build up a neighbouring triangle structure and use a simplex-like
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	60 // method to traverse it
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	61
19912 12ecb7212b44 move some files without external dependencies from dldfcn to corefcn John W. Eaton <jwe@octave.org> parents: 19731 diff changeset	62 DEFUN (tsearch, args, ,
12ecb7212b44 move some files without external dependencies from dldfcn to corefcn John W. Eaton <jwe@octave.org> parents: 19731 diff changeset	63 "-- texinfo --\n\
12ecb7212b44 move some files without external dependencies from dldfcn to corefcn John W. Eaton <jwe@octave.org> parents: 19731 diff changeset	64 @deftypefn {Built-in Function} {@var{idx} =} tsearch (@var{x}, @var{y}, @var{t}, @var{xi}, @var{yi})\n\
20207 4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19912 diff changeset	65 Search for the enclosing Delaunay convex hull.\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19912 diff changeset	66 \n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19912 diff changeset	67 For @code{@var{t} = delaunay (@var{x}, @var{y})}, finds the index in @var{t}\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19912 diff changeset	68 containing the points @code{(@var{xi}, @var{yi})}. For points outside the\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19912 diff changeset	69 convex hull, @var{idx} is NaN.\n\
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	70 @seealso{delaunay, delaunayn}\n\
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	71 @end deftypefn")
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	72 {
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	73 const double eps=1.0e-12;
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	74
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	75 octave_value_list retval;
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	76 const int nargin = args.length ();
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	77 if (nargin != 5)
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	78 {
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	79 print_usage ();
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	80 return retval;
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	81 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	82
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	83 const ColumnVector x (args(0).vector_value ());
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	84 const ColumnVector y (args(1).vector_value ());
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	85 const Matrix elem (args(2).matrix_value ());
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	86 const ColumnVector xi (args(3).vector_value ());
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	87 const ColumnVector yi (args(4).vector_value ());
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	88
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	89 const octave_idx_type nelem = elem.rows ();
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	90
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	91 ColumnVector minx (nelem);
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	92 ColumnVector maxx (nelem);
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	93 ColumnVector miny (nelem);
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	94 ColumnVector maxy (nelem);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	95 for (octave_idx_type k = 0; k < nelem; k++)
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	96 {
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	97 minx(k) = min (REF (x, k, 0), REF (x, k, 1), REF (x, k, 2)) - eps;
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	98 maxx(k) = max (REF (x, k, 0), REF (x, k, 1), REF (x, k, 2)) + eps;
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	99 miny(k) = min (REF (y, k, 0), REF (y, k, 1), REF (y, k, 2)) - eps;
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	100 maxy(k) = max (REF (y, k, 0), REF (y, k, 1), REF (y, k, 2)) + eps;
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	101 }
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	102
20267 a9574e3c6e9e Deprecate Array::length() and Sparse::length() in favour of ::numel(). Carnë Draug <carandraug@octave.org> parents: 20207 diff changeset	103 const octave_idx_type np = xi.numel ();
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	104 ColumnVector values (np);
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	105
18099 6a71e5030df5 Follow coding convention of defining and initializing only 1 variable per line in liboctinterp. Rik <rik@octave.org> parents: 17787 diff changeset	106 double x0, y0, a11, a12, a21, a22, det;
6a71e5030df5 Follow coding convention of defining and initializing only 1 variable per line in liboctinterp. Rik <rik@octave.org> parents: 17787 diff changeset	107 x0 = y0 = 0.0;
6a71e5030df5 Follow coding convention of defining and initializing only 1 variable per line in liboctinterp. Rik <rik@octave.org> parents: 17787 diff changeset	108 a11 = a12 = a21 = a22 = 0.0;
6a71e5030df5 Follow coding convention of defining and initializing only 1 variable per line in liboctinterp. Rik <rik@octave.org> parents: 17787 diff changeset	109 det = 0.0;
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	110
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	111 octave_idx_type k = nelem; // k is a counter of elements
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	112 for (octave_idx_type kp = 0; kp < np; kp++)
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	113 {
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	114 const double xt = xi(kp);
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	115 const double yt = yi(kp);
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	116
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	117 // check if last triangle contains the next point
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	118 if (k < nelem)
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	119 {
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	120 const double dx1 = xt - x0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	121 const double dx2 = yt - y0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	122 const double c1 = (a22 * dx1 - a21 * dx2) / det;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	123 const double c2 = (-a12 * dx1 + a11 * dx2) / det;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	124 if (c1 >= -eps && c2 >= -eps && (c1 + c2) <= (1 + eps))
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	125 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	126 values(kp) = double(k+1);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	127 continue;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	128 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	129 }
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	130
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	131 // it doesn't, so go through all elements
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	132 for (k = 0; k < nelem; k++)
12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	133 {
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	134 OCTAVE_QUIT;
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	135 if (xt >= minx(k) && xt <= maxx(k) && yt >= miny(k) && yt <= maxy(k))
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	136 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	137 // element inside the minimum rectangle: examine it closely
10550 c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	138 x0 = REF (x, k, 0);
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	139 y0 = REF (y, k, 0);
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	140 a11 = REF (x, k, 1) - x0;
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	141 a12 = REF (y, k, 1) - y0;
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	142 a21 = REF (x, k, 2) - x0;
c48b7048e720 style fixes John W. Eaton <jwe@octave.org> parents: 10154 diff changeset	143 a22 = REF (y, k, 2) - y0;
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	144 det = a11 * a22 - a21 * a12;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	145
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	146 // solve the system
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	147 const double dx1 = xt - x0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	148 const double dx2 = yt - y0;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	149 const double c1 = (a22 * dx1 - a21 * dx2) / det;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	150 const double c2 = (-a12 * dx1 + a11 * dx2) / det;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	151 if ((c1 >= -eps) && (c2 >= -eps) && ((c1 + c2) <= (1 + eps)))
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	152 {
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	153 values(kp) = double(k+1);
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	154 break;
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	155 }
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	156 } //endif # examine this element closely
40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	157 } //endfor # each element
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	158
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	159 if (k == nelem)
10154 40dfc0c99116 DLD-FUNCTIONS/.cc: untabify John W. Eaton <jwe@octave.org>* parents: 9786 diff changeset	160 values(kp) = lo_ieee_nan_value ();
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	161
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	162 } //endfor # kp
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	163
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	164 retval(0) = values;
11586 12df7854fa7c strip trailing whitespace from source files John W. Eaton <jwe@octave.org> parents: 11553 diff changeset	165
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	166 return retval;
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	167 }
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	168
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	169 /*
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	170 %!shared x, y, tri
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	171 %! x = [-1;-1;1];
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	172 %! y = [-1;1;-1];
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	173 %! tri = [1, 2, 3];
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	174 %!assert (tsearch (x,y,tri,-1,-1), 1)
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	175 %!assert (tsearch (x,y,tri, 1,-1), 1)
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	176 %!assert (tsearch (x,y,tri,-1, 1), 1)
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	177 %!assert (tsearch (x,y,tri,-1/3, -1/3), 1)
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	178 %!assert (tsearch (x,y,tri, 1, 1), NaN)
9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	179
14501 60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions. Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	180 %!error tsearch ()
6823 9fddcc586065 [project @ 2007-08-24 08:27:27 by dbateman] dbateman parents: diff changeset	181 */

Mercurial > octave-nkf

annotate libinterp/corefcn/tsearch.cc @ 20587:f90c8372b7ba