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annotate libinterp/corefcn/betainc.cc @ 21200:fcac5dbbf9ed

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maint: Indent #ifdef blocks in libinterp. * builtins.h, Cell.cc, __contourc__.cc, __dispatch__.cc, __dsearchn__.cc, __ichol__.cc, __ilu__.cc, __lin_interpn__.cc, __pchip_deriv__.cc, __qp__.cc, balance.cc, besselj.cc, betainc.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h, cellfun.cc, colloc.cc, comment-list.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, debug.cc, defaults.cc, defaults.in.h, defun-dld.h, defun.cc, defun.h, det.cc, dirfns.cc, display.cc, dlmread.cc, dot.cc, dynamic-ld.cc, eig.cc, ellipj.cc, error.cc, errwarn.cc, event-queue.cc, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc, gammainc.cc, gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc, gl-render.cc, gl2ps-print.cc, graphics.cc, graphics.in.h, gripes.cc, hash.cc, help.cc, hess.cc, hex2num.cc, input.cc, inv.cc, jit-ir.cc, jit-typeinfo.cc, jit-util.cc, jit-util.h, kron.cc, load-path.cc, load-save.cc, lookup.cc, ls-ascii-helper.cc, ls-hdf5.cc, ls-mat-ascii.cc, ls-mat4.cc, ls-mat5.cc, ls-oct-binary.cc, ls-oct-text.cc, ls-oct-text.h, ls-utils.cc, ls-utils.h, lsode.cc, lu.cc, luinc.cc, mappers.cc, matrix_type.cc, max.cc, mex.h, mexproto.h, mgorth.cc, nproc.cc, oct-errno.in.cc, oct-fstrm.cc, oct-hdf5-types.cc, oct-hdf5.h, oct-hist.cc, oct-iostrm.cc, oct-lvalue.cc, oct-map.cc, oct-prcstrm.cc, oct-procbuf.cc, oct-stream.cc, oct-strstrm.cc, octave-link.cc, ordschur.cc, pager.cc, pinv.cc, pr-output.cc, procstream.cc, profiler.cc, psi.cc, pt-jit.cc, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, sighandlers.cc, sparse-xdiv.cc, sparse-xpow.cc, sparse.cc, spparms.cc, sqrtm.cc, str2double.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc, symtab.cc, syscalls.cc, sysdep.cc, sysdep.h, time.cc, toplev.cc, tril.cc, tsearch.cc, txt-eng-ft.cc, txt-eng.cc, typecast.cc, urlwrite.cc, utils.cc, variables.cc, xdiv.cc, xnorm.cc, xpow.cc, zfstream.cc, __delaunayn__.cc, __eigs__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc, __init_gnuplot__.cc, __magick_read__.cc, __osmesa_print__.cc, __voronoi__.cc, amd.cc, audiodevinfo.cc, audioread.cc, ccolamd.cc, chol.cc, colamd.cc, convhulln.cc, dmperm.cc, fftw.cc, oct-qhull.h, qr.cc, symbfact.cc, symrcm.cc, oct-conf.in.cc, ov-base-diag.cc, ov-base-int.cc, ov-base-mat.cc, ov-base-scalar.cc, ov-base-sparse.cc, ov-base.cc, ov-bool-mat.cc, ov-bool-sparse.cc, ov-bool.cc, ov-builtin.cc, ov-cell.cc, ov-ch-mat.cc, ov-class.cc, ov-classdef.cc, ov-colon.cc, ov-complex.cc, ov-cs-list.cc, ov-cx-diag.cc, ov-cx-mat.cc, ov-cx-sparse.cc, ov-dld-fcn.cc, ov-fcn-handle.cc, ov-fcn-inline.cc, ov-fcn.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-int16.cc, ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-java.cc, ov-lazy-idx.cc, ov-mex-fcn.cc, ov-null-mat.cc, ov-oncleanup.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, ov-struct.cc, ov-typeinfo.cc, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc, ov-usr-fcn.cc, ov.cc, ovl.cc, octave.cc, op-b-b.cc, op-b-bm.cc, op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc, op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc, op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc, op-dm-template.cc, op-dms-template.cc, op-double-conv.cc, op-fcdm-fcdm.cc, op-fcdm-fdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc, op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-float-conv.cc, op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc, op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc, op-i8-i8.cc, op-int-concat.cc, op-int-conv.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc, op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc, op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc, op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc, op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc, op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc, op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, pt-arg-list.cc, pt-array-list.cc, pt-assign.cc, pt-binop.cc, pt-bp.cc, pt-cbinop.cc, pt-cell.cc, pt-check.cc, pt-classdef.cc, pt-cmd.cc, pt-colon.cc, pt-colon.h, pt-const.cc, pt-decl.cc, pt-eval.cc, pt-except.cc, pt-exp.cc, pt-fcn-handle.cc, pt-funcall.cc, pt-id.cc, pt-idx.cc, pt-jump.cc, pt-loop.cc, pt-mat.cc, pt-misc.cc, pt-pr-code.cc, pt-select.cc, pt-stmt.cc, pt-unop.cc, pt.cc, token.cc, Array-jit.cc, Array-os.cc, Array-sym.cc, Array-tc.cc, version.cc: Indent #ifdef blocks in libinterp.
author Rik <rik@octave.org>
date Fri, 05 Feb 2016 16:29:08 -0800
parents e39e05d90788
children 40de9f8f23a6
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1 /*
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2
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3 Copyright (C) 1997-2015 John W. Eaton
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4
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5 This file is part of Octave.
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6
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
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23 #ifdef HAVE_CONFIG_H
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24 # include <config.h>
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25 #endif
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26
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27 #include "lo-specfun.h"
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28
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29 #include "defun.h"
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30 #include "error.h"
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31 #include "errwarn.h"
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32 #include "ovl.h"
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33 #include "utils.h"
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34
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35
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36 DEFUN (betainc, args, ,
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37 "-*- texinfo -*-\n\
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38 @deftypefn {} {} betainc (@var{x}, @var{a}, @var{b})\n\
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39 Compute the regularized incomplete Beta function.\n\
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40 \n\
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41 The regularized incomplete Beta function is defined by\n\
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42 @tex\n\
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43 $$\n\
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44 I (x, a, b) = {1 \\over {B (a, b)}} \\int_0^x t^{(a-z)} (1-t)^{(b-1)} dt.\n\
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45 $$\n\
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46 @end tex\n\
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47 @ifnottex\n\
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48 @c Set example in small font to prevent overfull line\n\
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49 \n\
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50 @smallexample\n\
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51 @group\n\
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52 x\n\
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53 1 /\n\
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54 betainc (x, a, b) = ----------- | t^(a-1) (1-t)^(b-1) dt.\n\
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55 beta (a, b) /\n\
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56 t=0\n\
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57 @end group\n\
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58 @end smallexample\n\
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59 \n\
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60 @end ifnottex\n\
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61 \n\
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62 If @var{x} has more than one component, both @var{a} and @var{b} must be\n\
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63 scalars. If @var{x} is a scalar, @var{a} and @var{b} must be of\n\
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64 compatible dimensions.\n\
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65 @seealso{betaincinv, beta, betaln}\n\
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66 @end deftypefn")
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67 {
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68 if (args.length () != 3)
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69 print_usage ();
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70
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71 octave_value retval;
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72
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73 octave_value x_arg = args(0);
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74 octave_value a_arg = args(1);
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75 octave_value b_arg = args(2);
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76
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77 // FIXME: Can we make a template version of the duplicated code below
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78 if (x_arg.is_single_type () || a_arg.is_single_type ()
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79 || b_arg.is_single_type ())
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80 {
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81 if (x_arg.is_scalar_type ())
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82 {
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83 float x = x_arg.float_value ();
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84
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85 if (a_arg.is_scalar_type ())
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86 {
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87 float a = a_arg.float_value ();
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88
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89 if (b_arg.is_scalar_type ())
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90 {
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91 float b = b_arg.float_value ();
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92
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93 retval = betainc (x, a, b);
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94 }
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95 else
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96 {
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97 Array<float> b = b_arg.float_array_value ();
3254
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jwe
parents:
diff changeset
98
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
99 retval = betainc (x, a, b);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
100 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
101 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
102 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
103 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
104 Array<float> a = a_arg.float_array_value ();
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
105
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
106 if (b_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
107 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
108 float b = b_arg.float_value ();
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
109
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
110 retval = betainc (x, a, b);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
111 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
112 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
113 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
114 Array<float> b = b_arg.float_array_value ();
3254
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jwe
parents:
diff changeset
115
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
116 retval = betainc (x, a, b);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
117 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
118 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
119 }
3254
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
120 else
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
121 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
122 Array<float> x = x_arg.float_array_value ();
3254
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
123
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
124 if (a_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
125 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
126 float a = a_arg.float_value ();
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
127
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
128 if (b_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
129 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
130 float b = b_arg.float_value ();
3254
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
131
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
132 retval = betainc (x, a, b);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
133 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
134 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
135 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
136 Array<float> b = b_arg.float_array_value ();
3254
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
137
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
138 retval = betainc (x, a, b);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
139 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
140 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
141 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
142 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
143 Array<float> a = a_arg.float_array_value ();
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
144
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
145 if (b_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
146 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
147 float b = b_arg.float_value ();
7789
82be108cc558 First attempt at single precision tyeps
David Bateman <dbateman@free.fr>
parents: 7017
diff changeset
148
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
149 retval = betainc (x, a, b);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
150 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
151 else
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
152 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
153 Array<float> b = b_arg.float_array_value ();
3254
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
154
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
155 retval = betainc (x, a, b);
10154
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
156 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
157 }
40dfc0c99116 DLD-FUNCTIONS/*.cc: untabify
John W. Eaton <jwe@octave.org>
parents: 9758
diff changeset
158 }
3254
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
159 }
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
160 else
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
161 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
162 if (x_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
163 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
164 double x = x_arg.double_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
165
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
166 if (a_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
167 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
168 double a = a_arg.double_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
169
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
170 if (b_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
171 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
172 double b = b_arg.double_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
173
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
174 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
175 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
176 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
177 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
178 Array<double> b = b_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
179
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
180 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
181 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
182 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
183 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
184 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
185 Array<double> a = a_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
186
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
187 if (b_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
188 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
189 double b = b_arg.double_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
190
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
191 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
192 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
193 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
194 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
195 Array<double> b = b_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
196
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
197 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
198 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
199 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
200 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
201 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
202 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
203 Array<double> x = x_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
204
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
205 if (a_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
206 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
207 double a = a_arg.double_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
208
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
209 if (b_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
210 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
211 double b = b_arg.double_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
212
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
213 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
214 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
215 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
216 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
217 Array<double> b = b_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
218
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
219 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
220 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
221 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
222 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
223 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
224 Array<double> a = a_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
225
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
226 if (b_arg.is_scalar_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
227 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
228 double b = b_arg.double_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
229
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
230 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
231 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
232 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
233 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
234 Array<double> b = b_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
235
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
236 retval = betainc (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
237 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
238 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
239 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
240 }
3254
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
241
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
242 return retval;
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
243 }
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
244
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
245 /*
14815
95b93a728603 Use Array superclass, rather than Matrix or NDArray, for betainc function.
Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
246 ## Double precision
7815
a41df65f3f00 Add some single precision test code and fix resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
247 %!test
14501
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14437
diff changeset
248 %! a = [1, 1.5, 2, 3];
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249 %! b = [4, 3, 2, 1];
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250 %! v1 = betainc (1,a,b);
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251 %! v2 = [1,1,1,1];
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252 %! x = [.2, .4, .6, .8];
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253 %! v3 = betainc (x, a, b);
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254 %! v4 = 1 - betainc (1.-x, b, a);
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255 %! assert (v1, v2, sqrt (eps));
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256 %! assert (v3, v4, sqrt (eps));
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257
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258 ## Single precision
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259 %!test
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260 %! a = single ([1, 1.5, 2, 3]);
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261 %! b = single ([4, 3, 2, 1]);
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262 %! v1 = betainc (1,a,b);
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263 %! v2 = single ([1,1,1,1]);
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264 %! x = single ([.2, .4, .6, .8]);
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265 %! v3 = betainc (x, a, b);
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266 %! v4 = 1 - betainc (1.-x, b, a);
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267 %! assert (v1, v2, sqrt (eps ("single")));
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268 %! assert (v3, v4, sqrt (eps ("single")));
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269
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270 ## Mixed double/single precision
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271 %!test
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272 %! a = single ([1, 1.5, 2, 3]);
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273 %! b = [4, 3, 2, 1];
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274 %! v1 = betainc (1,a,b);
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275 %! v2 = single ([1,1,1,1]);
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276 %! x = [.2, .4, .6, .8];
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277 %! v3 = betainc (x, a, b);
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278 %! v4 = 1-betainc (1.-x, b, a);
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279 %! assert (v1, v2, sqrt (eps ("single")));
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280 %! assert (v3, v4, sqrt (eps ("single")));
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281
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282 %!error betainc ()
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283 %!error betainc (1)
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284 %!error betainc (1,2)
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285 %!error betainc (1,2,3,4)
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286 */
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287
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288 DEFUN (betaincinv, args, ,
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289 "-*- texinfo -*-\n\
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290 @deftypefn {} {} betaincinv (@var{y}, @var{a}, @var{b})\n\
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291 Compute the inverse of the incomplete Beta function.\n\
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292 \n\
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293 The inverse is the value @var{x} such that\n\
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294 \n\
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295 @example\n\
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296 @var{y} == betainc (@var{x}, @var{a}, @var{b})\n\
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297 @end example\n\
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298 @seealso{betainc, beta, betaln}\n\
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299 @end deftypefn")
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300 {
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301 if (args.length () != 3)
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302 print_usage ();
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303
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304 octave_value retval;
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305
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306 octave_value x_arg = args(0);
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307 octave_value a_arg = args(1);
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308 octave_value b_arg = args(2);
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309
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310 if (x_arg.is_scalar_type ())
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311 {
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312 double x = x_arg.double_value ();
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313
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314 if (a_arg.is_scalar_type ())
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315 {
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316 double a = a_arg.double_value ();
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317
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318 if (b_arg.is_scalar_type ())
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319 {
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320 double b = b_arg.double_value ();
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321
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322 retval = betaincinv (x, a, b);
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323 }
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324 else
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325 {
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326 Array<double> b = b_arg.array_value ();
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327
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328 retval = betaincinv (x, a, b);
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329 }
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330 }
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Rik <octave@nomad.inbox5.com>
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331 else
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332 {
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333 Array<double> a = a_arg.array_value ();
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334
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335 if (b_arg.is_scalar_type ())
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336 {
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diff changeset
337 double b = b_arg.double_value ();
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338
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339 retval = betaincinv (x, a, b);
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340 }
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341 else
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Rik <octave@nomad.inbox5.com>
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342 {
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343 Array<double> b = b_arg.array_value ();
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344
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345 retval = betaincinv (x, a, b);
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346 }
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347 }
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diff changeset
348 }
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349 else
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350 {
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351 Array<double> x = x_arg.array_value ();
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352
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353 if (a_arg.is_scalar_type ())
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354 {
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355 double a = a_arg.double_value ();
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356
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357 if (b_arg.is_scalar_type ())
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358 {
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diff changeset
359 double b = b_arg.double_value ();
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360
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361 retval = betaincinv (x, a, b);
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362 }
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363 else
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Rik <octave@nomad.inbox5.com>
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364 {
20802
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365 Array<double> b = b_arg.array_value ();
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366
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367 retval = betaincinv (x, a, b);
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368 }
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369 }
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370 else
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371 {
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diff changeset
372 Array<double> a = a_arg.array_value ();
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373
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374 if (b_arg.is_scalar_type ())
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diff changeset
375 {
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diff changeset
376 double b = b_arg.double_value ();
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diff changeset
377
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378 retval = betaincinv (x, a, b);
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379 }
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380 else
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diff changeset
381 {
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diff changeset
382 Array<double> b = b_arg.array_value ();
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383
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384 retval = betaincinv (x, a, b);
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385 }
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386 }
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387 }
20802
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388
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389 // FIXME: It would be better to have an algorithm for betaincinv which
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390 // accepted float inputs and returned float outputs. As it is, we do
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391 // extra work to calculate betaincinv to double precision and then throw
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392 // that precision away.
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393 if (x_arg.is_single_type () || a_arg.is_single_type ()
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394 || b_arg.is_single_type ())
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395 {
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396 retval = Array<float> (retval.array_value ());
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397 }
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398
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399 return retval;
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400 }
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401
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402 /*
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403 %!assert (betaincinv ([0.875 0.6875], [1 2], 3), [0.5 0.5], sqrt (eps))
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404 %!assert (betaincinv (0.5, 3, 3), 0.5, sqrt (eps))
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405 %!assert (betaincinv (0.34375, 4, 3), 0.5, sqrt (eps))
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406 %!assert (betaincinv (0.2265625, 5, 3), 0.5, sqrt (eps))
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407 %!assert (betaincinv (0.14453125, 6, 3), 0.5, sqrt (eps))
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408 %!assert (betaincinv (0.08984375, 7, 3), 0.5, sqrt (eps))
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409 %!assert (betaincinv (0.0546875, 8, 3), 0.5, sqrt (eps))
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410 %!assert (betaincinv (0.03271484375, 9, 3), 0.5, sqrt (eps))
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411 %!assert (betaincinv (0.019287109375, 10, 3), 0.5, sqrt (eps))
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412
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413 ## Test class single as well
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414 %!assert (betaincinv ([0.875 0.6875], [1 2], single (3)), [0.5 0.5], sqrt (eps ("single")))
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415 %!assert (betaincinv (0.5, 3, single (3)), 0.5, sqrt (eps ("single")))
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416 %!assert (betaincinv (0.34375, 4, single (3)), 0.5, sqrt (eps ("single")))
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417
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418 ## Extreme values
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419 %!assert (betaincinv (0, 42, 42), 0, sqrt (eps))
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420 %!assert (betaincinv (1, 42, 42), 1, sqrt (eps))
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421
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422 %!error betaincinv ()
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423 %!error betaincinv (1, 2)
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424 */
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425