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annotate libinterp/corefcn/betainc.cc @ 20819:f428cbe7576f

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eliminate unnecessary uses of nargin * __dsearchn__.cc, betainc.cc, bsxfun.cc, data.cc, debug.cc, det.cc, dot.cc, error.cc, file-io.cc, givens.cc, graphics.cc, hess.cc, hex2num.cc, input.cc, inv.cc, mgorth.cc, ordschur.cc, pr-output.cc, profiler.cc, rcond.cc, regexp.cc, sqrtm.cc, sub2ind.cc, sylvester.cc, syscalls.cc, sysdep.cc, tsearch.cc, urlwrite.cc, utils.cc, variables.cc: Don't use nargin variable unless it is used more than once.
author John W. Eaton <jwe@octave.org>
date Mon, 07 Dec 2015 13:54:01 -0500
parents 8bb38ba1bad6
children 1142cf6abc0d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
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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
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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 "gripes.h"
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32 #include "oct-obj.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 {Mapping Function} {} 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 octave_value retval;
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69
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70 if (args.length () != 3)
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71 print_usage ();
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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 ();
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98
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99 retval = betainc (x, a, b);
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100 }
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101 }
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102 else
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103 {
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104 Array<float> a = a_arg.float_array_value ();
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105
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106 if (b_arg.is_scalar_type ())
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107 {
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108 float b = b_arg.float_value ();
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109
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110 retval = betainc (x, a, b);
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111 }
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112 else
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113 {
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114 Array<float> b = b_arg.float_array_value ();
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115
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116 retval = betainc (x, a, b);
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117 }
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118 }
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119 }
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120 else
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121 {
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122 Array<float> x = x_arg.float_array_value ();
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123
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124 if (a_arg.is_scalar_type ())
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125 {
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126 float a = a_arg.float_value ();
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127
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128 if (b_arg.is_scalar_type ())
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129 {
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130 float b = b_arg.float_value ();
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131
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132 retval = betainc (x, a, b);
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133 }
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134 else
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135 {
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136 Array<float> b = b_arg.float_array_value ();
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137
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138 retval = betainc (x, a, b);
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139 }
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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
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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
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parents: 20561
diff changeset
145 if (b_arg.is_scalar_type ())
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parents: 20561
diff changeset
146 {
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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
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diff changeset
149 retval = betainc (x, a, b);
10154
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parents: 9758
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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
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153 Array<float> b = b_arg.float_array_value ();
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diff changeset
154
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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:
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159 }
28d5f556b8cf [project @ 1999-07-15 16:02:57 by jwe]
jwe
parents:
diff changeset
160 else
20802
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parents: 20561
diff changeset
161 {
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parents: 20561
diff changeset
162 if (x_arg.is_scalar_type ())
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parents: 20561
diff changeset
163 {
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parents: 20561
diff changeset
164 double x = x_arg.double_value ();
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165
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
166 if (a_arg.is_scalar_type ())
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parents: 20561
diff changeset
167 {
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diff changeset
168 double a = a_arg.double_value ();
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parents: 20561
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169
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
170 if (b_arg.is_scalar_type ())
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parents: 20561
diff changeset
171 {
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diff changeset
172 double b = b_arg.double_value ();
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173
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diff changeset
174 retval = betainc (x, a, b);
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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 {
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diff changeset
178 Array<double> b = b_arg.array_value ();
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diff changeset
179
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diff changeset
180 retval = betainc (x, a, b);
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parents: 20561
diff changeset
181 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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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
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parents: 20561
diff changeset
184 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
185 Array<double> a = a_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
186
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
187 if (b_arg.is_scalar_type ())
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John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
188 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
189 double b = b_arg.double_value ();
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diff changeset
190
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
191 retval = betainc (x, a, b);
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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
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parents: 20561
diff changeset
194 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
195 Array<double> b = b_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
196
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
197 retval = betainc (x, a, b);
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parents: 20561
diff changeset
198 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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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
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parents: 20561
diff changeset
204
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
205 if (a_arg.is_scalar_type ())
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John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
206 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
207 double a = a_arg.double_value ();
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parents: 20561
diff changeset
208
8bb38ba1bad6 eliminate return statements after calls to print_usage
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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
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parents: 20561
diff changeset
211 double b = b_arg.double_value ();
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diff changeset
212
8bb38ba1bad6 eliminate return statements after calls to print_usage
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diff changeset
213 retval = betainc (x, a, b);
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parents: 20561
diff changeset
214 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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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
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parents: 20561
diff changeset
217 Array<double> b = b_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
218
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
219 retval = betainc (x, a, b);
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parents: 20561
diff changeset
220 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
221 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
222 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
223 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
224 Array<double> a = a_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
225
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
226 if (b_arg.is_scalar_type ())
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parents: 20561
diff changeset
227 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
228 double b = b_arg.double_value ();
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diff changeset
229
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
230 retval = betainc (x, a, b);
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parents: 20561
diff changeset
231 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
232 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
233 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
234 Array<double> b = b_arg.array_value ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
235
8bb38ba1bad6 eliminate return statements after calls to print_usage
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diff changeset
236 retval = betainc (x, a, b);
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parents: 20561
diff changeset
237 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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parents: 20561
diff changeset
238 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
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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
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Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
246 ## Double precision
7815
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David Bateman <dbateman@free.fr>
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diff changeset
247 %!test
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diff changeset
248 %! a = [1, 1.5, 2, 3];
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diff changeset
249 %! b = [4, 3, 2, 1];
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diff changeset
250 %! v1 = betainc (1,a,b);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
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251 %! v2 = [1,1,1,1];
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252 %! x = [.2, .4, .6, .8];
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diff changeset
253 %! v3 = betainc (x, a, b);
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diff changeset
254 %! v4 = 1 - betainc (1.-x, b, a);
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diff changeset
255 %! assert (v1, v2, sqrt (eps));
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
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parents: 14437
diff changeset
256 %! assert (v3, v4, sqrt (eps));
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David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
257
14815
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Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
258 ## Single precision
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David Bateman <dbateman@free.fr>
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diff changeset
259 %!test
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diff changeset
260 %! a = single ([1, 1.5, 2, 3]);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14437
diff changeset
261 %! b = single ([4, 3, 2, 1]);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
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parents: 14437
diff changeset
262 %! v1 = betainc (1,a,b);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
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parents: 14437
diff changeset
263 %! v2 = single ([1,1,1,1]);
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David Bateman <dbateman@free.fr>
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diff changeset
264 %! x = single ([.2, .4, .6, .8]);
14501
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Rik <octave@nomad.inbox5.com>
parents: 14437
diff changeset
265 %! v3 = betainc (x, a, b);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
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parents: 14437
diff changeset
266 %! v4 = 1 - betainc (1.-x, b, a);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
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diff changeset
267 %! assert (v1, v2, sqrt (eps ("single")));
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
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parents: 14437
diff changeset
268 %! assert (v3, v4, sqrt (eps ("single")));
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David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
269
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Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
270 ## Mixed double/single precision
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David Bateman <dbateman@free.fr>
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diff changeset
271 %!test
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Rik <octave@nomad.inbox5.com>
parents: 14437
diff changeset
272 %! a = single ([1, 1.5, 2, 3]);
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parents: 14437
diff changeset
273 %! b = [4, 3, 2, 1];
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Rik <octave@nomad.inbox5.com>
parents: 14437
diff changeset
274 %! v1 = betainc (1,a,b);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14437
diff changeset
275 %! v2 = single ([1,1,1,1]);
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diff changeset
276 %! x = [.2, .4, .6, .8];
14501
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diff changeset
277 %! v3 = betainc (x, a, b);
60e5cf354d80 Update %!tests in DLD-FUNCTIONS/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14437
diff changeset
278 %! v4 = 1-betainc (1.-x, b, a);
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parents: 14501
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279 %! assert (v1, v2, sqrt (eps ("single")));
95b93a728603 Use Array superclass, rather than Matrix or NDArray, for betainc function.
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parents: 14501
diff changeset
280 %! assert (v3, v4, sqrt (eps ("single")));
7815
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David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
281
14815
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Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
282 %!error betainc ()
95b93a728603 Use Array superclass, rather than Matrix or NDArray, for betainc function.
Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
283 %!error betainc (1)
95b93a728603 Use Array superclass, rather than Matrix or NDArray, for betainc function.
Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
284 %!error betainc (1,2)
95b93a728603 Use Array superclass, rather than Matrix or NDArray, for betainc function.
Rik <octave@nomad.inbox5.com>
parents: 14501
diff changeset
285 %!error betainc (1,2,3,4)
7815
a41df65f3f00 Add some single precision test code and fix resulting bugs
David Bateman <dbateman@free.fr>
parents: 7789
diff changeset
286 */
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
287
15039
e753177cde93 maint: Move non-dynamically linked functions from DLD-FUNCTIONS/ to corefcn/ directory
Rik <rik@octave.org>
parents: 14850
diff changeset
288 DEFUN (betaincinv, args, ,
17787
175b392e91fe Use GNU style coding conventions for code in libinterp/
Rik <rik@octave.org>
parents: 17744
diff changeset
289 "-*- texinfo -*-\n\
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
290 @deftypefn {Mapping Function} {} betaincinv (@var{y}, @var{a}, @var{b})\n\
20172
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19864
diff changeset
291 Compute the inverse of the incomplete Beta function.\n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19864
diff changeset
292 \n\
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19864
diff changeset
293 The inverse is the value @var{x} such that\n\
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
294 \n\
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
295 @example\n\
20172
4f45eaf83908 doc: Update more docstrings to have one sentence summary as first line.
Rik <rik@octave.org>
parents: 19864
diff changeset
296 @var{y} == betainc (@var{x}, @var{a}, @var{b})\n\
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
297 @end example\n\
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
298 @seealso{betainc, beta, betaln}\n\
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
299 @end deftypefn")
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
300 {
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
301 octave_value retval;
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
302
20819
f428cbe7576f eliminate unnecessary uses of nargin
John W. Eaton <jwe@octave.org>
parents: 20802
diff changeset
303 if (args.length () != 3)
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
304 print_usage ();
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
305
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
306 octave_value x_arg = args(0);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
307 octave_value a_arg = args(1);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
308 octave_value b_arg = args(2);
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
309
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
310 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
311 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
312 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
313
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
314 if (a_arg.is_scalar_type ())
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
315 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
316 double a = a_arg.double_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
317
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
318 if (b_arg.is_scalar_type ())
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
319 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
320 double b = b_arg.double_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
321
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
322 retval = betaincinv (x, a, b);
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
323 }
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
324 else
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
325 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
326 Array<double> b = b_arg.array_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
327
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
328 retval = betaincinv (x, a, b);
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
329 }
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
330 }
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
331 else
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
332 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
333 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
334
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
335 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
336 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
337 double b = b_arg.double_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
338
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
339 retval = betaincinv (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
340 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
341 else
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
342 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
343 Array<double> b = b_arg.array_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
344
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
345 retval = betaincinv (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
346 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
347 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
348 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
349 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
350 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
351 Array<double> x = x_arg.array_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
352
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
353 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
354 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
355 double a = a_arg.double_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
356
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
357 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
358 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
359 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
360
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
361 retval = betaincinv (x, a, b);
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
362 }
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
363 else
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
364 {
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
365 Array<double> b = b_arg.array_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
366
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
367 retval = betaincinv (x, a, b);
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
368 }
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
369 }
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
370 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
371 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
372 Array<double> a = a_arg.array_value ();
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
373
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
374 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
375 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
376 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
377
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
378 retval = betaincinv (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
379 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
380 else
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
381 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
382 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
383
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
384 retval = betaincinv (x, a, b);
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
385 }
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
386 }
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
387 }
20802
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
388
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
389 // FIXME: It would be better to have an algorithm for betaincinv which
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
390 // accepted float inputs and returned float outputs. As it is, we do
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
391 // extra work to calculate betaincinv to double precision and then throw
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
392 // that precision away.
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
393 if (x_arg.is_single_type () || a_arg.is_single_type ()
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
394 || b_arg.is_single_type ())
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
395 {
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
396 retval = Array<float> (retval.array_value ());
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
397 }
8bb38ba1bad6 eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20561
diff changeset
398
14817
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
399
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
400 return retval;
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
401 }
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
402
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
403 /*
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
404 %!assert (betaincinv ([0.875 0.6875], [1 2], 3), [0.5 0.5], sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
405 %!assert (betaincinv (0.5, 3, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
406 %!assert (betaincinv (0.34375, 4, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
407 %!assert (betaincinv (0.2265625, 5, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
408 %!assert (betaincinv (0.14453125, 6, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
409 %!assert (betaincinv (0.08984375, 7, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
410 %!assert (betaincinv (0.0546875, 8, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
411 %!assert (betaincinv (0.03271484375, 9, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
412 %!assert (betaincinv (0.019287109375, 10, 3), 0.5, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
413
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
414 ## Test class single as well
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
415 %!assert (betaincinv ([0.875 0.6875], [1 2], single (3)), [0.5 0.5], sqrt (eps ("single")))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
416 %!assert (betaincinv (0.5, 3, single (3)), 0.5, sqrt (eps ("single")))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
417 %!assert (betaincinv (0.34375, 4, single (3)), 0.5, sqrt (eps ("single")))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
418
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
419 ## Extreme values
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
420 %!assert (betaincinv (0, 42, 42), 0, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
421 %!assert (betaincinv (1, 42, 42), 1, sqrt (eps))
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
422
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
423 %!error betaincinv ()
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
424 %!error betaincinv (1, 2)
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
425 */
67897baaa05f Adapt implementation of betaincinv to Octave.
Rik <octave@nomad.inbox5.com>
parents: 14815
diff changeset
426