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annotate src/bitfcns.cc @ 14026:3781981be535 ss-3-5-90

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snapshot 3.5.90 * configure.ac (AC_INIT): Version is now 3.5.90. (OCTAVE_API_VERSION_NUMBER): Now 46. (OCTAVE_RELEASE_DATE): Now 2011-12-11.
author John W. Eaton <jwe@octave.org>
date Sun, 11 Dec 2011 23:18:31 -0500
parents 6da23a2d7afc
children 72c96de7a403
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1 /*
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2
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fd0a3ac60b0e update copyright notices
John W. Eaton <jwe@octave.org>
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3 Copyright (C) 2004-2011 John W. Eaton
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4
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
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5 This file is part of Octave.
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6
66af4b9f451e [project @ 2004-06-29 19:20:00 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
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
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10 option) any later version.
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11
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
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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
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
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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
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
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21 */
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22
66af4b9f451e [project @ 2004-06-29 19:20:00 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
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
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27 #include "str-vec.h"
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28 #include "quit.h"
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29
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30 #include "defun.h"
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31 #include "error.h"
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32 #include "ov.h"
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33 #include "ov-uint64.h"
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34 #include "ov-uint32.h"
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35 #include "ov-uint16.h"
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36 #include "ov-uint8.h"
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37 #include "ov-int64.h"
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38 #include "ov-int32.h"
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39 #include "ov-int16.h"
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40 #include "ov-int8.h"
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41 #include "ov-scalar.h"
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42 #include "ov-re-mat.h"
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43 #include "ov-bool.h"
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44
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45 // FIXME -- could probably eliminate some code duplication by
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46 // clever use of templates.
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47
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48 #define BITOPX(OP, FNAME, RET) \
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49 { \
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50 int nelx = x.numel (); \
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51 int nely = y.numel (); \
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52 \
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53 bool is_scalar_op = (nelx == 1 || nely == 1); \
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54 \
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55 dim_vector dvx = x.dims (); \
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56 dim_vector dvy = y.dims (); \
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57 \
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58 bool is_array_op = (dvx == dvy); \
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59 \
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60 if (is_array_op || is_scalar_op) \
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61 { \
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62 RET result; \
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63 \
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64 if (nelx != 1) \
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65 result.resize (dvx); \
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66 else \
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67 result.resize (dvy); \
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68 \
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69 for (int i = 0; i < nelx; i++) \
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70 if (is_scalar_op) \
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71 for (int k = 0; k < nely; k++) \
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72 result(i+k) = x(i) OP y(k); \
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73 else \
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74 result(i) = x(i) OP y(i); \
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75 \
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76 retval = result; \
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77 } \
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78 else \
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79 error ("%s: size of X and Y must match, or one operand must be a scalar", FNAME); \
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80 }
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81
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82 #define BITOP(OP, FNAME) \
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83 \
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84 octave_value retval; \
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85 \
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86 int nargin = args.length (); \
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87 \
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88 if (nargin == 2) \
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89 { \
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90 if ((args(0).class_name () == octave_scalar::static_class_name ()) \
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91 || (args(0).class_name () == octave_bool::static_class_name ()) \
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92 || (args(1).class_name () == octave_scalar::static_class_name ()) \
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93 || (args(1).class_name () == octave_bool::static_class_name ())) \
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94 { \
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95 bool arg0_is_int = (args(0).class_name () != \
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96 octave_scalar::static_class_name () && \
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97 args(0).class_name () != \
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98 octave_bool::static_class_name ()); \
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99 bool arg1_is_int = (args(1).class_name () != \
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100 octave_scalar::static_class_name () && \
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101 args(1).class_name () != \
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102 octave_bool::static_class_name ()); \
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103 \
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104 if (! (arg0_is_int || arg1_is_int)) \
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105 { \
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106 uint64NDArray x (args(0).array_value ()); \
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107 uint64NDArray y (args(1).array_value ()); \
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108 if (! error_state) \
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109 BITOPX (OP, FNAME, uint64NDArray); \
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110 retval = retval.array_value (); \
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111 } \
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112 else \
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113 { \
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114 int p = (arg0_is_int ? 1 : 0); \
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115 int q = (arg0_is_int ? 0 : 1); \
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116 \
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117 NDArray dx = args(p).array_value (); \
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118 \
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119 if (args(q).type_id () == octave_uint64_matrix::static_type_id () \
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120 || args(q).type_id () == octave_uint64_scalar::static_type_id ()) \
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121 { \
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122 uint64NDArray x (dx); \
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123 uint64NDArray y = args(q).uint64_array_value (); \
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124 if (! error_state) \
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125 BITOPX (OP, FNAME, uint64NDArray); \
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126 } \
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127 else if (args(q).type_id () == octave_uint32_matrix::static_type_id () \
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128 || args(q).type_id () == octave_uint32_scalar::static_type_id ()) \
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129 { \
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130 uint32NDArray x (dx); \
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131 uint32NDArray y = args(q).uint32_array_value (); \
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132 if (! error_state) \
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133 BITOPX (OP, FNAME, uint32NDArray); \
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134 } \
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135 else if (args(q).type_id () == octave_uint16_matrix::static_type_id () \
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136 || args(q).type_id () == octave_uint16_scalar::static_type_id ()) \
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137 { \
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138 uint16NDArray x (dx); \
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139 uint16NDArray y = args(q).uint16_array_value (); \
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140 if (! error_state) \
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141 BITOPX (OP, FNAME, uint16NDArray); \
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142 } \
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143 else if (args(q).type_id () == octave_uint8_matrix::static_type_id () \
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diff changeset
144 || args(q).type_id () == octave_uint8_scalar::static_type_id ()) \
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parents: 10160
diff changeset
145 { \
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diff changeset
146 uint8NDArray x (dx); \
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diff changeset
147 uint8NDArray y = args(q).uint8_array_value (); \
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diff changeset
148 if (! error_state) \
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diff changeset
149 BITOPX (OP, FNAME, uint8NDArray); \
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parents: 10160
diff changeset
150 } \
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parents: 10160
diff changeset
151 else if (args(q).type_id () == octave_int64_matrix::static_type_id () \
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diff changeset
152 || args(q).type_id () == octave_int64_scalar::static_type_id ()) \
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parents: 10160
diff changeset
153 { \
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diff changeset
154 int64NDArray x (dx); \
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diff changeset
155 int64NDArray y = args(q).int64_array_value (); \
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parents: 10160
diff changeset
156 if (! error_state) \
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parents: 10160
diff changeset
157 BITOPX (OP, FNAME, int64NDArray); \
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parents: 10160
diff changeset
158 } \
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parents: 10160
diff changeset
159 else if (args(q).type_id () == octave_int32_matrix::static_type_id () \
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parents: 10160
diff changeset
160 || args(q).type_id () == octave_int32_scalar::static_type_id ()) \
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parents: 10160
diff changeset
161 { \
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parents: 10160
diff changeset
162 int32NDArray x (dx); \
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parents: 10160
diff changeset
163 int32NDArray y = args(q).int32_array_value (); \
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parents: 10160
diff changeset
164 if (! error_state) \
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parents: 10160
diff changeset
165 BITOPX (OP, FNAME, int32NDArray); \
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parents: 10160
diff changeset
166 } \
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parents: 10160
diff changeset
167 else if (args(q).type_id () == octave_int16_matrix::static_type_id () \
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parents: 10160
diff changeset
168 || args(q).type_id () == octave_int16_scalar::static_type_id ()) \
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parents: 10160
diff changeset
169 { \
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parents: 10160
diff changeset
170 int16NDArray x (dx); \
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diff changeset
171 int16NDArray y = args(q).int16_array_value (); \
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diff changeset
172 if (! error_state) \
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parents: 10160
diff changeset
173 BITOPX (OP, FNAME, int16NDArray); \
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parents: 10160
diff changeset
174 } \
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parents: 10160
diff changeset
175 else if (args(q).type_id () == octave_int8_matrix::static_type_id () \
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parents: 10160
diff changeset
176 || args(q).type_id () == octave_int8_scalar::static_type_id ()) \
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parents: 10160
diff changeset
177 { \
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diff changeset
178 int8NDArray x (dx); \
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diff changeset
179 int8NDArray y = args(q).int8_array_value (); \
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diff changeset
180 if (! error_state) \
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parents: 10160
diff changeset
181 BITOPX (OP, FNAME, int8NDArray); \
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parents: 10160
diff changeset
182 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
183 else \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
184 error ("%s: invalid operand type", FNAME); \
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John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
185 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
186 } \
4952
bfd57b466752 [project @ 2004-09-01 00:49:05 by jwe]
jwe
parents: 4920
diff changeset
187 else if (args(0).class_name () == args(1).class_name ()) \
10315
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parents: 10160
diff changeset
188 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
189 if (args(0).type_id () == octave_uint64_matrix::static_type_id () \
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parents: 10160
diff changeset
190 || args(0).type_id () == octave_uint64_scalar::static_type_id ()) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
191 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
192 uint64NDArray x = args(0).uint64_array_value (); \
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parents: 10160
diff changeset
193 uint64NDArray y = args(1).uint64_array_value (); \
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parents: 10160
diff changeset
194 if (! error_state) \
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parents: 10160
diff changeset
195 BITOPX (OP, FNAME, uint64NDArray); \
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parents: 10160
diff changeset
196 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
197 else if (args(0).type_id () == octave_uint32_matrix::static_type_id () \
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parents: 10160
diff changeset
198 || args(0).type_id () == octave_uint32_scalar::static_type_id ()) \
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parents: 10160
diff changeset
199 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
200 uint32NDArray x = args(0).uint32_array_value (); \
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parents: 10160
diff changeset
201 uint32NDArray y = args(1).uint32_array_value (); \
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parents: 10160
diff changeset
202 if (! error_state) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
203 BITOPX (OP, FNAME, uint32NDArray); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
204 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
205 else if (args(0).type_id () == octave_uint16_matrix::static_type_id () \
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parents: 10160
diff changeset
206 || args(0).type_id () == octave_uint16_scalar::static_type_id ()) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
207 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
208 uint16NDArray x = args(0).uint16_array_value (); \
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parents: 10160
diff changeset
209 uint16NDArray y = args(1).uint16_array_value (); \
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parents: 10160
diff changeset
210 if (! error_state) \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
211 BITOPX (OP, FNAME, uint16NDArray); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
212 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
213 else if (args(0).type_id () == octave_uint8_matrix::static_type_id () \
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John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
214 || args(0).type_id () == octave_uint8_scalar::static_type_id ()) \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
215 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
216 uint8NDArray x = args(0).uint8_array_value (); \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
217 uint8NDArray y = args(1).uint8_array_value (); \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
218 if (! error_state) \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
219 BITOPX (OP, FNAME, uint8NDArray); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
220 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
221 else if (args(0).type_id () == octave_int64_matrix::static_type_id () \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
222 || args(0).type_id () == octave_int64_scalar::static_type_id ()) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
223 { \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
224 int64NDArray x = args(0).int64_array_value (); \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
225 int64NDArray y = args(1).int64_array_value (); \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
226 if (! error_state) \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
227 BITOPX (OP, FNAME, int64NDArray); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
228 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
229 else if (args(0).type_id () == octave_int32_matrix::static_type_id () \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
230 || args(0).type_id () == octave_int32_scalar::static_type_id ()) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
231 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
232 int32NDArray x = args(0).int32_array_value (); \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
233 int32NDArray y = args(1).int32_array_value (); \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
234 if (! error_state) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
235 BITOPX (OP, FNAME, int32NDArray); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
236 } \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
237 else if (args(0).type_id () == octave_int16_matrix::static_type_id () \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
238 || args(0).type_id () == octave_int16_scalar::static_type_id ()) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
239 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
240 int16NDArray x = args(0).int16_array_value (); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
241 int16NDArray y = args(1).int16_array_value (); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
242 if (! error_state) \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
243 BITOPX (OP, FNAME, int16NDArray); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
244 } \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
245 else if (args(0).type_id () == octave_int8_matrix::static_type_id () \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
246 || args(0).type_id () == octave_int8_scalar::static_type_id ()) \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
247 { \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
248 int8NDArray x = args(0).int8_array_value (); \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
249 int8NDArray y = args(1).int8_array_value (); \
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parents: 10160
diff changeset
250 if (! error_state) \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
251 BITOPX (OP, FNAME, int8NDArray); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
252 } \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
253 else \
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
254 error ("%s: invalid operand type", FNAME); \
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
255 } \
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
256 else \
10315
57a59eae83cc untabify src C++ source files
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parents: 10160
diff changeset
257 error ("%s: must have matching operand types", FNAME); \
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
258 } \
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
259 else \
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5775
diff changeset
260 print_usage (); \
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
261 \
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
262 return retval
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
263
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
264 DEFUN (bitand, args, ,
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
265 "-*- texinfo -*-\n\
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
266 @deftypefn {Built-in Function} {} bitand (@var{x}, @var{y})\n\
9209
923c7cb7f13f Simplify TeXinfo files by eliminating redundant @iftex followed by @tex construction.
Rik <rdrider0-list@yahoo.com>
parents: 9064
diff changeset
267 Return the bitwise AND of non-negative integers.\n\
8828
8463d1a2e544 Doc fixes.
Brian Gough <bjg@network-theory.co.uk>
parents: 8492
diff changeset
268 @var{x}, @var{y} must be in the range [0,bitmax]\n\
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5307
diff changeset
269 @seealso{bitor, bitxor, bitset, bitget, bitcmp, bitshift, bitmax}\n\
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5307
diff changeset
270 @end deftypefn")
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
271 {
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
272 BITOP (&, "bitand");
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
273 }
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
274
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
275 DEFUN (bitor, args, ,
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
276 "-*- texinfo -*-\n\
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
277 @deftypefn {Built-in Function} {} bitor (@var{x}, @var{y})\n\
9209
923c7cb7f13f Simplify TeXinfo files by eliminating redundant @iftex followed by @tex construction.
Rik <rdrider0-list@yahoo.com>
parents: 9064
diff changeset
278 Return the bitwise OR of non-negative integers.\n\
8828
8463d1a2e544 Doc fixes.
Brian Gough <bjg@network-theory.co.uk>
parents: 8492
diff changeset
279 @var{x}, @var{y} must be in the range [0,bitmax]\n\
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
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diff changeset
280 @seealso{bitor, bitxor, bitset, bitget, bitcmp, bitshift, bitmax}\n\
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281 @end deftypefn")
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282 {
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283 BITOP (|, "bitor");
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284 }
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285
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286 DEFUN (bitxor, args, ,
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287 "-*- texinfo -*-\n\
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288 @deftypefn {Built-in Function} {} bitxor (@var{x}, @var{y})\n\
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289 Return the bitwise XOR of non-negative integers.\n\
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290 @var{x}, @var{y} must be in the range [0,bitmax]\n\
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291 @seealso{bitand, bitor, bitset, bitget, bitcmp, bitshift, bitmax}\n\
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292 @end deftypefn")
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293 {
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294 BITOP (^, "bitxor");
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295 }
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296
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297 static int64_t
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298 bitshift (double a, int n, int64_t mask)
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299 {
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300 // In the name of bug-for-bug compatibility.
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301 if (a < 0)
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302 return -bitshift (-a, n, mask);
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303
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304 if (n > 0)
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305 return (static_cast<int64_t> (a) << n) & mask;
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306 else if (n < 0)
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307 return (static_cast<int64_t> (a) >> -n) & mask;
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308 else
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309 return static_cast<int64_t> (a) & mask;
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310 }
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311
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312 static int64_t
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313 bitshift (float a, int n, int64_t mask)
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314 {
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315 // In the name of bug-for-bug compatibility.
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316 if (a < 0)
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317 return -bitshift (-a, n, mask);
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318
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319 if (n > 0)
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320 return (static_cast<int64_t> (a) << n) & mask;
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321 else if (n < 0)
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322 return (static_cast<int64_t> (a) >> -n) & mask;
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323 else
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324 return static_cast<int64_t> (a) & mask;
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325 }
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326
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327 // Note that the bitshift operators are undefined if shifted by more
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328 // bits than in the type, so we need to test for the size of the
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329 // shift.
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330
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331 #define DO_BITSHIFT(T) \
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332 if (! error_state) \
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333 { \
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334 double d1, d2; \
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335 \
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336 if (n.all_integers (d1, d2)) \
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337 { \
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338 int m_nel = m.numel (); \
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339 int n_nel = n.numel (); \
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340 \
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341 bool is_scalar_op = (m_nel == 1 || n_nel == 1); \
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342 \
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343 dim_vector m_dv = m.dims (); \
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344 dim_vector n_dv = n.dims (); \
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345 \
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346 bool is_array_op = (m_dv == n_dv); \
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347 \
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348 if (is_array_op || is_scalar_op) \
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349 { \
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350 T ## NDArray result; \
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351 \
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352 if (m_nel != 1) \
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353 result.resize (m_dv); \
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354 else \
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355 result.resize (n_dv); \
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356 \
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357 for (int i = 0; i < m_nel; i++) \
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358 if (is_scalar_op) \
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359 for (int k = 0; k < n_nel; k++) \
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360 if (static_cast<int> (n(k)) >= bits_in_type) \
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361 result(i+k) = 0; \
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362 else \
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363 result(i+k) = bitshift (m(i), static_cast<int> (n(k)), mask); \
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364 else \
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365 if (static_cast<int> (n(i)) >= bits_in_type) \
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366 result(i) = 0; \
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367 else \
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368 result(i) = bitshift (m(i), static_cast<int> (n(i)), mask); \
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369 \
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370 retval = result; \
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371 } \
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372 else \
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373 error ("bitshift: size of A and N must match, or one operand must be a scalar"); \
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374 } \
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375 else \
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376 error ("bitshift: expecting integer as second argument"); \
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377 }
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378
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379 #define DO_UBITSHIFT(T, N) \
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380 do \
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381 { \
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382 int bits_in_type = octave_ ## T :: nbits (); \
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383 T ## NDArray m = m_arg.T ## _array_value (); \
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384 octave_ ## T mask = octave_ ## T::max (); \
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385 if ((N) < bits_in_type) \
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386 mask = bitshift (mask, (N) - bits_in_type); \
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387 else if ((N) < 1) \
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388 mask = 0; \
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389 DO_BITSHIFT (T); \
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390 } \
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391 while (0)
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392
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393 #define DO_SBITSHIFT(T, N) \
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394 do \
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395 { \
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396 int bits_in_type = octave_ ## T :: nbits (); \
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397 T ## NDArray m = m_arg.T ## _array_value (); \
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398 octave_ ## T mask = octave_ ## T::max (); \
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399 if ((N) < bits_in_type) \
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400 mask = bitshift (mask, (N) - bits_in_type); \
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401 else if ((N) < 1) \
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402 mask = 0; \
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403 mask = mask | octave_ ## T :: min (); /* FIXME: 2's complement only? */ \
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404 DO_BITSHIFT (T); \
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405 } \
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406 while (0)
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407
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408 DEFUN (bitshift, args, ,
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diff changeset
409 "-*- texinfo -*-\n\
10840
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diff changeset
410 @deftypefn {Built-in Function} {} bitshift (@var{a}, @var{k})\n\
6678
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diff changeset
411 @deftypefnx {Built-in Function} {} bitshift (@var{a}, @var{k}, @var{n})\n\
8492
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diff changeset
412 Return a @var{k} bit shift of @var{n}-digit unsigned\n\
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diff changeset
413 integers in @var{a}. A positive @var{k} leads to a left shift;\n\
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414 A negative value to a right shift. If @var{n} is omitted it defaults\n\
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415 to log2(bitmax)+1.\n\
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diff changeset
416 @var{n} must be in the range [1,log2(bitmax)+1] usually [1,33].\n\
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417 \n\
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418 @example\n\
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diff changeset
419 @group\n\
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420 bitshift (eye (3), 1)\n\
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421 @result{}\n\
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422 @group\n\
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423 2 0 0\n\
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424 0 2 0\n\
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425 0 0 2\n\
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diff changeset
426 @end group\n\
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
427 \n\
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
428 bitshift (10, [-2, -1, 0, 1, 2])\n\
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
429 @result{} 2 5 10 20 40\n\
6439
a37c427ae9d1 [project @ 2007-03-23 15:04:01 by jwe]
jwe
parents: 6108
diff changeset
430 @c FIXME -- restore this example when third arg is allowed to be an array.\n\
12642
f96b9b9f141b doc: Periodic grammarcheck and spellcheck of documentation.
Rik <octave@nomad.inbox5.com>
parents: 12483
diff changeset
431 @c\n\
f96b9b9f141b doc: Periodic grammarcheck and spellcheck of documentation.
Rik <octave@nomad.inbox5.com>
parents: 12483
diff changeset
432 @c\n\
6439
a37c427ae9d1 [project @ 2007-03-23 15:04:01 by jwe]
jwe
parents: 6108
diff changeset
433 @c bitshift ([1, 10], 2, [3,4])\n\
a37c427ae9d1 [project @ 2007-03-23 15:04:01 by jwe]
jwe
parents: 6108
diff changeset
434 @c @result{} 4 8\n\
9064
7c02ec148a3c Check grammar on all .cc files
Rik <rdrider0-list@yahoo.com>
parents: 8920
diff changeset
435 @end group\n\
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
436 @end example\n\
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5307
diff changeset
437 @seealso{bitand, bitor, bitxor, bitset, bitget, bitcmp, bitmax}\n\
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5307
diff changeset
438 @end deftypefn")
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
439 {
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
440 octave_value retval;
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
441
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
442 int nargin = args.length ();
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
443
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
444 if (nargin == 2 || nargin == 3)
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
445 {
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
446 int nbits = 64;
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
447
4920
b22a7a1db0d5 [project @ 2004-07-27 18:15:25 by jwe]
jwe
parents: 4919
diff changeset
448 NDArray n = args(1).array_value ();
b22a7a1db0d5 [project @ 2004-07-27 18:15:25 by jwe]
jwe
parents: 4919
diff changeset
449
b22a7a1db0d5 [project @ 2004-07-27 18:15:25 by jwe]
jwe
parents: 4919
diff changeset
450 if (error_state)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
451 error ("bitshift: expecting integer as second argument");
4920
b22a7a1db0d5 [project @ 2004-07-27 18:15:25 by jwe]
jwe
parents: 4919
diff changeset
452 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
453 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
454 if (nargin == 3)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
455 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
456 // FIXME -- for compatibility, we should accept an array
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
457 // or a scalar as the third argument.
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
458 if (args(2).numel () > 1)
12483
7a5aacf65f81 Rewrite error strings in src/ to use variables named in documentation.
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
459 error ("bitshift: N must be a scalar integer");
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
460 else
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
461 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
462 nbits = args(2).int_value ();
11586
12df7854fa7c strip trailing whitespace from source files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
463
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
464 if (error_state)
12483
7a5aacf65f81 Rewrite error strings in src/ to use variables named in documentation.
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
465 error ("bitshift: N must be an integer");
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
466 else if (nbits < 0)
12483
7a5aacf65f81 Rewrite error strings in src/ to use variables named in documentation.
Rik <octave@nomad.inbox5.com>
parents: 11586
diff changeset
467 error ("bitshift: N must be positive");
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
468 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
469 }
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
470 }
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
471
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
472 if (error_state)
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
473 return retval;
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
474
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
475 octave_value m_arg = args(0);
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
476 std::string cname = m_arg.class_name ();
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
477
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
478 if (cname == "uint8")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
479 DO_UBITSHIFT (uint8, nbits < 8 ? nbits : 8);
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
480 else if (cname == "uint16")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
481 DO_UBITSHIFT (uint16, nbits < 16 ? nbits : 16);
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
482 else if (cname == "uint32")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
483 DO_UBITSHIFT (uint32, nbits < 32 ? nbits : 32);
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
484 else if (cname == "uint64")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
485 DO_UBITSHIFT (uint64, nbits < 64 ? nbits : 64);
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
486 else if (cname == "int8")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
487 DO_SBITSHIFT (int8, nbits < 8 ? nbits : 8);
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
488 else if (cname == "int16")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
489 DO_SBITSHIFT (int16, nbits < 16 ? nbits : 16);
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
490 else if (cname == "int32")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
491 DO_SBITSHIFT (int32, nbits < 32 ? nbits : 32);
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
492 else if (cname == "int64")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
493 DO_SBITSHIFT (int64, nbits < 64 ? nbits : 64);
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
494 else if (cname == "double")
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
495 {
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
496 nbits = (nbits < 53 ? nbits : 53);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
497 int64_t mask = 0x1FFFFFFFFFFFFFLL;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
498 if (nbits < 53)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
499 mask = mask >> (53 - nbits);
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
500 else if (nbits < 1)
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
501 mask = 0;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
502 int bits_in_type = 64;
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
503 NDArray m = m_arg.array_value ();
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
504 DO_BITSHIFT ( );
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
505 }
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
506 else
10315
57a59eae83cc untabify src C++ source files
John W. Eaton <jwe@octave.org>
parents: 10160
diff changeset
507 error ("bitshift: not defined for %s objects", cname.c_str ());
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
508 }
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
509 else
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5775
diff changeset
510 print_usage ();
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
511
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
512 return retval;
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
513 }
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
514
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
515 DEFUN (bitmax, args, ,
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
516 "-*- texinfo -*-\n\
10897
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
517 @deftypefn {Built-in Function} {} bitmax ()\n\
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
518 @deftypefnx {Built-in Function} {} bitmax (\"double\")\n\
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
519 @deftypefnx {Built-in Function} {} bitmax (\"single\")\n\
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
520 Return the largest integer that can be represented within a floating point\n\
12642
f96b9b9f141b doc: Periodic grammarcheck and spellcheck of documentation.
Rik <octave@nomad.inbox5.com>
parents: 12483
diff changeset
521 value. The default class is \"double\", but \"single\" is a valid option.\n\
10897
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
522 On IEEE-754 compatible systems, @code{bitmax} is @w{@math{2^{53} - 1}}.\n\
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
523 @end deftypefn")
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
524 {
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
525 octave_value retval;
10897
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
526 std::string cname = "double";
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
527 int nargin = args.length ();
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
528
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
529 if (nargin == 1 && args(0).is_string ())
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
530 cname = args(0).string_value ();
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
531 else if (nargin != 0)
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
532 {
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
533 print_usage ();
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
534 return retval;
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
535 }
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
536
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
537 if (cname == "double")
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
538 retval = (static_cast<double> (0x1FFFFFFFFFFFFFLL));
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
539 else if (cname == "single")
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
540 retval = (static_cast<double> (0xFFFFFFL));
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
541 else
10897
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
542 error ("bitmax: not defined for class '%s'", cname.c_str ());
dbec9d590756 Add CLASS argument to bitmax
Rik <octave@nomad.inbox5.com>
parents: 10895
diff changeset
543
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
544 return retval;
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
545 }
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
546
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
547 DEFUN (intmax, args, ,
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
548 "-*- texinfo -*-\n\
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
549 @deftypefn {Built-in Function} {} intmax (@var{type})\n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
550 Return the largest integer that can be represented in an integer type.\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
551 The variable @var{type} can be\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
552 \n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
553 @table @code\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
554 @item int8\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
555 signed 8-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
556 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
557 @item int16\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
558 signed 16-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
559 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
560 @item int32\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
561 signed 32-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
562 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
563 @item int64\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
564 signed 64-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
565 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
566 @item uint8\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
567 unsigned 8-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
568 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
569 @item uint16\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
570 unsigned 16-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
571 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
572 @item uint32\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
573 unsigned 32-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
574 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
575 @item uint64\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
576 unsigned 64-bit integer.\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
577 @end table\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
578 \n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
579 The default for @var{type} is @code{uint32}.\n\
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5307
diff changeset
580 @seealso{intmin, bitmax}\n\
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
581 @end deftypefn")
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
582 {
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
583 octave_value retval;
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
584 std::string cname = "int32";
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
585 int nargin = args.length ();
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
586
4919
a1073eef650c [project @ 2004-07-27 15:22:50 by jwe]
jwe
parents: 4915
diff changeset
587 if (nargin == 1 && args(0).is_string ())
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
588 cname = args(0).string_value ();
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
589 else if (nargin != 0)
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
590 {
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5775
diff changeset
591 print_usage ();
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
592 return retval;
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
593 }
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
594
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
595 if (cname == "uint8")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
596 retval = octave_uint8 (std::numeric_limits<uint8_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
597 else if (cname == "uint16")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
598 retval = octave_uint16 (std::numeric_limits<uint16_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
599 else if (cname == "uint32")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
600 retval = octave_uint32 (std::numeric_limits<uint32_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
601 else if (cname == "uint64")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
602 retval = octave_uint64 (std::numeric_limits<uint64_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
603 else if (cname == "int8")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
604 retval = octave_int8 (std::numeric_limits<int8_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
605 else if (cname == "int16")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
606 retval = octave_int16 (std::numeric_limits<int16_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
607 else if (cname == "int32")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
608 retval = octave_int32 (std::numeric_limits<int32_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
609 else if (cname == "int64")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
610 retval = octave_int64 (std::numeric_limits<int64_t>::max ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
611 else
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
612 error ("intmax: not defined for '%s' objects", cname.c_str ());
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
613
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
614 return retval;
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
615 }
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
616
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
617 DEFUN (intmin, args, ,
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
618 "-*- texinfo -*-\n\
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
619 @deftypefn {Built-in Function} {} intmin (@var{type})\n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
620 Return the smallest integer that can be represented in an integer type.\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
621 The variable @var{type} can be\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
622 \n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
623 @table @code\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
624 @item int8\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
625 signed 8-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
626 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
627 @item int16\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
628 signed 16-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
629 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
630 @item int32\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
631 signed 32-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
632 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
633 @item int64\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
634 signed 64-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
635 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
636 @item uint8\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
637 unsigned 8-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
638 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
639 @item uint16\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
640 unsigned 16-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
641 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
642 @item uint32\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
643 unsigned 32-bit integer.\n\
10840
89f4d7e294cc Grammarcheck .cc files
Rik <octave@nomad.inbox5.com>
parents: 10830
diff changeset
644 \n\
5040
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
645 @item uint64\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
646 unsigned 64-bit integer.\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
647 @end table\n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
648 \n\
b6ff3a0d3d17 [project @ 2004-09-27 13:50:01 by jwe]
jwe
parents: 4952
diff changeset
649 The default for @var{type} is @code{uint32}.\n\
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5307
diff changeset
650 @seealso{intmax, bitmax}\n\
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
651 @end deftypefn")
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
652 {
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
653 octave_value retval;
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
654 std::string cname = "int32";
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
655 int nargin = args.length ();
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
656
4919
a1073eef650c [project @ 2004-07-27 15:22:50 by jwe]
jwe
parents: 4915
diff changeset
657 if (nargin == 1 && args(0).is_string ())
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
658 cname = args(0).string_value ();
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
659 else if (nargin != 0)
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
660 {
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5775
diff changeset
661 print_usage ();
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
662 return retval;
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
663 }
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
664
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
665 if (cname == "uint8")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
666 retval = octave_uint8 (std::numeric_limits<uint8_t>::min ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
667 else if (cname == "uint16")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
668 retval = octave_uint16 (std::numeric_limits<uint16_t>::min());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
669 else if (cname == "uint32")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
670 retval = octave_uint32 (std::numeric_limits<uint32_t>::min ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
671 else if (cname == "uint64")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
672 retval = octave_uint64 (std::numeric_limits<uint64_t>::min ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
673 else if (cname == "int8")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
674 retval = octave_int8 (std::numeric_limits<int8_t>::min ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
675 else if (cname == "int16")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
676 retval = octave_int16 (std::numeric_limits<int16_t>::min ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
677 else if (cname == "int32")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
678 retval = octave_int32 (std::numeric_limits<int32_t>::min ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
679 else if (cname == "int64")
5828
22e23bee74c8 [project @ 2006-05-23 06:05:14 by jwe]
jwe
parents: 5823
diff changeset
680 retval = octave_int64 (std::numeric_limits<int64_t>::min ());
4915
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
681 else
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
682 error ("intmin: not defined for '%s' objects", cname.c_str ());
c638c144d4da [project @ 2004-07-23 19:01:22 by jwe]
jwe
parents: 4908
diff changeset
683
4908
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
684 return retval;
66af4b9f451e [project @ 2004-06-29 19:20:00 by jwe]
jwe
parents:
diff changeset
685 }
10811
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
686
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
687 DEFUN (sizemax, args, ,
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
688 "-*- texinfo -*-\n\
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
689 @deftypefn {Built-in Function} {} sizemax ()\n\
10895
4176c5c62138 Imrove documentation string for sizemax
Rik <octave@nomad.inbox5.com>
parents: 10840
diff changeset
690 Return the largest value allowed for the size of an array.\n\
10811
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
691 If Octave is compiled with 64-bit indexing, the result is of class int64,\n\
10895
4176c5c62138 Imrove documentation string for sizemax
Rik <octave@nomad.inbox5.com>
parents: 10840
diff changeset
692 otherwise it is of class int32. The maximum array size is slightly\n\
4176c5c62138 Imrove documentation string for sizemax
Rik <octave@nomad.inbox5.com>
parents: 10840
diff changeset
693 smaller than the maximum value allowable for the relevant class as reported\n\
4176c5c62138 Imrove documentation string for sizemax
Rik <octave@nomad.inbox5.com>
parents: 10840
diff changeset
694 by @code{intmax}.\n\
10811
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
695 @seealso{intmax}\n\
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
696 @end deftypefn")
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
697 {
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
698 octave_value retval;
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
699
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
700 if (args.length () == 0)
10830
b4ebfd675321 avoid static initialization disaster in dim_vector
Jaroslav Hajek <highegg@gmail.com>
parents: 10811
diff changeset
701 retval = octave_int<octave_idx_type> (dim_vector::dim_max ());
10811
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
702 else
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
703 print_usage ();
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
704
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
705 return retval;
e38c071bbc41 allow user query the maximum array size
Jaroslav Hajek <highegg@gmail.com>
parents: 10315
diff changeset
706 }