HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 339bfe47 | 1 | ;;;; bit-operations.test --- bitwise operations on numbers -*- scheme -*- |
| 96e30d2a | 2 | ;;;; Copyright (C) 2000, 2001 Free Software Foundation, Inc. |
| 339bfe47 DH |
3 | ;;;; |
| 4 | ;;;; This program is free software; you can redistribute it and/or modify | |
| 5 | ;;;; it under the terms of the GNU General Public License as published by | |
| 6 | ;;;; the Free Software Foundation; either version 2, or (at your option) | |
| 7 | ;;;; any later version. | |
| 8 | ;;;; | |
| 9 | ;;;; This program is distributed in the hope that it will be useful, | |
| 10 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | ;;;; GNU General Public License for more details. | |
| 13 | ;;;; | |
| 14 | ;;;; You should have received a copy of the GNU General Public License | |
| 15 | ;;;; along with this software; see the file COPYING. If not, write to | |
| 16 | ;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330, | |
| 17 | ;;;; Boston, MA 02111-1307 USA | |
| 18 | ;;;; | |
| 19 | ;;;; As a special exception, the Free Software Foundation gives permission | |
| 20 | ;;;; for additional uses of the text contained in its release of GUILE. | |
| 21 | ;;;; | |
| 22 | ;;;; The exception is that, if you link the GUILE library with other files | |
| 23 | ;;;; to produce an executable, this does not by itself cause the | |
| 24 | ;;;; resulting executable to be covered by the GNU General Public License. | |
| 25 | ;;;; Your use of that executable is in no way restricted on account of | |
| 26 | ;;;; linking the GUILE library code into it. | |
| 27 | ;;;; | |
| 28 | ;;;; This exception does not however invalidate any other reasons why | |
| 29 | ;;;; the executable file might be covered by the GNU General Public License. | |
| 30 | ;;;; | |
| 31 | ;;;; This exception applies only to the code released by the | |
| 32 | ;;;; Free Software Foundation under the name GUILE. If you copy | |
| 33 | ;;;; code from other Free Software Foundation releases into a copy of | |
| 34 | ;;;; GUILE, as the General Public License permits, the exception does | |
| 35 | ;;;; not apply to the code that you add in this way. To avoid misleading | |
| 36 | ;;;; anyone as to the status of such modified files, you must delete | |
| 37 | ;;;; this exception notice from them. | |
| 38 | ;;;; | |
| 39 | ;;;; If you write modifications of your own for GUILE, it is your choice | |
| 40 | ;;;; whether to permit this exception to apply to your modifications. | |
| 41 | ;;;; If you do not wish that, delete this exception notice. | |
| 42 | ||
| 43 | (use-modules (ice-9 documentation)) | |
| 44 | ||
| 45 | ||
| 46 | ;;; | |
| 47 | ;;; miscellaneous | |
| 48 | ;;; | |
| 49 | ||
| 50 | (define (run-tests name-proc test-proc arg-sets) | |
| 51 | (for-each | |
| 52 | (lambda (arg-set) | |
| 53 | (pass-if (apply name-proc arg-set) | |
| 54 | (apply test-proc arg-set))) | |
| 55 | arg-sets)) | |
| 56 | ||
| 57 | (define (documented? object) | |
| 5c96bc39 | 58 | (not (not (object-documentation object)))) |
| 339bfe47 | 59 | |
| af297b33 RB |
60 | (define fixnum-bit |
| 61 | (inexact->exact (+ (/ (log (+ most-positive-fixnum 1)) (log 2)) 1))) | |
| 62 | ||
| 339bfe47 DH |
63 | (define fixnum-min most-negative-fixnum) |
| 64 | (define fixnum-max most-positive-fixnum) | |
| 65 | ||
| 66 | (with-test-prefix "bit-extract" | |
| 67 | ||
| 68 | (pass-if "documented?" | |
| 69 | (documented? bit-extract)) | |
| 70 | ||
| 71 | (with-test-prefix "extract from zero" | |
| 72 | ||
| 73 | (run-tests | |
| 74 | (lambda (a b c d) | |
| 75 | (string-append "single bit " (number->string b))) | |
| 76 | (lambda (a b c d) | |
| 77 | (= (bit-extract a b c) d)) | |
| 78 | (list | |
| 79 | (list 0 0 1 0) | |
| 80 | (list 0 1 2 0) | |
| 81 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit -1) 0) | |
| 82 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit 0) 0) | |
| 83 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit 1) 0) | |
| 84 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit 2) 0))) | |
| 85 | ||
| 86 | (run-tests | |
| 87 | (lambda (a b c d) | |
| 88 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 89 | (lambda (a b c d) | |
| 90 | (= (bit-extract a b c) d)) | |
| 91 | (list | |
| 92 | (list 0 0 (+ fixnum-bit -1) 0) | |
| 93 | (list 0 1 (+ fixnum-bit 0) 0) | |
| 94 | (list 0 2 (+ fixnum-bit 1) 0) | |
| 95 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 0) | |
| 96 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 0) | |
| 97 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0) | |
| 98 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0))) | |
| 99 | ||
| 100 | (run-tests | |
| 101 | (lambda (a b c d) | |
| 102 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 103 | (lambda (a b c d) | |
| 104 | (= (bit-extract a b c) d)) | |
| 105 | (list | |
| 106 | (list 0 0 (+ fixnum-bit 0) 0) | |
| 107 | (list 0 1 (+ fixnum-bit 1) 0) | |
| 108 | (list 0 2 (+ fixnum-bit 2) 0) | |
| 109 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 0) | |
| 110 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 0) | |
| 111 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0) | |
| 112 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0))) | |
| 113 | ||
| 114 | (run-tests | |
| 115 | (lambda (a b c d) | |
| 116 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 117 | (lambda (a b c d) | |
| 118 | (= (bit-extract a b c) d)) | |
| 119 | (list | |
| 120 | (list 0 0 (+ fixnum-bit 1) 0) | |
| 121 | (list 0 1 (+ fixnum-bit 2) 0) | |
| 122 | (list 0 2 (+ fixnum-bit 3) 0) | |
| 123 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 0) | |
| 124 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 0) | |
| 125 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0) | |
| 126 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0)))) | |
| 127 | ||
| 128 | (with-test-prefix "extract from fixnum-max" | |
| 129 | ||
| 130 | (run-tests | |
| 131 | (lambda (a b c d) | |
| 132 | (string-append "single bit " (number->string b))) | |
| 133 | (lambda (a b c d) | |
| 134 | (= (bit-extract a b c) d)) | |
| 135 | (list | |
| 136 | (list fixnum-max 0 1 1) | |
| 137 | (list fixnum-max 1 2 1) | |
| 138 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit -1) 1) | |
| 139 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit 0) 0) | |
| 140 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit 1) 0) | |
| 141 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit 2) 0))) | |
| 142 | ||
| 143 | (run-tests | |
| 144 | (lambda (a b c d) | |
| 145 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 146 | (lambda (a b c d) | |
| 147 | (= (bit-extract a b c) d)) | |
| 148 | (list | |
| 149 | (list fixnum-max 0 (+ fixnum-bit -1) (ash fixnum-max 0)) | |
| 150 | (list fixnum-max 1 (+ fixnum-bit 0) (ash fixnum-max -1)) | |
| 151 | (list fixnum-max 2 (+ fixnum-bit 1) (ash fixnum-max -2)) | |
| 152 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 1) | |
| 153 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 0) | |
| 154 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0) | |
| 155 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0))) | |
| 156 | ||
| 157 | (run-tests | |
| 158 | (lambda (a b c d) | |
| 159 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 160 | (lambda (a b c d) | |
| 161 | (= (bit-extract a b c) d)) | |
| 162 | (list | |
| 163 | (list fixnum-max 0 (+ fixnum-bit 0) (ash fixnum-max 0)) | |
| 164 | (list fixnum-max 1 (+ fixnum-bit 1) (ash fixnum-max -1)) | |
| 165 | (list fixnum-max 2 (+ fixnum-bit 2) (ash fixnum-max -2)) | |
| 166 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 1) | |
| 167 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 0) | |
| 168 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0) | |
| 169 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0))) | |
| 170 | ||
| 171 | (run-tests | |
| 172 | (lambda (a b c d) | |
| 173 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 174 | (lambda (a b c d) | |
| 175 | (= (bit-extract a b c) d)) | |
| 176 | (list | |
| 177 | (list fixnum-max 0 (+ fixnum-bit 1) (ash fixnum-max 0)) | |
| 178 | (list fixnum-max 1 (+ fixnum-bit 2) (ash fixnum-max -1)) | |
| 179 | (list fixnum-max 2 (+ fixnum-bit 3) (ash fixnum-max -2)) | |
| 180 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 1) | |
| 181 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 0) | |
| 182 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0) | |
| 183 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0)))) | |
| 184 | ||
| 185 | (with-test-prefix "extract from fixnum-max + 1" | |
| 186 | ||
| 187 | (run-tests | |
| 188 | (lambda (a b c d) | |
| 189 | (string-append "single bit " (number->string b))) | |
| 190 | (lambda (a b c d) | |
| 191 | (= (bit-extract a b c) d)) | |
| 192 | (list | |
| 193 | (list (+ fixnum-max 1) 0 1 0) | |
| 194 | (list (+ fixnum-max 1) 1 2 0) | |
| 195 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit -1) 0) | |
| 196 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit 0) 1) | |
| 197 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit 1) 0) | |
| 198 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit 2) 0))) | |
| 199 | ||
| 200 | (run-tests | |
| 201 | (lambda (a b c d) | |
| 202 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 203 | (lambda (a b c d) | |
| 204 | (= (bit-extract a b c) d)) | |
| 205 | (list | |
| 206 | (list (+ fixnum-max 1) 0 (+ fixnum-bit -1) (ash 0 (- fixnum-bit 1))) | |
| 207 | (list (+ fixnum-max 1) 1 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 2))) | |
| 208 | (list (+ fixnum-max 1) 2 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 3))) | |
| 209 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 2) | |
| 210 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 1) | |
| 211 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0) | |
| 212 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0))) | |
| 213 | ||
| 214 | (run-tests | |
| 215 | (lambda (a b c d) | |
| 216 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 217 | (lambda (a b c d) | |
| 218 | (= (bit-extract a b c) d)) | |
| 219 | (list | |
| 220 | (list (+ fixnum-max 1) 0 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 1))) | |
| 221 | (list (+ fixnum-max 1) 1 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 2))) | |
| 222 | (list (+ fixnum-max 1) 2 (+ fixnum-bit 2) (ash 1 (- fixnum-bit 3))) | |
| 223 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 2) | |
| 224 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 1) | |
| 225 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0) | |
| 226 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0))) | |
| 227 | ||
| 228 | (run-tests | |
| 229 | (lambda (a b c d) | |
| 230 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 231 | (lambda (a b c d) | |
| 232 | (= (bit-extract a b c) d)) | |
| 233 | (list | |
| 234 | (list (+ fixnum-max 1) 0 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 1))) | |
| 235 | (list (+ fixnum-max 1) 1 (+ fixnum-bit 2) (ash 1 (- fixnum-bit 2))) | |
| 236 | (list (+ fixnum-max 1) 2 (+ fixnum-bit 3) (ash 1 (- fixnum-bit 3))) | |
| 237 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 2) | |
| 238 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 1) | |
| 239 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0) | |
| 240 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0)))) | |
| 241 | ||
| 242 | (with-test-prefix "extract from fixnum-min" | |
| 243 | ||
| 244 | (run-tests | |
| 245 | (lambda (a b c d) | |
| 246 | (string-append "single bit " (number->string b))) | |
| 247 | (lambda (a b c d) | |
| 248 | (= (bit-extract a b c) d)) | |
| 249 | (list | |
| 250 | (list fixnum-min 0 1 0) | |
| 251 | (list fixnum-min 1 2 0) | |
| 252 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit -1) 0) | |
| 253 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit 0) 1) | |
| 254 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit 1) 1) | |
| 255 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit 2) 1))) | |
| 256 | ||
| 257 | (run-tests | |
| 258 | (lambda (a b c d) | |
| 259 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 260 | (lambda (a b c d) | |
| 261 | (= (bit-extract a b c) d)) | |
| 262 | (list | |
| 263 | (list fixnum-min 0 (+ fixnum-bit -1) (ash 0 (- fixnum-bit 1))) | |
| 264 | (list fixnum-min 1 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 2))) | |
| 265 | (list fixnum-min 2 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 3))) | |
| 122cf9a5 RB |
266 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) |
| 267 | (- (ash 1 (- fixnum-bit 1)) 2)) | |
| 268 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) | |
| 269 | (- (ash 1 (- fixnum-bit 1)) 1)) | |
| 270 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) | |
| 271 | (- (ash 1 (- fixnum-bit 1)) 1)) | |
| 272 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) | |
| 273 | (- (ash 1 (- fixnum-bit 1)) 1)))) | |
| 339bfe47 DH |
274 | |
| 275 | (run-tests | |
| 276 | (lambda (a b c d) | |
| 277 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 278 | (lambda (a b c d) | |
| 279 | (= (bit-extract a b c) d)) | |
| 280 | (list | |
| 281 | (list fixnum-min 0 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 1))) | |
| 282 | (list fixnum-min 1 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 2))) | |
| 283 | (list fixnum-min 2 (+ fixnum-bit 2) (ash 7 (- fixnum-bit 3))) | |
| 122cf9a5 RB |
284 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) |
| 285 | (- (ash 1 fixnum-bit) 2)) | |
| 286 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) | |
| 287 | (- (ash 1 fixnum-bit) 1)) | |
| 288 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) | |
| 289 | (- (ash 1 fixnum-bit) 1)) | |
| 290 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) | |
| 291 | (- (ash 1 fixnum-bit) 1)))) | |
| 339bfe47 DH |
292 | |
| 293 | (run-tests | |
| 294 | (lambda (a b c d) | |
| 295 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 296 | (lambda (a b c d) | |
| 297 | (= (bit-extract a b c) d)) | |
| 298 | (list | |
| 299 | (list fixnum-min 0 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 1))) | |
| 300 | (list fixnum-min 1 (+ fixnum-bit 2) (ash 7 (- fixnum-bit 2))) | |
| 301 | (list fixnum-min 2 (+ fixnum-bit 3) (ash 15 (- fixnum-bit 3))) | |
| 122cf9a5 RB |
302 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) |
| 303 | (- (ash 1 (+ fixnum-bit 1)) 2)) | |
| 304 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) | |
| 305 | (- (ash 1 (+ fixnum-bit 1)) 1)) | |
| 306 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) | |
| 307 | (- (ash 1 (+ fixnum-bit 1)) 1)) | |
| 308 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) | |
| 309 | (- (ash 1 (+ fixnum-bit 1)) 1))))) | |
| 339bfe47 DH |
310 | |
| 311 | (with-test-prefix "extract from fixnum-min - 1" | |
| 312 | ||
| 313 | (run-tests | |
| 314 | (lambda (a b c d) | |
| 315 | (string-append "single bit " (number->string b))) | |
| 316 | (lambda (a b c d) | |
| 317 | (= (bit-extract a b c) d)) | |
| 318 | (list | |
| 319 | (list (- fixnum-min 1) 0 1 1) | |
| 320 | (list (- fixnum-min 1) 1 2 1) | |
| 321 | (list (- fixnum-min 1) (+ fixnum-bit -2) (+ fixnum-bit -1) 1) | |
| 322 | (list (- fixnum-min 1) (+ fixnum-bit -1) (+ fixnum-bit 0) 0) | |
| 323 | (list (- fixnum-min 1) (+ fixnum-bit 0) (+ fixnum-bit 1) 1) | |
| 324 | (list (- fixnum-min 1) (+ fixnum-bit 1) (+ fixnum-bit 2) 1))) | |
| 325 | ||
| 326 | (run-tests | |
| 327 | (lambda (a b c d) | |
| 328 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 329 | (lambda (a b c d) | |
| 330 | (= (bit-extract a b c) d)) | |
| 331 | (list | |
| 122cf9a5 RB |
332 | (list (- fixnum-min 1) 0 (+ fixnum-bit -1) |
| 333 | (- (ash 1 (- fixnum-bit 1)) 1 (ash 0 (- fixnum-bit 1)))) | |
| 334 | (list (- fixnum-min 1) 1 (+ fixnum-bit 0) | |
| 335 | (- (ash 1 (- fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 2)))) | |
| 336 | (list (- fixnum-min 1) 2 (+ fixnum-bit 1) | |
| 337 | (- (ash 1 (- fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 3)))) | |
| 338 | (list (- fixnum-min 1) (+ fixnum-bit -2) | |
| 339 | (+ fixnum-bit fixnum-bit -3) (- (ash 1 (- fixnum-bit 1)) 3)) | |
| 340 | (list (- fixnum-min 1) (+ fixnum-bit -1) | |
| 341 | (+ fixnum-bit fixnum-bit -2) (- (ash 1 (- fixnum-bit 1)) 2)) | |
| 342 | (list (- fixnum-min 1) (+ fixnum-bit 0) | |
| 343 | (+ fixnum-bit fixnum-bit -1) (- (ash 1 (- fixnum-bit 1)) 1)) | |
| 344 | (list (- fixnum-min 1) (+ fixnum-bit 1) | |
| 345 | (+ fixnum-bit fixnum-bit 0) (- (ash 1 (- fixnum-bit 1)) 1)))) | |
| 339bfe47 DH |
346 | |
| 347 | (run-tests | |
| 348 | (lambda (a b c d) | |
| 349 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 350 | (lambda (a b c d) | |
| 351 | (= (bit-extract a b c) d)) | |
| 352 | (list | |
| 122cf9a5 RB |
353 | (list (- fixnum-min 1) 0 (+ fixnum-bit 0) |
| 354 | (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 1)))) | |
| 355 | (list (- fixnum-min 1) 1 (+ fixnum-bit 1) | |
| 356 | (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 2)))) | |
| 357 | (list (- fixnum-min 1) 2 (+ fixnum-bit 2) | |
| 358 | (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 3)))) | |
| 359 | (list (- fixnum-min 1) (+ fixnum-bit -2) | |
| 360 | (+ fixnum-bit fixnum-bit -2) (- (ash 1 fixnum-bit) 3)) | |
| 361 | (list (- fixnum-min 1) (+ fixnum-bit -1) | |
| 362 | (+ fixnum-bit fixnum-bit -1) (- (ash 1 fixnum-bit) 2)) | |
| 363 | (list (- fixnum-min 1) (+ fixnum-bit 0) | |
| 364 | (+ fixnum-bit fixnum-bit 0) (- (ash 1 fixnum-bit) 1)) | |
| 365 | (list (- fixnum-min 1) (+ fixnum-bit 1) | |
| 366 | (+ fixnum-bit fixnum-bit 1) (- (ash 1 fixnum-bit) 1)))) | |
| 339bfe47 DH |
367 | |
| 368 | (run-tests | |
| 369 | (lambda (a b c d) | |
| 370 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 371 | (lambda (a b c d) | |
| 372 | (= (bit-extract a b c) d)) | |
| 373 | (list | |
| 122cf9a5 RB |
374 | (list (- fixnum-min 1) 0 (+ fixnum-bit 1) |
| 375 | (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 1)))) | |
| 376 | (list (- fixnum-min 1) 1 (+ fixnum-bit 2) | |
| 377 | (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 2)))) | |
| 378 | (list (- fixnum-min 1) 2 (+ fixnum-bit 3) | |
| 379 | (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 3)))) | |
| 380 | (list (- fixnum-min 1) (+ fixnum-bit -2) | |
| 381 | (+ fixnum-bit fixnum-bit -1) (- (ash 1 (+ fixnum-bit 1)) 3)) | |
| 382 | (list (- fixnum-min 1) (+ fixnum-bit -1) | |
| 383 | (+ fixnum-bit fixnum-bit 0) (- (ash 1 (+ fixnum-bit 1)) 2)) | |
| 384 | (list (- fixnum-min 1) (+ fixnum-bit 0) | |
| 385 | (+ fixnum-bit fixnum-bit 1) (- (ash 1 (+ fixnum-bit 1)) 1)) | |
| 386 | (list (- fixnum-min 1) (+ fixnum-bit 1) | |
| 387 | (+ fixnum-bit fixnum-bit 2) (- (ash 1 (+ fixnum-bit 1)) 1)))))) |