HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 339bfe47 | 1 | ;;;; bit-operations.test --- bitwise operations on numbers -*- scheme -*- |
| 8ecd1943 | 2 | ;;;; Copyright (C) 2000, 2001, 2003, 2006, 2009, 2010 Free Software Foundation, Inc. |
| 339bfe47 | 3 | ;;;; |
| 73be1d9e MV |
4 | ;;;; This library is free software; you can redistribute it and/or |
| 5 | ;;;; modify it under the terms of the GNU Lesser General Public | |
| 6 | ;;;; License as published by the Free Software Foundation; either | |
| 53befeb7 | 7 | ;;;; version 3 of the License, or (at your option) any later version. |
| 73be1d9e MV |
8 | ;;;; |
| 9 | ;;;; This library is distributed in the hope that it will be useful, | |
| 339bfe47 | 10 | ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 73be1d9e MV |
11 | ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | ;;;; Lesser General Public License for more details. | |
| 13 | ;;;; | |
| 14 | ;;;; You should have received a copy of the GNU Lesser General Public | |
| 15 | ;;;; License along with this library; if not, write to the Free Software | |
| 92205699 | 16 | ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 339bfe47 | 17 | |
| 9120012f LC |
18 | (define-module (test-bit-operations) |
| 19 | :use-module (test-suite lib) | |
| 20 | :use-module (ice-9 documentation)) | |
| 339bfe47 DH |
21 | |
| 22 | ||
| 23 | ;;; | |
| 24 | ;;; miscellaneous | |
| 25 | ;;; | |
| 26 | ||
| 27 | (define (run-tests name-proc test-proc arg-sets) | |
| 28 | (for-each | |
| 29 | (lambda (arg-set) | |
| 30 | (pass-if (apply name-proc arg-set) | |
| 31 | (apply test-proc arg-set))) | |
| 32 | arg-sets)) | |
| 33 | ||
| 34 | (define (documented? object) | |
| 5c96bc39 | 35 | (not (not (object-documentation object)))) |
| 339bfe47 | 36 | |
| af297b33 | 37 | (define fixnum-bit |
| 9dd9857f | 38 | (inexact->exact (round (+ (/ (log (+ most-positive-fixnum 1)) (log 2)) 1)))) |
| af297b33 | 39 | |
| 339bfe47 DH |
40 | (define fixnum-min most-negative-fixnum) |
| 41 | (define fixnum-max most-positive-fixnum) | |
| 42 | ||
| 43 | (with-test-prefix "bit-extract" | |
| 44 | ||
| 45 | (pass-if "documented?" | |
| 46 | (documented? bit-extract)) | |
| 47 | ||
| 48 | (with-test-prefix "extract from zero" | |
| 49 | ||
| 50 | (run-tests | |
| 51 | (lambda (a b c d) | |
| 52 | (string-append "single bit " (number->string b))) | |
| 53 | (lambda (a b c d) | |
| 54 | (= (bit-extract a b c) d)) | |
| 55 | (list | |
| 56 | (list 0 0 1 0) | |
| 57 | (list 0 1 2 0) | |
| 58 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit -1) 0) | |
| 59 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit 0) 0) | |
| 60 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit 1) 0) | |
| 61 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit 2) 0))) | |
| 62 | ||
| 63 | (run-tests | |
| 64 | (lambda (a b c d) | |
| 65 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 66 | (lambda (a b c d) | |
| 67 | (= (bit-extract a b c) d)) | |
| 68 | (list | |
| 69 | (list 0 0 (+ fixnum-bit -1) 0) | |
| 70 | (list 0 1 (+ fixnum-bit 0) 0) | |
| 71 | (list 0 2 (+ fixnum-bit 1) 0) | |
| 72 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 0) | |
| 73 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 0) | |
| 74 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0) | |
| 75 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0))) | |
| 76 | ||
| 77 | (run-tests | |
| 78 | (lambda (a b c d) | |
| 79 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 80 | (lambda (a b c d) | |
| 81 | (= (bit-extract a b c) d)) | |
| 82 | (list | |
| 83 | (list 0 0 (+ fixnum-bit 0) 0) | |
| 84 | (list 0 1 (+ fixnum-bit 1) 0) | |
| 85 | (list 0 2 (+ fixnum-bit 2) 0) | |
| 86 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 0) | |
| 87 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 0) | |
| 88 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0) | |
| 89 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0))) | |
| 90 | ||
| 91 | (run-tests | |
| 92 | (lambda (a b c d) | |
| 93 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 94 | (lambda (a b c d) | |
| 95 | (= (bit-extract a b c) d)) | |
| 96 | (list | |
| 97 | (list 0 0 (+ fixnum-bit 1) 0) | |
| 98 | (list 0 1 (+ fixnum-bit 2) 0) | |
| 99 | (list 0 2 (+ fixnum-bit 3) 0) | |
| 100 | (list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 0) | |
| 101 | (list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 0) | |
| 102 | (list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0) | |
| 103 | (list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0)))) | |
| 104 | ||
| 105 | (with-test-prefix "extract from fixnum-max" | |
| 106 | ||
| 107 | (run-tests | |
| 108 | (lambda (a b c d) | |
| 109 | (string-append "single bit " (number->string b))) | |
| 110 | (lambda (a b c d) | |
| 111 | (= (bit-extract a b c) d)) | |
| 112 | (list | |
| 113 | (list fixnum-max 0 1 1) | |
| 114 | (list fixnum-max 1 2 1) | |
| 115 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit -1) 1) | |
| 116 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit 0) 0) | |
| 117 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit 1) 0) | |
| 118 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit 2) 0))) | |
| 119 | ||
| 120 | (run-tests | |
| 121 | (lambda (a b c d) | |
| 122 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 123 | (lambda (a b c d) | |
| 124 | (= (bit-extract a b c) d)) | |
| 125 | (list | |
| 126 | (list fixnum-max 0 (+ fixnum-bit -1) (ash fixnum-max 0)) | |
| 127 | (list fixnum-max 1 (+ fixnum-bit 0) (ash fixnum-max -1)) | |
| 128 | (list fixnum-max 2 (+ fixnum-bit 1) (ash fixnum-max -2)) | |
| 129 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 1) | |
| 130 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 0) | |
| 131 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0) | |
| 132 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0))) | |
| 133 | ||
| 134 | (run-tests | |
| 135 | (lambda (a b c d) | |
| 136 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 137 | (lambda (a b c d) | |
| 138 | (= (bit-extract a b c) d)) | |
| 139 | (list | |
| 140 | (list fixnum-max 0 (+ fixnum-bit 0) (ash fixnum-max 0)) | |
| 141 | (list fixnum-max 1 (+ fixnum-bit 1) (ash fixnum-max -1)) | |
| 142 | (list fixnum-max 2 (+ fixnum-bit 2) (ash fixnum-max -2)) | |
| 143 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 1) | |
| 144 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 0) | |
| 145 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0) | |
| 146 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0))) | |
| 147 | ||
| 148 | (run-tests | |
| 149 | (lambda (a b c d) | |
| 150 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 151 | (lambda (a b c d) | |
| 152 | (= (bit-extract a b c) d)) | |
| 153 | (list | |
| 154 | (list fixnum-max 0 (+ fixnum-bit 1) (ash fixnum-max 0)) | |
| 155 | (list fixnum-max 1 (+ fixnum-bit 2) (ash fixnum-max -1)) | |
| 156 | (list fixnum-max 2 (+ fixnum-bit 3) (ash fixnum-max -2)) | |
| 157 | (list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 1) | |
| 158 | (list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 0) | |
| 159 | (list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0) | |
| 160 | (list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0)))) | |
| 161 | ||
| 162 | (with-test-prefix "extract from fixnum-max + 1" | |
| 163 | ||
| 164 | (run-tests | |
| 165 | (lambda (a b c d) | |
| 166 | (string-append "single bit " (number->string b))) | |
| 167 | (lambda (a b c d) | |
| 168 | (= (bit-extract a b c) d)) | |
| 169 | (list | |
| 170 | (list (+ fixnum-max 1) 0 1 0) | |
| 171 | (list (+ fixnum-max 1) 1 2 0) | |
| 172 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit -1) 0) | |
| 173 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit 0) 1) | |
| 174 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit 1) 0) | |
| 175 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit 2) 0))) | |
| 176 | ||
| 177 | (run-tests | |
| 178 | (lambda (a b c d) | |
| 179 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 180 | (lambda (a b c d) | |
| 181 | (= (bit-extract a b c) d)) | |
| 182 | (list | |
| 183 | (list (+ fixnum-max 1) 0 (+ fixnum-bit -1) (ash 0 (- fixnum-bit 1))) | |
| 184 | (list (+ fixnum-max 1) 1 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 2))) | |
| 185 | (list (+ fixnum-max 1) 2 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 3))) | |
| 186 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 2) | |
| 187 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 1) | |
| 188 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0) | |
| 189 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0))) | |
| 190 | ||
| 191 | (run-tests | |
| 192 | (lambda (a b c d) | |
| 193 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 194 | (lambda (a b c d) | |
| 195 | (= (bit-extract a b c) d)) | |
| 196 | (list | |
| 197 | (list (+ fixnum-max 1) 0 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 1))) | |
| 198 | (list (+ fixnum-max 1) 1 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 2))) | |
| 199 | (list (+ fixnum-max 1) 2 (+ fixnum-bit 2) (ash 1 (- fixnum-bit 3))) | |
| 200 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 2) | |
| 201 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 1) | |
| 202 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0) | |
| 203 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0))) | |
| 204 | ||
| 205 | (run-tests | |
| 206 | (lambda (a b c d) | |
| 207 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 208 | (lambda (a b c d) | |
| 209 | (= (bit-extract a b c) d)) | |
| 210 | (list | |
| 211 | (list (+ fixnum-max 1) 0 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 1))) | |
| 212 | (list (+ fixnum-max 1) 1 (+ fixnum-bit 2) (ash 1 (- fixnum-bit 2))) | |
| 213 | (list (+ fixnum-max 1) 2 (+ fixnum-bit 3) (ash 1 (- fixnum-bit 3))) | |
| 214 | (list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 2) | |
| 215 | (list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 1) | |
| 216 | (list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0) | |
| 217 | (list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0)))) | |
| 218 | ||
| 219 | (with-test-prefix "extract from fixnum-min" | |
| 220 | ||
| 221 | (run-tests | |
| 222 | (lambda (a b c d) | |
| 223 | (string-append "single bit " (number->string b))) | |
| 224 | (lambda (a b c d) | |
| 225 | (= (bit-extract a b c) d)) | |
| 226 | (list | |
| 227 | (list fixnum-min 0 1 0) | |
| 228 | (list fixnum-min 1 2 0) | |
| 229 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit -1) 0) | |
| 230 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit 0) 1) | |
| 231 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit 1) 1) | |
| 232 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit 2) 1))) | |
| 233 | ||
| 234 | (run-tests | |
| 235 | (lambda (a b c d) | |
| 236 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 237 | (lambda (a b c d) | |
| 238 | (= (bit-extract a b c) d)) | |
| 239 | (list | |
| 240 | (list fixnum-min 0 (+ fixnum-bit -1) (ash 0 (- fixnum-bit 1))) | |
| 241 | (list fixnum-min 1 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 2))) | |
| 242 | (list fixnum-min 2 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 3))) | |
| 122cf9a5 RB |
243 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) |
| 244 | (- (ash 1 (- fixnum-bit 1)) 2)) | |
| 245 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) | |
| 246 | (- (ash 1 (- fixnum-bit 1)) 1)) | |
| 247 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) | |
| 248 | (- (ash 1 (- fixnum-bit 1)) 1)) | |
| 249 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) | |
| 250 | (- (ash 1 (- fixnum-bit 1)) 1)))) | |
| 339bfe47 DH |
251 | |
| 252 | (run-tests | |
| 253 | (lambda (a b c d) | |
| 254 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 255 | (lambda (a b c d) | |
| 256 | (= (bit-extract a b c) d)) | |
| 257 | (list | |
| 258 | (list fixnum-min 0 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 1))) | |
| 259 | (list fixnum-min 1 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 2))) | |
| 260 | (list fixnum-min 2 (+ fixnum-bit 2) (ash 7 (- fixnum-bit 3))) | |
| 122cf9a5 RB |
261 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) |
| 262 | (- (ash 1 fixnum-bit) 2)) | |
| 263 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) | |
| 264 | (- (ash 1 fixnum-bit) 1)) | |
| 265 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) | |
| 266 | (- (ash 1 fixnum-bit) 1)) | |
| 267 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) | |
| 268 | (- (ash 1 fixnum-bit) 1)))) | |
| 339bfe47 DH |
269 | |
| 270 | (run-tests | |
| 271 | (lambda (a b c d) | |
| 272 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 273 | (lambda (a b c d) | |
| 274 | (= (bit-extract a b c) d)) | |
| 275 | (list | |
| 276 | (list fixnum-min 0 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 1))) | |
| 277 | (list fixnum-min 1 (+ fixnum-bit 2) (ash 7 (- fixnum-bit 2))) | |
| 278 | (list fixnum-min 2 (+ fixnum-bit 3) (ash 15 (- fixnum-bit 3))) | |
| 122cf9a5 RB |
279 | (list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) |
| 280 | (- (ash 1 (+ fixnum-bit 1)) 2)) | |
| 281 | (list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) | |
| 282 | (- (ash 1 (+ fixnum-bit 1)) 1)) | |
| 283 | (list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) | |
| 284 | (- (ash 1 (+ fixnum-bit 1)) 1)) | |
| 285 | (list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) | |
| 286 | (- (ash 1 (+ fixnum-bit 1)) 1))))) | |
| 339bfe47 DH |
287 | |
| 288 | (with-test-prefix "extract from fixnum-min - 1" | |
| 289 | ||
| 290 | (run-tests | |
| 291 | (lambda (a b c d) | |
| 292 | (string-append "single bit " (number->string b))) | |
| 293 | (lambda (a b c d) | |
| 294 | (= (bit-extract a b c) d)) | |
| 295 | (list | |
| 296 | (list (- fixnum-min 1) 0 1 1) | |
| 297 | (list (- fixnum-min 1) 1 2 1) | |
| 298 | (list (- fixnum-min 1) (+ fixnum-bit -2) (+ fixnum-bit -1) 1) | |
| 299 | (list (- fixnum-min 1) (+ fixnum-bit -1) (+ fixnum-bit 0) 0) | |
| 300 | (list (- fixnum-min 1) (+ fixnum-bit 0) (+ fixnum-bit 1) 1) | |
| 301 | (list (- fixnum-min 1) (+ fixnum-bit 1) (+ fixnum-bit 2) 1))) | |
| 302 | ||
| 303 | (run-tests | |
| 304 | (lambda (a b c d) | |
| 305 | (string-append "fixnum-bit - 1 bits starting at " (number->string b))) | |
| 306 | (lambda (a b c d) | |
| 307 | (= (bit-extract a b c) d)) | |
| 308 | (list | |
| 122cf9a5 RB |
309 | (list (- fixnum-min 1) 0 (+ fixnum-bit -1) |
| 310 | (- (ash 1 (- fixnum-bit 1)) 1 (ash 0 (- fixnum-bit 1)))) | |
| 311 | (list (- fixnum-min 1) 1 (+ fixnum-bit 0) | |
| 312 | (- (ash 1 (- fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 2)))) | |
| 313 | (list (- fixnum-min 1) 2 (+ fixnum-bit 1) | |
| 314 | (- (ash 1 (- fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 3)))) | |
| 315 | (list (- fixnum-min 1) (+ fixnum-bit -2) | |
| 316 | (+ fixnum-bit fixnum-bit -3) (- (ash 1 (- fixnum-bit 1)) 3)) | |
| 317 | (list (- fixnum-min 1) (+ fixnum-bit -1) | |
| 318 | (+ fixnum-bit fixnum-bit -2) (- (ash 1 (- fixnum-bit 1)) 2)) | |
| 319 | (list (- fixnum-min 1) (+ fixnum-bit 0) | |
| 320 | (+ fixnum-bit fixnum-bit -1) (- (ash 1 (- fixnum-bit 1)) 1)) | |
| 321 | (list (- fixnum-min 1) (+ fixnum-bit 1) | |
| 322 | (+ fixnum-bit fixnum-bit 0) (- (ash 1 (- fixnum-bit 1)) 1)))) | |
| 339bfe47 DH |
323 | |
| 324 | (run-tests | |
| 325 | (lambda (a b c d) | |
| 326 | (string-append "fixnum-bit bits starting at " (number->string b))) | |
| 327 | (lambda (a b c d) | |
| 328 | (= (bit-extract a b c) d)) | |
| 329 | (list | |
| 122cf9a5 RB |
330 | (list (- fixnum-min 1) 0 (+ fixnum-bit 0) |
| 331 | (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 1)))) | |
| 332 | (list (- fixnum-min 1) 1 (+ fixnum-bit 1) | |
| 333 | (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 2)))) | |
| 334 | (list (- fixnum-min 1) 2 (+ fixnum-bit 2) | |
| 335 | (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 3)))) | |
| 336 | (list (- fixnum-min 1) (+ fixnum-bit -2) | |
| 337 | (+ fixnum-bit fixnum-bit -2) (- (ash 1 fixnum-bit) 3)) | |
| 338 | (list (- fixnum-min 1) (+ fixnum-bit -1) | |
| 339 | (+ fixnum-bit fixnum-bit -1) (- (ash 1 fixnum-bit) 2)) | |
| 340 | (list (- fixnum-min 1) (+ fixnum-bit 0) | |
| 341 | (+ fixnum-bit fixnum-bit 0) (- (ash 1 fixnum-bit) 1)) | |
| 342 | (list (- fixnum-min 1) (+ fixnum-bit 1) | |
| 343 | (+ fixnum-bit fixnum-bit 1) (- (ash 1 fixnum-bit) 1)))) | |
| 339bfe47 DH |
344 | |
| 345 | (run-tests | |
| 346 | (lambda (a b c d) | |
| 347 | (string-append "fixnum-bit + 1 bits starting at " (number->string b))) | |
| 348 | (lambda (a b c d) | |
| 349 | (= (bit-extract a b c) d)) | |
| 350 | (list | |
| 122cf9a5 RB |
351 | (list (- fixnum-min 1) 0 (+ fixnum-bit 1) |
| 352 | (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 1)))) | |
| 353 | (list (- fixnum-min 1) 1 (+ fixnum-bit 2) | |
| 354 | (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 2)))) | |
| 355 | (list (- fixnum-min 1) 2 (+ fixnum-bit 3) | |
| 356 | (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 3)))) | |
| 357 | (list (- fixnum-min 1) (+ fixnum-bit -2) | |
| 358 | (+ fixnum-bit fixnum-bit -1) (- (ash 1 (+ fixnum-bit 1)) 3)) | |
| 359 | (list (- fixnum-min 1) (+ fixnum-bit -1) | |
| 360 | (+ fixnum-bit fixnum-bit 0) (- (ash 1 (+ fixnum-bit 1)) 2)) | |
| 361 | (list (- fixnum-min 1) (+ fixnum-bit 0) | |
| 362 | (+ fixnum-bit fixnum-bit 1) (- (ash 1 (+ fixnum-bit 1)) 1)) | |
| 363 | (list (- fixnum-min 1) (+ fixnum-bit 1) | |
| 364 | (+ fixnum-bit fixnum-bit 2) (- (ash 1 (+ fixnum-bit 1)) 1)))))) | |
| 8ecd1943 AW |
365 | |
| 366 | (with-test-prefix "bitshifts on word boundaries" | |
| 367 | (pass-if (= (ash 1 32) 4294967296)) | |
| 368 | (pass-if (= (ash 1 64) 18446744073709551616))) |