test-suite/tests/arrays.test

   1 ;;;; unif.test --- tests guile's uniform arrays     -*- scheme -*-
   2 ;;;;
   3 ;;;; Copyright 2004, 2006, 2009, 2010 Free Software Foundation, Inc.
   4 ;;;;
   5 ;;;; This library is free software; you can redistribute it and/or
   6 ;;;; modify it under the terms of the GNU Lesser General Public
   7 ;;;; License as published by the Free Software Foundation; either
   8 ;;;; version 3 of the License, or (at your option) any later version.
   9 ;;;;
  10 ;;;; This library is distributed in the hope that it will be useful,
  11 ;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 ;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 ;;;; Lesser General Public License for more details.
  14 ;;;;
  15 ;;;; You should have received a copy of the GNU Lesser General Public
  16 ;;;; License along with this library; if not, write to the Free Software
  17 ;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  18
  19 (define-module (test-suite test-arrays)
  20   #:use-module ((system base compile) #:select (compile))
  21   #:use-module (test-suite lib)
  22   #:use-module (srfi srfi-4)
  23   #:use-module (srfi srfi-4 gnu))
  24
  25 ;;;
  26 ;;; array?
  27 ;;;
  28
  29 (define exception:wrong-num-indices
  30   (cons 'misc-error "^wrong number of indices.*"))
  31
  32 (define exception:length-non-negative
  33   (cons 'read-error ".*array length must be non-negative.*"))
  34
  35
  36 (with-test-prefix "sanity"
  37   ;; At the current time of writing, bignums have a tc7 that is one bit
  38   ;; away from strings. It used to be that the vector implementation
  39   ;; registered for strings had the TYP7S mask, not the TYP7 mask,
  40   ;; making the system think that bignums were vectors. Doh!
  41   (pass-if (not (uniform-vector? 12345678901234567890123456789))))
  42
  43 (with-test-prefix "array?"
  44
  45   (let ((bool     (make-typed-array 'b    #t  '(5 6)))
  46         (char     (make-typed-array 'a    #\a '(5 6)))
  47         (byte     (make-typed-array 'u8   0   '(5 6)))
  48         (short    (make-typed-array 's16  0   '(5 6)))
  49         (ulong    (make-typed-array 'u32  0   '(5 6)))
  50         (long     (make-typed-array 's32  0   '(5 6)))
  51         (longlong (make-typed-array 's64  0   '(5 6)))
  52         (float    (make-typed-array 'f32  0   '(5 6)))
  53         (double   (make-typed-array 'f64  0   '(5 6)))
  54         (complex  (make-typed-array 'c64  0   '(5 6)))
  55         (scm      (make-typed-array #t    0   '(5 6))))
  56
  57     (with-test-prefix "is bool"
  58       (pass-if (eq? #t (typed-array? bool     'b)))
  59       (pass-if (eq? #f (typed-array? char     'b)))
  60       (pass-if (eq? #f (typed-array? byte     'b)))
  61       (pass-if (eq? #f (typed-array? short    'b)))
  62       (pass-if (eq? #f (typed-array? ulong    'b)))
  63       (pass-if (eq? #f (typed-array? long     'b)))
  64       (pass-if (eq? #f (typed-array? longlong 'b)))
  65       (pass-if (eq? #f (typed-array? float    'b)))
  66       (pass-if (eq? #f (typed-array? double   'b)))
  67       (pass-if (eq? #f (typed-array? complex  'b)))
  68       (pass-if (eq? #f (typed-array? scm      'b))))
  69
  70     (with-test-prefix "is char"
  71       (pass-if (eq? #f (typed-array? bool     'a)))
  72       (pass-if (eq? #t (typed-array? char     'a)))
  73       (pass-if (eq? #f (typed-array? byte     'a)))
  74       (pass-if (eq? #f (typed-array? short    'a)))
  75       (pass-if (eq? #f (typed-array? ulong    'a)))
  76       (pass-if (eq? #f (typed-array? long     'a)))
  77       (pass-if (eq? #f (typed-array? longlong 'a)))
  78       (pass-if (eq? #f (typed-array? float    'a)))
  79       (pass-if (eq? #f (typed-array? double   'a)))
  80       (pass-if (eq? #f (typed-array? complex  'a)))
  81       (pass-if (eq? #f (typed-array? scm      'a))))
  82
  83     (with-test-prefix "is byte"
  84       (pass-if (eq? #f (typed-array? bool     'u8)))
  85       (pass-if (eq? #f (typed-array? char     'u8)))
  86       (pass-if (eq? #t (typed-array? byte     'u8)))
  87       (pass-if (eq? #f (typed-array? short    'u8)))
  88       (pass-if (eq? #f (typed-array? ulong    'u8)))
  89       (pass-if (eq? #f (typed-array? long     'u8)))
  90       (pass-if (eq? #f (typed-array? longlong 'u8)))
  91       (pass-if (eq? #f (typed-array? float    'u8)))
  92       (pass-if (eq? #f (typed-array? double   'u8)))
  93       (pass-if (eq? #f (typed-array? complex  'u8)))
  94       (pass-if (eq? #f (typed-array? scm      'u8))))
  95
  96     (with-test-prefix "is short"
  97       (pass-if (eq? #f (typed-array? bool     's16)))
  98       (pass-if (eq? #f (typed-array? char     's16)))
  99       (pass-if (eq? #f (typed-array? byte     's16)))
 100       (pass-if (eq? #t (typed-array? short    's16)))
 101       (pass-if (eq? #f (typed-array? ulong    's16)))
 102       (pass-if (eq? #f (typed-array? long     's16)))
 103       (pass-if (eq? #f (typed-array? longlong 's16)))
 104       (pass-if (eq? #f (typed-array? float    's16)))
 105       (pass-if (eq? #f (typed-array? double   's16)))
 106       (pass-if (eq? #f (typed-array? complex  's16)))
 107       (pass-if (eq? #f (typed-array? scm      's16))))
 108
 109     (with-test-prefix "is ulong"
 110       (pass-if (eq? #f (typed-array? bool     'u32)))
 111       (pass-if (eq? #f (typed-array? char     'u32)))
 112       (pass-if (eq? #f (typed-array? byte     'u32)))
 113       (pass-if (eq? #f (typed-array? short    'u32)))
 114       (pass-if (eq? #t (typed-array? ulong    'u32)))
 115       (pass-if (eq? #f (typed-array? long     'u32)))
 116       (pass-if (eq? #f (typed-array? longlong 'u32)))
 117       (pass-if (eq? #f (typed-array? float    'u32)))
 118       (pass-if (eq? #f (typed-array? double   'u32)))
 119       (pass-if (eq? #f (typed-array? complex  'u32)))
 120       (pass-if (eq? #f (typed-array? scm      'u32))))
 121
 122     (with-test-prefix "is long"
 123       (pass-if (eq? #f (typed-array? bool     's32)))
 124       (pass-if (eq? #f (typed-array? char     's32)))
 125       (pass-if (eq? #f (typed-array? byte     's32)))
 126       (pass-if (eq? #f (typed-array? short    's32)))
 127       (pass-if (eq? #f (typed-array? ulong    's32)))
 128       (pass-if (eq? #t (typed-array? long     's32)))
 129       (pass-if (eq? #f (typed-array? longlong 's32)))
 130       (pass-if (eq? #f (typed-array? float    's32)))
 131       (pass-if (eq? #f (typed-array? double   's32)))
 132       (pass-if (eq? #f (typed-array? complex  's32)))
 133       (pass-if (eq? #f (typed-array? scm      's32))))
 134
 135     (with-test-prefix "is long long"
 136       (pass-if (eq? #f (typed-array? bool     's64)))
 137       (pass-if (eq? #f (typed-array? char     's64)))
 138       (pass-if (eq? #f (typed-array? byte     's64)))
 139       (pass-if (eq? #f (typed-array? short    's64)))
 140       (pass-if (eq? #f (typed-array? ulong    's64)))
 141       (pass-if (eq? #f (typed-array? long     's64)))
 142       (pass-if (eq? #t (typed-array? longlong 's64)))
 143       (pass-if (eq? #f (typed-array? float    's64)))
 144       (pass-if (eq? #f (typed-array? double   's64)))
 145       (pass-if (eq? #f (typed-array? complex  's64)))
 146       (pass-if (eq? #f (typed-array? scm      's64))))
 147
 148     (with-test-prefix "is float"
 149       (pass-if (eq? #f (typed-array? bool     'f32)))
 150       (pass-if (eq? #f (typed-array? char     'f32)))
 151       (pass-if (eq? #f (typed-array? byte     'f32)))
 152       (pass-if (eq? #f (typed-array? short    'f32)))
 153       (pass-if (eq? #f (typed-array? ulong    'f32)))
 154       (pass-if (eq? #f (typed-array? long     'f32)))
 155       (pass-if (eq? #f (typed-array? longlong 'f32)))
 156       (pass-if (eq? #t (typed-array? float    'f32)))
 157       (pass-if (eq? #f (typed-array? double   'f32)))
 158       (pass-if (eq? #f (typed-array? complex  'f32)))
 159       (pass-if (eq? #f (typed-array? scm      'f32))))
 160
 161     (with-test-prefix "is double"
 162       (pass-if (eq? #f (typed-array? bool     'f64)))
 163       (pass-if (eq? #f (typed-array? char     'f64)))
 164       (pass-if (eq? #f (typed-array? byte     'f64)))
 165       (pass-if (eq? #f (typed-array? short    'f64)))
 166       (pass-if (eq? #f (typed-array? ulong    'f64)))
 167       (pass-if (eq? #f (typed-array? long     'f64)))
 168       (pass-if (eq? #f (typed-array? longlong 'f64)))
 169       (pass-if (eq? #f (typed-array? float    'f64)))
 170       (pass-if (eq? #t (typed-array? double   'f64)))
 171       (pass-if (eq? #f (typed-array? complex  'f64)))
 172       (pass-if (eq? #f (typed-array? scm      'f64))))
 173
 174     (with-test-prefix "is complex"
 175       (pass-if (eq? #f (typed-array? bool     'c64)))
 176       (pass-if (eq? #f (typed-array? char     'c64)))
 177       (pass-if (eq? #f (typed-array? byte     'c64)))
 178       (pass-if (eq? #f (typed-array? short    'c64)))
 179       (pass-if (eq? #f (typed-array? ulong    'c64)))
 180       (pass-if (eq? #f (typed-array? long     'c64)))
 181       (pass-if (eq? #f (typed-array? longlong 'c64)))
 182       (pass-if (eq? #f (typed-array? float    'c64)))
 183       (pass-if (eq? #f (typed-array? double   'c64)))
 184       (pass-if (eq? #t (typed-array? complex  'c64)))
 185       (pass-if (eq? #f (typed-array? scm      'c64))))
 186
 187     (with-test-prefix "is scm"
 188       (pass-if (eq? #f (typed-array? bool     #t)))
 189       (pass-if (eq? #f (typed-array? char     #t)))
 190       (pass-if (eq? #f (typed-array? byte     #t)))
 191       (pass-if (eq? #f (typed-array? short    #t)))
 192       (pass-if (eq? #f (typed-array? ulong    #t)))
 193       (pass-if (eq? #f (typed-array? long     #t)))
 194       (pass-if (eq? #f (typed-array? longlong #t)))
 195       (pass-if (eq? #f (typed-array? float    #t)))
 196       (pass-if (eq? #f (typed-array? double   #t)))
 197       (pass-if (eq? #f (typed-array? complex  #t)))
 198       (pass-if (eq? #t (typed-array? scm      #t))))))
 199
 200 ;;;
 201 ;;; array-equal?
 202 ;;;
 203
 204 (with-test-prefix "array-equal?"
 205
 206   (pass-if "#s16(...)"
 207     (array-equal? #s16(1 2 3) #s16(1 2 3))))
 208
 209 ;;;
 210 ;;; array->list
 211 ;;;
 212
 213 (with-test-prefix "array->list"
 214   (pass-if (equal? (array->list #s16(1 2 3)) '(1 2 3)))
 215   (pass-if (equal? (array->list #(1 2 3)) '(1 2 3)))
 216   (pass-if (equal? (array->list #2((1 2) (3 4) (5 6))) '((1 2) (3 4) (5 6))))
 217   (pass-if (equal? (array->list #()) '())))
 218
 219
 220 ;;;
 221 ;;; array-fill!
 222 ;;;
 223
 224 (with-test-prefix "array-fill!"
 225
 226   (with-test-prefix "bool"
 227     (let ((a (make-bitvector 1 #t)))
 228       (pass-if "#f" (array-fill! a #f) #t)
 229       (pass-if "#t" (array-fill! a #t) #t)))
 230
 231   (with-test-prefix "char"
 232     (let ((a (make-string 1 #\a)))
 233       (pass-if "x" (array-fill! a #\x) #t)))
 234
 235   (with-test-prefix "byte"
 236     (let ((a (make-s8vector 1 0)))
 237       (pass-if "0"    (array-fill! a 0)    #t)
 238       (pass-if "127" (array-fill! a 127)   #t)
 239       (pass-if "-128" (array-fill! a -128) #t)
 240       (pass-if-exception "128" exception:out-of-range
 241         (array-fill! a 128))
 242       (pass-if-exception "-129" exception:out-of-range
 243         (array-fill! a -129))
 244       (pass-if-exception "symbol" exception:wrong-type-arg
 245         (array-fill! a 'symbol))))
 246
 247   (with-test-prefix "short"
 248     (let ((a (make-s16vector 1 0)))
 249       (pass-if "0"    (array-fill! a 0)    #t)
 250       (pass-if "123"  (array-fill! a 123)  #t)
 251       (pass-if "-123" (array-fill! a -123) #t)))
 252
 253   (with-test-prefix "ulong"
 254     (let ((a (make-u32vector 1 1)))
 255       (pass-if "0"    (array-fill! a 0)   #t)
 256       (pass-if "123"  (array-fill! a 123) #t)
 257       (pass-if-exception "-123" exception:out-of-range
 258         (array-fill! a -123) #t)))
 259
 260   (with-test-prefix "long"
 261     (let ((a (make-s32vector 1 -1)))
 262       (pass-if "0"    (array-fill! a 0)    #t)
 263       (pass-if "123"  (array-fill! a 123)  #t)
 264       (pass-if "-123" (array-fill! a -123) #t)))
 265
 266   (with-test-prefix "float"
 267     (let ((a (make-f32vector 1 1.0)))
 268       (pass-if "0.0"    (array-fill! a 0)      #t)
 269       (pass-if "123.0"  (array-fill! a 123.0)  #t)
 270       (pass-if "-123.0" (array-fill! a -123.0) #t)
 271       (pass-if "0"      (array-fill! a 0)      #t)
 272       (pass-if "123"    (array-fill! a 123)    #t)
 273       (pass-if "-123"   (array-fill! a -123)   #t)
 274       (pass-if "5/8"    (array-fill! a 5/8)    #t)))
 275
 276   (with-test-prefix "double"
 277     (let ((a (make-f64vector 1 1/3)))
 278       (pass-if "0.0"    (array-fill! a 0)      #t)
 279       (pass-if "123.0"  (array-fill! a 123.0)  #t)
 280       (pass-if "-123.0" (array-fill! a -123.0) #t)
 281       (pass-if "0"      (array-fill! a 0)      #t)
 282       (pass-if "123"    (array-fill! a 123)    #t)
 283       (pass-if "-123"   (array-fill! a -123)   #t)
 284       (pass-if "5/8"    (array-fill! a 5/8)    #t))))
 285
 286 ;;;
 287 ;;; array-in-bounds?
 288 ;;;
 289
 290 (with-test-prefix "array-in-bounds?"
 291
 292   (pass-if (let ((a (make-array #f '(425 425))))
 293              (eq? #f (array-in-bounds? a 0)))))
 294
 295 ;;;
 296 ;;; array-prototype
 297 ;;;
 298
 299 (with-test-prefix "array-type"
 300
 301   (with-test-prefix "on make-foo-vector"
 302
 303     (pass-if "bool"
 304       (eq? 'b (array-type (make-bitvector 1))))
 305
 306     (pass-if "char"
 307       (eq? 'a (array-type (make-string 1))))
 308
 309     (pass-if "byte"
 310       (eq? 'u8 (array-type (make-u8vector 1))))
 311
 312     (pass-if "short"
 313       (eq? 's16 (array-type (make-s16vector 1))))
 314
 315     (pass-if "ulong"
 316       (eq? 'u32 (array-type (make-u32vector 1))))
 317
 318     (pass-if "long"
 319       (eq? 's32 (array-type (make-s32vector 1))))
 320
 321     (pass-if "long long"
 322       (eq? 's64 (array-type (make-s64vector 1))))
 323
 324     (pass-if "float"
 325       (eq? 'f32 (array-type (make-f32vector 1))))
 326
 327     (pass-if "double"
 328       (eq? 'f64 (array-type (make-f64vector 1))))
 329
 330     (pass-if "complex"
 331       (eq? 'c64 (array-type (make-c64vector 1))))
 332
 333     (pass-if "scm"
 334       (eq? #t (array-type (make-vector 1)))))
 335
 336   (with-test-prefix "on make-typed-array"
 337
 338     (let ((types '(b a u8 s8 u16 s16 u32 s32 u64 u64 f32 f64 c32 c64)))
 339       (for-each (lambda (type)
 340                   (pass-if (symbol->string type)
 341                      (eq? type
 342                           (array-type (make-typed-array type
 343                                                         *unspecified*
 344                                                         '(5 6))))))
 345                 types))))
 346
 347 ;;;
 348 ;;; array-set!
 349 ;;;
 350
 351 (with-test-prefix "array-set!"
 352
 353   (with-test-prefix "bitvector"
 354
 355     ;; in Guile 1.8.0 a bug in bitvector_set() caused a segv in array-set!
 356     ;; on a bitvector like the following
 357     (let ((a (make-bitvector 1)))
 358       (pass-if "one elem set #t"
 359         (begin
 360           (array-set! a #t 0)
 361           (eq? #t (array-ref a 0))))
 362       (pass-if "one elem set #f"
 363         (begin
 364           (array-set! a #f 0)
 365           (eq? #f (array-ref a 0))))))
 366
 367   (with-test-prefix "byte"
 368
 369     (let ((a (make-s8vector 1)))
 370
 371       (pass-if "-128"
 372         (begin (array-set! a -128 0) #t))
 373       (pass-if "0"
 374         (begin (array-set! a 0 0) #t))
 375       (pass-if "127"
 376         (begin (array-set! a 127 0) #t))
 377       (pass-if-exception "-129" exception:out-of-range
 378         (begin (array-set! a -129 0) #t))
 379       (pass-if-exception "128" exception:out-of-range
 380         (begin (array-set! a 128 0) #t))))
 381
 382   (with-test-prefix "short"
 383
 384     (let ((a (make-s16vector 1)))
 385       ;; true if n can be array-set! into a
 386       (define (fits? n)
 387         (false-if-exception (begin (array-set! a n 0) #t)))
 388
 389       (with-test-prefix "store/fetch"
 390         ;; Check array-ref gives back what was put with array-set!.
 391         ;; In Guile 1.6.4 and earlier, array-set! only demanded an inum and
 392         ;; would silently truncate to a short.
 393
 394         (do ((n 1 (1+ (* 2 n))))  ;; n=2^k-1
 395             ((not (fits? n)))
 396           (array-set! a n 0)
 397           (pass-if n
 398             (= n (array-ref a 0))))
 399
 400         (do ((n -1 (* 2 n)))      ;; -n=2^k
 401             ((not (fits? n)))
 402           (array-set! a n 0)
 403           (pass-if n
 404             (= n (array-ref a 0))))))))
 405
 406 ;;;
 407 ;;; array-set!
 408 ;;;
 409
 410 (with-test-prefix "array-set!"
 411
 412   (with-test-prefix "one dim"
 413     (let ((a (make-array #f '(3 5))))
 414       (pass-if "start"
 415         (array-set! a 'y 3)
 416         #t)
 417       (pass-if "end"
 418         (array-set! a 'y 5)
 419         #t)
 420       (pass-if-exception "start-1" exception:out-of-range
 421         (array-set! a 'y 2))
 422       (pass-if-exception "end+1" exception:out-of-range
 423         (array-set! a 'y 6))
 424       (pass-if-exception "two indexes" exception:out-of-range
 425         (array-set! a 'y 6 7))))
 426
 427   (with-test-prefix "two dim"
 428     (let ((a (make-array #f '(3 5) '(7 9))))
 429       (pass-if "start"
 430         (array-set! a 'y 3 7)
 431         #t)
 432       (pass-if "end"
 433         (array-set! a 'y 5 9)
 434         #t)
 435       (pass-if-exception "start i-1" exception:out-of-range
 436         (array-set! a 'y 2 7))
 437       (pass-if-exception "end i+1" exception:out-of-range
 438         (array-set! a 'y 6 9))
 439       (pass-if-exception "one index" exception:wrong-num-indices
 440         (array-set! a 'y 4))
 441       (pass-if-exception "three indexes" exception:wrong-num-indices
 442         (array-set! a 'y 4 8 0)))))
 443
 444 ;;;
 445 ;;; make-shared-array
 446 ;;;
 447
 448 (define exception:mapping-out-of-range
 449   (cons 'misc-error "^mapping out of range"))  ;; per scm_make_shared_array
 450
 451 (with-test-prefix "make-shared-array"
 452
 453   ;; this failed in guile 1.8.0
 454   (pass-if "vector unchanged"
 455     (let* ((a (make-array #f '(0 7)))
 456            (s (make-shared-array a list '(0 7))))
 457       (array-equal? a s)))
 458
 459   (pass-if-exception "vector, high too big" exception:mapping-out-of-range
 460     (let* ((a (make-array #f '(0 7))))
 461       (make-shared-array a list '(0 8))))
 462
 463   (pass-if-exception "vector, low too big" exception:out-of-range
 464     (let* ((a (make-array #f '(0 7))))
 465       (make-shared-array a list '(-1 7))))
 466
 467   (pass-if "truncate columns"
 468     (array-equal? (make-shared-array #2((a b c) (d e f) (g h i)) list 3 2)
 469                   #2((a b) (d e) (g h))))
 470
 471   (pass-if "pick one column"
 472     (array-equal? (make-shared-array #2((a b c) (d e f) (g h i))
 473                                      (lambda (i) (list i 2))
 474                                      '(0 2))
 475                   #(c f i)))
 476
 477   (pass-if "diagonal"
 478     (array-equal? (make-shared-array #2((a b c) (d e f) (g h i))
 479                                      (lambda (i) (list i i))
 480                                      '(0 2))
 481                   #(a e i)))
 482
 483   ;; this failed in guile 1.8.0
 484   (pass-if "2 dims from 1 dim"
 485     (array-equal? (make-shared-array #1(a b c d e f g h i j k l)
 486                                      (lambda (i j) (list (+ (* i 3) j)))
 487                                      4 3)
 488                   #2((a b c) (d e f) (g h i) (j k l))))
 489
 490   (pass-if "reverse columns"
 491     (array-equal? (make-shared-array #2((a b c) (d e f) (g h i))
 492                                      (lambda (i j) (list i (- 2 j)))
 493                                      3 3)
 494                   #2((c b a) (f e d) (i h g))))
 495
 496   (pass-if "fixed offset, 0 based becomes 1 based"
 497     (let* ((x #2((a b c) (d e f) (g h i)))
 498            (y (make-shared-array x
 499                                  (lambda (i j) (list (1- i) (1- j)))
 500                                  '(1 3) '(1 3))))
 501       (and (eq? (array-ref x 0 0) 'a)
 502            (eq? (array-ref y 1 1) 'a))))
 503
 504   ;; this failed in guile 1.8.0
 505   (pass-if "stride every third element"
 506     (array-equal? (make-shared-array #1(a b c d e f g h i j k l)
 507                                      (lambda (i) (list (* i 3)))
 508                                      4)
 509                   #1(a d g j)))
 510
 511   (pass-if "shared of shared"
 512     (let* ((a  #2((1 2 3) (4 5 6) (7 8 9)))
 513            (s1 (make-shared-array a (lambda (i) (list i 1)) 3))
 514            (s2 (make-shared-array s1 list '(1 2))))
 515       (and (eqv? 5 (array-ref s2 1))
 516            (eqv? 8 (array-ref s2 2))))))
 517
 518 ;;;
 519 ;;; uniform-vector-ref
 520 ;;;
 521
 522 (with-test-prefix "uniform-vector-ref"
 523
 524   (with-test-prefix "byte"
 525
 526     (let ((a (make-s8vector 1)))
 527
 528       (pass-if "0"
 529         (begin
 530           (array-set! a 0 0)
 531           (= 0 (uniform-vector-ref a 0))))
 532       (pass-if "127"
 533         (begin
 534           (array-set! a 127 0)
 535           (= 127 (uniform-vector-ref a 0))))
 536       (pass-if "-128"
 537         (begin
 538           (array-set! a -128 0)
 539           (= -128 (uniform-vector-ref a 0)))))))
 540
 541 ;;;
 542 ;;; syntax
 543 ;;;
 544
 545 (with-test-prefix "syntax"
 546
 547   (pass-if "rank and lower bounds"
 548     ;; uniform u32 array of rank 2 with index ranges 2..3 and 7..8.
 549     (let ((a '#2u32@2@7((1 2) (3 4))))
 550       (and (array? a)
 551            (typed-array? a 'u32)
 552            (= (array-rank a) 2)
 553            (let loop ((bounds '((2 7) (2 8) (3 7) (3 8)))
 554                       (result #t))
 555              (if (null? bounds)
 556                  result
 557                  (and result
 558                       (loop (cdr bounds)
 559                             (apply array-in-bounds? a (car bounds)))))))))
 560
 561   (pass-if "negative lower bound"
 562      (let ((a '#1@-3(a b)))
 563        (and (array? a)
 564             (= (array-rank a) 1)
 565             (array-in-bounds? a -3) (array-in-bounds? a -2)
 566             (eq? 'a (array-ref a -3))
 567             (eq? 'b (array-ref a -2)))))
 568
 569   (pass-if-exception "negative length" exception:length-non-negative
 570      (with-input-from-string "'#1:-3(#t #t)" read))
 571
 572   (pass-if "bitvector is self-evaluating"
 573      (equal? (compile (bitvector)) (bitvector))))
 574
 575 ;;;
 576 ;;; equal? with vector and one-dimensional array
 577 ;;;
 578
 579 (with-test-prefix "equal?"
 580   (pass-if "array and non-array"
 581     (not (equal? #2f64((0 1) (2 3)) 100)))
 582
 583   (pass-if "empty vectors of different types"
 584     (not (equal? #s32() #f64())))
 585
 586   (pass-if "empty arrays of different types"
 587     (not (equal? #2s32() #2f64())))
 588
 589   (pass-if "empty arrays of the same type"
 590     (equal? #s32() #s32()))
 591
 592   (pass-if "identical uniform vectors of the same type"
 593     (equal? #s32(1) #s32(1)))
 594
 595   (pass-if "nonidentical uniform vectors of the same type"
 596     (not (equal? #s32(1) #s32(-1))))
 597
 598   (pass-if "identical uniform vectors of different types"
 599     (not (equal? #s32(1) #s64(1))))
 600
 601   (pass-if "nonidentical uniform vectors of different types"
 602     (not (equal? #s32(1) #s64(-1))))
 603
 604   (pass-if "vector and one-dimensional array"
 605     (equal? (make-shared-array #2((a b c) (d e f) (g h i))
 606                                (lambda (i) (list i i))
 607                                '(0 2))
 608             #(a e i))))