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* Added tests for bit-operations.

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Dirk Herrmann 2001-01-17 18:22:26 +00:00
parent ac0c002c62
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@ -1,3 +1,7 @@
2001-01-17 Dirk Herrmann <D.Herrmann@tu-bs.de>
* tests/bit-operations.test: Added.
2000-11-03 Dirk Herrmann <D.Herrmann@tu-bs.de>
* tests/gc.test: Added.

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test-suite/tests/bit-operations.test Normal file
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;;;; bit-operations.test --- bitwise operations on numbers -*- scheme -*-
;;;; Copyright (C) 2000 Free Software Foundation, Inc.
;;;;
;;;; This program is free software; you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
;;;; the Free Software Foundation; either version 2, or (at your option)
;;;; any later version.
;;;;
;;;; This program is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;;; GNU General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU General Public License
;;;; along with this software; see the file COPYING. If not, write to
;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
;;;; Boston, MA 02111-1307 USA
;;;;
;;;; As a special exception, the Free Software Foundation gives permission
;;;; for additional uses of the text contained in its release of GUILE.
;;;;
;;;; The exception is that, if you link the GUILE library with other files
;;;; to produce an executable, this does not by itself cause the
;;;; resulting executable to be covered by the GNU General Public License.
;;;; Your use of that executable is in no way restricted on account of
;;;; linking the GUILE library code into it.
;;;;
;;;; This exception does not however invalidate any other reasons why
;;;; the executable file might be covered by the GNU General Public License.
;;;;
;;;; This exception applies only to the code released by the
;;;; Free Software Foundation under the name GUILE. If you copy
;;;; code from other Free Software Foundation releases into a copy of
;;;; GUILE, as the General Public License permits, the exception does
;;;; not apply to the code that you add in this way. To avoid misleading
;;;; anyone as to the status of such modified files, you must delete
;;;; this exception notice from them.
;;;;
;;;; If you write modifications of your own for GUILE, it is your choice
;;;; whether to permit this exception to apply to your modifications.
;;;; If you do not wish that, delete this exception notice.
(use-modules (ice-9 documentation))
;;;
;;; miscellaneous
;;;
(define (run-tests name-proc test-proc arg-sets)
(for-each
(lambda (arg-set)
(pass-if (apply name-proc arg-set)
(apply test-proc arg-set)))
arg-sets))
(define (documented? object)
(object-documentation object))
(define fixnum-bit 30)
(define fixnum-min most-negative-fixnum)
(define fixnum-max most-positive-fixnum)
(with-test-prefix "bit-extract"
(pass-if "documented?"
(documented? bit-extract))
(with-test-prefix "extract from zero"
(run-tests
(lambda (a b c d)
(string-append "single bit " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list 0 0 1 0)
(list 0 1 2 0)
(list 0 (+ fixnum-bit -2) (+ fixnum-bit -1) 0)
(list 0 (+ fixnum-bit -1) (+ fixnum-bit 0) 0)
(list 0 (+ fixnum-bit 0) (+ fixnum-bit 1) 0)
(list 0 (+ fixnum-bit 1) (+ fixnum-bit 2) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit - 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list 0 0 (+ fixnum-bit -1) 0)
(list 0 1 (+ fixnum-bit 0) 0)
(list 0 2 (+ fixnum-bit 1) 0)
(list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 0)
(list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 0)
(list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0)
(list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list 0 0 (+ fixnum-bit 0) 0)
(list 0 1 (+ fixnum-bit 1) 0)
(list 0 2 (+ fixnum-bit 2) 0)
(list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 0)
(list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 0)
(list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0)
(list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit + 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list 0 0 (+ fixnum-bit 1) 0)
(list 0 1 (+ fixnum-bit 2) 0)
(list 0 2 (+ fixnum-bit 3) 0)
(list 0 (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 0)
(list 0 (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 0)
(list 0 (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0)
(list 0 (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0))))
(with-test-prefix "extract from fixnum-max"
(run-tests
(lambda (a b c d)
(string-append "single bit " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-max 0 1 1)
(list fixnum-max 1 2 1)
(list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit -1) 1)
(list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit 0) 0)
(list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit 1) 0)
(list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit 2) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit - 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-max 0 (+ fixnum-bit -1) (ash fixnum-max 0))
(list fixnum-max 1 (+ fixnum-bit 0) (ash fixnum-max -1))
(list fixnum-max 2 (+ fixnum-bit 1) (ash fixnum-max -2))
(list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 1)
(list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 0)
(list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0)
(list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-max 0 (+ fixnum-bit 0) (ash fixnum-max 0))
(list fixnum-max 1 (+ fixnum-bit 1) (ash fixnum-max -1))
(list fixnum-max 2 (+ fixnum-bit 2) (ash fixnum-max -2))
(list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 1)
(list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 0)
(list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0)
(list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit + 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-max 0 (+ fixnum-bit 1) (ash fixnum-max 0))
(list fixnum-max 1 (+ fixnum-bit 2) (ash fixnum-max -1))
(list fixnum-max 2 (+ fixnum-bit 3) (ash fixnum-max -2))
(list fixnum-max (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 1)
(list fixnum-max (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 0)
(list fixnum-max (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0)
(list fixnum-max (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0))))
(with-test-prefix "extract from fixnum-max + 1"
(run-tests
(lambda (a b c d)
(string-append "single bit " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (+ fixnum-max 1) 0 1 0)
(list (+ fixnum-max 1) 1 2 0)
(list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit -1) 0)
(list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit 0) 1)
(list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit 1) 0)
(list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit 2) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit - 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (+ fixnum-max 1) 0 (+ fixnum-bit -1) (ash 0 (- fixnum-bit 1)))
(list (+ fixnum-max 1) 1 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 2)))
(list (+ fixnum-max 1) 2 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 3)))
(list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) 2)
(list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) 1)
(list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) 0)
(list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (+ fixnum-max 1) 0 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 1)))
(list (+ fixnum-max 1) 1 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 2)))
(list (+ fixnum-max 1) 2 (+ fixnum-bit 2) (ash 1 (- fixnum-bit 3)))
(list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) 2)
(list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) 1)
(list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) 0)
(list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) 0)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit + 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (+ fixnum-max 1) 0 (+ fixnum-bit 1) (ash 1 (- fixnum-bit 1)))
(list (+ fixnum-max 1) 1 (+ fixnum-bit 2) (ash 1 (- fixnum-bit 2)))
(list (+ fixnum-max 1) 2 (+ fixnum-bit 3) (ash 1 (- fixnum-bit 3)))
(list (+ fixnum-max 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) 2)
(list (+ fixnum-max 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) 1)
(list (+ fixnum-max 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) 0)
(list (+ fixnum-max 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) 0))))
(with-test-prefix "extract from fixnum-min"
(run-tests
(lambda (a b c d)
(string-append "single bit " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-min 0 1 0)
(list fixnum-min 1 2 0)
(list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit -1) 0)
(list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit 0) 1)
(list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit 1) 1)
(list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit 2) 1)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit - 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-min 0 (+ fixnum-bit -1) (ash 0 (- fixnum-bit 1)))
(list fixnum-min 1 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 2)))
(list fixnum-min 2 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 3)))
(list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) (- (ash 1 (- fixnum-bit 1)) 2))
(list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) (- (ash 1 (- fixnum-bit 1)) 1))
(list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) (- (ash 1 (- fixnum-bit 1)) 1))
(list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) (- (ash 1 (- fixnum-bit 1)) 1))))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-min 0 (+ fixnum-bit 0) (ash 1 (- fixnum-bit 1)))
(list fixnum-min 1 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 2)))
(list fixnum-min 2 (+ fixnum-bit 2) (ash 7 (- fixnum-bit 3)))
(list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) (- (ash 1 fixnum-bit) 2))
(list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) (- (ash 1 fixnum-bit) 1))
(list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) (- (ash 1 fixnum-bit) 1))
(list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) (- (ash 1 fixnum-bit) 1))))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit + 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list fixnum-min 0 (+ fixnum-bit 1) (ash 3 (- fixnum-bit 1)))
(list fixnum-min 1 (+ fixnum-bit 2) (ash 7 (- fixnum-bit 2)))
(list fixnum-min 2 (+ fixnum-bit 3) (ash 15 (- fixnum-bit 3)))
(list fixnum-min (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) (- (ash 1 (+ fixnum-bit 1)) 2))
(list fixnum-min (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) (- (ash 1 (+ fixnum-bit 1)) 1))
(list fixnum-min (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) (- (ash 1 (+ fixnum-bit 1)) 1))
(list fixnum-min (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) (- (ash 1 (+ fixnum-bit 1)) 1)))))
(with-test-prefix "extract from fixnum-min - 1"
(run-tests
(lambda (a b c d)
(string-append "single bit " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (- fixnum-min 1) 0 1 1)
(list (- fixnum-min 1) 1 2 1)
(list (- fixnum-min 1) (+ fixnum-bit -2) (+ fixnum-bit -1) 1)
(list (- fixnum-min 1) (+ fixnum-bit -1) (+ fixnum-bit 0) 0)
(list (- fixnum-min 1) (+ fixnum-bit 0) (+ fixnum-bit 1) 1)
(list (- fixnum-min 1) (+ fixnum-bit 1) (+ fixnum-bit 2) 1)))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit - 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (- fixnum-min 1) 0 (+ fixnum-bit -1) (- (ash 1 (- fixnum-bit 1)) 1 (ash 0 (- fixnum-bit 1))))
(list (- fixnum-min 1) 1 (+ fixnum-bit 0) (- (ash 1 (- fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 2))))
(list (- fixnum-min 1) 2 (+ fixnum-bit 1) (- (ash 1 (- fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 3))))
(list (- fixnum-min 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -3) (- (ash 1 (- fixnum-bit 1)) 3))
(list (- fixnum-min 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -2) (- (ash 1 (- fixnum-bit 1)) 2))
(list (- fixnum-min 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit -1) (- (ash 1 (- fixnum-bit 1)) 1))
(list (- fixnum-min 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 0) (- (ash 1 (- fixnum-bit 1)) 1))))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (- fixnum-min 1) 0 (+ fixnum-bit 0) (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 1))))
(list (- fixnum-min 1) 1 (+ fixnum-bit 1) (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 2))))
(list (- fixnum-min 1) 2 (+ fixnum-bit 2) (- (ash 1 fixnum-bit) 1 (ash 1 (- fixnum-bit 3))))
(list (- fixnum-min 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -2) (- (ash 1 fixnum-bit) 3))
(list (- fixnum-min 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit -1) (- (ash 1 fixnum-bit) 2))
(list (- fixnum-min 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 0) (- (ash 1 fixnum-bit) 1))
(list (- fixnum-min 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 1) (- (ash 1 fixnum-bit) 1))))
(run-tests
(lambda (a b c d)
(string-append "fixnum-bit + 1 bits starting at " (number->string b)))
(lambda (a b c d)
(= (bit-extract a b c) d))
(list
(list (- fixnum-min 1) 0 (+ fixnum-bit 1) (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 1))))
(list (- fixnum-min 1) 1 (+ fixnum-bit 2) (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 2))))
(list (- fixnum-min 1) 2 (+ fixnum-bit 3) (- (ash 1 (+ fixnum-bit 1)) 1 (ash 1 (- fixnum-bit 3))))
(list (- fixnum-min 1) (+ fixnum-bit -2) (+ fixnum-bit fixnum-bit -1) (- (ash 1 (+ fixnum-bit 1)) 3))
(list (- fixnum-min 1) (+ fixnum-bit -1) (+ fixnum-bit fixnum-bit 0) (- (ash 1 (+ fixnum-bit 1)) 2))
(list (- fixnum-min 1) (+ fixnum-bit 0) (+ fixnum-bit fixnum-bit 1) (- (ash 1 (+ fixnum-bit 1)) 1))
(list (- fixnum-min 1) (+ fixnum-bit 1) (+ fixnum-bit fixnum-bit 2) (- (ash 1 (+ fixnum-bit 1)) 1))))))