guile/test-suite/tests/r6rs-arithmetic-bitwise.test

;;; arithmetic-bitwise.test --- Test suite for R6RS (rnrs arithmetic bitwise)

;;      Copyright (C) 2010, 2013 Free Software Foundation, Inc.
;;
;; This library is free software; you can redistribute it and/or
;; modify it under the terms of the GNU Lesser General Public
;; License as published by the Free Software Foundation; either
;; version 3 of the License, or (at your option) any later version.
;; 
;; This library 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
;; Lesser General Public License for more details.
;; 
;; You should have received a copy of the GNU Lesser General Public
;; License along with this library; if not, write to the Free Software
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA


(define-module (test-suite test-r6rs-arithmetic-bitwise)
  :use-module ((rnrs arithmetic bitwise) :version (6))
  :use-module (test-suite lib))

(with-test-prefix "bitwise-not"
  (pass-if "bitwise-not simple"
    (eqv? (bitwise-not 3) -4)))

(with-test-prefix "bitwise-and"
  (pass-if "bitwise-and simple"
    (eqv? (bitwise-and #b101 #b110) #b100)))

(with-test-prefix "bitwise-ior"
  (pass-if "bitwise-ior simple"
    (eqv? (bitwise-ior #b010 #b100) #b110)))

(with-test-prefix "bitwise-xor"
  (pass-if "bitwise-xor simple"
    (eqv? (bitwise-xor #b101 #b100) #b001)))

(with-test-prefix "bitwise-if"
  (pass-if "bitwise-if simple"
    (eqv? (bitwise-if #b101 #b011 #b100) #b001)))

(with-test-prefix "bitwise-bit-count"
  (pass-if "bitwise-bit-count simple"
    (eqv? (bitwise-bit-count #b101) 2))
  (pass-if "bitwise-bit-count negative"
    (eqv? (bitwise-bit-count #b-101) -2)))

(with-test-prefix "bitwise-length"
  (pass-if "bitwise-length simple"
    (eqv? (bitwise-length #b101) 3))
  (pass-if "bitwise-length leading zeros"
    (eqv? (bitwise-length #b001) 1)))

(with-test-prefix "bitwise-first-bit-set"
  (pass-if "bitwise-first-bit-set simple"
    (and (eqv? (bitwise-first-bit-set 1) 0)
         (eqv? (bitwise-first-bit-set -4) 2)))
  (pass-if "bitwise-first-bit-set zero"
    (and (eqv? (bitwise-first-bit-set 0) -1))))

(with-test-prefix "bitwise-copy-bit"
  (pass-if "bitwise-copy-bit simple"
    (eqv? (bitwise-copy-bit #b010 2 1) #b110)))

(with-test-prefix "bitwise-bit-field"
  (pass-if "bitwise-bit-field simple"
    (eqv? (bitwise-bit-field #b110010 1 4) #b001)))

(with-test-prefix "bitwise-copy-bit-field"
  (pass-if "bitwise-copy-bit-field simple"
    (eqv? (bitwise-copy-bit-field #b11111111 2 6 #b1010) #b11101011)))

(with-test-prefix "bitwise-arithmetic-shift"
  (pass-if "bitwise-arithmetic-shift simple"
    (and (eqv? (bitwise-arithmetic-shift -6 -1) -3)
         (eqv? (bitwise-arithmetic-shift -5 -1) -3)
	 (eqv? (bitwise-arithmetic-shift -4 -1) -2)
	 (eqv? (bitwise-arithmetic-shift -3 -1) -2)
	 (eqv? (bitwise-arithmetic-shift -2 -1) -1)
	 (eqv? (bitwise-arithmetic-shift -1 -1) -1))))

(with-test-prefix "bitwise-arithmetic-shift-left"
  (pass-if "bitwise-arithmetic-shift-left simple"
    (eqv? (bitwise-arithmetic-shift-left -6 -1) -3)))

(with-test-prefix "bitwise-arithmetic-shift-right"
  (pass-if "bitwise-arithmetic-shift-right simple"
    (eqv? (bitwise-arithmetic-shift-right -6 1) -3)))

(with-test-prefix "bitwise-rotate-bit-field"
  (pass-if "bitwise-rotate-bit-field simple"
    (eqv? (bitwise-rotate-bit-field #b11100011 2 6 2) #b11001011)))

(with-test-prefix "bitwise-reverse-bit-field"
  (pass-if "bitwise-reverse-bit-field simple"
    (eqv? (bitwise-reverse-bit-field #b1010010 1 4) #b1011000)))