logandc1.lsp 1.94 KB
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;-*- Mode:     Lisp -*-
;;;; Author:   Paul Dietz
;;;; Created:  Mon Sep  8 21:47:22 2003
;;;; Contains: Tests of LOGANDC1

(in-package :cl-test)

(compile-and-load "numbers-aux.lsp")

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;;; Error tests

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(deftest logandc1.error.1
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  (check-type-error #'(lambda (x) (logandc1 x 0)) #'integerp)
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  nil)

(deftest logandc1.error.2
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  (check-type-error #'(lambda (x) (logandc1 0 x)) #'integerp)
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  nil)

(deftest logandc1.error.3
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  (signals-error (logandc1) program-error)
  t)
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(deftest logandc1.error.4
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  (signals-error (logandc1 0) program-error)
  t)
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(deftest logandc1.error.5
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  (signals-error (logandc1 1 2 3) program-error)
  t)

;;; Non-error tests
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(deftest logandc1.1
  (logandc1 0 0)
  0)

(deftest logandc1.2
  (logandc1 0 -1)
  -1)

(deftest logandc1.3
  (logandc1 0 123)
  123)

(deftest logandc1.4
  (loop for x in *integers*
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        always (and (eql x (logandc1 0 x))
                    (eql 0 (logandc1 x x))
                    (eql x (logandc1 (lognot x) x))
                    (eql (lognot x) (logandc1 x (lognot x)))))
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  t)

(deftest logandc1.5
  (loop for x = (random-fixnum)
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        for xc = (lognot x)
        repeat 1000
        unless (eql x (logandc1 xc x))
        collect x)
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  nil)

(deftest logandc1.6
  (loop for x = (random-from-interval (ash 1 (random 200)))
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        for y = (random-from-interval (ash 1 (random 200)))
        for z = (logandc1 x y)
        repeat 1000
        unless (and (if (and (>= x 0) (< y 0))
                        (< z 0)
                      (>= z 0))
                    (loop for i from 1 to 210
                          always (if (and (not (logbitp i x))
                                          (logbitp i y))
                                     (logbitp i z)
                                   (not (logbitp i z)))))
        collect (list x y z))
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  nil)

(deftest logandc1.order.1
  (let ((i 0) a b)
    (values
     (logandc1 (progn (setf a (incf i)) 0)
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               (progn (setf b (incf i)) -1))
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     i a b))
  -1 2 1 2)