tests/arith.impure.lisp

   1 ;;;; arithmetic tests with side effects
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (load "assertoid.lisp")
  15 (use-package "ASSERTOID")
  16
  17 (defmacro define-compiled-fun (fun name)
  18   `(progn
  19     (declaim (notinline ,name))
  20     (defun ,name (&rest args)
  21      (declare (optimize safety))
  22      (case (length args)
  23        (0 (,fun))
  24        (1 (,fun (car args)))
  25        (2 (,fun (car args) (cadr args)))
  26        (t (apply #',fun args))))))
  27
  28 (define-compiled-fun min compiled-min)
  29 (define-compiled-fun max compiled-max)
  30 (define-compiled-fun + compiled-+)
  31 (define-compiled-fun * compiled-*)
  32 (define-compiled-fun logand compiled-logand)
  33 (define-compiled-fun logior compiled-logior)
  34 (define-compiled-fun logxor compiled-logxor)
  35
  36 (assert (null (ignore-errors (compiled-min '(1 2 3)))))
  37 (assert (= (compiled-min -1) -1))
  38 (assert (null (ignore-errors (compiled-min 1 #(1 2 3)))))
  39 (assert (= (compiled-min 10 11) 10))
  40 (assert (null (ignore-errors (compiled-min (find-package "CL") -5.0))))
  41 (assert (= (compiled-min 5.0 -3) -3))
  42 (assert (null (ignore-errors (compiled-max #c(4 3)))))
  43 (assert (= (compiled-max 0) 0))
  44 (assert (null (ignore-errors (compiled-max "MIX" 3))))
  45 (assert (= (compiled-max -1 10.0) 10.0))
  46 (assert (null (ignore-errors (compiled-max 3 #'max))))
  47 (assert (= (compiled-max -3 0) 0))
  48
  49 (assert (null (ignore-errors (compiled-+ "foo"))))
  50 (assert (= (compiled-+ 3f0) 3f0))
  51 (assert (null (ignore-errors (compiled-+ 1 #p"tmp"))))
  52 (assert (= (compiled-+ 1 2) 3))
  53 (assert (null (ignore-errors (compiled-+ '(1 2 3) 3))))
  54 (assert (= (compiled-+ 3f0 4f0) 7f0))
  55 (assert (null (ignore-errors (compiled-* "foo"))))
  56 (assert (= (compiled-* 3f0) 3f0))
  57 (assert (null (ignore-errors (compiled-* 1 #p"tmp"))))
  58 (assert (= (compiled-* 1 2) 2))
  59 (assert (null (ignore-errors (compiled-* '(1 2 3) 3))))
  60 (assert (= (compiled-* 3f0 4f0) 12f0))
  61
  62 (assert (null (ignore-errors (compiled-logand #(1)))))
  63 (assert (= (compiled-logand 1) 1))
  64 (assert (null (ignore-errors (compiled-logior 3f0))))
  65 (assert (= (compiled-logior 4) 4))
  66 (assert (null (ignore-errors (compiled-logxor #c(2 3)))))
  67 (assert (= (compiled-logxor -6) -6))
  68
  69 (assert-error (coerce (expt 10 1000) 'single-float) type-error)
  70 \f
  71 (defun are-we-getting-ash-right (x y)
  72   (declare (optimize speed)
  73            (type (unsigned-byte 32) x)
  74            (type (integer -40 0) y))
  75   (ash x y))
  76 (defun what-about-with-constants (x)
  77   (declare (optimize speed) (type (unsigned-byte 32) x))
  78   (ash x -32))
  79
  80 (dotimes (i 41)
  81   (assert (= (are-we-getting-ash-right (1- (ash 1 32)) (- i))
  82              (if (< i 32)
  83                  (1- (ash 1 (- 32 i)))
  84                  0))))
  85 (assert (= (what-about-with-constants (1- (ash 1 32))) 0))
  86
  87 (defun one-more-test-case-to-catch-sparc (x y)
  88   (declare (optimize speed (safety 0))
  89            (type (unsigned-byte 32) x) (type (integer -40 2) y))
  90   (the (unsigned-byte 32) (ash x y)))
  91 (assert (= (one-more-test-case-to-catch-sparc (1- (ash 1 32)) -40) 0))
  92
  93
  94 (eval-when (:compile-toplevel :load-toplevel :execute)
  95   (defvar *n-fixnum-bits* (- sb-vm::n-word-bits sb-vm::n-fixnum-tag-bits))
  96   (defvar *shifts* (let ((list (list 0
  97                                      1
  98                                      (1- sb-vm::n-word-bits)
  99                                      sb-vm::n-word-bits
 100                                      (1+ sb-vm::n-word-bits))))
 101                      (append list (mapcar #'- list)))))
 102
 103 (macrolet ((nc-list ()
 104              `(list ,@(loop for i from 0 below (length *shifts*)
 105                          collect `(frob (nth ,i *shifts*)))))
 106            (c-list ()
 107              `(list ,@(loop for i from 0 below (length *shifts*)
 108                          collect `(frob ,(nth i *shifts*))))))
 109   (defun nc-ash (x)
 110     (macrolet ((frob (y)
 111                  `(list x ,y (ash x ,y))))
 112       (nc-list)))
 113   (defun c-ash (x)
 114     (macrolet ((frob (y)
 115                  `(list x ,y (ash x ,y))))
 116       (c-list)))
 117   (defun nc-modular-ash-ub (x)
 118     (macrolet ((frob (y)
 119                  `(list x ,y (logand most-positive-fixnum (ash x ,y)))))
 120       (nc-list)))
 121   (defun c-modular-ash-ub (x)
 122     (declare (type (and fixnum unsigned-byte) x)
 123              (optimize speed))
 124     (macrolet ((frob (y)
 125                  `(list x ,y (logand most-positive-fixnum (ash x ,y)))))
 126       (c-list))))
 127
 128 (let* ((values (list 0 1 most-positive-fixnum))
 129        (neg-values (cons most-negative-fixnum
 130                          (mapcar #'- values))))
 131   (labels ((test (value fun1 fun2)
 132              (let ((res1 (funcall fun1 value))
 133                    (res2 (funcall fun2 value)))
 134                (mapcar (lambda (a b)
 135                          (unless (equalp a b)
 136                            (error "ash failure for ~A vs ~A: ~A not EQUALP ~A"
 137                                   fun1 fun2
 138                                   a b)))
 139                        res1 res2))))
 140     (loop for x in values do
 141          (test x 'nc-ash 'c-ash)
 142          (test x 'nc-modular-ash-ub 'c-modular-ash-ub))
 143     (loop for x in neg-values do
 144          (test x 'nc-ash 'c-ash))))
 145
 146
 147 (defun 64-bit-logcount (x)
 148   (declare (optimize speed) (type (unsigned-byte 54) x))
 149   (logcount x))
 150 (assert (= (64-bit-logcount (1- (ash 1 24))) 24))
 151 (assert (= (64-bit-logcount (1- (ash 1 32))) 32))
 152 (assert (= (64-bit-logcount (1- (ash 1 48))) 48))
 153 (assert (= (64-bit-logcount (1- (ash 1 54))) 54))
 154 \f
 155 (declaim (inline ppc-ldb-2))
 156
 157 (defun ppc-ldb-2 (fun value)
 158   (declare (type stream socket)
 159            (type (signed-byte 32) value)
 160            (optimize (speed 3) (safety 0) (space 1) (debug 1)
 161                      (compilation-speed 0)))
 162   (funcall fun (ldb (byte 8 24) value))
 163   (funcall fun (ldb (byte 8 16) value))
 164   (funcall fun (ldb (byte 8 8) value))
 165   (funcall fun (ldb (byte 8 0) value))
 166   (values))
 167
 168 (defun ppc-ldb-1 (fun)
 169   (declare (optimize (speed 3) (safety 0) (space 1) (debug 1)
 170                      (compilation-speed 0)))
 171   (loop
 172      for param :across (make-array 1 :initial-element nil)
 173      for size :across (make-array 1 :element-type 'fixnum :initial-element 3)
 174      do (ppc-ldb-2 fun (if param size -1))))
 175
 176 (let ((acc '()))
 177   (ppc-ldb-1 (lambda (x)
 178          (push x acc)))
 179   (assert (equal acc '(#xff #xff #xff #xff))))
 180 \f