;;;; arithmetic tests with no side effects ;;;; This software is part of the SBCL system. See the README file for ;;;; more information. ;;;; ;;;; While most of SBCL is derived from the CMU CL system, the test ;;;; files (like this one) were written from scratch after the fork ;;;; from CMU CL. ;;;; ;;;; This software is in the public domain and is provided with ;;;; absolutely no warranty. See the COPYING and CREDITS files for ;;;; more information. (cl:in-package :cl-user) ;;; Once upon a time, in the process of porting CMUCL's SPARC backend ;;; to SBCL, multiplications were excitingly broken. While it's ;;; unlikely that anything with such fundamental arithmetic errors as ;;; these are going to get this far, it's probably worth checking. (macrolet ((test (op res1 res2) `(progn (assert (= (,op 4 2) ,res1)) (assert (= (,op 2 4) ,res2)) (assert (= (funcall (compile nil (lambda (x y) (,op x y))) 4 2) ,res1)) (assert (= (funcall (compile nil (lambda (x y) (,op x y))) 2 4) ,res2))))) (test + 6 6) (test - 2 -2) (test * 8 8) (test / 2 1/2) (test expt 16 16)) ;;; In a bug reported by Wolfhard Buss on cmucl-imp 2002-06-18 (BUG ;;; 184), sbcl didn't catch all divisions by zero, notably divisions ;;; of bignums and ratios by 0. Fixed in sbcl-0.7.6.13. (macrolet ((test (form) `(multiple-value-bind (val cond) (ignore-errors ,form) (assert (null val)) (assert (typep cond 'division-by-zero))))) (test (/ 2/3 0)) (test (/ (1+ most-positive-fixnum) 0))) ;;; In a bug reported by Raymond Toy on cmucl-imp 2002-07-18, (COERCE ;;; '(COMPLEX FLOAT)) was failing to return a complex ;;; float; a patch was given by Wolfhard Buss cmucl-imp 2002-07-19. (assert (= (coerce 1 '(complex float)) #c(1.0 0.0))) (assert (= (coerce 1/2 '(complex float)) #c(0.5 0.0))) (assert (= (coerce 1.0d0 '(complex float)) #c(1.0d0 0.0d0))) ;;; ANSI says MIN and MAX should signal TYPE-ERROR if any argument ;;; isn't REAL. SBCL 0.7.7 didn't in the 1-arg case. (reported as a ;;; bug in CMU CL on #lisp IRC by lrasinen 2002-09-01) #|| FIXME: These tests would be good to have. But although, in sbcl-0.7.7.2x, (NULL (IGNORE-ERRORS (MIN 1 #(1 2 3)))) returns T, the ASSERTion fails, probably in something related to bug #194. (assert (null (ignore-errors (min '(1 2 3))))) (assert (= (min -1) -1)) (assert (null (ignore-errors (min 1 #(1 2 3))))) (assert (= (min 10 11) 10)) (assert (null (ignore-errors (min (find-package "CL") -5.0)))) (assert (= (min 5.0 -3) -3)) (assert (null (ignore-errors (max #c(4 3))))) (assert (= (max 0) 0)) (assert (null (ignore-errors (max "MIX" 3)))) (assert (= (max -1 10.0) 10.0)) (assert (null (ignore-errors (max 3 #'max)))) (assert (= (max -3 0) 0)) ||#