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| | ;;; floatfns-tests.el --- tests for floating point operations
;; Copyright 2017-2018 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
(require 'ert)
(ert-deftest divide-extreme-sign ()
(should-error (ceiling most-negative-fixnum -1.0))
(should-error (floor most-negative-fixnum -1.0))
(should-error (round most-negative-fixnum -1.0))
(should-error (truncate most-negative-fixnum -1.0)))
(ert-deftest logb-extreme-fixnum ()
(should (= (logb most-negative-fixnum) (1+ (logb most-positive-fixnum)))))
(ert-deftest fround-fixnum ()
(should-error (ffloor 0) :type 'wrong-type-argument)
(should-error (fceiling 0) :type 'wrong-type-argument)
(should-error (ftruncate 0) :type 'wrong-type-argument)
(should-error (fround 0) :type 'wrong-type-argument))
(ert-deftest bignum-to-float ()
(should (eql (float (+ most-positive-fixnum 1))
(+ (float most-positive-fixnum) 1))))
(ert-deftest bignum-abs ()
(should (= most-positive-fixnum
(- (abs most-negative-fixnum) 1))))
(ert-deftest bignum-logb ()
(should (= (+ (logb most-positive-fixnum) 1)
(logb (+ most-positive-fixnum 1)))))
(provide 'floatfns-tests)
|