test/src/floatfns-tests.el

   1 ;;; floatfns-tests.el --- tests for floating point operations
   2
   3 ;; Copyright 2017-2018 Free Software Foundation, Inc.
   4
   5 ;; This file is part of GNU Emacs.
   6
   7 ;; GNU Emacs is free software: you can redistribute it and/or modify
   8 ;; it under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation, either version 3 of the License, or
  10 ;; (at your option) any later version.
  11
  12 ;; GNU Emacs is distributed in the hope that it will be useful,
  13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;; GNU General Public License for more details.
  16
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
  19
  20 (require 'ert)
  21
  22 (ert-deftest divide-extreme-sign ()
  23   (should-error (ceiling most-negative-fixnum -1.0))
  24   (should-error (floor most-negative-fixnum -1.0))
  25   (should-error (round most-negative-fixnum -1.0))
  26   (should-error (truncate most-negative-fixnum -1.0)))
  27
  28 (ert-deftest logb-extreme-fixnum ()
  29   (should (= (logb most-negative-fixnum) (1+ (logb most-positive-fixnum)))))
  30
  31 (ert-deftest fround-fixnum ()
  32   (should-error (ffloor 0) :type 'wrong-type-argument)
  33   (should-error (fceiling 0) :type 'wrong-type-argument)
  34   (should-error (ftruncate 0) :type 'wrong-type-argument)
  35   (should-error (fround 0) :type 'wrong-type-argument))
  36
  37 (provide 'floatfns-tests)