tests/test-ceil1.c

   1 /* Test of rounding towards positive infinity.
   2    Copyright (C) 2007-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
  18
  19 #include <config.h>
  20
  21 #include <math.h>
  22
  23 #include "signature.h"
  24 SIGNATURE_CHECK (ceil, double, (double));
  25
  26 #include <float.h>
  27
  28 #include "isnand-nolibm.h"
  29 #include "minus-zero.h"
  30 #include "infinity.h"
  31 #include "nan.h"
  32 #include "macros.h"
  33
  34 int
  35 main ()
  36 {
  37   /* Zero.  */
  38   ASSERT (ceil (0.0) == 0.0);
  39   ASSERT (ceil (minus_zerod) == 0.0);
  40   /* Positive numbers.  */
  41   ASSERT (ceil (0.3) == 1.0);
  42   ASSERT (ceil (0.7) == 1.0);
  43   ASSERT (ceil (1.0) == 1.0);
  44   ASSERT (ceil (1.001) == 2.0);
  45   ASSERT (ceil (1.5) == 2.0);
  46   ASSERT (ceil (1.999) == 2.0);
  47   ASSERT (ceil (2.0) == 2.0);
  48   ASSERT (ceil (65535.999) == 65536.0);
  49   ASSERT (ceil (65536.0) == 65536.0);
  50   ASSERT (ceil (2.341e31) == 2.341e31);
  51   /* Negative numbers.  */
  52   ASSERT (ceil (-0.3) == 0.0);
  53   ASSERT (ceil (-0.7) == 0.0);
  54   ASSERT (ceil (-1.0) == -1.0);
  55   ASSERT (ceil (-1.5) == -1.0);
  56   ASSERT (ceil (-1.999) == -1.0);
  57   ASSERT (ceil (-2.0) == -2.0);
  58   ASSERT (ceil (-65535.999) == -65535.0);
  59   ASSERT (ceil (-65536.0) == -65536.0);
  60   ASSERT (ceil (-2.341e31) == -2.341e31);
  61   /* Infinite numbers.  */
  62   ASSERT (ceil (Infinityd ()) == Infinityd ());
  63   ASSERT (ceil (- Infinityd ()) == - Infinityd ());
  64   /* NaNs.  */
  65   ASSERT (isnand (ceil (NaNd ())));
  66
  67   return test_exit_status;
  68 }