tests/test-yn.c

   1 /* Test of yn() function.
   2    Copyright (C) 2010-2024 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>, 2010.  */
  18
  19 #include <config.h>
  20
  21 #include <math.h>
  22
  23 #include "signature.h"
  24 SIGNATURE_CHECK (yn, double, (int, double));
  25
  26 #include "macros.h"
  27
  28 volatile double x;
  29 double y;
  30
  31 int
  32 main ()
  33 {
  34   /* A particular value.  */
  35   x = 3.8;
  36   y = yn (0, x);
  37   ASSERT (y >= 0.0645032466 && y <= 0.0645032467);
  38
  39   /* A particular value.  */
  40   x = 3.8;
  41   y = yn (1, x);
  42   ASSERT (y >= 0.4141146893 && y <= 0.4141146894);
  43
  44   /* A particular value.  */
  45   x = 3.8;
  46   y = yn (2, x);
  47   ASSERT (y >= 0.1534518529 && y <= 0.1534518530);
  48
  49   /* A particular value.  */
  50   x = 3.8;
  51   y = yn (3, x);
  52   ASSERT (y >= -0.2525864231 && y <= -0.2525864230);
  53
  54   /* A particular value.  */
  55   x = 3.8;
  56   y = yn (4, x);
  57   ASSERT (y >= -0.5522725209 && y <= -0.5522725208);
  58
  59   /* A particular value.  */
  60   x = 3.8;
  61   y = yn (5, x);
  62   ASSERT (y >= -0.9100925684 && y <= -0.9100925683);
  63
  64   /* A particular value.  */
  65   x = 3.8;
  66   y = yn (6, x);
  67   ASSERT (y >= -1.842707923 && y <= -1.842707922);
  68
  69   /* A particular value.  */
  70   x = 3.8;
  71   y = yn (7, x);
  72   ASSERT (y >= -4.908985081 && y <= -4.908985080);
  73
  74   /* A particular value.  */
  75   x = 3.8;
  76   y = yn (8, x);
  77   ASSERT (y >= -16.24302659 && y <= -16.24302658);
  78
  79   /* A particular value.  */
  80   x = 3.8;
  81   y = yn (9, x);
  82   ASSERT (y >= -63.48270581 && y <= -63.48270580);
  83
  84   /* A particular value.  */
  85   x = 3.8;
  86   y = yn (10, x);
  87   ASSERT (y >= -284.4645273 && y <= -284.4645272);
  88
  89   return test_exit_status;
  90 }