Rename isnan, applicable to 'double' only, to isnand.

[gnulib.git] / tests / test-isnan.c

diff --git a/tests/test-isnan.c b/tests/test-isnan.c
deleted file mode 100644 (file)
index 3541af4..0000000
--- a/tests/test-isnan.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/* Test of isnan() substitute.
-   Copyright (C) 2007 Free Software Foundation, Inc.
-
-   This program 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.
-
-   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* Written by Bruno Haible <bruno@clisp.org>, 2007.  */
-
-#include <config.h>
-
-#include "isnan.h"
-
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#define ASSERT(expr) \
-  do                                                                        \
-    {                                                                       \
-      if (!(expr))                                                          \
-        {                                                                   \
-          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
-          abort ();                                                         \
-        }                                                                   \
-    }                                                                       \
-  while (0)
-
-/* The Compaq (ex-DEC) C 6.4 compiler chokes on the expression 0.0 / 0.0.  */
-#ifdef __DECC
-static double
-NaN ()
-{
-  static double zero = 0.0;
-  return zero / zero;
-}
-#else
-# define NaN() (0.0 / 0.0)
-#endif
-
-int
-main ()
-{
-  /* Finite values.  */
-  ASSERT (!isnan (3.141));
-  ASSERT (!isnan (3.141e30));
-  ASSERT (!isnan (3.141e-30));
-  ASSERT (!isnan (-2.718));
-  ASSERT (!isnan (-2.718e30));
-  ASSERT (!isnan (-2.718e-30));
-  ASSERT (!isnan (0.0));
-  ASSERT (!isnan (-0.0));
-  /* Infinite values.  */
-  ASSERT (!isnan (1.0 / 0.0));
-  ASSERT (!isnan (-1.0 / 0.0));
-  /* Quiet NaN.  */
-  ASSERT (isnan (NaN ()));
-#if defined DBL_EXPBIT0_WORD && defined DBL_EXPBIT0_BIT
-  /* Signalling NaN.  */
-  {
-    #define NWORDS \
-      ((sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int))
-    typedef union { double value; unsigned int word[NWORDS]; } memory_double;
-    memory_double m;
-    m.value = NaN ();
-# if DBL_EXPBIT0_BIT > 0
-    m.word[DBL_EXPBIT0_WORD] ^= (unsigned int) 1 << (DBL_EXPBIT0_BIT - 1);
-# else
-    m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
-      ^= (unsigned int) 1 << (sizeof (unsigned int) * CHAR_BIT - 1);
-# endif
-    m.word[DBL_EXPBIT0_WORD + (DBL_EXPBIT0_WORD < NWORDS / 2 ? 1 : - 1)]
-      |= (unsigned int) 1 << DBL_EXPBIT0_BIT;
-    ASSERT (isnan (m.value));
-  }
-#endif
-  return 0;
-}