stdio-common/tst-long-dbl-fphex.c

   1 /* This file is part of the GNU C Library.
   2    Copyright (C) 2012-2020 Free Software Foundation, Inc.
   3    Contributed by Marek Polacek <polacek@redhat.com>, 2012.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <array_length.h>
  20 #include <wchar.h>
  21
  22 /* Prototype for our test function.  */
  23 static int do_test (void);
  24
  25 static int
  26 do_test (void)
  27 {
  28 #ifndef NO_LONG_DOUBLE
  29   int result = 0;
  30   const long double x = 24.5;
  31   wchar_t a[16];
  32   swprintf (a, array_length (a), L"%La\n", x);
  33   wchar_t A[16];
  34   swprintf (A, array_length (a), L"%LA\n", x);
  35
  36   /* Here wprintf can return four valid variants.  We must accept all
  37      of them.  */
  38   result |= (wmemcmp (a, L"0xc.4p+1", 8) == 0
  39              && wmemcmp (A, L"0XC.4P+1", 8) == 0);
  40   result |= (wmemcmp (a, L"0x3.1p+3", 8) == 0
  41              && wmemcmp (A, L"0X3.1P+3", 8) == 0);
  42   result |= (wmemcmp (a, L"0x6.2p+2", 8) == 0
  43              && wmemcmp (A, L"0X6.2P+2", 8) == 0);
  44   result |= (wmemcmp (a, L"0x1.88p+4", 8) == 0
  45              && wmemcmp (A, L"0X1.88P+4", 8) == 0);
  46
  47   return result != 1;
  48 #else
  49   return 0;
  50 #endif
  51 }
  52
  53 #define TEST_FUNCTION do_test ()
  54 #include "../test-skeleton.c"