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

   1 /* This file is part of the GNU C Library.
   2    Copyright (C) 2012-2023 Free Software Foundation, Inc.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library 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 GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <array_length.h>
  19 #include <wchar.h>
  20
  21 /* Prototype for our test function.  */
  22 static int do_test (void);
  23
  24 static int
  25 do_test (void)
  26 {
  27 #ifndef NO_LONG_DOUBLE
  28   int result = 0;
  29   const long double x = 24.5;
  30   wchar_t a[16];
  31   swprintf (a, array_length (a), L"%La\n", x);
  32   wchar_t A[16];
  33   swprintf (A, array_length (a), L"%LA\n", x);
  34
  35   /* Here wprintf can return four valid variants.  We must accept all
  36      of them.  */
  37   result |= (wmemcmp (a, L"0xc.4p+1", 8) == 0
  38              && wmemcmp (A, L"0XC.4P+1", 8) == 0);
  39   result |= (wmemcmp (a, L"0x3.1p+3", 8) == 0
  40              && wmemcmp (A, L"0X3.1P+3", 8) == 0);
  41   result |= (wmemcmp (a, L"0x6.2p+2", 8) == 0
  42              && wmemcmp (A, L"0X6.2P+2", 8) == 0);
  43   result |= (wmemcmp (a, L"0x1.88p+4", 8) == 0
  44              && wmemcmp (A, L"0X1.88P+4", 8) == 0);
  45
  46   return result != 1;
  47 #else
  48   return 0;
  49 #endif
  50 }
  51
  52 #define TEST_FUNCTION do_test ()
  53 #include "../test-skeleton.c"