1  /* Test for the long double variants of strfroml and strtold.
       2     Copyright (C) 2019-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       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 <stdlib.h>
      20  
      21  #include <support/check.h>
      22  
      23  static int
      24  do_test (void)
      25  {
      26    int written;
      27    char buffer[64];
      28    char *bufptr = buffer;
      29    const char *expected = "-1.0000000000";
      30    long double read;
      31  
      32    /* Write to the buffer.  */
      33    written = strfroml (bufptr, 64, "%.10f", (long double) -1);
      34    if (written < 0)
      35      support_record_failure ();
      36  
      37    /* Compare against the expected output.  */
      38    TEST_COMPARE_STRING (expected, buffer);
      39  
      40    /* Read from the buffer.  */
      41    read = strtold (expected, NULL);
      42  
      43    if (read != -1.0L)
      44      support_record_failure ();
      45  
      46    return 0;
      47  }
      48  
      49  #include <support/test-driver.c>