stdlib/tst-strtod-nan-sign-main.c

   1 /* Test strtod functions handle signs of NaNs (bug 23007).
   2    Copyright (C) 2018-2023 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 <math.h>
  20 #include <stdlib.h>
  21 #include <wchar.h>
  22
  23 #include <stdlib/tst-strtod.h>
  24 #include <support/check.h>
  25
  26 #define CONCAT_(X, Y) X ## Y
  27 #define CONCAT(X, Y) CONCAT_ (X, Y)
  28 #define FNX(FN) CONCAT (FNPFX, FN)
  29
  30 #define TEST_STRTOD(FSUF, FTYPE, FTOSTR, LSUF, CSUF)    \
  31 static int                                              \
  32 test_strto ## FSUF (void)                               \
  33 {                                                       \
  34   FTYPE val_pos = FNX (FSUF) (L_("nan"), NULL);         \
  35   FTYPE copy_pos = copysign ## CSUF (1, val_pos);       \
  36   TEST_VERIFY (isnan (val_pos) && copy_pos == 1);       \
  37   FTYPE val_neg = FNX (FSUF) (L_("-nan"), NULL);        \
  38   FTYPE copy_neg = copysign ## CSUF (1, val_neg);       \
  39   TEST_VERIFY (isnan (val_neg) && copy_neg == -1);      \
  40   return 0;                                             \
  41 }
  42 GEN_TEST_STRTOD_FOREACH (TEST_STRTOD)
  43
  44 static int
  45 do_test (void)
  46 {
  47   return STRTOD_TEST_FOREACH (test_strto);
  48 }
  49
  50 #include <support/test-driver.c>