math/test-tgmath-ret.c

   1 /* Test compilation of tgmath macros.
   2    Copyright (C) 2003-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Jaeger <aj@suse.de>, 2003.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <math.h>
  21 #include <complex.h>
  22 #include <tgmath.h>
  23 #include <stdint.h>
  24 #include <stdio.h>
  25
  26 static float fx;
  27 static double dx;
  28 static long double lx;
  29 static int rm = FP_INT_UPWARD;
  30 static unsigned int width = 64;
  31 static int errors = 0;
  32
  33 static void
  34 our_error (const char *c)
  35 {
  36   puts (c);
  37   ++errors;
  38 }
  39
  40 /* First function where the return type is constant.  */
  41
  42 #define CHECK_RET_CONST_TYPE(func, rettype, arg, name, ...)             \
  43   if (sizeof (func (arg, ## __VA_ARGS__)) != sizeof (rettype))          \
  44     our_error ("Return size of " #func " is wrong with " #name " argument");
  45
  46 #define CHECK_RET_CONST_FLOAT(func, rettype, ...)                       \
  47   CHECK_RET_CONST_TYPE (func, rettype, fx, float, ## __VA_ARGS__)
  48 #define CHECK_RET_CONST_DOUBLE(func, rettype, ...)                      \
  49   CHECK_RET_CONST_TYPE (func, rettype, dx, double, ## __VA_ARGS__)
  50 #define CHECK_RET_CONST_LDOUBLE(func, rettype, ...)                     \
  51   CHECK_RET_CONST_TYPE (func, rettype, lx, long double, ## __VA_ARGS__)
  52
  53 #define CHECK_RET_CONST(func, rettype, ...)                     \
  54 static void                                                     \
  55 check_return_ ##func (void)                                     \
  56 {                                                               \
  57   CHECK_RET_CONST_FLOAT (func, rettype, ## __VA_ARGS__)         \
  58   CHECK_RET_CONST_DOUBLE (func, rettype, ## __VA_ARGS__)        \
  59   CHECK_RET_CONST_LDOUBLE (func, rettype, ## __VA_ARGS__)       \
  60 }
  61
  62 CHECK_RET_CONST(ilogb, int)
  63 CHECK_RET_CONST(llogb, long)
  64 CHECK_RET_CONST(lrint, long)
  65 CHECK_RET_CONST(lround, long)
  66 CHECK_RET_CONST(llrint, long long)
  67 CHECK_RET_CONST(llround, long long)
  68 CHECK_RET_CONST(fromfp, intmax_t, rm, width)
  69 CHECK_RET_CONST(ufromfp, uintmax_t, rm, width)
  70 CHECK_RET_CONST(fromfpx, intmax_t, rm, width)
  71 CHECK_RET_CONST(ufromfpx, uintmax_t, rm, width)
  72
  73 static int
  74 do_test (void)
  75 {
  76   check_return_ilogb ();
  77   check_return_llogb ();
  78   check_return_lrint ();
  79   check_return_lround ();
  80   check_return_llrint ();
  81   check_return_llround ();
  82   check_return_fromfp ();
  83   check_return_ufromfp ();
  84   check_return_fromfpx ();
  85   check_return_ufromfpx ();
  86
  87   printf ("%Zd\n", sizeof (carg (lx)));
  88
  89   return errors != 0;
  90 }
  91
  92 #define TEST_FUNCTION do_test ()
  93 #include "../test-skeleton.c"