math/test-tgmath-ret.c

   1 /* Test compilation of tgmath macros.
   2    Copyright (C) 2003-2022 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 <complex.h>
  21 #include <tgmath.h>
  22 #include <stdint.h>
  23 #include <stdio.h>
  24
  25 static float fx;
  26 static double dx;
  27 static long double lx;
  28 static int rm = FP_INT_UPWARD;
  29 static unsigned int width = 64;
  30 static int errors = 0;
  31
  32 static void
  33 our_error (const char *c)
  34 {
  35   puts (c);
  36   ++errors;
  37 }
  38
  39 /* First function where the return type is constant.  */
  40
  41 #define CHECK_RET_CONST_TYPE(func, rettype, arg, name, ...)             \
  42   if (sizeof (func (arg, ## __VA_ARGS__)) != sizeof (rettype))          \
  43     our_error ("Return size of " #func " is wrong with " #name " argument");
  44
  45 #define CHECK_RET_CONST_FLOAT(func, rettype, ...)                       \
  46   CHECK_RET_CONST_TYPE (func, rettype, fx, float, ## __VA_ARGS__)
  47 #define CHECK_RET_CONST_DOUBLE(func, rettype, ...)                      \
  48   CHECK_RET_CONST_TYPE (func, rettype, dx, double, ## __VA_ARGS__)
  49 #define CHECK_RET_CONST_LDOUBLE(func, rettype, ...)                     \
  50   CHECK_RET_CONST_TYPE (func, rettype, lx, long double, ## __VA_ARGS__)
  51
  52 #define CHECK_RET_CONST(func, rettype, ...)                     \
  53 static void                                                     \
  54 check_return_ ##func (void)                                     \
  55 {                                                               \
  56   CHECK_RET_CONST_FLOAT (func, rettype, ## __VA_ARGS__)         \
  57   CHECK_RET_CONST_DOUBLE (func, rettype, ## __VA_ARGS__)        \
  58   CHECK_RET_CONST_LDOUBLE (func, rettype, ## __VA_ARGS__)       \
  59 }
  60
  61 CHECK_RET_CONST(ilogb, int)
  62 CHECK_RET_CONST(llogb, long)
  63 CHECK_RET_CONST(lrint, long)
  64 CHECK_RET_CONST(lround, long)
  65 CHECK_RET_CONST(llrint, long long)
  66 CHECK_RET_CONST(llround, long long)
  67 CHECK_RET_CONST(fromfp, intmax_t, rm, width)
  68 CHECK_RET_CONST(ufromfp, uintmax_t, rm, width)
  69 CHECK_RET_CONST(fromfpx, intmax_t, rm, width)
  70 CHECK_RET_CONST(ufromfpx, uintmax_t, rm, width)
  71
  72 static int
  73 do_test (void)
  74 {
  75   check_return_ilogb ();
  76   check_return_llogb ();
  77   check_return_lrint ();
  78   check_return_lround ();
  79   check_return_llrint ();
  80   check_return_llround ();
  81   check_return_fromfp ();
  82   check_return_ufromfp ();
  83   check_return_fromfpx ();
  84   check_return_ufromfpx ();
  85
  86   printf ("%zd\n", sizeof (carg (lx)));
  87
  88   return errors != 0;
  89 }
  90
  91 #define TEST_FUNCTION do_test ()
  92 #include "../test-skeleton.c"