tests/test-intprops.c

   1 /* Test intprops.h.
   2    Copyright (C) 2011-2018 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Paul Eggert.  */
  18
  19 /* Tell gcc not to warn about the long expressions that the overflow
  20    macros expand to, or about the (X < 0) expressions.  */
  21 #if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
  22 # pragma GCC diagnostic ignored "-Woverlength-strings"
  23 # pragma GCC diagnostic ignored "-Wtype-limits"
  24
  25 /* Work around a bug in GCC 6.1 and earlier; see:
  26    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68971  */
  27 # pragma GCC diagnostic ignored "-Woverflow"
  28
  29 #endif
  30
  31 #include <config.h>
  32
  33 #include "intprops.h"
  34 #include "verify.h"
  35
  36 #include <stdbool.h>
  37 #include <inttypes.h>
  38 #include <limits.h>
  39
  40 #include "macros.h"
  41
  42 /* Compile-time verification of expression X.
  43    In this file, we need it as a statement, rather than as a declaration.  */
  44 #define verify_stmt(x) do { verify (x); } while (0)
  45
  46 /* VERIFY (X) uses a static assertion for compilers that are known to work,
  47    and falls back on a dynamic assertion for other compilers.
  48    These tests should be checkable via 'verify' rather than 'ASSERT', but
  49    using 'verify' would run into a bug with HP-UX 11.23 cc; see
  50    <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>.  */
  51 #if __GNUC__ || __SUNPRO_C
  52 # define VERIFY(x) verify_stmt (x)
  53 #else
  54 # define VERIFY(x) ASSERT (x)
  55 #endif
  56
  57 #define DONTCARE __LINE__
  58
  59 int
  60 main (void)
  61 {
  62   /* Use VERIFY for tests that must be integer constant expressions,
  63      ASSERT otherwise.  */
  64
  65   /* TYPE_IS_INTEGER.  */
  66   ASSERT (TYPE_IS_INTEGER (bool));
  67   ASSERT (TYPE_IS_INTEGER (char));
  68   ASSERT (TYPE_IS_INTEGER (signed char));
  69   ASSERT (TYPE_IS_INTEGER (unsigned char));
  70   ASSERT (TYPE_IS_INTEGER (short int));
  71   ASSERT (TYPE_IS_INTEGER (unsigned short int));
  72   ASSERT (TYPE_IS_INTEGER (int));
  73   ASSERT (TYPE_IS_INTEGER (unsigned int));
  74   ASSERT (TYPE_IS_INTEGER (long int));
  75   ASSERT (TYPE_IS_INTEGER (unsigned long int));
  76   ASSERT (TYPE_IS_INTEGER (intmax_t));
  77   ASSERT (TYPE_IS_INTEGER (uintmax_t));
  78   ASSERT (! TYPE_IS_INTEGER (float));
  79   ASSERT (! TYPE_IS_INTEGER (double));
  80   ASSERT (! TYPE_IS_INTEGER (long double));
  81
  82   /* TYPE_SIGNED.  */
  83   /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */
  84   VERIFY (TYPE_SIGNED (signed char));
  85   VERIFY (! TYPE_SIGNED (unsigned char));
  86   VERIFY (TYPE_SIGNED (short int));
  87   VERIFY (! TYPE_SIGNED (unsigned short int));
  88   VERIFY (TYPE_SIGNED (int));
  89   VERIFY (! TYPE_SIGNED (unsigned int));
  90   VERIFY (TYPE_SIGNED (long int));
  91   VERIFY (! TYPE_SIGNED (unsigned long int));
  92   VERIFY (TYPE_SIGNED (intmax_t));
  93   VERIFY (! TYPE_SIGNED (uintmax_t));
  94   ASSERT (TYPE_SIGNED (float));
  95   ASSERT (TYPE_SIGNED (double));
  96   ASSERT (TYPE_SIGNED (long double));
  97
  98   /* Integer representation.  Check that it is two's complement.  */
  99   VERIFY (INT_MIN + INT_MAX < 0);
 100
 101   /* TYPE_MINIMUM, TYPE_MAXIMUM.  */
 102   VERIFY (TYPE_MINIMUM (char) == CHAR_MIN);
 103   VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX);
 104   VERIFY (TYPE_MINIMUM (unsigned char) == 0);
 105   VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
 106   VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN);
 107   VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
 108   VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN);
 109   VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX);
 110   VERIFY (TYPE_MINIMUM (unsigned short int) == 0);
 111   VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
 112   VERIFY (TYPE_MINIMUM (int) == INT_MIN);
 113   VERIFY (TYPE_MAXIMUM (int) == INT_MAX);
 114   VERIFY (TYPE_MINIMUM (unsigned int) == 0);
 115   VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
 116   VERIFY (TYPE_MINIMUM (long int) == LONG_MIN);
 117   VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX);
 118   VERIFY (TYPE_MINIMUM (unsigned long int) == 0);
 119   VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
 120   #ifdef LLONG_MAX
 121    verify_stmt (TYPE_MINIMUM (long long int) == LLONG_MIN);
 122    verify_stmt (TYPE_MAXIMUM (long long int) == LLONG_MAX);
 123    verify_stmt (TYPE_MINIMUM (unsigned long long int) == 0);
 124    verify_stmt (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
 125   #endif
 126   VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
 127   VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
 128   VERIFY (TYPE_MINIMUM (uintmax_t) == 0);
 129   VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
 130
 131   /* TYPE_WIDTH.  */
 132   #ifdef CHAR_WIDTH
 133    verify_stmt (TYPE_WIDTH (char) == CHAR_WIDTH);
 134    verify_stmt (TYPE_WIDTH (signed char) == SCHAR_WIDTH);
 135    verify_stmt (TYPE_WIDTH (unsigned char) == UCHAR_WIDTH);
 136    verify_stmt (TYPE_WIDTH (short int) == SHRT_WIDTH);
 137    verify_stmt (TYPE_WIDTH (unsigned short int) == USHRT_WIDTH);
 138    verify_stmt (TYPE_WIDTH (int) == INT_WIDTH);
 139    verify_stmt (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
 140    verify_stmt (TYPE_WIDTH (long int) == LONG_WIDTH);
 141    verify_stmt (TYPE_WIDTH (unsigned long int) == ULONG_WIDTH);
 142    #ifdef LLONG_WIDTH
 143     verify_stmt (TYPE_WIDTH (long long int) == LLONG_WIDTH);
 144     verify_stmt (TYPE_WIDTH (unsigned long long int) == ULLONG_WIDTH);
 145    #endif
 146   #endif
 147
 148   /* INT_BITS_STRLEN_BOUND.  */
 149   VERIFY (INT_BITS_STRLEN_BOUND (1) == 1);
 150   VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789);
 151
 152   /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND.  */
 153   #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX.  */
 154   VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
 155   VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
 156   #endif
 157   #ifdef INT64_MAX
 158   VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
 159   VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
 160   #endif
 161
 162   /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
 163      INT_<op>_OVERFLOW tests, so define macros to do both.  OP is the
 164      operation, OPNAME its symbolic name, A and B its operands, T the
 165      result type, V the overflow flag, and VRES the result if V and if
 166      two's complement.  CHECK_BINOP is for most binary operatinos,
 167      CHECK_SBINOP for binary +, -, * when the result type is signed,
 168      and CHECK_UNOP for unary operations.  */
 169   #define CHECK_BINOP(op, opname, a, b, t, v, vres)                       \
 170     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t),        \
 171                                            TYPE_MAXIMUM (t))              \
 172             == (v));                                                      \
 173     VERIFY (INT_##opname##_OVERFLOW (a, b) == (v))
 174   #define CHECK_SBINOP(op, opname, a, b, t, v, vres)                      \
 175     CHECK_BINOP(op, opname, a, b, t, v, vres);                            \
 176     {                                                                     \
 177       t result;                                                           \
 178       ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v));               \
 179       ASSERT (result == ((v) ? (vres) : ((a) op (b))));                   \
 180     }
 181   #define CHECK_UNOP(op, opname, a, t, v)                                 \
 182     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t),           \
 183                                            TYPE_MAXIMUM (t))              \
 184             == (v));                                                      \
 185     VERIFY (INT_##opname##_OVERFLOW (a) == (v))
 186
 187   /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW.  */
 188   VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
 189   VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1));
 190
 191   CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN);
 192   CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1);
 193   CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1);
 194   CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX);
 195   CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u);
 196   CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u);
 197
 198   CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1);
 199   CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN);
 200   CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX);
 201   CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1);
 202   CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u);
 203   CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u);
 204
 205   CHECK_UNOP (-, NEGATE, INT_MIN, int, true);
 206   CHECK_UNOP (-, NEGATE, 0, int, false);
 207   CHECK_UNOP (-, NEGATE, INT_MAX, int, false);
 208   CHECK_UNOP (-, NEGATE, 0u, unsigned int, false);
 209   CHECK_UNOP (-, NEGATE, 1u, unsigned int, true);
 210   CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true);
 211
 212   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1);
 213   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN);
 214   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN);
 215   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0);
 216   CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int,
 217                 INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 218   CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
 219                 long int, false, LONG_MIN - LONG_MIN % INT_MAX);
 220
 221   CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int,
 222                INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 223   CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX);
 224   CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int,
 225                false, INT_MIN / -1u);
 226
 227   CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0);
 228   CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0);
 229   CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int,
 230                false, INT_MIN % -1u);
 231
 232   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1);
 233   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true,
 234                (UINT_MAX / 2 + 1) << 1);
 235   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false,
 236                (UINT_MAX / 2) << 1);
 237
 238   /* INT_<op>_OVERFLOW and INT_<op>_WRAPV with mixed types.  */
 239   #define CHECK_SUM(a, b, t, v, vres)                                     \
 240     CHECK_SUM1(a, b, t, v, vres);                                         \
 241     CHECK_SUM1(b, a, t, v, vres)
 242   #define CHECK_SSUM(a, b, t, v, vres)                                    \
 243     CHECK_SSUM1(a, b, t, v, vres);                                        \
 244     CHECK_SSUM1(b, a, t, v, vres)
 245   #define CHECK_SUM1(a, b, t, v, vres)                                    \
 246     VERIFY (INT_ADD_OVERFLOW (a, b) == (v))
 247   #define CHECK_SSUM1(a, b, t, v, vres)                                   \
 248     CHECK_SUM1(a, b, t, v, vres);                                         \
 249     {                                                                     \
 250       t result;                                                           \
 251       ASSERT (INT_ADD_WRAPV (a, b, &result) == (v));                      \
 252       ASSERT (result == ((v) ? (vres) : ((a) + (b))));                    \
 253     }
 254   CHECK_SSUM (-1, LONG_MIN, long int, true, LONG_MAX);
 255   CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE);
 256   CHECK_SSUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN,
 257               INT_MIN == LONG_MIN ? INT_MAX : DONTCARE);
 258   CHECK_SUM (0u, -1, unsigned int, true, 0u + -1);
 259   CHECK_SUM (0u, 0, unsigned int, false, DONTCARE);
 260   CHECK_SUM (0u, 1, unsigned int, false, DONTCARE);
 261   CHECK_SSUM (1, LONG_MAX, long int, true, LONG_MIN);
 262   CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u);
 263   CHECK_SSUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX,
 264               INT_MAX == LONG_MAX ? INT_MIN : DONTCARE);
 265   CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX);
 266   CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN);
 267   {
 268     long int result;
 269     ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX));
 270     ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN));
 271   }
 272
 273   #define CHECK_DIFFERENCE(a, b, t, v, vres)                              \
 274     VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v))
 275   #define CHECK_SDIFFERENCE(a, b, t, v, vres)                             \
 276     CHECK_DIFFERENCE(a, b, t, v, vres);                                   \
 277     {                                                                     \
 278       t result;                                                           \
 279       ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v));                 \
 280       ASSERT (result == ((v) ? (vres) : ((a) - (b))));                    \
 281     }
 282   CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1,
 283                     INT_MAX - 1u);
 284   CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1);
 285   CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1);
 286   CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1);
 287   CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u);
 288   CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u);
 289   CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN);
 290   CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX);
 291   CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN);
 292   CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX);
 293   {
 294     long int result;
 295     ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX));
 296     ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX));
 297   }
 298
 299   #define CHECK_PRODUCT(a, b, t, v, vres)                                 \
 300     CHECK_PRODUCT1(a, b, t, v, vres);                                     \
 301     CHECK_PRODUCT1(b, a, t, v, vres)
 302   #define CHECK_SPRODUCT(a, b, t, v, vres)                                \
 303     CHECK_SPRODUCT1(a, b, t, v, vres);                                    \
 304     CHECK_SPRODUCT1(b, a, t, v, vres)
 305   #define CHECK_PRODUCT1(a, b, t, v, vres)                                \
 306     VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v))
 307   #define CHECK_SPRODUCT1(a, b, t, v, vres)                               \
 308     CHECK_PRODUCT1(a, b, t, v, vres);                                     \
 309     {                                                                     \
 310       t result;                                                           \
 311       ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v));                 \
 312       ASSERT (result == ((v) ? (vres) : ((a) * (b))));                    \
 313     }
 314   CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u);
 315   CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 316   CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX);
 317   CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN);
 318   CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE);
 319   CHECK_SPRODUCT (0, -1, int, false, DONTCARE);
 320   CHECK_SPRODUCT (0, 0, int, false, DONTCARE);
 321   CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE);
 322   CHECK_SPRODUCT (0, 1, int, false, DONTCARE);
 323   CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE);
 324   CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE);
 325   CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE);
 326   CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE);
 327   CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE);
 328   CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE);
 329   CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE);
 330   CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE);
 331   CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE);
 332   CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE);
 333   CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE);
 334   CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE);
 335   CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE);
 336   CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN);
 337   CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX);
 338   CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX);
 339   CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true,
 340                  INT_MAX * ULONG_MAX);
 341   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN);
 342   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE);
 343   CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX);
 344   CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true,
 345                  INT_MIN * ULONG_MAX);
 346   {
 347     long int result;
 348     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
 349             == (LONG_MAX / INT_MAX < INT_MAX));
 350     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
 351             || result == INT_MAX * (long int) INT_MAX);
 352     ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result)
 353             || result == INT_MIN * (long int) INT_MIN);
 354   }
 355
 356 # ifdef LLONG_MAX
 357   {
 358     long long int result;
 359     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
 360             == (LLONG_MAX / LONG_MAX < LONG_MAX));
 361     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
 362             || result == LONG_MAX * (long long int) LONG_MAX);
 363     ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result)
 364             || result == LONG_MIN * (long long int) LONG_MIN);
 365   }
 366 # endif
 367
 368   #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v))
 369
 370   CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN);
 371   CHECK_QUOTIENT (INT_MIN, UINT_MAX, false);
 372   CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false);
 373   CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false);
 374   CHECK_QUOTIENT (-11, 10u, true);
 375   CHECK_QUOTIENT (-10, 10u, true);
 376   CHECK_QUOTIENT (-9, 10u, false);
 377   CHECK_QUOTIENT (11u, -10, true);
 378   CHECK_QUOTIENT (10u, -10, true);
 379   CHECK_QUOTIENT (9u, -10, false);
 380
 381   #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v))
 382
 383   CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN);
 384   CHECK_REMAINDER (-1, UINT_MAX, true);
 385   CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true);
 386   CHECK_REMAINDER (INTMAX_MIN, UINT_MAX,
 387                    (INTMAX_MAX < UINT_MAX
 388                     && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
 389   CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1);
 390   CHECK_REMAINDER (1u, -1, false);
 391   CHECK_REMAINDER (37*39u, -39, false);
 392   CHECK_REMAINDER (37*39u + 1, -39, true);
 393   CHECK_REMAINDER (37*39u - 1, -39, true);
 394   CHECK_REMAINDER (LONG_MAX, -INT_MAX, false);
 395
 396   return 0;
 397 }