tests/test-intprops.c

   1 /* Test intprops.h.
   2    Copyright (C) 2011-2025 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 #include <config.h>
  20
  21 #if _GL_GNUC_PREREQ (4, 3)
  22
  23 /* Tell gcc not to warn about the long expressions that the overflow
  24    macros expand to, or about the (X < 0) expressions.  */
  25 # pragma GCC diagnostic ignored "-Woverlength-strings"
  26 # pragma GCC diagnostic ignored "-Wtype-limits"
  27
  28 /* Work around a bug in GCC 6.1 and earlier; see:
  29    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68971  */
  30 # pragma GCC diagnostic ignored "-Woverflow"
  31
  32 #endif
  33
  34 #ifdef TEST_STDCKDINT
  35 # include <stdckdint.h>
  36 #else
  37 # include "intprops.h"
  38 #endif
  39
  40 #include <inttypes.h>
  41 #include <limits.h>
  42
  43 #include "macros.h"
  44
  45 /* Compile-time verification of expression X.
  46    In this file, we need it as a statement, rather than as a declaration.  */
  47 #define verify_stmt(x) do { static_assert (x); } while (0)
  48
  49 /* VERIFY (X) uses a static assertion for compilers that are known to work,
  50    and falls back on a dynamic assertion for other compilers.
  51    But it ignores X if testing stdckdint.h.
  52    These tests should be checkable via 'verify' rather than 'ASSERT', but
  53    using 'verify' would run into a bug with HP-UX 11.23 cc; see
  54    <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>.  */
  55 #ifdef TEST_STDCKDINT
  56 # define VERIFY(x) ((void) 0)
  57 #elif __GNUC__ || __clang__ || __SUNPRO_C
  58 # define VERIFY(x) verify_stmt (x)
  59 #else
  60 # define VERIFY(x) ASSERT (x)
  61 #endif
  62
  63 #define DONTCARE __LINE__
  64
  65 int int_minus_2 = -2;
  66 int int_1 = 1;
  67
  68 int
  69 main (void)
  70 {
  71   /* Use VERIFY for tests that must be integer constant expressions,
  72      ASSERT otherwise.  */
  73
  74 #ifndef TEST_STDCKDINT
  75   /* TYPE_IS_INTEGER.  */
  76   ASSERT (TYPE_IS_INTEGER (bool));
  77   ASSERT (TYPE_IS_INTEGER (char));
  78   ASSERT (TYPE_IS_INTEGER (signed char));
  79   ASSERT (TYPE_IS_INTEGER (unsigned char));
  80   ASSERT (TYPE_IS_INTEGER (short int));
  81   ASSERT (TYPE_IS_INTEGER (unsigned short int));
  82   ASSERT (TYPE_IS_INTEGER (int));
  83   ASSERT (TYPE_IS_INTEGER (unsigned int));
  84   ASSERT (TYPE_IS_INTEGER (long int));
  85   ASSERT (TYPE_IS_INTEGER (unsigned long int));
  86   ASSERT (TYPE_IS_INTEGER (intmax_t));
  87   ASSERT (TYPE_IS_INTEGER (uintmax_t));
  88   ASSERT (! TYPE_IS_INTEGER (float));
  89   ASSERT (! TYPE_IS_INTEGER (double));
  90   ASSERT (! TYPE_IS_INTEGER (long double));
  91
  92   /* TYPE_SIGNED.  */
  93   /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */
  94   VERIFY (TYPE_SIGNED (signed char));
  95   VERIFY (! TYPE_SIGNED (unsigned char));
  96   VERIFY (TYPE_SIGNED (short int));
  97   VERIFY (! TYPE_SIGNED (unsigned short int));
  98   VERIFY (TYPE_SIGNED (int));
  99   VERIFY (! TYPE_SIGNED (unsigned int));
 100   VERIFY (TYPE_SIGNED (long int));
 101   VERIFY (! TYPE_SIGNED (unsigned long int));
 102   VERIFY (TYPE_SIGNED (intmax_t));
 103   VERIFY (! TYPE_SIGNED (uintmax_t));
 104   ASSERT (TYPE_SIGNED (float));
 105   ASSERT (TYPE_SIGNED (double));
 106   ASSERT (TYPE_SIGNED (long double));
 107
 108   /* Integer representation.  Check that it is two's complement.  */
 109   VERIFY (INT_MIN + INT_MAX < 0);
 110
 111   /* TYPE_MINIMUM, TYPE_MAXIMUM.  */
 112   VERIFY (TYPE_MINIMUM (char) == CHAR_MIN);
 113   VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX);
 114   VERIFY (TYPE_MINIMUM (unsigned char) == 0);
 115   VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
 116   VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN);
 117   VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
 118   VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN);
 119   VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX);
 120   VERIFY (TYPE_MINIMUM (unsigned short int) == 0);
 121   VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
 122   VERIFY (TYPE_MINIMUM (int) == INT_MIN);
 123   VERIFY (TYPE_MAXIMUM (int) == INT_MAX);
 124   VERIFY (TYPE_MINIMUM (unsigned int) == 0);
 125   VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
 126   VERIFY (TYPE_MINIMUM (long int) == LONG_MIN);
 127   VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX);
 128   VERIFY (TYPE_MINIMUM (unsigned long int) == 0);
 129   VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
 130   #ifdef LLONG_MAX
 131    verify_stmt (TYPE_MINIMUM (long long int) == LLONG_MIN);
 132    verify_stmt (TYPE_MAXIMUM (long long int) == LLONG_MAX);
 133    verify_stmt (TYPE_MINIMUM (unsigned long long int) == 0);
 134    verify_stmt (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
 135   #endif
 136   VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
 137   VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
 138   VERIFY (TYPE_MINIMUM (uintmax_t) == 0);
 139   VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
 140
 141   /* TYPE_WIDTH.  */
 142   #ifdef CHAR_WIDTH
 143    verify_stmt (TYPE_WIDTH (char) == CHAR_WIDTH);
 144    verify_stmt (TYPE_WIDTH (signed char) == SCHAR_WIDTH);
 145    verify_stmt (TYPE_WIDTH (unsigned char) == UCHAR_WIDTH);
 146    verify_stmt (TYPE_WIDTH (short int) == SHRT_WIDTH);
 147    verify_stmt (TYPE_WIDTH (unsigned short int) == USHRT_WIDTH);
 148    verify_stmt (TYPE_WIDTH (int) == INT_WIDTH);
 149    verify_stmt (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
 150    verify_stmt (TYPE_WIDTH (long int) == LONG_WIDTH);
 151    verify_stmt (TYPE_WIDTH (unsigned long int) == ULONG_WIDTH);
 152    #ifdef LLONG_WIDTH
 153     verify_stmt (TYPE_WIDTH (long long int) == LLONG_WIDTH);
 154     verify_stmt (TYPE_WIDTH (unsigned long long int) == ULLONG_WIDTH);
 155    #endif
 156   #endif
 157
 158   /* INT_BITS_STRLEN_BOUND.  */
 159   VERIFY (INT_BITS_STRLEN_BOUND (1) == 1);
 160   VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789);
 161
 162   /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND.  */
 163   #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX.  */
 164   VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
 165   VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
 166   #endif
 167   #ifdef INT64_MAX
 168   VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
 169   VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
 170   #endif
 171 #endif
 172
 173   /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
 174      INT_<op>_OVERFLOW tests, so define macros to do both.  OP is the
 175      operation, OPNAME its symbolic name, A and B its operands, T the
 176      result type, V the overflow flag, and VRES the result if V and if
 177      two's complement.  CHECK_BINOP is for most binary operations,
 178      CHECK_SBINOP for binary +, -, * when the result type is signed,
 179      and CHECK_UNOP for unary operations.  */
 180   #define CHECK_BINOP(op, opname, a, b, t, v, vres)                       \
 181     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t),        \
 182                                            TYPE_MAXIMUM (t))              \
 183             == (v));                                                      \
 184     VERIFY (INT_##opname##_OVERFLOW (a, b) == (v))
 185   #define CHECK_SBINOP(op, opname, a, b, t, v, vres)                      \
 186     CHECK_BINOP(op, opname, a, b, t, v, vres);                            \
 187     {                                                                     \
 188       t result;                                                           \
 189       ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v));               \
 190       ASSERT (result == ((v) ? (vres) : ((a) op (b))));                   \
 191     }
 192   #define CHECK_UNOP(op, opname, a, t, v)                                 \
 193     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t),           \
 194                                            TYPE_MAXIMUM (t))              \
 195             == (v));                                                      \
 196     VERIFY (INT_##opname##_OVERFLOW (a) == (v))
 197
 198   /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW.  */
 199   VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
 200   VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1));
 201
 202   CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN);
 203   CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1);
 204   CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1);
 205   CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX);
 206   CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u);
 207   CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u);
 208
 209   CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1);
 210   CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN);
 211   CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX);
 212   CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1);
 213   CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u);
 214   CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u);
 215
 216   CHECK_UNOP (-, NEGATE, INT_MIN, int, true);
 217   CHECK_UNOP (-, NEGATE, 0, int, false);
 218   CHECK_UNOP (-, NEGATE, INT_MAX, int, false);
 219   CHECK_UNOP (-, NEGATE, 0u, unsigned int, false);
 220   CHECK_UNOP (-, NEGATE, 1u, unsigned int, true);
 221   CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true);
 222
 223   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1);
 224   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN);
 225   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN);
 226   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0);
 227   CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int,
 228                 INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 229 #if !defined __HP_cc
 230   CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
 231                 long int, false, LONG_MIN - LONG_MIN % INT_MAX);
 232 #endif
 233
 234   CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int,
 235                INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 236   CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX);
 237   CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int,
 238                false, INT_MIN / -1u);
 239
 240   CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0);
 241   CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0);
 242   CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int,
 243                false, INT_MIN % -1u);
 244
 245   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1);
 246   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true,
 247                (UINT_MAX / 2 + 1) << 1);
 248   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false,
 249                (UINT_MAX / 2) << 1);
 250
 251   /* INT_<op>_OVERFLOW and INT_<op>_WRAPV with mixed types.  */
 252   #define CHECK_SUM(a, b, t, v, vres)                                     \
 253     CHECK_SUM1 (a, b, t, v, vres);                                        \
 254     CHECK_SUM1 (b, a, t, v, vres)
 255   #define CHECK_SUM_WRAPV(a, b, t, v, vres, okres)                        \
 256     CHECK_SUM_WRAPV1 (a, b, t, v, vres, okres);                           \
 257     CHECK_SUM_WRAPV1 (b, a, t, v, vres, okres)
 258   #define CHECK_SUM1(a, b, t, v, vres)                                    \
 259     VERIFY (INT_ADD_OVERFLOW (a, b) == (v));                              \
 260     CHECK_SUM_WRAPV1 (a, b, t, v, vres, (a) + (b))
 261   #define CHECK_SUM_WRAPV1(a, b, t, v, vres, okres)                       \
 262     {                                                                     \
 263       t result;                                                           \
 264       ASSERT (INT_ADD_WRAPV (a, b, &result) == (v));                      \
 265       ASSERT (result == ((v) ? (vres) : (okres)));                        \
 266     }
 267   CHECK_SUM (-1, LONG_MIN, long int, true, LONG_MAX);
 268   CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE);
 269   CHECK_SUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN,
 270               INT_MIN == LONG_MIN ? INT_MAX : DONTCARE);
 271   CHECK_SUM (0u, -1, unsigned int, true, 0u + -1);
 272   CHECK_SUM (0u, 0, unsigned int, false, DONTCARE);
 273   CHECK_SUM (0u, 1, unsigned int, false, DONTCARE);
 274   CHECK_SUM (1, LONG_MAX, long int, true, LONG_MIN);
 275   CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u);
 276   CHECK_SUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX,
 277               INT_MAX == LONG_MAX ? INT_MIN : DONTCARE);
 278   CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX);
 279   CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN);
 280   CHECK_SUM_WRAPV (-1, 1u, int, false, DONTCARE, 0);
 281   CHECK_SUM_WRAPV (-1, 1ul, int, false, DONTCARE, 0);
 282   CHECK_SUM_WRAPV (-1l, 1u, int, false, DONTCARE, 0);
 283   CHECK_SUM_WRAPV (-100, 1000u, int, false, DONTCARE, 900);
 284   CHECK_SUM_WRAPV (INT_MIN, UINT_MAX, int, false, DONTCARE, INT_MAX);
 285   CHECK_SUM_WRAPV (1u, INT_MAX, int, true, INT_MIN, DONTCARE);
 286   CHECK_SUM_WRAPV (INT_MAX, 1, long int, LONG_MAX <= INT_MAX, INT_MIN,
 287                    INT_MAX + 1L);
 288   CHECK_SUM_WRAPV (UINT_MAX, 1, long int, LONG_MAX <= UINT_MAX, 0,
 289                    UINT_MAX + 1L);
 290   CHECK_SUM_WRAPV (INT_MAX, 1, unsigned long int, ULONG_MAX <= INT_MAX, 0,
 291                    INT_MAX + 1uL);
 292   CHECK_SUM_WRAPV (UINT_MAX, 1, unsigned long int, ULONG_MAX <= UINT_MAX, 0,
 293                    UINT_MAX + 1uL);
 294
 295   {
 296     long int result;
 297     ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX));
 298     ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN));
 299   }
 300
 301   #define CHECK_DIFFERENCE(a, b, t, v, vres)                              \
 302     VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v))
 303   #define CHECK_SDIFFERENCE(a, b, t, v, vres)                             \
 304     CHECK_DIFFERENCE (a, b, t, v, vres);                                  \
 305     CHECK_SDIFFERENCE_WRAPV (a, b, t, v, vres)
 306   #define CHECK_SDIFFERENCE_WRAPV(a, b, t, v, vres)                       \
 307     {                                                                     \
 308       t result;                                                           \
 309       ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v));                 \
 310       ASSERT (result == ((v) ? (vres) : ((a) - (b))));                    \
 311     }
 312   CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1,
 313                     INT_MAX - 1u);
 314   CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1);
 315   CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1);
 316   CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1);
 317   CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u);
 318   CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u);
 319   CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN);
 320   CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX);
 321   CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN);
 322   CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX);
 323   CHECK_SDIFFERENCE_WRAPV (-1, 1u, int, false, DONTCARE);
 324   CHECK_SDIFFERENCE_WRAPV (-1, 1ul, int, false, DONTCARE);
 325   CHECK_SDIFFERENCE_WRAPV (-1l, 1u, int, false, DONTCARE);
 326   CHECK_SDIFFERENCE_WRAPV (0u, INT_MAX, int, false, DONTCARE);
 327   CHECK_SDIFFERENCE_WRAPV (1u, INT_MIN, int, true, 1u - INT_MIN);
 328   {
 329     long int result;
 330     ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX));
 331     ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX));
 332   }
 333
 334   #define CHECK_PRODUCT(a, b, t, v, vres)                                 \
 335     CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
 336     CHECK_PRODUCT1 (b, a, t, v, vres)
 337   #define CHECK_SPRODUCT(a, b, t, v, vres)                                \
 338     CHECK_SPRODUCT1 (a, b, t, v, vres);                                   \
 339     CHECK_SPRODUCT1 (b, a, t, v, vres)
 340   #define CHECK_SPRODUCT_WRAPV(a, b, t, v, vres)                          \
 341     CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres);                             \
 342     CHECK_SPRODUCT_WRAPV1 (b, a, t, v, vres)
 343   #define CHECK_PRODUCT1(a, b, t, v, vres)                                \
 344     VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v))
 345   #define CHECK_SPRODUCT1(a, b, t, v, vres)                               \
 346     CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
 347     CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres)
 348   #define CHECK_SPRODUCT_WRAPV1(a, b, t, v, vres)                         \
 349     {                                                                     \
 350       t result;                                                           \
 351       ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v));                 \
 352       ASSERT (result == ((v) ? (vres) : ((a) * (b))));                    \
 353     }
 354   CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u);
 355   CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 356   CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX);
 357   CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN);
 358   CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE);
 359   CHECK_SPRODUCT (0, -1, int, false, DONTCARE);
 360   CHECK_SPRODUCT (0, 0, int, false, DONTCARE);
 361   CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE);
 362   CHECK_SPRODUCT (0, 1, int, false, DONTCARE);
 363   CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE);
 364   CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE);
 365   CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE);
 366   CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE);
 367   CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE);
 368   CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE);
 369   CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE);
 370   CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE);
 371   CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE);
 372   CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE);
 373   CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE);
 374   CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE);
 375   CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE);
 376   CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN);
 377   CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX);
 378   CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX);
 379   CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true,
 380                  INT_MAX * ULONG_MAX);
 381 #if !defined __HP_cc
 382   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN);
 383   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE);
 384 #endif
 385   CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX);
 386   CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true,
 387                  INT_MIN * ULONG_MAX);
 388   CHECK_SPRODUCT_WRAPV (-1, INT_MAX + 1u, int, false, DONTCARE);
 389   CHECK_SPRODUCT_WRAPV (-1, 1u, int, false, DONTCARE);
 390   CHECK_SPRODUCT (0, ULONG_MAX, int, false, DONTCARE);
 391   CHECK_SPRODUCT (0u, LONG_MIN, int, false, DONTCARE);
 392   {
 393     long int result;
 394     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
 395             == (LONG_MAX / INT_MAX < INT_MAX));
 396     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
 397             || result == INT_MAX * (long int) INT_MAX);
 398     ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result)
 399             || result == INT_MIN * (long int) INT_MIN);
 400   }
 401
 402 # ifdef LLONG_MAX
 403   {
 404     long long int result;
 405     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
 406             == (LLONG_MAX / LONG_MAX < LONG_MAX));
 407     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
 408             || result == LONG_MAX * (long long int) LONG_MAX);
 409     ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result)
 410             || result == LONG_MIN * (long long int) LONG_MIN);
 411   }
 412 # endif
 413
 414   /* Check for GCC bug 91450.  */
 415   {
 416     unsigned long long result;
 417     ASSERT (INT_MULTIPLY_WRAPV (int_minus_2, int_1, &result) && result == -2);
 418   }
 419
 420   #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v))
 421
 422   CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN);
 423   CHECK_QUOTIENT (INT_MIN, UINT_MAX, false);
 424   CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false);
 425   CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false);
 426   CHECK_QUOTIENT (-11, 10u, true);
 427   CHECK_QUOTIENT (-10, 10u, true);
 428   CHECK_QUOTIENT (-9, 10u, false);
 429   CHECK_QUOTIENT (11u, -10, true);
 430   CHECK_QUOTIENT (10u, -10, true);
 431   CHECK_QUOTIENT (9u, -10, false);
 432
 433   #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v))
 434
 435   CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN);
 436   CHECK_REMAINDER (-1, UINT_MAX, true);
 437   CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true);
 438   CHECK_REMAINDER (INTMAX_MIN, UINT_MAX,
 439                    (INTMAX_MAX < UINT_MAX
 440                     && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
 441   CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1);
 442   CHECK_REMAINDER (1u, -1, false);
 443   CHECK_REMAINDER (37*39u, -39, false);
 444   CHECK_REMAINDER (37*39u + 1, -39, true);
 445   CHECK_REMAINDER (37*39u - 1, -39, true);
 446   CHECK_REMAINDER (LONG_MAX, -INT_MAX, false);
 447
 448   return test_exit_status;
 449 }