tests/test-intprops.c

   1 /* Test intprops.h.
   2    Copyright (C) 2011-2024 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 #ifdef TEST_STDCKDINT
  34 # include <stdckdint.h>
  35 #else
  36 # include "intprops.h"
  37 #endif
  38
  39 #include <inttypes.h>
  40 #include <limits.h>
  41
  42 #include "macros.h"
  43
  44 /* Compile-time verification of expression X.
  45    In this file, we need it as a statement, rather than as a declaration.  */
  46 #define verify_stmt(x) do { static_assert (x); } while (0)
  47
  48 /* VERIFY (X) uses a static assertion for compilers that are known to work,
  49    and falls back on a dynamic assertion for other compilers.
  50    But it ignores X if testing stdckdint.h.
  51    These tests should be checkable via 'verify' rather than 'ASSERT', but
  52    using 'verify' would run into a bug with HP-UX 11.23 cc; see
  53    <https://lists.gnu.org/r/bug-gnulib/2011-05/msg00401.html>.  */
  54 #ifdef TEST_STDCKDINT
  55 # define VERIFY(x) ((void) 0)
  56 #elif __GNUC__ || __clang__ || __SUNPRO_C
  57 # define VERIFY(x) verify_stmt (x)
  58 #else
  59 # define VERIFY(x) ASSERT (x)
  60 #endif
  61
  62 #define DONTCARE __LINE__
  63
  64 int int_minus_2 = -2;
  65 int int_1 = 1;
  66
  67 int
  68 main (void)
  69 {
  70   /* Use VERIFY for tests that must be integer constant expressions,
  71      ASSERT otherwise.  */
  72
  73 #ifndef TEST_STDCKDINT
  74   /* TYPE_IS_INTEGER.  */
  75   ASSERT (TYPE_IS_INTEGER (bool));
  76   ASSERT (TYPE_IS_INTEGER (char));
  77   ASSERT (TYPE_IS_INTEGER (signed char));
  78   ASSERT (TYPE_IS_INTEGER (unsigned char));
  79   ASSERT (TYPE_IS_INTEGER (short int));
  80   ASSERT (TYPE_IS_INTEGER (unsigned short int));
  81   ASSERT (TYPE_IS_INTEGER (int));
  82   ASSERT (TYPE_IS_INTEGER (unsigned int));
  83   ASSERT (TYPE_IS_INTEGER (long int));
  84   ASSERT (TYPE_IS_INTEGER (unsigned long int));
  85   ASSERT (TYPE_IS_INTEGER (intmax_t));
  86   ASSERT (TYPE_IS_INTEGER (uintmax_t));
  87   ASSERT (! TYPE_IS_INTEGER (float));
  88   ASSERT (! TYPE_IS_INTEGER (double));
  89   ASSERT (! TYPE_IS_INTEGER (long double));
  90
  91   /* TYPE_SIGNED.  */
  92   /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */
  93   VERIFY (TYPE_SIGNED (signed char));
  94   VERIFY (! TYPE_SIGNED (unsigned char));
  95   VERIFY (TYPE_SIGNED (short int));
  96   VERIFY (! TYPE_SIGNED (unsigned short int));
  97   VERIFY (TYPE_SIGNED (int));
  98   VERIFY (! TYPE_SIGNED (unsigned int));
  99   VERIFY (TYPE_SIGNED (long int));
 100   VERIFY (! TYPE_SIGNED (unsigned long int));
 101   VERIFY (TYPE_SIGNED (intmax_t));
 102   VERIFY (! TYPE_SIGNED (uintmax_t));
 103   ASSERT (TYPE_SIGNED (float));
 104   ASSERT (TYPE_SIGNED (double));
 105   ASSERT (TYPE_SIGNED (long double));
 106
 107   /* Integer representation.  Check that it is two's complement.  */
 108   VERIFY (INT_MIN + INT_MAX < 0);
 109
 110   /* TYPE_MINIMUM, TYPE_MAXIMUM.  */
 111   VERIFY (TYPE_MINIMUM (char) == CHAR_MIN);
 112   VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX);
 113   VERIFY (TYPE_MINIMUM (unsigned char) == 0);
 114   VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
 115   VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN);
 116   VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
 117   VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN);
 118   VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX);
 119   VERIFY (TYPE_MINIMUM (unsigned short int) == 0);
 120   VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
 121   VERIFY (TYPE_MINIMUM (int) == INT_MIN);
 122   VERIFY (TYPE_MAXIMUM (int) == INT_MAX);
 123   VERIFY (TYPE_MINIMUM (unsigned int) == 0);
 124   VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
 125   VERIFY (TYPE_MINIMUM (long int) == LONG_MIN);
 126   VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX);
 127   VERIFY (TYPE_MINIMUM (unsigned long int) == 0);
 128   VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
 129   #ifdef LLONG_MAX
 130    verify_stmt (TYPE_MINIMUM (long long int) == LLONG_MIN);
 131    verify_stmt (TYPE_MAXIMUM (long long int) == LLONG_MAX);
 132    verify_stmt (TYPE_MINIMUM (unsigned long long int) == 0);
 133    verify_stmt (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX);
 134   #endif
 135   VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
 136   VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
 137   VERIFY (TYPE_MINIMUM (uintmax_t) == 0);
 138   VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
 139
 140   /* TYPE_WIDTH.  */
 141   #ifdef CHAR_WIDTH
 142    verify_stmt (TYPE_WIDTH (char) == CHAR_WIDTH);
 143    verify_stmt (TYPE_WIDTH (signed char) == SCHAR_WIDTH);
 144    verify_stmt (TYPE_WIDTH (unsigned char) == UCHAR_WIDTH);
 145    verify_stmt (TYPE_WIDTH (short int) == SHRT_WIDTH);
 146    verify_stmt (TYPE_WIDTH (unsigned short int) == USHRT_WIDTH);
 147    verify_stmt (TYPE_WIDTH (int) == INT_WIDTH);
 148    verify_stmt (TYPE_WIDTH (unsigned int) == UINT_WIDTH);
 149    verify_stmt (TYPE_WIDTH (long int) == LONG_WIDTH);
 150    verify_stmt (TYPE_WIDTH (unsigned long int) == ULONG_WIDTH);
 151    #ifdef LLONG_WIDTH
 152     verify_stmt (TYPE_WIDTH (long long int) == LLONG_WIDTH);
 153     verify_stmt (TYPE_WIDTH (unsigned long long int) == ULLONG_WIDTH);
 154    #endif
 155   #endif
 156
 157   /* INT_BITS_STRLEN_BOUND.  */
 158   VERIFY (INT_BITS_STRLEN_BOUND (1) == 1);
 159   VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789);
 160
 161   /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND.  */
 162   #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX.  */
 163   VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
 164   VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
 165   #endif
 166   #ifdef INT64_MAX
 167   VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
 168   VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
 169   #endif
 170 #endif
 171
 172   /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
 173      INT_<op>_OVERFLOW tests, so define macros to do both.  OP is the
 174      operation, OPNAME its symbolic name, A and B its operands, T the
 175      result type, V the overflow flag, and VRES the result if V and if
 176      two's complement.  CHECK_BINOP is for most binary operations,
 177      CHECK_SBINOP for binary +, -, * when the result type is signed,
 178      and CHECK_UNOP for unary operations.  */
 179   #define CHECK_BINOP(op, opname, a, b, t, v, vres)                       \
 180     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t),        \
 181                                            TYPE_MAXIMUM (t))              \
 182             == (v));                                                      \
 183     VERIFY (INT_##opname##_OVERFLOW (a, b) == (v))
 184   #define CHECK_SBINOP(op, opname, a, b, t, v, vres)                      \
 185     CHECK_BINOP(op, opname, a, b, t, v, vres);                            \
 186     {                                                                     \
 187       t result;                                                           \
 188       ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v));               \
 189       ASSERT (result == ((v) ? (vres) : ((a) op (b))));                   \
 190     }
 191   #define CHECK_UNOP(op, opname, a, t, v)                                 \
 192     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t),           \
 193                                            TYPE_MAXIMUM (t))              \
 194             == (v));                                                      \
 195     VERIFY (INT_##opname##_OVERFLOW (a) == (v))
 196
 197   /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW.  */
 198   VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
 199   VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1));
 200
 201   CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN);
 202   CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1);
 203   CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1);
 204   CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX);
 205   CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u);
 206   CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u);
 207
 208   CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1);
 209   CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN);
 210   CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX);
 211   CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1);
 212   CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u);
 213   CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u);
 214
 215   CHECK_UNOP (-, NEGATE, INT_MIN, int, true);
 216   CHECK_UNOP (-, NEGATE, 0, int, false);
 217   CHECK_UNOP (-, NEGATE, INT_MAX, int, false);
 218   CHECK_UNOP (-, NEGATE, 0u, unsigned int, false);
 219   CHECK_UNOP (-, NEGATE, 1u, unsigned int, true);
 220   CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true);
 221
 222   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1);
 223   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN);
 224   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN);
 225   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0);
 226   CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int,
 227                 INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 228 #if !defined __HP_cc
 229   CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
 230                 long int, false, LONG_MIN - LONG_MIN % INT_MAX);
 231 #endif
 232
 233   CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int,
 234                INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 235   CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX);
 236   CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int,
 237                false, INT_MIN / -1u);
 238
 239   CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0);
 240   CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0);
 241   CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int,
 242                false, INT_MIN % -1u);
 243
 244   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1);
 245   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true,
 246                (UINT_MAX / 2 + 1) << 1);
 247   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false,
 248                (UINT_MAX / 2) << 1);
 249
 250   /* INT_<op>_OVERFLOW and INT_<op>_WRAPV with mixed types.  */
 251   #define CHECK_SUM(a, b, t, v, vres)                                     \
 252     CHECK_SUM1 (a, b, t, v, vres);                                        \
 253     CHECK_SUM1 (b, a, t, v, vres)
 254   #define CHECK_SUM_WRAPV(a, b, t, v, vres, okres)                        \
 255     CHECK_SUM_WRAPV1 (a, b, t, v, vres, okres);                           \
 256     CHECK_SUM_WRAPV1 (b, a, t, v, vres, okres)
 257   #define CHECK_SUM1(a, b, t, v, vres)                                    \
 258     VERIFY (INT_ADD_OVERFLOW (a, b) == (v));                              \
 259     CHECK_SUM_WRAPV1 (a, b, t, v, vres, (a) + (b))
 260   #define CHECK_SUM_WRAPV1(a, b, t, v, vres, okres)                       \
 261     {                                                                     \
 262       t result;                                                           \
 263       ASSERT (INT_ADD_WRAPV (a, b, &result) == (v));                      \
 264       ASSERT (result == ((v) ? (vres) : (okres)));                        \
 265     }
 266   CHECK_SUM (-1, LONG_MIN, long int, true, LONG_MAX);
 267   CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE);
 268   CHECK_SUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN,
 269               INT_MIN == LONG_MIN ? INT_MAX : DONTCARE);
 270   CHECK_SUM (0u, -1, unsigned int, true, 0u + -1);
 271   CHECK_SUM (0u, 0, unsigned int, false, DONTCARE);
 272   CHECK_SUM (0u, 1, unsigned int, false, DONTCARE);
 273   CHECK_SUM (1, LONG_MAX, long int, true, LONG_MIN);
 274   CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u);
 275   CHECK_SUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX,
 276               INT_MAX == LONG_MAX ? INT_MIN : DONTCARE);
 277   CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX);
 278   CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN);
 279   CHECK_SUM_WRAPV (-1, 1u, int, false, DONTCARE, 0);
 280   CHECK_SUM_WRAPV (-1, 1ul, int, false, DONTCARE, 0);
 281   CHECK_SUM_WRAPV (-1l, 1u, int, false, DONTCARE, 0);
 282   CHECK_SUM_WRAPV (-100, 1000u, int, false, DONTCARE, 900);
 283   CHECK_SUM_WRAPV (INT_MIN, UINT_MAX, int, false, DONTCARE, INT_MAX);
 284   CHECK_SUM_WRAPV (1u, INT_MAX, int, true, INT_MIN, DONTCARE);
 285   CHECK_SUM_WRAPV (INT_MAX, 1, long int, LONG_MAX <= INT_MAX, INT_MIN,
 286                    INT_MAX + 1L);
 287   CHECK_SUM_WRAPV (UINT_MAX, 1, long int, LONG_MAX <= UINT_MAX, 0,
 288                    UINT_MAX + 1L);
 289   CHECK_SUM_WRAPV (INT_MAX, 1, unsigned long int, ULONG_MAX <= INT_MAX, 0,
 290                    INT_MAX + 1uL);
 291   CHECK_SUM_WRAPV (UINT_MAX, 1, unsigned long int, ULONG_MAX <= UINT_MAX, 0,
 292                    UINT_MAX + 1uL);
 293
 294   {
 295     long int result;
 296     ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX));
 297     ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN));
 298   }
 299
 300   #define CHECK_DIFFERENCE(a, b, t, v, vres)                              \
 301     VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v))
 302   #define CHECK_SDIFFERENCE(a, b, t, v, vres)                             \
 303     CHECK_DIFFERENCE (a, b, t, v, vres);                                  \
 304     CHECK_SDIFFERENCE_WRAPV (a, b, t, v, vres)
 305   #define CHECK_SDIFFERENCE_WRAPV(a, b, t, v, vres)                       \
 306     {                                                                     \
 307       t result;                                                           \
 308       ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v));                 \
 309       ASSERT (result == ((v) ? (vres) : ((a) - (b))));                    \
 310     }
 311   CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1,
 312                     INT_MAX - 1u);
 313   CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1);
 314   CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1);
 315   CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1);
 316   CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u);
 317   CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u);
 318   CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN);
 319   CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX);
 320   CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN);
 321   CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX);
 322   CHECK_SDIFFERENCE_WRAPV (-1, 1u, int, false, DONTCARE);
 323   CHECK_SDIFFERENCE_WRAPV (-1, 1ul, int, false, DONTCARE);
 324   CHECK_SDIFFERENCE_WRAPV (-1l, 1u, int, false, DONTCARE);
 325   CHECK_SDIFFERENCE_WRAPV (0u, INT_MAX, int, false, DONTCARE);
 326   CHECK_SDIFFERENCE_WRAPV (1u, INT_MIN, int, true, 1u - INT_MIN);
 327   {
 328     long int result;
 329     ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX));
 330     ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX));
 331   }
 332
 333   #define CHECK_PRODUCT(a, b, t, v, vres)                                 \
 334     CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
 335     CHECK_PRODUCT1 (b, a, t, v, vres)
 336   #define CHECK_SPRODUCT(a, b, t, v, vres)                                \
 337     CHECK_SPRODUCT1 (a, b, t, v, vres);                                   \
 338     CHECK_SPRODUCT1 (b, a, t, v, vres)
 339   #define CHECK_SPRODUCT_WRAPV(a, b, t, v, vres)                          \
 340     CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres);                             \
 341     CHECK_SPRODUCT_WRAPV1 (b, a, t, v, vres)
 342   #define CHECK_PRODUCT1(a, b, t, v, vres)                                \
 343     VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v))
 344   #define CHECK_SPRODUCT1(a, b, t, v, vres)                               \
 345     CHECK_PRODUCT1 (a, b, t, v, vres);                                    \
 346     CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres)
 347   #define CHECK_SPRODUCT_WRAPV1(a, b, t, v, vres)                         \
 348     {                                                                     \
 349       t result;                                                           \
 350       ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v));                 \
 351       ASSERT (result == ((v) ? (vres) : ((a) * (b))));                    \
 352     }
 353   CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u);
 354   CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
 355   CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX);
 356   CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN);
 357   CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE);
 358   CHECK_SPRODUCT (0, -1, int, false, DONTCARE);
 359   CHECK_SPRODUCT (0, 0, int, false, DONTCARE);
 360   CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE);
 361   CHECK_SPRODUCT (0, 1, int, false, DONTCARE);
 362   CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE);
 363   CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE);
 364   CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE);
 365   CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE);
 366   CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE);
 367   CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE);
 368   CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE);
 369   CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE);
 370   CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE);
 371   CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE);
 372   CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE);
 373   CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE);
 374   CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE);
 375   CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN);
 376   CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX);
 377   CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX);
 378   CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true,
 379                  INT_MAX * ULONG_MAX);
 380 #if !defined __HP_cc
 381   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN);
 382   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE);
 383 #endif
 384   CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX);
 385   CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true,
 386                  INT_MIN * ULONG_MAX);
 387   CHECK_SPRODUCT_WRAPV (-1, INT_MAX + 1u, int, false, DONTCARE);
 388   CHECK_SPRODUCT_WRAPV (-1, 1u, int, false, DONTCARE);
 389   CHECK_SPRODUCT (0, ULONG_MAX, int, false, DONTCARE);
 390   CHECK_SPRODUCT (0u, LONG_MIN, int, false, DONTCARE);
 391   {
 392     long int result;
 393     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
 394             == (LONG_MAX / INT_MAX < INT_MAX));
 395     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
 396             || result == INT_MAX * (long int) INT_MAX);
 397     ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result)
 398             || result == INT_MIN * (long int) INT_MIN);
 399   }
 400
 401 # ifdef LLONG_MAX
 402   {
 403     long long int result;
 404     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
 405             == (LLONG_MAX / LONG_MAX < LONG_MAX));
 406     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
 407             || result == LONG_MAX * (long long int) LONG_MAX);
 408     ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result)
 409             || result == LONG_MIN * (long long int) LONG_MIN);
 410   }
 411 # endif
 412
 413   /* Check for GCC bug 91450.  */
 414   {
 415     unsigned long long result;
 416     ASSERT (INT_MULTIPLY_WRAPV (int_minus_2, int_1, &result) && result == -2);
 417   }
 418
 419   #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v))
 420
 421   CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN);
 422   CHECK_QUOTIENT (INT_MIN, UINT_MAX, false);
 423   CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false);
 424   CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false);
 425   CHECK_QUOTIENT (-11, 10u, true);
 426   CHECK_QUOTIENT (-10, 10u, true);
 427   CHECK_QUOTIENT (-9, 10u, false);
 428   CHECK_QUOTIENT (11u, -10, true);
 429   CHECK_QUOTIENT (10u, -10, true);
 430   CHECK_QUOTIENT (9u, -10, false);
 431
 432   #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v))
 433
 434   CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN);
 435   CHECK_REMAINDER (-1, UINT_MAX, true);
 436   CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true);
 437   CHECK_REMAINDER (INTMAX_MIN, UINT_MAX,
 438                    (INTMAX_MAX < UINT_MAX
 439                     && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
 440   CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1);
 441   CHECK_REMAINDER (1u, -1, false);
 442   CHECK_REMAINDER (37*39u, -39, false);
 443   CHECK_REMAINDER (37*39u + 1, -39, true);
 444   CHECK_REMAINDER (37*39u - 1, -39, true);
 445   CHECK_REMAINDER (LONG_MAX, -INT_MAX, false);
 446
 447   return test_exit_status;
 448 }