LCOV - code coverage report
Current view: top level - gltests - test-intprops.c (source / functions) Hit Total Coverage
Test: GNU Libidn Lines: 46 46 100.0 %
Date: 2016-07-20 19:34:35 Functions: 1 1 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* Test intprops.h.
       2             :    Copyright (C) 2011-2016 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 <http://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             : /* VERIFY (X) uses a static assertion for compilers that are known to work,
      43             :    and falls back on a dynamic assertion for other compilers.
      44             :    These tests should be checkable via 'verify' rather than 'ASSERT', but
      45             :    using 'verify' would run into a bug with HP-UX 11.23 cc; see
      46             :    <http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00401.html>.  */
      47             : #if __GNUC__ || __SUNPRO_C
      48             : # define VERIFY(x) do { verify (x); } while (0)
      49             : #else
      50             : # define VERIFY(x) ASSERT (x)
      51             : #endif
      52             : 
      53             : #define DONTCARE __LINE__
      54             : 
      55             : int
      56           1 : main (void)
      57             : {
      58             :   /* Use VERIFY for tests that must be integer constant expressions,
      59             :      ASSERT otherwise.  */
      60             : 
      61             :   /* TYPE_IS_INTEGER.  */
      62             :   ASSERT (TYPE_IS_INTEGER (bool));
      63             :   ASSERT (TYPE_IS_INTEGER (char));
      64             :   ASSERT (TYPE_IS_INTEGER (signed char));
      65             :   ASSERT (TYPE_IS_INTEGER (unsigned char));
      66             :   ASSERT (TYPE_IS_INTEGER (short int));
      67             :   ASSERT (TYPE_IS_INTEGER (unsigned short int));
      68             :   ASSERT (TYPE_IS_INTEGER (int));
      69             :   ASSERT (TYPE_IS_INTEGER (unsigned int));
      70             :   ASSERT (TYPE_IS_INTEGER (long int));
      71             :   ASSERT (TYPE_IS_INTEGER (unsigned long int));
      72             :   ASSERT (TYPE_IS_INTEGER (intmax_t));
      73             :   ASSERT (TYPE_IS_INTEGER (uintmax_t));
      74             :   ASSERT (! TYPE_IS_INTEGER (float));
      75             :   ASSERT (! TYPE_IS_INTEGER (double));
      76             :   ASSERT (! TYPE_IS_INTEGER (long double));
      77             : 
      78             :   /* TYPE_SIGNED.  */
      79             :   /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */
      80             :   VERIFY (TYPE_SIGNED (signed char));
      81             :   VERIFY (! TYPE_SIGNED (unsigned char));
      82             :   VERIFY (TYPE_SIGNED (short int));
      83             :   VERIFY (! TYPE_SIGNED (unsigned short int));
      84             :   VERIFY (TYPE_SIGNED (int));
      85             :   VERIFY (! TYPE_SIGNED (unsigned int));
      86             :   VERIFY (TYPE_SIGNED (long int));
      87             :   VERIFY (! TYPE_SIGNED (unsigned long int));
      88             :   VERIFY (TYPE_SIGNED (intmax_t));
      89             :   VERIFY (! TYPE_SIGNED (uintmax_t));
      90             :   ASSERT (TYPE_SIGNED (float));
      91             :   ASSERT (TYPE_SIGNED (double));
      92             :   ASSERT (TYPE_SIGNED (long double));
      93             : 
      94             :   /* Integer representation.  Check that it is two's complement.  */
      95             :   VERIFY (INT_MIN + INT_MAX < 0);
      96             : 
      97             :   /* TYPE_MINIMUM, TYPE_MAXIMUM.  */
      98             :   VERIFY (TYPE_MINIMUM (char) == CHAR_MIN);
      99             :   VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX);
     100             :   VERIFY (TYPE_MINIMUM (unsigned char) == 0);
     101             :   VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX);
     102             :   VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN);
     103             :   VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX);
     104             :   VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN);
     105             :   VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX);
     106             :   VERIFY (TYPE_MINIMUM (unsigned short int) == 0);
     107             :   VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX);
     108             :   VERIFY (TYPE_MINIMUM (int) == INT_MIN);
     109             :   VERIFY (TYPE_MAXIMUM (int) == INT_MAX);
     110             :   VERIFY (TYPE_MINIMUM (unsigned int) == 0);
     111             :   VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX);
     112             :   VERIFY (TYPE_MINIMUM (long int) == LONG_MIN);
     113             :   VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX);
     114             :   VERIFY (TYPE_MINIMUM (unsigned long int) == 0);
     115             :   VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX);
     116             :   VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN);
     117             :   VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX);
     118             :   VERIFY (TYPE_MINIMUM (uintmax_t) == 0);
     119             :   VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX);
     120             : 
     121             :   /* INT_BITS_STRLEN_BOUND.  */
     122             :   VERIFY (INT_BITS_STRLEN_BOUND (1) == 1);
     123             :   VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789);
     124             : 
     125             :   /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND.  */
     126             :   #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX.  */
     127             :   VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1);
     128             :   VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648"));
     129             :   #endif
     130             :   #ifdef INT64_MAX
     131             :   VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1);
     132             :   VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808"));
     133             :   #endif
     134             : 
     135             :   /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as
     136             :      INT_<op>_OVERFLOW tests, so define macros to do both.  OP is the
     137             :      operation, OPNAME its symbolic name, A and B its operands, T the
     138             :      result type, V the overflow flag, and VRES the result if V and if
     139             :      two's complement.  CHECK_BINOP is for most binary operatinos,
     140             :      CHECK_SBINOP for binary +, -, * when the result type is signed,
     141             :      and CHECK_UNOP for unary operations.  */
     142             :   #define CHECK_BINOP(op, opname, a, b, t, v, vres)                       \
     143             :     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t),        \
     144             :                                            TYPE_MAXIMUM (t))              \
     145             :             == (v));                                                      \
     146             :     VERIFY (INT_##opname##_OVERFLOW (a, b) == (v))
     147             :   #define CHECK_SBINOP(op, opname, a, b, t, v, vres)                      \
     148             :     CHECK_BINOP(op, opname, a, b, t, v, vres);                            \
     149             :     {                                                                     \
     150             :       t result;                                                           \
     151             :       ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v));               \
     152             :       ASSERT (result == ((v) ? (vres) : ((a) op (b))));                   \
     153             :     }
     154             :   #define CHECK_UNOP(op, opname, a, t, v)                                 \
     155             :     VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t),           \
     156             :                                            TYPE_MAXIMUM (t))              \
     157             :             == (v));                                                      \
     158             :     VERIFY (INT_##opname##_OVERFLOW (a) == (v))
     159             : 
     160             :   /* INT_<op>_RANGE_OVERFLOW, INT_<op>_OVERFLOW.  */
     161             :   VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX));
     162             :   VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1));
     163             : 
     164           1 :   CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN);
     165           1 :   CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1);
     166           1 :   CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1);
     167           1 :   CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX);
     168             :   CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u);
     169             :   CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u);
     170             : 
     171           1 :   CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1);
     172           1 :   CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN);
     173           1 :   CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX);
     174           1 :   CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1);
     175             :   CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u);
     176             :   CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u);
     177             : 
     178             :   CHECK_UNOP (-, NEGATE, INT_MIN, int, true);
     179             :   CHECK_UNOP (-, NEGATE, 0, int, false);
     180             :   CHECK_UNOP (-, NEGATE, INT_MAX, int, false);
     181             :   CHECK_UNOP (-, NEGATE, 0u, unsigned int, false);
     182             :   CHECK_UNOP (-, NEGATE, 1u, unsigned int, true);
     183             :   CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true);
     184             : 
     185           1 :   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1);
     186           1 :   CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN);
     187           1 :   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN);
     188           1 :   CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0);
     189           1 :   CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int,
     190             :                 INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
     191           1 :   CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX,
     192             :                 long int, false, LONG_MIN - LONG_MIN % INT_MAX);
     193             : 
     194             :   CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int,
     195             :                INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
     196             :   CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX);
     197             :   CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int,
     198             :                false, INT_MIN / -1u);
     199             : 
     200             :   CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0);
     201             :   CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0);
     202             :   CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int,
     203             :                false, INT_MIN % -1u);
     204             : 
     205             :   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1);
     206             :   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true,
     207             :                (UINT_MAX / 2 + 1) << 1);
     208             :   CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false,
     209             :                (UINT_MAX / 2) << 1);
     210             : 
     211             :   /* INT_<op>_OVERFLOW and INT_<op>_WRAPV with mixed types.  */
     212             :   #define CHECK_SUM(a, b, t, v, vres)                                     \
     213             :     CHECK_SUM1(a, b, t, v, vres);                                         \
     214             :     CHECK_SUM1(b, a, t, v, vres)
     215             :   #define CHECK_SSUM(a, b, t, v, vres)                                    \
     216             :     CHECK_SSUM1(a, b, t, v, vres);                                        \
     217             :     CHECK_SSUM1(b, a, t, v, vres)
     218             :   #define CHECK_SUM1(a, b, t, v, vres)                                    \
     219             :     VERIFY (INT_ADD_OVERFLOW (a, b) == (v))
     220             :   #define CHECK_SSUM1(a, b, t, v, vres)                                   \
     221             :     CHECK_SUM1(a, b, t, v, vres);                                         \
     222             :     {                                                                     \
     223             :       t result;                                                           \
     224             :       ASSERT (INT_ADD_WRAPV (a, b, &result) == (v));                      \
     225             :       ASSERT (result == ((v) ? (vres) : ((a) + (b))));                    \
     226             :     }
     227           1 :   CHECK_SSUM (-1, LONG_MIN, long int, true, LONG_MAX);
     228             :   CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE);
     229           1 :   CHECK_SSUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN,
     230             :               INT_MIN == LONG_MIN ? INT_MAX : DONTCARE);
     231             :   CHECK_SUM (0u, -1, unsigned int, true, 0u + -1);
     232             :   CHECK_SUM (0u, 0, unsigned int, false, DONTCARE);
     233             :   CHECK_SUM (0u, 1, unsigned int, false, DONTCARE);
     234           1 :   CHECK_SSUM (1, LONG_MAX, long int, true, LONG_MIN);
     235             :   CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u);
     236           1 :   CHECK_SSUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX,
     237             :               INT_MAX == LONG_MAX ? INT_MIN : DONTCARE);
     238             :   CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX);
     239             :   CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN);
     240             :   {
     241             :     long int result;
     242           1 :     ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX));
     243           1 :     ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN));
     244             :   }
     245             : 
     246             :   #define CHECK_DIFFERENCE(a, b, t, v, vres)                              \
     247             :     VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v))
     248             :   #define CHECK_SDIFFERENCE(a, b, t, v, vres)                             \
     249             :     CHECK_DIFFERENCE(a, b, t, v, vres);                                   \
     250             :     {                                                                     \
     251             :       t result;                                                           \
     252             :       ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v));                 \
     253             :       ASSERT (result == ((v) ? (vres) : ((a) - (b))));                    \
     254             :     }
     255             :   CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1,
     256             :                     INT_MAX - 1u);
     257             :   CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1);
     258             :   CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1);
     259             :   CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1);
     260             :   CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u);
     261             :   CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u);
     262           1 :   CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN);
     263           1 :   CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX);
     264           1 :   CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN);
     265           1 :   CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX);
     266             :   {
     267             :     long int result;
     268           1 :     ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX));
     269           1 :     ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX));
     270             :   }
     271             : 
     272             :   #define CHECK_PRODUCT(a, b, t, v, vres)                                 \
     273             :     CHECK_PRODUCT1(a, b, t, v, vres);                                     \
     274             :     CHECK_PRODUCT1(b, a, t, v, vres)
     275             :   #define CHECK_SPRODUCT(a, b, t, v, vres)                                \
     276             :     CHECK_SPRODUCT1(a, b, t, v, vres);                                    \
     277             :     CHECK_SPRODUCT1(b, a, t, v, vres)
     278             :   #define CHECK_PRODUCT1(a, b, t, v, vres)                                \
     279             :     VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v))
     280             :   #define CHECK_SPRODUCT1(a, b, t, v, vres)                               \
     281             :     CHECK_PRODUCT1(a, b, t, v, vres);                                     \
     282             :     {                                                                     \
     283             :       t result;                                                           \
     284             :       ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v));                 \
     285             :       ASSERT (result == ((v) ? (vres) : ((a) * (b))));                    \
     286             :     }
     287             :   CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u);
     288           1 :   CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN);
     289             :   CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX);
     290           1 :   CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN);
     291           1 :   CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE);
     292           1 :   CHECK_SPRODUCT (0, -1, int, false, DONTCARE);
     293           1 :   CHECK_SPRODUCT (0, 0, int, false, DONTCARE);
     294             :   CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE);
     295           1 :   CHECK_SPRODUCT (0, 1, int, false, DONTCARE);
     296           1 :   CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE);
     297           1 :   CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE);
     298             :   CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE);
     299             :   CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE);
     300             :   CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE);
     301             :   CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE);
     302             :   CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE);
     303             :   CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE);
     304             :   CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE);
     305             :   CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE);
     306           1 :   CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE);
     307           1 :   CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE);
     308             :   CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE);
     309             :   CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN);
     310             :   CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX);
     311             :   CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX);
     312             :   CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true,
     313             :                  INT_MAX * ULONG_MAX);
     314           1 :   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN);
     315           1 :   CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE);
     316             :   CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX);
     317             :   CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true,
     318             :                  INT_MIN * ULONG_MAX);
     319             :   {
     320             :     long int result;
     321           1 :     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
     322             :             == (LONG_MAX / INT_MAX < INT_MAX));
     323           1 :     ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result)
     324             :             || result == INT_MAX * (long int) INT_MAX);
     325           1 :     ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result)
     326             :             || result == INT_MIN * (long int) INT_MIN);
     327             :   }
     328             : 
     329             : # ifdef LLONG_MAX
     330             :   {
     331             :     long long int result;
     332           1 :     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
     333             :             == (LLONG_MAX / LONG_MAX < LONG_MAX));
     334           1 :     ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result)
     335             :             || result == LONG_MAX * (long long int) LONG_MAX);
     336           1 :     ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result)
     337             :             || result == LONG_MIN * (long long int) LONG_MIN);
     338             :   }
     339             : # endif
     340             : 
     341             :   #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v))
     342             : 
     343             :   CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN);
     344             :   CHECK_QUOTIENT (INT_MIN, UINT_MAX, false);
     345             :   CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false);
     346             :   CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false);
     347             :   CHECK_QUOTIENT (-11, 10u, true);
     348             :   CHECK_QUOTIENT (-10, 10u, true);
     349             :   CHECK_QUOTIENT (-9, 10u, false);
     350             :   CHECK_QUOTIENT (11u, -10, true);
     351             :   CHECK_QUOTIENT (10u, -10, true);
     352             :   CHECK_QUOTIENT (9u, -10, false);
     353             : 
     354             :   #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v))
     355             : 
     356             :   CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN);
     357             :   CHECK_REMAINDER (-1, UINT_MAX, true);
     358             :   CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true);
     359             :   CHECK_REMAINDER (INTMAX_MIN, UINT_MAX,
     360             :                    (INTMAX_MAX < UINT_MAX
     361             :                     && - (unsigned int) INTMAX_MIN % UINT_MAX != 0));
     362             :   CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1);
     363             :   CHECK_REMAINDER (1u, -1, false);
     364             :   CHECK_REMAINDER (37*39u, -39, false);
     365             :   CHECK_REMAINDER (37*39u + 1, -39, true);
     366             :   CHECK_REMAINDER (37*39u - 1, -39, true);
     367             :   CHECK_REMAINDER (LONG_MAX, -INT_MAX, false);
     368             : 
     369           1 :   return 0;
     370             : }

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