/* Test intprops.h. Copyright (C) 2011-2024 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /* Written by Paul Eggert. */ #include #if _GL_GNUC_PREREQ (4, 3) /* Tell gcc not to warn about the long expressions that the overflow macros expand to, or about the (X < 0) expressions. */ # pragma GCC diagnostic ignored "-Woverlength-strings" # pragma GCC diagnostic ignored "-Wtype-limits" /* Work around a bug in GCC 6.1 and earlier; see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68971 */ # pragma GCC diagnostic ignored "-Woverflow" #endif #ifdef TEST_STDCKDINT # include #else # include "intprops.h" #endif #include #include #include "macros.h" /* Compile-time verification of expression X. In this file, we need it as a statement, rather than as a declaration. */ #define verify_stmt(x) do { static_assert (x); } while (0) /* VERIFY (X) uses a static assertion for compilers that are known to work, and falls back on a dynamic assertion for other compilers. But it ignores X if testing stdckdint.h. These tests should be checkable via 'verify' rather than 'ASSERT', but using 'verify' would run into a bug with HP-UX 11.23 cc; see . */ #ifdef TEST_STDCKDINT # define VERIFY(x) ((void) 0) #elif __GNUC__ || __clang__ || __SUNPRO_C # define VERIFY(x) verify_stmt (x) #else # define VERIFY(x) ASSERT (x) #endif #define DONTCARE __LINE__ int int_minus_2 = -2; int int_1 = 1; int main (void) { /* Use VERIFY for tests that must be integer constant expressions, ASSERT otherwise. */ #ifndef TEST_STDCKDINT /* TYPE_IS_INTEGER. */ ASSERT (TYPE_IS_INTEGER (bool)); ASSERT (TYPE_IS_INTEGER (char)); ASSERT (TYPE_IS_INTEGER (signed char)); ASSERT (TYPE_IS_INTEGER (unsigned char)); ASSERT (TYPE_IS_INTEGER (short int)); ASSERT (TYPE_IS_INTEGER (unsigned short int)); ASSERT (TYPE_IS_INTEGER (int)); ASSERT (TYPE_IS_INTEGER (unsigned int)); ASSERT (TYPE_IS_INTEGER (long int)); ASSERT (TYPE_IS_INTEGER (unsigned long int)); ASSERT (TYPE_IS_INTEGER (intmax_t)); ASSERT (TYPE_IS_INTEGER (uintmax_t)); ASSERT (! TYPE_IS_INTEGER (float)); ASSERT (! TYPE_IS_INTEGER (double)); ASSERT (! TYPE_IS_INTEGER (long double)); /* TYPE_SIGNED. */ /* VERIFY (! TYPE_SIGNED (bool)); // not guaranteed by gnulib substitute */ VERIFY (TYPE_SIGNED (signed char)); VERIFY (! TYPE_SIGNED (unsigned char)); VERIFY (TYPE_SIGNED (short int)); VERIFY (! TYPE_SIGNED (unsigned short int)); VERIFY (TYPE_SIGNED (int)); VERIFY (! TYPE_SIGNED (unsigned int)); VERIFY (TYPE_SIGNED (long int)); VERIFY (! TYPE_SIGNED (unsigned long int)); VERIFY (TYPE_SIGNED (intmax_t)); VERIFY (! TYPE_SIGNED (uintmax_t)); ASSERT (TYPE_SIGNED (float)); ASSERT (TYPE_SIGNED (double)); ASSERT (TYPE_SIGNED (long double)); /* Integer representation. Check that it is two's complement. */ VERIFY (INT_MIN + INT_MAX < 0); /* TYPE_MINIMUM, TYPE_MAXIMUM. */ VERIFY (TYPE_MINIMUM (char) == CHAR_MIN); VERIFY (TYPE_MAXIMUM (char) == CHAR_MAX); VERIFY (TYPE_MINIMUM (unsigned char) == 0); VERIFY (TYPE_MAXIMUM (unsigned char) == UCHAR_MAX); VERIFY (TYPE_MINIMUM (signed char) == SCHAR_MIN); VERIFY (TYPE_MAXIMUM (signed char) == SCHAR_MAX); VERIFY (TYPE_MINIMUM (short int) == SHRT_MIN); VERIFY (TYPE_MAXIMUM (short int) == SHRT_MAX); VERIFY (TYPE_MINIMUM (unsigned short int) == 0); VERIFY (TYPE_MAXIMUM (unsigned short int) == USHRT_MAX); VERIFY (TYPE_MINIMUM (int) == INT_MIN); VERIFY (TYPE_MAXIMUM (int) == INT_MAX); VERIFY (TYPE_MINIMUM (unsigned int) == 0); VERIFY (TYPE_MAXIMUM (unsigned int) == UINT_MAX); VERIFY (TYPE_MINIMUM (long int) == LONG_MIN); VERIFY (TYPE_MAXIMUM (long int) == LONG_MAX); VERIFY (TYPE_MINIMUM (unsigned long int) == 0); VERIFY (TYPE_MAXIMUM (unsigned long int) == ULONG_MAX); #ifdef LLONG_MAX verify_stmt (TYPE_MINIMUM (long long int) == LLONG_MIN); verify_stmt (TYPE_MAXIMUM (long long int) == LLONG_MAX); verify_stmt (TYPE_MINIMUM (unsigned long long int) == 0); verify_stmt (TYPE_MAXIMUM (unsigned long long int) == ULLONG_MAX); #endif VERIFY (TYPE_MINIMUM (intmax_t) == INTMAX_MIN); VERIFY (TYPE_MAXIMUM (intmax_t) == INTMAX_MAX); VERIFY (TYPE_MINIMUM (uintmax_t) == 0); VERIFY (TYPE_MAXIMUM (uintmax_t) == UINTMAX_MAX); /* TYPE_WIDTH. */ #ifdef CHAR_WIDTH verify_stmt (TYPE_WIDTH (char) == CHAR_WIDTH); verify_stmt (TYPE_WIDTH (signed char) == SCHAR_WIDTH); verify_stmt (TYPE_WIDTH (unsigned char) == UCHAR_WIDTH); verify_stmt (TYPE_WIDTH (short int) == SHRT_WIDTH); verify_stmt (TYPE_WIDTH (unsigned short int) == USHRT_WIDTH); verify_stmt (TYPE_WIDTH (int) == INT_WIDTH); verify_stmt (TYPE_WIDTH (unsigned int) == UINT_WIDTH); verify_stmt (TYPE_WIDTH (long int) == LONG_WIDTH); verify_stmt (TYPE_WIDTH (unsigned long int) == ULONG_WIDTH); #ifdef LLONG_WIDTH verify_stmt (TYPE_WIDTH (long long int) == LLONG_WIDTH); verify_stmt (TYPE_WIDTH (unsigned long long int) == ULLONG_WIDTH); #endif #endif /* INT_BITS_STRLEN_BOUND. */ VERIFY (INT_BITS_STRLEN_BOUND (1) == 1); VERIFY (INT_BITS_STRLEN_BOUND (2620) == 789); /* INT_STRLEN_BOUND, INT_BUFSIZE_BOUND. */ #ifdef INT32_MAX /* POSIX guarantees int32_t; this ports to non-POSIX. */ VERIFY (INT_STRLEN_BOUND (int32_t) == sizeof ("-2147483648") - 1); VERIFY (INT_BUFSIZE_BOUND (int32_t) == sizeof ("-2147483648")); #endif #ifdef INT64_MAX VERIFY (INT_STRLEN_BOUND (int64_t) == sizeof ("-9223372036854775808") - 1); VERIFY (INT_BUFSIZE_BOUND (int64_t) == sizeof ("-9223372036854775808")); #endif #endif /* All the INT__RANGE_OVERFLOW tests are equally valid as INT__OVERFLOW tests, so define macros to do both. OP is the operation, OPNAME its symbolic name, A and B its operands, T the result type, V the overflow flag, and VRES the result if V and if two's complement. CHECK_BINOP is for most binary operations, CHECK_SBINOP for binary +, -, * when the result type is signed, and CHECK_UNOP for unary operations. */ #define CHECK_BINOP(op, opname, a, b, t, v, vres) \ VERIFY (INT_##opname##_RANGE_OVERFLOW (a, b, TYPE_MINIMUM (t), \ TYPE_MAXIMUM (t)) \ == (v)); \ VERIFY (INT_##opname##_OVERFLOW (a, b) == (v)) #define CHECK_SBINOP(op, opname, a, b, t, v, vres) \ CHECK_BINOP(op, opname, a, b, t, v, vres); \ { \ t result; \ ASSERT (INT_##opname##_WRAPV (a, b, &result) == (v)); \ ASSERT (result == ((v) ? (vres) : ((a) op (b)))); \ } #define CHECK_UNOP(op, opname, a, t, v) \ VERIFY (INT_##opname##_RANGE_OVERFLOW (a, TYPE_MINIMUM (t), \ TYPE_MAXIMUM (t)) \ == (v)); \ VERIFY (INT_##opname##_OVERFLOW (a) == (v)) /* INT__RANGE_OVERFLOW, INT__OVERFLOW. */ VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX)); VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1)); CHECK_SBINOP (+, ADD, INT_MAX, 1, int, true, INT_MIN); CHECK_SBINOP (+, ADD, INT_MAX, -1, int, false, INT_MAX - 1); CHECK_SBINOP (+, ADD, INT_MIN, 1, int, false, INT_MIN + 1); CHECK_SBINOP (+, ADD, INT_MIN, -1, int, true, INT_MAX); CHECK_BINOP (+, ADD, UINT_MAX, 1u, unsigned int, true, 0u); CHECK_BINOP (+, ADD, 0u, 1u, unsigned int, false, 1u); CHECK_SBINOP (-, SUBTRACT, INT_MAX, 1, int, false, INT_MAX - 1); CHECK_SBINOP (-, SUBTRACT, INT_MAX, -1, int, true, INT_MIN); CHECK_SBINOP (-, SUBTRACT, INT_MIN, 1, int, true, INT_MAX); CHECK_SBINOP (-, SUBTRACT, INT_MIN, -1, int, false, INT_MIN - -1); CHECK_BINOP (-, SUBTRACT, UINT_MAX, 1u, unsigned int, false, UINT_MAX - 1u); CHECK_BINOP (-, SUBTRACT, 0u, 1u, unsigned int, true, 0u - 1u); CHECK_UNOP (-, NEGATE, INT_MIN, int, true); CHECK_UNOP (-, NEGATE, 0, int, false); CHECK_UNOP (-, NEGATE, INT_MAX, int, false); CHECK_UNOP (-, NEGATE, 0u, unsigned int, false); CHECK_UNOP (-, NEGATE, 1u, unsigned int, true); CHECK_UNOP (-, NEGATE, UINT_MAX, unsigned int, true); CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MAX, int, true, 1); CHECK_SBINOP (*, MULTIPLY, INT_MAX, INT_MIN, int, true, INT_MIN); CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MAX, int, true, INT_MIN); CHECK_SBINOP (*, MULTIPLY, INT_MIN, INT_MIN, int, true, 0); CHECK_SBINOP (*, MULTIPLY, -1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN); #if !defined __HP_cc CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX, long int, false, LONG_MIN - LONG_MIN % INT_MAX); #endif CHECK_BINOP (/, DIVIDE, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN); CHECK_BINOP (/, DIVIDE, INT_MAX, 1, int, false, INT_MAX); CHECK_BINOP (/, DIVIDE, (unsigned int) INT_MIN, -1u, unsigned int, false, INT_MIN / -1u); CHECK_BINOP (%, REMAINDER, INT_MIN, -1, int, INT_NEGATE_OVERFLOW (INT_MIN), 0); CHECK_BINOP (%, REMAINDER, INT_MAX, 1, int, false, 0); CHECK_BINOP (%, REMAINDER, (unsigned int) INT_MIN, -1u, unsigned int, false, INT_MIN % -1u); CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX, 1, unsigned int, true, UINT_MAX << 1); CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2 + 1, 1, unsigned int, true, (UINT_MAX / 2 + 1) << 1); CHECK_BINOP (<<, LEFT_SHIFT, UINT_MAX / 2, 1, unsigned int, false, (UINT_MAX / 2) << 1); /* INT__OVERFLOW and INT__WRAPV with mixed types. */ #define CHECK_SUM(a, b, t, v, vres) \ CHECK_SUM1 (a, b, t, v, vres); \ CHECK_SUM1 (b, a, t, v, vres) #define CHECK_SUM_WRAPV(a, b, t, v, vres, okres) \ CHECK_SUM_WRAPV1 (a, b, t, v, vres, okres); \ CHECK_SUM_WRAPV1 (b, a, t, v, vres, okres) #define CHECK_SUM1(a, b, t, v, vres) \ VERIFY (INT_ADD_OVERFLOW (a, b) == (v)); \ CHECK_SUM_WRAPV1 (a, b, t, v, vres, (a) + (b)) #define CHECK_SUM_WRAPV1(a, b, t, v, vres, okres) \ { \ t result; \ ASSERT (INT_ADD_WRAPV (a, b, &result) == (v)); \ ASSERT (result == ((v) ? (vres) : (okres))); \ } CHECK_SUM (-1, LONG_MIN, long int, true, LONG_MAX); CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE); CHECK_SUM (-1L, INT_MIN, long int, INT_MIN == LONG_MIN, INT_MIN == LONG_MIN ? INT_MAX : DONTCARE); CHECK_SUM (0u, -1, unsigned int, true, 0u + -1); CHECK_SUM (0u, 0, unsigned int, false, DONTCARE); CHECK_SUM (0u, 1, unsigned int, false, DONTCARE); CHECK_SUM (1, LONG_MAX, long int, true, LONG_MIN); CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u); CHECK_SUM (1L, INT_MAX, long int, INT_MAX == LONG_MAX, INT_MAX == LONG_MAX ? INT_MIN : DONTCARE); CHECK_SUM (1u, INT_MAX, unsigned int, INT_MAX == UINT_MAX, 1u + INT_MAX); CHECK_SUM (1u, INT_MIN, unsigned int, true, 1u + INT_MIN); CHECK_SUM_WRAPV (-1, 1u, int, false, DONTCARE, 0); CHECK_SUM_WRAPV (-1, 1ul, int, false, DONTCARE, 0); CHECK_SUM_WRAPV (-1l, 1u, int, false, DONTCARE, 0); CHECK_SUM_WRAPV (-100, 1000u, int, false, DONTCARE, 900); CHECK_SUM_WRAPV (INT_MIN, UINT_MAX, int, false, DONTCARE, INT_MAX); CHECK_SUM_WRAPV (1u, INT_MAX, int, true, INT_MIN, DONTCARE); CHECK_SUM_WRAPV (INT_MAX, 1, long int, LONG_MAX <= INT_MAX, INT_MIN, INT_MAX + 1L); CHECK_SUM_WRAPV (UINT_MAX, 1, long int, LONG_MAX <= UINT_MAX, 0, UINT_MAX + 1L); CHECK_SUM_WRAPV (INT_MAX, 1, unsigned long int, ULONG_MAX <= INT_MAX, 0, INT_MAX + 1uL); CHECK_SUM_WRAPV (UINT_MAX, 1, unsigned long int, ULONG_MAX <= UINT_MAX, 0, UINT_MAX + 1uL); { long int result; ASSERT (INT_ADD_WRAPV (1, INT_MAX, &result) == (INT_MAX == LONG_MAX)); ASSERT (INT_ADD_WRAPV (-1, INT_MIN, &result) == (INT_MIN == LONG_MIN)); } #define CHECK_DIFFERENCE(a, b, t, v, vres) \ VERIFY (INT_SUBTRACT_OVERFLOW (a, b) == (v)) #define CHECK_SDIFFERENCE(a, b, t, v, vres) \ CHECK_DIFFERENCE (a, b, t, v, vres); \ CHECK_SDIFFERENCE_WRAPV (a, b, t, v, vres) #define CHECK_SDIFFERENCE_WRAPV(a, b, t, v, vres) \ { \ t result; \ ASSERT (INT_SUBTRACT_WRAPV (a, b, &result) == (v)); \ ASSERT (result == ((v) ? (vres) : ((a) - (b)))); \ } CHECK_DIFFERENCE (INT_MAX, 1u, unsigned int, UINT_MAX < INT_MAX - 1, INT_MAX - 1u); CHECK_DIFFERENCE (UINT_MAX, 1, unsigned int, false, UINT_MAX - 1); CHECK_DIFFERENCE (0u, -1, unsigned int, false, 0u - -1); CHECK_DIFFERENCE (UINT_MAX, -1, unsigned int, true, UINT_MAX - -1); CHECK_DIFFERENCE (INT_MIN, 1u, unsigned int, true, INT_MIN - 1u); CHECK_DIFFERENCE (-1, 0u, unsigned int, true, -1 - 0u); CHECK_SDIFFERENCE (-1, INT_MIN, int, false, -1 - INT_MIN); CHECK_SDIFFERENCE (-1, INT_MAX, int, false, -1 - INT_MAX); CHECK_SDIFFERENCE (0, INT_MIN, int, INT_MIN < -INT_MAX, INT_MIN); CHECK_SDIFFERENCE (0, INT_MAX, int, false, 0 - INT_MAX); CHECK_SDIFFERENCE_WRAPV (-1, 1u, int, false, DONTCARE); CHECK_SDIFFERENCE_WRAPV (-1, 1ul, int, false, DONTCARE); CHECK_SDIFFERENCE_WRAPV (-1l, 1u, int, false, DONTCARE); CHECK_SDIFFERENCE_WRAPV (0u, INT_MAX, int, false, DONTCARE); CHECK_SDIFFERENCE_WRAPV (1u, INT_MIN, int, true, 1u - INT_MIN); { long int result; ASSERT (INT_SUBTRACT_WRAPV (INT_MAX, -1, &result) == (INT_MAX == LONG_MAX)); ASSERT (INT_SUBTRACT_WRAPV (INT_MIN, 1, &result) == (INT_MAX == LONG_MAX)); } #define CHECK_PRODUCT(a, b, t, v, vres) \ CHECK_PRODUCT1 (a, b, t, v, vres); \ CHECK_PRODUCT1 (b, a, t, v, vres) #define CHECK_SPRODUCT(a, b, t, v, vres) \ CHECK_SPRODUCT1 (a, b, t, v, vres); \ CHECK_SPRODUCT1 (b, a, t, v, vres) #define CHECK_SPRODUCT_WRAPV(a, b, t, v, vres) \ CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres); \ CHECK_SPRODUCT_WRAPV1 (b, a, t, v, vres) #define CHECK_PRODUCT1(a, b, t, v, vres) \ VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (v)) #define CHECK_SPRODUCT1(a, b, t, v, vres) \ CHECK_PRODUCT1 (a, b, t, v, vres); \ CHECK_SPRODUCT_WRAPV1 (a, b, t, v, vres) #define CHECK_SPRODUCT_WRAPV1(a, b, t, v, vres) \ { \ t result; \ ASSERT (INT_MULTIPLY_WRAPV (a, b, &result) == (v)); \ ASSERT (result == ((v) ? (vres) : ((a) * (b)))); \ } CHECK_PRODUCT (-1, 1u, unsigned int, true, -1 * 1u); CHECK_SPRODUCT (-1, INT_MIN, int, INT_NEGATE_OVERFLOW (INT_MIN), INT_MIN); CHECK_PRODUCT (-1, UINT_MAX, unsigned int, true, -1 * UINT_MAX); CHECK_SPRODUCT (-32768, LONG_MAX / -32768 - 1, long int, true, LONG_MIN); CHECK_SPRODUCT (-12345, LONG_MAX / -12345, long int, false, DONTCARE); CHECK_SPRODUCT (0, -1, int, false, DONTCARE); CHECK_SPRODUCT (0, 0, int, false, DONTCARE); CHECK_PRODUCT (0, 0u, unsigned int, false, DONTCARE); CHECK_SPRODUCT (0, 1, int, false, DONTCARE); CHECK_SPRODUCT (0, INT_MAX, int, false, DONTCARE); CHECK_SPRODUCT (0, INT_MIN, int, false, DONTCARE); CHECK_PRODUCT (0, UINT_MAX, unsigned int, false, DONTCARE); CHECK_PRODUCT (0u, -1, unsigned int, false, DONTCARE); CHECK_PRODUCT (0u, 0, unsigned int, false, DONTCARE); CHECK_PRODUCT (0u, 0u, unsigned int, false, DONTCARE); CHECK_PRODUCT (0u, 1, unsigned int, false, DONTCARE); CHECK_PRODUCT (0u, INT_MAX, unsigned int, false, DONTCARE); CHECK_PRODUCT (0u, INT_MIN, unsigned int, false, DONTCARE); CHECK_PRODUCT (0u, UINT_MAX, unsigned int, false, DONTCARE); CHECK_SPRODUCT (1, INT_MAX, int, false, DONTCARE); CHECK_SPRODUCT (1, INT_MIN, int, false, DONTCARE); CHECK_PRODUCT (1, UINT_MAX, unsigned int, false, DONTCARE); CHECK_PRODUCT (1u, INT_MIN, unsigned int, true, 1u * INT_MIN); CHECK_PRODUCT (1u, INT_MAX, unsigned int, UINT_MAX < INT_MAX, 1u * INT_MAX); CHECK_PRODUCT (INT_MAX, UINT_MAX, unsigned int, true, INT_MAX * UINT_MAX); CHECK_PRODUCT (INT_MAX, ULONG_MAX, unsigned long int, true, INT_MAX * ULONG_MAX); #if !defined __HP_cc CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, long int, true, LONG_MIN); CHECK_SPRODUCT (INT_MIN, LONG_MAX / INT_MIN, long int, false, DONTCARE); #endif CHECK_PRODUCT (INT_MIN, UINT_MAX, unsigned int, true, INT_MIN * UINT_MAX); CHECK_PRODUCT (INT_MIN, ULONG_MAX, unsigned long int, true, INT_MIN * ULONG_MAX); CHECK_SPRODUCT_WRAPV (-1, INT_MAX + 1u, int, false, DONTCARE); CHECK_SPRODUCT_WRAPV (-1, 1u, int, false, DONTCARE); CHECK_SPRODUCT (0, ULONG_MAX, int, false, DONTCARE); CHECK_SPRODUCT (0u, LONG_MIN, int, false, DONTCARE); { long int result; ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result) == (LONG_MAX / INT_MAX < INT_MAX)); ASSERT (INT_MULTIPLY_WRAPV (INT_MAX, INT_MAX, &result) || result == INT_MAX * (long int) INT_MAX); ASSERT (INT_MULTIPLY_WRAPV (INT_MIN, INT_MIN, &result) || result == INT_MIN * (long int) INT_MIN); } # ifdef LLONG_MAX { long long int result; ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result) == (LLONG_MAX / LONG_MAX < LONG_MAX)); ASSERT (INT_MULTIPLY_WRAPV (LONG_MAX, LONG_MAX, &result) || result == LONG_MAX * (long long int) LONG_MAX); ASSERT (INT_MULTIPLY_WRAPV (LONG_MIN, LONG_MIN, &result) || result == LONG_MIN * (long long int) LONG_MIN); } # endif /* Check for GCC bug 91450. */ { unsigned long long result; ASSERT (INT_MULTIPLY_WRAPV (int_minus_2, int_1, &result) && result == -2); } #define CHECK_QUOTIENT(a, b, v) VERIFY (INT_DIVIDE_OVERFLOW (a, b) == (v)) CHECK_QUOTIENT (INT_MIN, -1L, INT_MIN == LONG_MIN); CHECK_QUOTIENT (INT_MIN, UINT_MAX, false); CHECK_QUOTIENT (INTMAX_MIN, UINTMAX_MAX, false); CHECK_QUOTIENT (INTMAX_MIN, UINT_MAX, false); CHECK_QUOTIENT (-11, 10u, true); CHECK_QUOTIENT (-10, 10u, true); CHECK_QUOTIENT (-9, 10u, false); CHECK_QUOTIENT (11u, -10, true); CHECK_QUOTIENT (10u, -10, true); CHECK_QUOTIENT (9u, -10, false); #define CHECK_REMAINDER(a, b, v) VERIFY (INT_REMAINDER_OVERFLOW (a, b) == (v)) CHECK_REMAINDER (INT_MIN, -1L, INT_MIN == LONG_MIN); CHECK_REMAINDER (-1, UINT_MAX, true); CHECK_REMAINDER ((intmax_t) -1, UINTMAX_MAX, true); CHECK_REMAINDER (INTMAX_MIN, UINT_MAX, (INTMAX_MAX < UINT_MAX && - (unsigned int) INTMAX_MIN % UINT_MAX != 0)); CHECK_REMAINDER (INT_MIN, ULONG_MAX, INT_MIN % ULONG_MAX != 1); CHECK_REMAINDER (1u, -1, false); CHECK_REMAINDER (37*39u, -39, false); CHECK_REMAINDER (37*39u + 1, -39, true); CHECK_REMAINDER (37*39u - 1, -39, true); CHECK_REMAINDER (LONG_MAX, -INT_MAX, false); return test_exit_status; }