X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-intprops.c;h=1a34d77bf59704508658758e8d1bb6b605989c0b;hb=e91216b238f2af78257bd943db0b22b289d172cc;hp=eec35dd93334d44f28f22f77630e6051245fab61;hpb=55abd3179923a7ec9cde845b8c37fc678c31dd5c;p=gnulib.git diff --git a/tests/test-intprops.c b/tests/test-intprops.c index eec35dd93..1a34d77bf 100644 --- a/tests/test-intprops.c +++ b/tests/test-intprops.c @@ -16,6 +16,12 @@ /* Written by Paul Eggert. */ +/* Tell gcc not to warn about the many (X < 0) expressions that + the overflow macros expand to. */ +#if (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) || 4 < __GNUC__ +# pragma GCC diagnostic ignored "-Wtype-limits" +#endif + #include #include "intprops.h" @@ -26,212 +32,22 @@ #include "macros.h" -/* Integer representation. */ -verify (INT_MIN + INT_MAX < 0 - ? (TYPE_TWOS_COMPLEMENT (int) - && ! TYPE_ONES_COMPLEMENT (int) && ! TYPE_SIGNED_MAGNITUDE (int)) - : (! TYPE_TWOS_COMPLEMENT (int) - && (TYPE_ONES_COMPLEMENT (int) || TYPE_SIGNED_MAGNITUDE (int)))); - -/* 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)); - -/* 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); -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); - -/* 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 hosts */ -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")); +/* VERIFY (X) uses a static assertion for compilers that are known to work, + and falls back on a dynamic assertion for other compilers. + 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 + . */ +#if __GNUC__ || __SUNPRO_C +# define VERIFY(x) do { verify (x); } while (0) +#else +# define VERIFY(x) ASSERT (x) #endif -/* All the INT__RANGE_OVERFLOW tests are equally valid as - INT__OVERFLOW tests, so define a single macro to do both. */ -#define check_binop(op, a, b, min, max, overflow) \ - (INT_##op##_RANGE_OVERFLOW (a, b, min, max) == (overflow) \ - && INT_##op##_OVERFLOW (a, b) == (overflow)) -#define check_unop(op, a, min, max, overflow) \ - (INT_##op##_RANGE_OVERFLOW (a, min, max) == (overflow) \ - && INT_##op##_OVERFLOW (a) == (overflow)) - -/* INT__RANGE_OVERFLOW, INT__OVERFLOW. */ -verify (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX)); -verify (INT_ADD_OVERFLOW (INT_MAX, 1)); -verify (check_binop (ADD, INT_MAX, 1, INT_MIN, INT_MAX, true)); -verify (check_binop (ADD, INT_MAX, -1, INT_MIN, INT_MAX, false)); -verify (check_binop (ADD, INT_MIN, 1, INT_MIN, INT_MAX, false)); -verify (check_binop (ADD, INT_MIN, -1, INT_MIN, INT_MAX, true)); -verify (check_binop (ADD, UINT_MAX, 1u, 0u, UINT_MAX, true)); -verify (check_binop (ADD, 0u, 1u, 0u, UINT_MAX, false)); - -verify (check_binop (SUBTRACT, INT_MAX, 1, INT_MIN, INT_MAX, false)); -verify (check_binop (SUBTRACT, INT_MAX, -1, INT_MIN, INT_MAX, true)); -verify (check_binop (SUBTRACT, INT_MIN, 1, INT_MIN, INT_MAX, true)); -verify (check_binop (SUBTRACT, INT_MIN, -1, INT_MIN, INT_MAX, false)); -verify (check_binop (SUBTRACT, UINT_MAX, 1u, 0u, UINT_MAX, false)); -verify (check_binop (SUBTRACT, 0u, 1u, 0u, UINT_MAX, true)); - -verify (check_unop (NEGATE, INT_MIN, INT_MIN, INT_MAX, - TYPE_TWOS_COMPLEMENT (int))); -verify (check_unop (NEGATE, 0, INT_MIN, INT_MAX, false)); -verify (check_unop (NEGATE, INT_MAX, INT_MIN, INT_MAX, false)); -verify (check_unop (NEGATE, 0u, 0u, UINT_MAX, false)); -verify (check_unop (NEGATE, 1u, 0u, UINT_MAX, true)); -verify (check_unop (NEGATE, UINT_MAX, 0u, UINT_MAX, true)); - -verify (check_binop (MULTIPLY, INT_MAX, INT_MAX, INT_MIN, INT_MAX, true)); -verify (check_binop (MULTIPLY, INT_MAX, INT_MIN, INT_MIN, INT_MAX, true)); -verify (check_binop (MULTIPLY, INT_MIN, INT_MAX, INT_MIN, INT_MAX, true)); -verify (check_binop (MULTIPLY, INT_MIN, INT_MIN, INT_MIN, INT_MAX, true)); -verify (check_binop (MULTIPLY, -1, INT_MIN, INT_MIN, INT_MAX, - INT_NEGATE_OVERFLOW (INT_MIN))); -verify (check_binop (MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX, - LONG_MIN, LONG_MIN, false)); - -verify (check_binop (DIVIDE, INT_MIN, -1, INT_MIN, INT_MAX, - INT_NEGATE_OVERFLOW (INT_MIN))); -verify (check_binop (DIVIDE, INT_MAX, 1, INT_MIN, INT_MAX, false)); -verify (check_binop (DIVIDE, (unsigned int) INT_MIN, - -1u, 0u, UINT_MAX, false)); - -verify (check_binop (REMAINDER, INT_MIN, -1, INT_MIN, INT_MAX, - INT_NEGATE_OVERFLOW (INT_MIN))); -verify (check_binop (REMAINDER, INT_MAX, 1, INT_MIN, INT_MAX, false)); -verify (check_binop (REMAINDER, (unsigned int) INT_MIN, - -1u, 0u, UINT_MAX, false)); - -verify (check_binop (LEFT_SHIFT, UINT_MAX, 1, 0u, UINT_MAX, true)); -verify (check_binop (LEFT_SHIFT, UINT_MAX / 2 + 1, 1, 0u, UINT_MAX, true)); -verify (check_binop (LEFT_SHIFT, UINT_MAX / 2, 1, 0u, UINT_MAX, false)); - -/* INT__OVERFLOW with mixed types. */ -#define check_sum(a, b, overflow) \ - verify (INT_ADD_OVERFLOW (a, b) == (overflow)); \ - verify (INT_ADD_OVERFLOW (b, a) == (overflow)) -check_sum (-1, LONG_MIN, true); -check_sum (-1, UINT_MAX, false); -check_sum (-1L, INT_MIN, INT_MIN == LONG_MIN); -check_sum (0u, -1, true); -check_sum (0u, 0, false); -check_sum (0u, 1, false); -check_sum (1, LONG_MAX, true); -check_sum (1, UINT_MAX, true); -check_sum (1L, INT_MAX, INT_MAX == LONG_MAX); -check_sum (1u, INT_MAX, INT_MAX == UINT_MAX); -check_sum (1u, INT_MIN, true); - -verify (! INT_SUBTRACT_OVERFLOW (INT_MAX, 1u)); -verify (! INT_SUBTRACT_OVERFLOW (UINT_MAX, 1)); -verify (! INT_SUBTRACT_OVERFLOW (0u, -1)); -verify (INT_SUBTRACT_OVERFLOW (UINT_MAX, -1)); -verify (INT_SUBTRACT_OVERFLOW (INT_MIN, 1u)); -verify (INT_SUBTRACT_OVERFLOW (-1, 0u)); - -#define check_product(a, b, overflow) \ - verify (INT_MULTIPLY_OVERFLOW (a, b) == (overflow)); \ - verify (INT_MULTIPLY_OVERFLOW (b, a) == (overflow)) - -check_product (-1, 1u, true); -check_product (-1, INT_MIN, INT_NEGATE_OVERFLOW (INT_MIN)); -check_product (-1, UINT_MAX, true); -check_product (-12345, LONG_MAX / -12345 - 1, true); -check_product (-12345, LONG_MAX / -12345, false); -check_product (0, -1, false); -check_product (0, 0, false); -check_product (0, 0u, false); -check_product (0, 1, false); -check_product (0, INT_MAX, false); -check_product (0, INT_MIN, false); -check_product (0, UINT_MAX, false); -check_product (0u, -1, false); -check_product (0u, 0, false); -check_product (0u, 0u, false); -check_product (0u, 1, false); -check_product (0u, INT_MAX, false); -check_product (0u, INT_MIN, false); -check_product (0u, UINT_MAX, false); -check_product (1, INT_MAX, false); -check_product (1, INT_MIN, false); -check_product (1, UINT_MAX, false); -check_product (1u, INT_MIN, true); -check_product (1u, INT_MAX, UINT_MAX < INT_MAX); -check_product (INT_MAX, UINT_MAX, true); -check_product (INT_MAX, ULONG_MAX, true); -check_product (INT_MIN, LONG_MAX / INT_MIN - 1, true); -check_product (INT_MIN, LONG_MAX / INT_MIN, false); -check_product (INT_MIN, UINT_MAX, true); -check_product (INT_MIN, ULONG_MAX, true); - -verify (INT_DIVIDE_OVERFLOW (INT_MIN, -1L) - == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN)); -verify (! INT_DIVIDE_OVERFLOW (INT_MIN, UINT_MAX)); -verify (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINTMAX_MAX)); -verify (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINT_MAX)); -verify (INT_DIVIDE_OVERFLOW (-11, 10u)); -verify (INT_DIVIDE_OVERFLOW (-10, 10u)); -verify (! INT_DIVIDE_OVERFLOW (-9, 10u)); -verify (INT_DIVIDE_OVERFLOW (11u, -10)); -verify (INT_DIVIDE_OVERFLOW (10u, -10)); -verify (! INT_DIVIDE_OVERFLOW (9u, -10)); - -verify (INT_REMAINDER_OVERFLOW (INT_MIN, -1L) - == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN)); -verify (INT_REMAINDER_OVERFLOW (-1, UINT_MAX)); -verify (INT_REMAINDER_OVERFLOW ((intmax_t) -1, UINTMAX_MAX)); -verify (INT_REMAINDER_OVERFLOW (INTMAX_MIN, UINT_MAX) - == (INTMAX_MAX < UINT_MAX - && - (unsigned int) INTMAX_MIN % UINT_MAX != 0)); -verify (INT_REMAINDER_OVERFLOW (INT_MIN, ULONG_MAX) - == (INT_MIN % ULONG_MAX != 1)); -verify (! INT_REMAINDER_OVERFLOW (1u, -1)); -verify (! INT_REMAINDER_OVERFLOW (37*39u, -39)); -verify (INT_REMAINDER_OVERFLOW (37*39u + 1, -39)); -verify (INT_REMAINDER_OVERFLOW (37*39u - 1, -39)); -verify (! INT_REMAINDER_OVERFLOW (LONG_MAX, -INT_MAX)); - int main (void) { - /* Test expressions that might not be integer constant expressions. */ + /* Use VERIFY for tests that must be integer constant expressions, + ASSERT otherwise. */ /* TYPE_IS_INTEGER. */ ASSERT (TYPE_IS_INTEGER (bool)); @@ -251,9 +67,209 @@ main (void) 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. */ + VERIFY (INT_MIN + INT_MAX < 0 + ? (TYPE_TWOS_COMPLEMENT (int) + && ! TYPE_ONES_COMPLEMENT (int) && ! TYPE_SIGNED_MAGNITUDE (int)) + : (! TYPE_TWOS_COMPLEMENT (int) + && (TYPE_ONES_COMPLEMENT (int) || TYPE_SIGNED_MAGNITUDE (int)))); + + /* 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); + 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); + + /* 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 + + /* All the INT__RANGE_OVERFLOW tests are equally valid as + INT__OVERFLOW tests, so define a single macro to do both. */ + #define CHECK_BINOP(op, a, b, min, max, overflow) \ + (INT_##op##_RANGE_OVERFLOW (a, b, min, max) == (overflow) \ + && INT_##op##_OVERFLOW (a, b) == (overflow)) + #define CHECK_UNOP(op, a, min, max, overflow) \ + (INT_##op##_RANGE_OVERFLOW (a, min, max) == (overflow) \ + && INT_##op##_OVERFLOW (a) == (overflow)) + + /* INT__RANGE_OVERFLOW, INT__OVERFLOW. */ + VERIFY (INT_ADD_RANGE_OVERFLOW (INT_MAX, 1, INT_MIN, INT_MAX)); + VERIFY (INT_ADD_OVERFLOW (INT_MAX, 1)); + VERIFY (CHECK_BINOP (ADD, INT_MAX, 1, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (ADD, INT_MAX, -1, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_BINOP (ADD, INT_MIN, 1, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_BINOP (ADD, INT_MIN, -1, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (ADD, UINT_MAX, 1u, 0u, UINT_MAX, true)); + VERIFY (CHECK_BINOP (ADD, 0u, 1u, 0u, UINT_MAX, false)); + + VERIFY (CHECK_BINOP (SUBTRACT, INT_MAX, 1, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_BINOP (SUBTRACT, INT_MAX, -1, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (SUBTRACT, INT_MIN, 1, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (SUBTRACT, INT_MIN, -1, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_BINOP (SUBTRACT, UINT_MAX, 1u, 0u, UINT_MAX, false)); + VERIFY (CHECK_BINOP (SUBTRACT, 0u, 1u, 0u, UINT_MAX, true)); + + VERIFY (CHECK_UNOP (NEGATE, INT_MIN, INT_MIN, INT_MAX, + TYPE_TWOS_COMPLEMENT (int))); + VERIFY (CHECK_UNOP (NEGATE, 0, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_UNOP (NEGATE, INT_MAX, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_UNOP (NEGATE, 0u, 0u, UINT_MAX, false)); + VERIFY (CHECK_UNOP (NEGATE, 1u, 0u, UINT_MAX, true)); + VERIFY (CHECK_UNOP (NEGATE, UINT_MAX, 0u, UINT_MAX, true)); + + VERIFY (CHECK_BINOP (MULTIPLY, INT_MAX, INT_MAX, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (MULTIPLY, INT_MAX, INT_MIN, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (MULTIPLY, INT_MIN, INT_MAX, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (MULTIPLY, INT_MIN, INT_MIN, INT_MIN, INT_MAX, true)); + VERIFY (CHECK_BINOP (MULTIPLY, -1, INT_MIN, INT_MIN, INT_MAX, + INT_NEGATE_OVERFLOW (INT_MIN))); + VERIFY (CHECK_BINOP (MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX, + LONG_MIN, LONG_MIN, false)); + + VERIFY (CHECK_BINOP (DIVIDE, INT_MIN, -1, INT_MIN, INT_MAX, + INT_NEGATE_OVERFLOW (INT_MIN))); + VERIFY (CHECK_BINOP (DIVIDE, INT_MAX, 1, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_BINOP (DIVIDE, (unsigned int) INT_MIN, + -1u, 0u, UINT_MAX, false)); + + VERIFY (CHECK_BINOP (REMAINDER, INT_MIN, -1, INT_MIN, INT_MAX, + INT_NEGATE_OVERFLOW (INT_MIN))); + VERIFY (CHECK_BINOP (REMAINDER, INT_MAX, 1, INT_MIN, INT_MAX, false)); + VERIFY (CHECK_BINOP (REMAINDER, (unsigned int) INT_MIN, + -1u, 0u, UINT_MAX, false)); + + VERIFY (CHECK_BINOP (LEFT_SHIFT, UINT_MAX, 1, 0u, UINT_MAX, true)); + VERIFY (CHECK_BINOP (LEFT_SHIFT, UINT_MAX / 2 + 1, 1, 0u, UINT_MAX, true)); + VERIFY (CHECK_BINOP (LEFT_SHIFT, UINT_MAX / 2, 1, 0u, UINT_MAX, false)); + + /* INT__OVERFLOW with mixed types. */ + #define CHECK_SUM(a, b, overflow) \ + VERIFY (INT_ADD_OVERFLOW (a, b) == (overflow)); \ + VERIFY (INT_ADD_OVERFLOW (b, a) == (overflow)) + CHECK_SUM (-1, LONG_MIN, true); + CHECK_SUM (-1, UINT_MAX, false); + CHECK_SUM (-1L, INT_MIN, INT_MIN == LONG_MIN); + CHECK_SUM (0u, -1, true); + CHECK_SUM (0u, 0, false); + CHECK_SUM (0u, 1, false); + CHECK_SUM (1, LONG_MAX, true); + CHECK_SUM (1, UINT_MAX, true); + CHECK_SUM (1L, INT_MAX, INT_MAX == LONG_MAX); + CHECK_SUM (1u, INT_MAX, INT_MAX == UINT_MAX); + CHECK_SUM (1u, INT_MIN, true); + + VERIFY (! INT_SUBTRACT_OVERFLOW (INT_MAX, 1u)); + VERIFY (! INT_SUBTRACT_OVERFLOW (UINT_MAX, 1)); + VERIFY (! INT_SUBTRACT_OVERFLOW (0u, -1)); + VERIFY (INT_SUBTRACT_OVERFLOW (UINT_MAX, -1)); + VERIFY (INT_SUBTRACT_OVERFLOW (INT_MIN, 1u)); + VERIFY (INT_SUBTRACT_OVERFLOW (-1, 0u)); + + #define CHECK_PRODUCT(a, b, overflow) \ + VERIFY (INT_MULTIPLY_OVERFLOW (a, b) == (overflow)); \ + VERIFY (INT_MULTIPLY_OVERFLOW (b, a) == (overflow)) + + CHECK_PRODUCT (-1, 1u, true); + CHECK_PRODUCT (-1, INT_MIN, INT_NEGATE_OVERFLOW (INT_MIN)); + CHECK_PRODUCT (-1, UINT_MAX, true); + CHECK_PRODUCT (-12345, LONG_MAX / -12345 - 1, true); + CHECK_PRODUCT (-12345, LONG_MAX / -12345, false); + CHECK_PRODUCT (0, -1, false); + CHECK_PRODUCT (0, 0, false); + CHECK_PRODUCT (0, 0u, false); + CHECK_PRODUCT (0, 1, false); + CHECK_PRODUCT (0, INT_MAX, false); + CHECK_PRODUCT (0, INT_MIN, false); + CHECK_PRODUCT (0, UINT_MAX, false); + CHECK_PRODUCT (0u, -1, false); + CHECK_PRODUCT (0u, 0, false); + CHECK_PRODUCT (0u, 0u, false); + CHECK_PRODUCT (0u, 1, false); + CHECK_PRODUCT (0u, INT_MAX, false); + CHECK_PRODUCT (0u, INT_MIN, false); + CHECK_PRODUCT (0u, UINT_MAX, false); + CHECK_PRODUCT (1, INT_MAX, false); + CHECK_PRODUCT (1, INT_MIN, false); + CHECK_PRODUCT (1, UINT_MAX, false); + CHECK_PRODUCT (1u, INT_MIN, true); + CHECK_PRODUCT (1u, INT_MAX, UINT_MAX < INT_MAX); + CHECK_PRODUCT (INT_MAX, UINT_MAX, true); + CHECK_PRODUCT (INT_MAX, ULONG_MAX, true); + CHECK_PRODUCT (INT_MIN, LONG_MAX / INT_MIN - 1, true); + CHECK_PRODUCT (INT_MIN, LONG_MAX / INT_MIN, false); + CHECK_PRODUCT (INT_MIN, UINT_MAX, true); + CHECK_PRODUCT (INT_MIN, ULONG_MAX, true); + + VERIFY (INT_DIVIDE_OVERFLOW (INT_MIN, -1L) + == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN)); + VERIFY (! INT_DIVIDE_OVERFLOW (INT_MIN, UINT_MAX)); + VERIFY (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINTMAX_MAX)); + VERIFY (! INT_DIVIDE_OVERFLOW (INTMAX_MIN, UINT_MAX)); + VERIFY (INT_DIVIDE_OVERFLOW (-11, 10u)); + VERIFY (INT_DIVIDE_OVERFLOW (-10, 10u)); + VERIFY (! INT_DIVIDE_OVERFLOW (-9, 10u)); + VERIFY (INT_DIVIDE_OVERFLOW (11u, -10)); + VERIFY (INT_DIVIDE_OVERFLOW (10u, -10)); + VERIFY (! INT_DIVIDE_OVERFLOW (9u, -10)); + + VERIFY (INT_REMAINDER_OVERFLOW (INT_MIN, -1L) + == (TYPE_TWOS_COMPLEMENT (long int) && INT_MIN == LONG_MIN)); + VERIFY (INT_REMAINDER_OVERFLOW (-1, UINT_MAX)); + VERIFY (INT_REMAINDER_OVERFLOW ((intmax_t) -1, UINTMAX_MAX)); + VERIFY (INT_REMAINDER_OVERFLOW (INTMAX_MIN, UINT_MAX) + == (INTMAX_MAX < UINT_MAX + && - (unsigned int) INTMAX_MIN % UINT_MAX != 0)); + VERIFY (INT_REMAINDER_OVERFLOW (INT_MIN, ULONG_MAX) + == (INT_MIN % ULONG_MAX != 1)); + VERIFY (! INT_REMAINDER_OVERFLOW (1u, -1)); + VERIFY (! INT_REMAINDER_OVERFLOW (37*39u, -39)); + VERIFY (INT_REMAINDER_OVERFLOW (37*39u + 1, -39)); + VERIFY (INT_REMAINDER_OVERFLOW (37*39u - 1, -39)); + VERIFY (! INT_REMAINDER_OVERFLOW (LONG_MAX, -INT_MAX)); + return 0; }