diff options
Diffstat (limited to 'tests/test-intprops.c')
| -rw-r--r-- | tests/test-intprops.c | 391 |
1 files changed, 243 insertions, 148 deletions
diff --git a/tests/test-intprops.c b/tests/test-intprops.c index 06df5a7..0a8ddcd 100644 --- a/tests/test-intprops.c +++ b/tests/test-intprops.c @@ -1,5 +1,5 @@ /* Test intprops.h. - Copyright (C) 2011-2015 Free Software Foundation, Inc. + Copyright (C) 2011-2016 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 @@ -16,10 +16,16 @@ /* 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__ +/* Tell gcc not to warn about the long expressions that the overflow + macros expand to, or about the (X < 0) expressions. */ +#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__) +# 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 #include <config.h> @@ -29,6 +35,7 @@ #include <stdbool.h> #include <inttypes.h> +#include <limits.h> #include "macros.h" @@ -43,6 +50,8 @@ # define VERIFY(x) ASSERT (x) #endif +#define DONTCARE __LINE__ + int main (void) { @@ -82,12 +91,8 @@ main (void) 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)))); + /* 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); @@ -128,148 +133,238 @@ main (void) #endif /* All the INT_<op>_RANGE_OVERFLOW tests are equally valid as - INT_<op>_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_<op>_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 operatinos, + 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_<op>_RANGE_OVERFLOW, INT_<op>_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_<op>_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)); + + 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); + CHECK_SBINOP (*, MULTIPLY, LONG_MIN / INT_MAX, (long int) INT_MAX, + long int, false, LONG_MIN - LONG_MIN % INT_MAX); + + 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_<op>_OVERFLOW and INT_<op>_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_SSUM(a, b, t, v, vres) \ + CHECK_SSUM1(a, b, t, v, vres); \ + CHECK_SSUM1(b, a, t, v, vres) + #define CHECK_SUM1(a, b, t, v, vres) \ + VERIFY (INT_ADD_OVERFLOW (a, b) == (v)) + #define CHECK_SSUM1(a, b, t, v, vres) \ + CHECK_SUM1(a, b, t, v, vres); \ + { \ + t result; \ + ASSERT (INT_ADD_WRAPV (a, b, &result) == (v)); \ + ASSERT (result == ((v) ? (vres) : ((a) + (b)))); \ + } + CHECK_SSUM (-1, LONG_MIN, long int, true, LONG_MAX); + CHECK_SUM (-1, UINT_MAX, unsigned int, false, DONTCARE); + CHECK_SSUM (-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_SSUM (1, LONG_MAX, long int, true, LONG_MIN); + CHECK_SUM (1, UINT_MAX, unsigned int, true, 0u); + CHECK_SSUM (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); + { + 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); \ + { \ + 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); + { + 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_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); \ + { \ + 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); + 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); + 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); + { + 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 + + #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 0; } |