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systemd/src/test/test-macro.c
T
Zbigniew Jędrzejewski-Szmek efbd8a26d6 fundamental: add ABS_DIFF macro 
Sometimes we want need to diff two unsigned numbers, which is awkward
because we need to cast them to something with a sign first, if we want
to use abs(). Let's add a helper that avoids the function call
altogether.

Also drop unnecessary parens arounds args which are delimited by commas.
2026-04-11 14:58:34 +02:00

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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "tests.h"
TEST(saturate_add) {
assert_se(saturate_add(1, 2, UINT8_MAX) == 3);
assert_se(saturate_add(1, UINT8_MAX-2, UINT8_MAX) == UINT8_MAX-1);
assert_se(saturate_add(1, UINT8_MAX-1, UINT8_MAX) == UINT8_MAX);
assert_se(saturate_add(1, UINT8_MAX, UINT8_MAX) == UINT8_MAX);
assert_se(saturate_add(2, UINT8_MAX, UINT8_MAX) == UINT8_MAX);
assert_se(saturate_add(60, 60, 50) == 50);
}
TEST(ALIGN_POWER2) {
unsigned long i, p2;
assert_se(ALIGN_POWER2(0) == 0);
assert_se(ALIGN_POWER2(1) == 1);
assert_se(ALIGN_POWER2(2) == 2);
assert_se(ALIGN_POWER2(3) == 4);
assert_se(ALIGN_POWER2(4) == 4);
assert_se(ALIGN_POWER2(5) == 8);
assert_se(ALIGN_POWER2(6) == 8);
assert_se(ALIGN_POWER2(7) == 8);
assert_se(ALIGN_POWER2(9) == 16);
assert_se(ALIGN_POWER2(10) == 16);
assert_se(ALIGN_POWER2(11) == 16);
assert_se(ALIGN_POWER2(12) == 16);
assert_se(ALIGN_POWER2(13) == 16);
assert_se(ALIGN_POWER2(14) == 16);
assert_se(ALIGN_POWER2(15) == 16);
assert_se(ALIGN_POWER2(16) == 16);
assert_se(ALIGN_POWER2(17) == 32);
assert_se(ALIGN_POWER2(ULONG_MAX) == 0);
assert_se(ALIGN_POWER2(ULONG_MAX - 1) == 0);
assert_se(ALIGN_POWER2(ULONG_MAX - 1024) == 0);
assert_se(ALIGN_POWER2(ULONG_MAX / 2) == ULONG_MAX / 2 + 1);
assert_se(ALIGN_POWER2(ULONG_MAX + 1) == 0);
for (i = 1; i < 131071; ++i) {
for (p2 = 1; p2 < i; p2 <<= 1)
/* empty */ ;
assert_se(ALIGN_POWER2(i) == p2);
}
for (i = ULONG_MAX - 1024; i < ULONG_MAX; ++i) {
for (p2 = 1; p2 && p2 < i; p2 <<= 1)
/* empty */ ;
assert_se(ALIGN_POWER2(i) == p2);
}
}
TEST(MAX) {
static const struct {
int a;
int b[CONST_MAX(10, 100)];
} val1 = {
.a = CONST_MAX(10, 100),
};
int d = 0;
unsigned long x = 12345;
unsigned long y = 54321;
const char str[] = "a_string_constant";
const unsigned long long arr[] = {9999ULL, 10ULL, 0ULL, 3000ULL, 2000ULL, 1000ULL, 100ULL, 9999999ULL};
void *p = (void *)str;
void *q = (void *)&str[16];
assert_cc(sizeof(val1.b) == sizeof(int) * 100);
/* CONST_MAX returns (void) instead of a value if the passed arguments
* are not of the same type or not constant expressions. */
assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 10)), int));
assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 1U)), typeof(VOID_0)));
assert_se(val1.a == 100);
assert_se(MAX(++d, 0) == 1);
assert_se(d == 1);
assert_cc(MAXSIZE(char[3], uint16_t) == 3);
assert_cc(MAXSIZE(char[3], uint32_t) == 4);
assert_cc(MAXSIZE(char, long) == sizeof(long));
assert_se(MAX(-5, 5) == 5);
assert_se(MAX(5, 5) == 5);
assert_se(MAX(MAX(1, MAX(2, MAX(3, 4))), 5) == 5);
assert_se(MAX(MAX(1, MAX(2, MAX(3, 2))), 1) == 3);
assert_se(MAX(MIN(1, MIN(2, MIN(3, 4))), 5) == 5);
assert_se(MAX(MAX(1, MIN(2, MIN(3, 2))), 1) == 2);
assert_se(LESS_BY(8, 4) == 4);
assert_se(LESS_BY(8, 8) == 0);
assert_se(LESS_BY(4, 8) == 0);
assert_se(LESS_BY(16, LESS_BY(8, 4)) == 12);
assert_se(LESS_BY(4, LESS_BY(8, 4)) == 0);
assert_se(CMP(3, 5) == -1);
assert_se(CMP(5, 3) == 1);
assert_se(CMP(5, 5) == 0);
assert_se(CMP(x, y) == -1);
assert_se(CMP(y, x) == 1);
assert_se(CMP(x, x) == 0);
assert_se(CMP(y, y) == 0);
assert_se(CMP(UINT64_MAX, (uint64_t) 0) == 1);
assert_se(CMP((uint64_t) 0, UINT64_MAX) == -1);
assert_se(CMP(UINT64_MAX, UINT64_MAX) == 0);
assert_se(CMP(INT64_MIN, INT64_MAX) == -1);
assert_se(CMP(INT64_MAX, INT64_MIN) == 1);
assert_se(CMP(INT64_MAX, INT64_MAX) == 0);
assert_se(CMP(INT64_MIN, INT64_MIN) == 0);
assert_se(CMP(INT64_MAX, (int64_t) 0) == 1);
assert_se(CMP((int64_t) 0, INT64_MIN) == 1);
assert_se(CMP(INT64_MIN, (int64_t) 0) == -1);
assert_se(CMP((int64_t) 0, INT64_MAX) == -1);
assert_se(CMP(&str[2], &str[7]) == -1);
assert_se(CMP(&str[2], &str[2]) == 0);
assert_se(CMP(&str[7], (const char *)str) == 1);
assert_se(CMP(str[2], str[7]) == 1);
assert_se(CMP(str[7], *str) == 1);
assert_se(CMP((const unsigned long long *)arr, &arr[3]) == -1);
assert_se(CMP(*arr, arr[3]) == 1);
assert_se(CMP(p, q) == -1);
assert_se(CMP(q, p) == 1);
assert_se(CMP(p, p) == 0);
assert_se(CMP(q, q) == 0);
assert_se(CLAMP(-5, 0, 1) == 0);
assert_se(CLAMP(5, 0, 1) == 1);
assert_se(CLAMP(5, -10, 1) == 1);
assert_se(CLAMP(5, -10, 10) == 5);
assert_se(CLAMP(CLAMP(0, -10, 10), CLAMP(-5, 10, 20), CLAMP(100, -5, 20)) == 10);
}
TEST(ABS_DIFF) {
ASSERT_EQ(ABS_DIFF(5, 3), 2);
ASSERT_EQ(ABS_DIFF(3, 5), 2);
ASSERT_EQ(ABS_DIFF(5llu, 2llu), 3llu);
ASSERT_EQ(ABS_DIFF(3llu, 5llu), 2llu);
}
#pragma GCC diagnostic push
#ifdef __clang__
# pragma GCC diagnostic ignored "-Waddress-of-packed-member"
#endif
TEST(container_of) {
struct mytype {
uint8_t pad1[3];
uint64_t v1;
uint8_t pad2[2];
uint32_t v2;
} myval = { };
assert_cc(sizeof(myval) >= 17);
assert_se(container_of(&myval.v1, struct mytype, v1) == &myval);
assert_se(container_of(&myval.v2, struct mytype, v2) == &myval);
assert_se(container_of(&container_of(&myval.v2,
struct mytype,
v2)->v1,
struct mytype,
v1) == &myval);
}
#pragma GCC diagnostic pop
#define TEST_OVERFLOW_MATH_BY_TYPE(type, min, max, lit) \
({ \
type x; \
\
assert_se(ADD_SAFE(&x, lit(5), lit(10))); \
assert_se(x == lit(15)); \
if (IS_SIGNED_INTEGER_TYPE(type)) { \
assert_se(ADD_SAFE(&x, lit(5), lit(-10))); \
assert_se(x == lit(-5)); \
} \
assert_se(ADD_SAFE(&x, min, lit(0))); \
assert_se(x == min); \
assert_se(ADD_SAFE(&x, max, lit(0))); \
assert_se(x == max); \
if (IS_SIGNED_INTEGER_TYPE(type)) \
assert_se(!ADD_SAFE(&x, min, lit(-1))); \
assert_se(!ADD_SAFE(&x, max, lit(1))); \
\
x = lit(5); \
assert_se(INC_SAFE(&x, lit(10))); \
assert_se(x == lit(15)); \
if (IS_SIGNED_INTEGER_TYPE(type)) { \
assert_se(INC_SAFE(&x, lit(-20))); \
assert_se(x == lit(-5)); \
} \
x = min; \
assert_se(INC_SAFE(&x, lit(0))); \
assert_se(x == min); \
if (IS_SIGNED_INTEGER_TYPE(type)) \
assert_se(!INC_SAFE(&x, lit(-1))); \
x = max; \
assert_se(INC_SAFE(&x, lit(0))); \
assert_se(x == max); \
assert_se(!INC_SAFE(&x, lit(1))); \
\
assert_se(SUB_SAFE(&x, lit(10), lit(5))); \
assert_se(x == lit(5)); \
if (IS_SIGNED_INTEGER_TYPE(type)) { \
assert_se(SUB_SAFE(&x, lit(5), lit(10))); \
assert_se(x == lit(-5)); \
\
assert_se(SUB_SAFE(&x, lit(5), lit(-10))); \
assert_se(x == lit(15)); \
} else \
assert_se(!SUB_SAFE(&x, lit(5), lit(10))); \
assert_se(SUB_SAFE(&x, min, lit(0))); \
assert_se(x == min); \
assert_se(SUB_SAFE(&x, max, lit(0))); \
assert_se(x == max); \
assert_se(!SUB_SAFE(&x, min, lit(1))); \
if (IS_SIGNED_INTEGER_TYPE(type)) \
assert_se(!SUB_SAFE(&x, max, lit(-1))); \
\
x = lit(10); \
assert_se(DEC_SAFE(&x, lit(5))); \
assert_se(x == lit(5)); \
if (IS_SIGNED_INTEGER_TYPE(type)) { \
assert_se(DEC_SAFE(&x, lit(10))); \
assert_se(x == lit(-5)); \
\
x = lit(5); \
assert_se(DEC_SAFE(&x, lit(-10))); \
assert_se(x == lit(15)); \
} else \
assert_se(!DEC_SAFE(&x, lit(10))); \
x = min; \
assert_se(DEC_SAFE(&x, lit(0))); \
assert_se(x == min); \
assert_se(!DEC_SAFE(&x, lit(1))); \
x = max; \
assert_se(DEC_SAFE(&x, lit(0))); \
if (IS_SIGNED_INTEGER_TYPE(type)) \
assert_se(!DEC_SAFE(&x, lit(-1))); \
\
assert_se(MUL_SAFE(&x, lit(2), lit(4))); \
assert_se(x == lit(8)); \
if (IS_SIGNED_INTEGER_TYPE(type)) { \
assert_se(MUL_SAFE(&x, lit(2), lit(-4))); \
assert_se(x == lit(-8)); \
} \
assert_se(MUL_SAFE(&x, lit(5), lit(0))); \
assert_se(x == lit(0)); \
assert_se(MUL_SAFE(&x, min, lit(1))); \
assert_se(x == min); \
if (IS_SIGNED_INTEGER_TYPE(type)) \
assert_se(!MUL_SAFE(&x, min, lit(2))); \
assert_se(MUL_SAFE(&x, max, lit(1))); \
assert_se(x == max); \
assert_se(!MUL_SAFE(&x, max, lit(2))); \
\
x = lit(2); \
assert_se(MUL_ASSIGN_SAFE(&x, lit(4))); \
assert_se(x == lit(8)); \
if (IS_SIGNED_INTEGER_TYPE(type)) { \
assert_se(MUL_ASSIGN_SAFE(&x, lit(-1))); \
assert_se(x == lit(-8)); \
} \
assert_se(MUL_ASSIGN_SAFE(&x, lit(0))); \
assert_se(x == lit(0)); \
x = min; \
assert_se(MUL_ASSIGN_SAFE(&x, lit(1))); \
assert_se(x == min); \
if IS_SIGNED_INTEGER_TYPE(type) \
assert_se(!MUL_ASSIGN_SAFE(&x, lit(2))); \
x = max; \
assert_se(MUL_ASSIGN_SAFE(&x, lit(1))); \
assert_se(x == max); \
assert_se(!MUL_ASSIGN_SAFE(&x, lit(2))); \
})
TEST(overflow_safe_math) {
int64_t i;
uint64_t u, *p;
/* basic tests */
TEST_OVERFLOW_MATH_BY_TYPE(int8_t, INT8_MIN, INT8_MAX, INT8_C);
TEST_OVERFLOW_MATH_BY_TYPE(int16_t, INT16_MIN, INT16_MAX, INT16_C);
TEST_OVERFLOW_MATH_BY_TYPE(int32_t, INT32_MIN, INT32_MAX, INT32_C);
TEST_OVERFLOW_MATH_BY_TYPE(int64_t, INT64_MIN, INT64_MAX, INT64_C);
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wtype-limits" /* Otherwise the compiler complains about comparisons to negative numbers always being false */
TEST_OVERFLOW_MATH_BY_TYPE(uint8_t, UINT8_C(0), UINT8_MAX, UINT8_C);
TEST_OVERFLOW_MATH_BY_TYPE(uint16_t, UINT16_C(0), UINT16_MAX, UINT16_C);
TEST_OVERFLOW_MATH_BY_TYPE(uint32_t, UINT32_C(0), UINT32_MAX, UINT32_C);
TEST_OVERFLOW_MATH_BY_TYPE(uint64_t, UINT64_C(0), UINT64_MAX, UINT64_C);
#pragma GCC diagnostic pop
/* make sure we handle pointers correctly */
p = &u;
assert_se(ADD_SAFE(p, 35, 15) && (u == 50));
assert_se(SUB_SAFE(p, 35, 15) && (u == 20));
assert_se(MUL_SAFE(p, 5, 10) && (u == 50));
assert_se(INC_SAFE(p, 10) && (u == 60));
assert_se(DEC_SAFE(p, 10) && (u == 50));
assert_se(MUL_ASSIGN_SAFE(p, 3) && (u == 150));
assert_se(!ADD_SAFE(p, UINT64_MAX, 1));
assert_se(!SUB_SAFE(p, 0, 1));
/* cross-type sanity checks */
assert_se(ADD_SAFE(&i, INT32_MAX, 1));
assert_se(SUB_SAFE(&i, INT32_MIN, 1));
assert_se(!ADD_SAFE(&i, UINT64_MAX, 0));
assert_se(ADD_SAFE(&u, INT32_MAX, 1));
assert_se(MUL_SAFE(&u, INT32_MAX, 2));
}
TEST(DIV_ROUND_UP) {
int div;
/* basic tests */
assert_se(DIV_ROUND_UP(0, 8) == 0);
assert_se(DIV_ROUND_UP(1, 8) == 1);
assert_se(DIV_ROUND_UP(8, 8) == 1);
assert_se(DIV_ROUND_UP(12, 8) == 2);
assert_se(DIV_ROUND_UP(16, 8) == 2);
/* test multiple evaluation */
div = 0;
assert_se(DIV_ROUND_UP(div++, 8) == 0 && div == 1);
assert_se(DIV_ROUND_UP(++div, 8) == 1 && div == 2);
assert_se(DIV_ROUND_UP(8, div++) == 4 && div == 3);
assert_se(DIV_ROUND_UP(8, ++div) == 2 && div == 4);
/* overflow test with exact division */
assert_se(sizeof(0U) == 4);
assert_se(0xfffffffaU % 10U == 0U);
assert_se(0xfffffffaU / 10U == 429496729U);
assert_se(DIV_ROUND_UP(0xfffffffaU, 10U) == 429496729U);
assert_se((0xfffffffaU + 10U - 1U) / 10U == 0U);
assert_se(0xfffffffaU / 10U + !!(0xfffffffaU % 10U) == 429496729U);
/* overflow test with rounded division */
assert_se(0xfffffffdU % 10U == 3U);
assert_se(0xfffffffdU / 10U == 429496729U);
assert_se(DIV_ROUND_UP(0xfffffffdU, 10U) == 429496730U);
assert_se((0xfffffffdU + 10U - 1U) / 10U == 0U);
assert_se(0xfffffffdU / 10U + !!(0xfffffffdU % 10U) == 429496730U);
}
TEST(PTR_TO_INT) {
/* Primary reason to have this test is to validate that pointers are large enough to hold entire int range */
assert_se(PTR_TO_INT(INT_TO_PTR(0)) == 0);
assert_se(PTR_TO_INT(INT_TO_PTR(1)) == 1);
assert_se(PTR_TO_INT(INT_TO_PTR(-1)) == -1);
assert_se(PTR_TO_INT(INT_TO_PTR(INT_MAX)) == INT_MAX);
assert_se(PTR_TO_INT(INT_TO_PTR(INT_MIN)) == INT_MIN);
}
TEST(IN_SET) {
assert_se(IN_SET(1, 1, 2));
assert_se(IN_SET(1, 1, 2, 3, 4));
assert_se(IN_SET(2, 1, 2, 3, 4));
assert_se(IN_SET(3, 1, 2, 3, 4));
assert_se(IN_SET(4, 1, 2, 3, 4));
assert_se(!IN_SET(0, 1, 2));
assert_se(!IN_SET(0, 1, 2, 3, 4));
struct {
unsigned x:3;
} t = { 1 };
assert_se(IN_SET(t.x, 1, 2));
assert_se(IN_SET(t.x, 1, 2, 3, 4));
assert_se(IN_SET(t.x, 2, 3, 4, 1));
assert_se(!IN_SET(t.x, 0, 2));
assert_se(!IN_SET(t.x, 2, 3, 4));
}
TEST(FOREACH_ARGUMENT) {
size_t i;
i = 0;
uint8_t u8, u8_1 = 1, u8_2 = 2, u8_3 = 3;
FOREACH_ARGUMENT(u8, u8_2, 8, 0xff, u8_1, u8_3, 0, 1) {
switch (i++) {
case 0: assert_se(u8 == u8_2); break;
case 1: assert_se(u8 == 8); break;
case 2: assert_se(u8 == 0xff); break;
case 3: assert_se(u8 == u8_1); break;
case 4: assert_se(u8 == u8_3); break;
case 5: assert_se(u8 == 0); break;
case 6: assert_se(u8 == 1); break;
default: assert_se(false);
}
}
assert_se(i == 7);
i = 0;
FOREACH_ARGUMENT(u8, 0) {
assert_se(u8 == 0);
assert_se(i++ == 0);
}
assert_se(i == 1);
i = 0;
FOREACH_ARGUMENT(u8, 0xff) {
assert_se(u8 == 0xff);
assert_se(i++ == 0);
}
assert_se(i == 1);
FOREACH_ARGUMENT(u8)
assert_se(false);
i = 0;
uint32_t u32, u32_1 = 0xffff0000, u32_2 = 10, u32_3 = 0xffff;
FOREACH_ARGUMENT(u32, 1, 100, u32_2, 1000, u32_3, u32_1, 1, 0) {
switch (i++) {
case 0: assert_se(u32 == 1); break;
case 1: assert_se(u32 == 100); break;
case 2: assert_se(u32 == u32_2); break;
case 3: assert_se(u32 == 1000); break;
case 4: assert_se(u32 == u32_3); break;
case 5: assert_se(u32 == u32_1); break;
case 6: assert_se(u32 == 1); break;
case 7: assert_se(u32 == 0); break;
default: assert_se(false);
}
}
assert_se(i == 8);
i = 0;
FOREACH_ARGUMENT(u32, 0) {
assert_se(u32 == 0);
assert_se(i++ == 0);
}
assert_se(i == 1);
i = 0;
FOREACH_ARGUMENT(u32, 1000) {
assert_se(u32 == 1000);
assert_se(i++ == 0);
}
assert_se(i == 1);
FOREACH_ARGUMENT(u32)
assert_se(false);
i = 0;
uint64_t u64, u64_1 = 0xffffffffffffffff, u64_2 = 50, u64_3 = 0xffff;
FOREACH_ARGUMENT(u64, 44, 0, u64_3, 100, u64_2, u64_1, 50000) {
switch (i++) {
case 0: assert_se(u64 == 44); break;
case 1: assert_se(u64 == 0); break;
case 2: assert_se(u64 == u64_3); break;
case 3: assert_se(u64 == 100); break;
case 4: assert_se(u64 == u64_2); break;
case 5: assert_se(u64 == u64_1); break;
case 6: assert_se(u64 == 50000); break;
default: assert_se(false);
}
}
assert_se(i == 7);
i = 0;
FOREACH_ARGUMENT(u64, 0) {
assert_se(u64 == 0);
assert_se(i++ == 0);
}
assert_se(i == 1);
i = 0;
FOREACH_ARGUMENT(u64, 0xff00ff00000000) {
assert_se(u64 == 0xff00ff00000000);
assert_se(i++ == 0);
}
assert_se(i == 1);
FOREACH_ARGUMENT(u64)
assert_se(false);
struct test {
int a;
char b;
};
i = 0;
struct test s,
s_1 = { .a = 0, .b = 'c', },
s_2 = { .a = 100000, .b = 'z', },
s_3 = { .a = 0xff, .b = 'q', },
s_4 = { .a = 1, .b = 'x', };
FOREACH_ARGUMENT(s, s_1, (struct test){ .a = 10, .b = 'd', }, s_2, (struct test){}, s_3, s_4) {
switch (i++) {
case 0: assert_se(s.a == 0 ); assert_se(s.b == 'c'); break;
case 1: assert_se(s.a == 10 ); assert_se(s.b == 'd'); break;
case 2: assert_se(s.a == 100000); assert_se(s.b == 'z'); break;
case 3: assert_se(s.a == 0 ); assert_se(s.b == 0 ); break;
case 4: assert_se(s.a == 0xff ); assert_se(s.b == 'q'); break;
case 5: assert_se(s.a == 1 ); assert_se(s.b == 'x'); break;
default: assert_se(false);
}
}
assert_se(i == 6);
i = 0;
FOREACH_ARGUMENT(s, (struct test){ .a = 1, .b = 'A', }) {
assert_se(s.a == 1);
assert_se(s.b == 'A');
assert_se(i++ == 0);
}
assert_se(i == 1);
FOREACH_ARGUMENT(s)
assert_se(false);
i = 0;
struct test *p, *p_1 = &s_1, *p_2 = &s_2, *p_3 = &s_3, *p_4 = &s_4;
FOREACH_ARGUMENT(p, p_1, NULL, p_2, p_3, NULL, p_4, NULL) {
switch (i++) {
case 0: assert_se(p == p_1); break;
case 1: ASSERT_NULL(p); break;
case 2: assert_se(p == p_2); break;
case 3: assert_se(p == p_3); break;
case 4: ASSERT_NULL(p); break;
case 5: assert_se(p == p_4); break;
case 6: ASSERT_NULL(p); break;
default: assert_se(false);
}
}
assert_se(i == 7);
i = 0;
FOREACH_ARGUMENT(p, p_3) {
assert_se(p == p_3);
assert_se(i++ == 0);
}
assert_se(i == 1);
FOREACH_ARGUMENT(p)
assert_se(false);
i = 0;
void *v, *v_1 = p_1, *v_2 = p_2, *v_3 = p_3;
uint32_t *u32p = &u32;
FOREACH_ARGUMENT(v, v_1, NULL, u32p, v_3, p_2, p_4, v_2, NULL) {
switch (i++) {
case 0: assert_se(v == v_1); break;
case 1: ASSERT_NULL(v); break;
case 2: assert_se(v == u32p); break;
case 3: assert_se(v == v_3); break;
case 4: assert_se(v == p_2); break;
case 5: assert_se(v == p_4); break;
case 6: assert_se(v == v_2); break;
case 7: ASSERT_NULL(v); break;
default: assert_se(false);
}
}
assert_se(i == 8);
i = 0;
FOREACH_ARGUMENT(v, NULL) {
ASSERT_NULL(v);
assert_se(i++ == 0);
}
assert_se(i == 1);
i = 0;
FOREACH_ARGUMENT(v, v_1) {
assert_se(v == v_1);
assert_se(i++ == 0);
}
assert_se(i == 1);
FOREACH_ARGUMENT(v)
assert_se(false);
}
TEST(ALIGN_TO) {
assert_se(ALIGN_TO(0, 1) == 0);
assert_se(ALIGN_TO(1, 1) == 1);
assert_se(ALIGN_TO(2, 1) == 2);
assert_se(ALIGN_TO(3, 1) == 3);
assert_se(ALIGN_TO(4, 1) == 4);
assert_se(ALIGN_TO(SIZE_MAX-1, 1) == SIZE_MAX-1);
assert_se(ALIGN_TO(SIZE_MAX, 1) == SIZE_MAX);
assert_se(ALIGN_TO(0, 2) == 0);
assert_se(ALIGN_TO(1, 2) == 2);
assert_se(ALIGN_TO(2, 2) == 2);
assert_se(ALIGN_TO(3, 2) == 4);
assert_se(ALIGN_TO(4, 2) == 4);
assert_se(ALIGN_TO(SIZE_MAX-3, 2) == SIZE_MAX-3);
assert_se(ALIGN_TO(SIZE_MAX-2, 2) == SIZE_MAX-1);
assert_se(ALIGN_TO(SIZE_MAX-1, 2) == SIZE_MAX-1);
assert_se(ALIGN_TO(SIZE_MAX, 2) == SIZE_MAX); /* overflow */
assert_se(ALIGN_TO(0, 4) == 0);
assert_se(ALIGN_TO(1, 4) == 4);
assert_se(ALIGN_TO(2, 4) == 4);
assert_se(ALIGN_TO(3, 4) == 4);
assert_se(ALIGN_TO(4, 4) == 4);
assert_se(ALIGN_TO(SIZE_MAX-3, 4) == SIZE_MAX-3);
assert_se(ALIGN_TO(SIZE_MAX-2, 4) == SIZE_MAX); /* overflow */
assert_se(ALIGN_TO(SIZE_MAX-1, 4) == SIZE_MAX); /* overflow */
assert_se(ALIGN_TO(SIZE_MAX, 4) == SIZE_MAX); /* overflow */
assert_se(ALIGN_TO_U64(0, 1) == 0);
assert_se(ALIGN_TO_U64(1, 1) == 1);
assert_se(ALIGN_TO_U64(2, 1) == 2);
assert_se(ALIGN_TO_U64(3, 1) == 3);
assert_se(ALIGN_TO_U64(4, 1) == 4);
assert_se(ALIGN_TO_U64(UINT64_MAX-1, 1) == UINT64_MAX-1);
assert_se(ALIGN_TO_U64(UINT64_MAX, 1) == UINT64_MAX);
assert_se(ALIGN_TO_U64(0, 2) == 0);
assert_se(ALIGN_TO_U64(1, 2) == 2);
assert_se(ALIGN_TO_U64(2, 2) == 2);
assert_se(ALIGN_TO_U64(3, 2) == 4);
assert_se(ALIGN_TO_U64(4, 2) == 4);
assert_se(ALIGN_TO_U64(UINT64_MAX-3, 2) == UINT64_MAX-3);
assert_se(ALIGN_TO_U64(UINT64_MAX-2, 2) == UINT64_MAX-1);
assert_se(ALIGN_TO_U64(UINT64_MAX-1, 2) == UINT64_MAX-1);
assert_se(ALIGN_TO_U64(UINT64_MAX, 2) == UINT64_MAX); /* overflow */
assert_se(ALIGN_TO_U64(0, 4) == 0);
assert_se(ALIGN_TO_U64(1, 4) == 4);
assert_se(ALIGN_TO_U64(2, 4) == 4);
assert_se(ALIGN_TO_U64(3, 4) == 4);
assert_se(ALIGN_TO_U64(4, 4) == 4);
assert_se(ALIGN_TO_U64(UINT64_MAX-3, 4) == UINT64_MAX-3);
assert_se(ALIGN_TO_U64(UINT64_MAX-2, 4) == UINT64_MAX); /* overflow */
assert_se(ALIGN_TO_U64(UINT64_MAX-1, 4) == UINT64_MAX); /* overflow */
assert_se(ALIGN_TO_U64(UINT64_MAX, 4) == UINT64_MAX); /* overflow */
assert_cc(CONST_ALIGN_TO(96, 512) == 512);
assert_cc(CONST_ALIGN_TO(511, 512) == 512);
assert_cc(CONST_ALIGN_TO(512, 512) == 512);
assert_cc(CONST_ALIGN_TO(513, 512) == 1024);
assert_cc(CONST_ALIGN_TO(sizeof(int), 64) == 64);
assert_cc(__builtin_types_compatible_p(typeof(CONST_ALIGN_TO(4, 3)), typeof(VOID_0)));
assert_cc(__builtin_types_compatible_p(typeof(CONST_ALIGN_TO(SIZE_MAX, 512)), typeof(VOID_0)));
}
TEST(align_down) {
assert_se(ALIGN_DOWN(0, 1) == 0);
assert_se(ALIGN_DOWN(1, 1) == 1);
assert_se(ALIGN_DOWN(2, 1) == 2);
assert_se(ALIGN_DOWN(3, 1) == 3);
assert_se(ALIGN_DOWN(4, 1) == 4);
assert_se(ALIGN_DOWN(SIZE_MAX-1, 1) == SIZE_MAX-1);
assert_se(ALIGN_DOWN(SIZE_MAX, 1) == SIZE_MAX);
assert_se(ALIGN_DOWN(0, 2) == 0);
assert_se(ALIGN_DOWN(1, 2) == 0);
assert_se(ALIGN_DOWN(2, 2) == 2);
assert_se(ALIGN_DOWN(3, 2) == 2);
assert_se(ALIGN_DOWN(4, 2) == 4);
assert_se(ALIGN_DOWN(SIZE_MAX-1, 2) == SIZE_MAX-1);
assert_se(ALIGN_DOWN(SIZE_MAX, 2) == SIZE_MAX-1);
assert_se(ALIGN_DOWN(0, 4) == 0);
assert_se(ALIGN_DOWN(1, 4) == 0);
assert_se(ALIGN_DOWN(2, 4) == 0);
assert_se(ALIGN_DOWN(3, 4) == 0);
assert_se(ALIGN_DOWN(4, 4) == 4);
assert_se(ALIGN_DOWN(SIZE_MAX-1, 4) == SIZE_MAX-3);
assert_se(ALIGN_DOWN(SIZE_MAX, 4) == SIZE_MAX-3);
assert_se(ALIGN_DOWN_U64(0, 1) == 0);
assert_se(ALIGN_DOWN_U64(1, 1) == 1);
assert_se(ALIGN_DOWN_U64(2, 1) == 2);
assert_se(ALIGN_DOWN_U64(3, 1) == 3);
assert_se(ALIGN_DOWN_U64(4, 1) == 4);
assert_se(ALIGN_DOWN_U64(UINT64_MAX-1, 1) == UINT64_MAX-1);
assert_se(ALIGN_DOWN_U64(UINT64_MAX, 1) == UINT64_MAX);
assert_se(ALIGN_DOWN_U64(0, 2) == 0);
assert_se(ALIGN_DOWN_U64(1, 2) == 0);
assert_se(ALIGN_DOWN_U64(2, 2) == 2);
assert_se(ALIGN_DOWN_U64(3, 2) == 2);
assert_se(ALIGN_DOWN_U64(4, 2) == 4);
assert_se(ALIGN_DOWN_U64(UINT64_MAX-1, 2) == UINT64_MAX-1);
assert_se(ALIGN_DOWN_U64(UINT64_MAX, 2) == UINT64_MAX-1);
assert_se(ALIGN_DOWN_U64(0, 4) == 0);
assert_se(ALIGN_DOWN_U64(1, 4) == 0);
assert_se(ALIGN_DOWN_U64(2, 4) == 0);
assert_se(ALIGN_DOWN_U64(3, 4) == 0);
assert_se(ALIGN_DOWN_U64(4, 4) == 4);
assert_se(ALIGN_DOWN_U64(UINT64_MAX-1, 4) == UINT64_MAX-3);
assert_se(ALIGN_DOWN_U64(UINT64_MAX, 4) == UINT64_MAX-3);
}
TEST(align_offset) {
assert_se(ALIGN_OFFSET(0, 1) == 0);
assert_se(ALIGN_OFFSET(1, 1) == 0);
assert_se(ALIGN_OFFSET(2, 1) == 0);
assert_se(ALIGN_OFFSET(3, 1) == 0);
assert_se(ALIGN_OFFSET(4, 1) == 0);
assert_se(ALIGN_OFFSET(SIZE_MAX-1, 1) == 0);
assert_se(ALIGN_OFFSET(SIZE_MAX, 1) == 0);
assert_se(ALIGN_OFFSET(0, 2) == 0);
assert_se(ALIGN_OFFSET(1, 2) == 1);
assert_se(ALIGN_OFFSET(2, 2) == 0);
assert_se(ALIGN_OFFSET(3, 2) == 1);
assert_se(ALIGN_OFFSET(4, 2) == 0);
assert_se(ALIGN_OFFSET(SIZE_MAX-1, 2) == 0);
assert_se(ALIGN_OFFSET(SIZE_MAX, 2) == 1);
assert_se(ALIGN_OFFSET(0, 4) == 0);
assert_se(ALIGN_OFFSET(1, 4) == 1);
assert_se(ALIGN_OFFSET(2, 4) == 2);
assert_se(ALIGN_OFFSET(3, 4) == 3);
assert_se(ALIGN_OFFSET(4, 4) == 0);
assert_se(ALIGN_OFFSET(SIZE_MAX-1, 4) == 2);
assert_se(ALIGN_OFFSET(SIZE_MAX, 4) == 3);
assert_se(ALIGN_OFFSET_U64(0, 1) == 0);
assert_se(ALIGN_OFFSET_U64(1, 1) == 0);
assert_se(ALIGN_OFFSET_U64(2, 1) == 0);
assert_se(ALIGN_OFFSET_U64(3, 1) == 0);
assert_se(ALIGN_OFFSET_U64(4, 1) == 0);
assert_se(ALIGN_OFFSET_U64(UINT64_MAX-1, 1) == 0);
assert_se(ALIGN_OFFSET_U64(UINT64_MAX, 1) == 0);
assert_se(ALIGN_OFFSET_U64(0, 2) == 0);
assert_se(ALIGN_OFFSET_U64(1, 2) == 1);
assert_se(ALIGN_OFFSET_U64(2, 2) == 0);
assert_se(ALIGN_OFFSET_U64(3, 2) == 1);
assert_se(ALIGN_OFFSET_U64(4, 2) == 0);
assert_se(ALIGN_OFFSET_U64(UINT64_MAX-1, 2) == 0);
assert_se(ALIGN_OFFSET_U64(UINT64_MAX, 2) == 1);
assert_se(ALIGN_OFFSET_U64(0, 4) == 0);
assert_se(ALIGN_OFFSET_U64(1, 4) == 1);
assert_se(ALIGN_OFFSET_U64(2, 4) == 2);
assert_se(ALIGN_OFFSET_U64(3, 4) == 3);
assert_se(ALIGN_OFFSET_U64(4, 4) == 0);
assert_se(ALIGN_OFFSET_U64(UINT64_MAX-1, 4) == 2);
assert_se(ALIGN_OFFSET_U64(UINT64_MAX, 4) == 3);
}
TEST(flags) {
enum {
F1 = 1 << 0,
F2 = 1 << 1,
F3 = 1 << 2,
F_ALL = F1 | F2 | F3
};
unsigned n, f;
assert_se(FLAGS_SET(0, 0));
assert_se(FLAGS_SET(F1, F1));
assert_se(FLAGS_SET(F1 | F2, F1));
assert_se(FLAGS_SET(F1 | F3, F1 | F3));
assert_se(FLAGS_SET(F1 | F2 | F3, F_ALL));
assert_se(!FLAGS_SET(0, F1));
assert_se(!FLAGS_SET(F2, F1));
assert_se(!FLAGS_SET(F1 | F2, F3));
assert_se(!FLAGS_SET(F1 | F2, F1 | F3));
assert_se(!FLAGS_SET(F1 | F2 | F3, ~F_ALL));
/* Check for no double eval. */
n = F2;
f = F1;
assert_se(!FLAGS_SET(--n, ++f));
assert_se(n == F1);
assert_se(f == F2);
SET_FLAG(n, F3, true);
assert_se(n == (F1 | F3));
SET_FLAG(n, F2, false);
assert_se(n == (F1 | F3));
SET_FLAG(n, F3, false);
assert_se(n == F1);
SET_FLAG(n, F1, true);
assert_se(n == F1);
SET_FLAG(n, F1 | F3, true);
assert_se(n == (F1 | F3));
SET_FLAG(n, F_ALL, false);
assert_se(n == 0);
assert_se(UPDATE_FLAG(0, 0, true) == 0);
assert_se(UPDATE_FLAG(0, F1, true) == F1);
assert_se(UPDATE_FLAG(0, F1 | F2, true) == (F1 | F2));
assert_se(UPDATE_FLAG(F1, 0, true) == F1);
assert_se(UPDATE_FLAG(F1, F1, true) == F1);
assert_se(UPDATE_FLAG(F1, F3, true) == (F1 | F3));
assert_se(UPDATE_FLAG(F1, F1 | F3, true) == (F1 | F3));
assert_se(UPDATE_FLAG(F1, F_ALL, true) == F_ALL);
assert_se(UPDATE_FLAG(0, 0, false) == 0);
assert_se(UPDATE_FLAG(0, F1, false) == 0);
assert_se(UPDATE_FLAG(0, F1 | F2, false) == 0);
assert_se(UPDATE_FLAG(F1, 0, false) == F1);
assert_se(UPDATE_FLAG(F1, F1, false) == 0);
assert_se(UPDATE_FLAG(F1, F3, false) == F1);
assert_se(UPDATE_FLAG(F1, F1 | F3, false) == 0);
assert_se(UPDATE_FLAG(F1, F2 | F3, false) == F1);
assert_se(UPDATE_FLAG(F1, F_ALL, false) == 0);
assert_se(UPDATE_FLAG(F_ALL, F_ALL, false) == 0);
/* Check for no double eval. */
n = F2;
f = F1;
assert_se(UPDATE_FLAG(--n, ++f, true) == (F1 | F2));
assert_se(n == F1);
assert_se(f == F2);
}
TEST(DECIMAL_STR_WIDTH) {
assert_se(DECIMAL_STR_WIDTH(0) == 1);
assert_se(DECIMAL_STR_WIDTH(1) == 1);
assert_se(DECIMAL_STR_WIDTH(2) == 1);
assert_se(DECIMAL_STR_WIDTH(9) == 1);
assert_se(DECIMAL_STR_WIDTH(10) == 2);
assert_se(DECIMAL_STR_WIDTH(11) == 2);
assert_se(DECIMAL_STR_WIDTH(99) == 2);
assert_se(DECIMAL_STR_WIDTH(100) == 3);
assert_se(DECIMAL_STR_WIDTH(101) == 3);
assert_se(DECIMAL_STR_WIDTH(-1) == 2);
assert_se(DECIMAL_STR_WIDTH(-2) == 2);
assert_se(DECIMAL_STR_WIDTH(-9) == 2);
assert_se(DECIMAL_STR_WIDTH(-10) == 3);
assert_se(DECIMAL_STR_WIDTH(-11) == 3);
assert_se(DECIMAL_STR_WIDTH(-99) == 3);
assert_se(DECIMAL_STR_WIDTH(-100) == 4);
assert_se(DECIMAL_STR_WIDTH(-101) == 4);
assert_se(DECIMAL_STR_WIDTH(UINT64_MAX) == STRLEN("18446744073709551615"));
assert_se(DECIMAL_STR_WIDTH(INT64_MAX) == STRLEN("9223372036854775807"));
assert_se(DECIMAL_STR_WIDTH(INT64_MIN) == STRLEN("-9223372036854775808"));
}
TEST(DECIMAL_STR_MAX) {
int8_t s8_longest = INT8_MIN;
int16_t s16_longest = INT16_MIN;
int32_t s32_longest = INT32_MIN;
int64_t s64_longest = INT64_MIN;
uint8_t u8_longest = UINT8_MAX;
uint16_t u16_longest = UINT16_MAX;
uint32_t u32_longest = UINT32_MAX;
uint64_t u64_longest = UINT64_MAX;
/* NB: Always add +1, because DECIMAL_STR_MAX() includes space for trailing NUL byte, but
* DECIMAL_STR_WIDTH() does not! */
assert_se(DECIMAL_STR_MAX(int8_t) == DECIMAL_STR_WIDTH(s8_longest)+1);
assert_se(DECIMAL_STR_MAX(int16_t) == DECIMAL_STR_WIDTH(s16_longest)+1);
assert_se(DECIMAL_STR_MAX(int32_t) == DECIMAL_STR_WIDTH(s32_longest)+1);
assert_se(DECIMAL_STR_MAX(int64_t) == DECIMAL_STR_WIDTH(s64_longest)+1);
assert_se(DECIMAL_STR_MAX(uint8_t) == DECIMAL_STR_WIDTH(u8_longest)+1);
assert_se(DECIMAL_STR_MAX(uint16_t) == DECIMAL_STR_WIDTH(u16_longest)+1);
assert_se(DECIMAL_STR_MAX(uint32_t) == DECIMAL_STR_WIDTH(u32_longest)+1);
assert_se(DECIMAL_STR_MAX(uint64_t) == DECIMAL_STR_WIDTH(u64_longest)+1);
}
TEST(PTR_SUB1) {
static const uint64_t x[4] = { 2, 3, 4, 5 };
const uint64_t *p;
p = x + ELEMENTSOF(x)-1;
assert_se(*p == 5);
p = PTR_SUB1(p, x);
assert_se(*p == 4);
p = PTR_SUB1(p, x);
assert_se(*p == 3);
p = PTR_SUB1(p, x);
assert_se(*p == 2);
p = PTR_SUB1(p, x);
assert_se(!p);
p = PTR_SUB1(p, x);
assert_se(!p);
}
TEST(ISPOWEROF2) {
uint64_t u;
int64_t i;
/* First, test constant expressions */
assert_se(!ISPOWEROF2(-2));
assert_se(!ISPOWEROF2(-1));
assert_se(!ISPOWEROF2(0));
assert_se(ISPOWEROF2(1));
assert_se(ISPOWEROF2(2));
assert_se(!ISPOWEROF2(3));
assert_se(ISPOWEROF2(4));
assert_se(!ISPOWEROF2(5));
assert_se(!ISPOWEROF2(6));
assert_se(!ISPOWEROF2(7));
assert_se(ISPOWEROF2(8));
assert_se(!ISPOWEROF2(9));
assert_se(!ISPOWEROF2(1022));
assert_se(ISPOWEROF2(1024));
assert_se(!ISPOWEROF2(1025));
assert_se(!ISPOWEROF2(UINT64_C(0xffffffff)));
assert_se(ISPOWEROF2(UINT64_C(0x100000000)));
assert_se(!ISPOWEROF2(UINT64_C(0x100000001)));
/* Then, test dynamic expressions, and if they are side-effect free */
i = -2;
assert_se(!ISPOWEROF2(i++));
assert_se(i == -1);
assert_se(!ISPOWEROF2(i++));
assert_se(i == 0);
assert_se(!ISPOWEROF2(i++));
assert_se(i == 1);
assert_se(ISPOWEROF2(i++));
assert_se(i == 2);
assert_se(ISPOWEROF2(i++));
assert_se(i == 3);
assert_se(!ISPOWEROF2(i++));
assert_se(i == 4);
assert_se(ISPOWEROF2(i++));
assert_se(i == 5);
assert_se(!ISPOWEROF2(i));
u = 0;
assert_se(!ISPOWEROF2(u++));
assert_se(u == 1);
assert_se(ISPOWEROF2(u++));
assert_se(u == 2);
assert_se(ISPOWEROF2(u++));
assert_se(u == 3);
assert_se(!ISPOWEROF2(u++));
assert_se(u == 4);
assert_se(ISPOWEROF2(u++));
assert_se(u == 5);
assert_se(!ISPOWEROF2(u));
}
TEST(ALIGNED) {
assert_se(IS_ALIGNED16(NULL));
assert_se(IS_ALIGNED32(NULL));
assert_se(IS_ALIGNED64(NULL));
uint64_t u64;
uint32_t u32;
uint16_t u16;
assert_se(IS_ALIGNED16(&u16));
assert_se(IS_ALIGNED16(&u32));
assert_se(IS_ALIGNED16(&u64));
assert_se(IS_ALIGNED32(&u32));
assert_se(IS_ALIGNED32(&u64));
assert_se(IS_ALIGNED64(&u64));
_align_(32) uint8_t ua256;
_align_(8) uint8_t ua64;
_align_(4) uint8_t ua32;
_align_(2) uint8_t ua16;
assert_se(IS_ALIGNED16(&ua256));
assert_se(IS_ALIGNED32(&ua256));
assert_se(IS_ALIGNED64(&ua256));
assert_se(IS_ALIGNED16(&ua64));
assert_se(IS_ALIGNED32(&ua64));
assert_se(IS_ALIGNED64(&ua64));
assert_se(IS_ALIGNED16(&ua32));
assert_se(IS_ALIGNED32(&ua32));
assert_se(IS_ALIGNED16(&ua16));
#ifdef __x86_64__
/* Conditionalized on x86-64, since there we know for sure that all three types are aligned to
* their size. Too lazy to figure it out for other archs */
void *p = UINT_TO_PTR(1); /* definitely not aligned */
assert_se(!IS_ALIGNED16(p));
assert_se(!IS_ALIGNED32(p));
assert_se(!IS_ALIGNED64(p));
assert_se(IS_ALIGNED16(ALIGN2_PTR(p)));
assert_se(IS_ALIGNED32(ALIGN4_PTR(p)));
assert_se(IS_ALIGNED64(ALIGN8_PTR(p)));
p = UINT_TO_PTR(-1); /* also definitely not aligned */
assert_se(!IS_ALIGNED16(p));
assert_se(!IS_ALIGNED32(p));
assert_se(!IS_ALIGNED64(p));
#endif
}
TEST(FOREACH_ARRAY) {
int a[10] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
int b[10] = { 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
int x, n;
x = n = 0;
FOREACH_ARRAY(i, a, 10) {
x += *i;
n++;
}
assert_se(x == 45);
assert_se(n == 10);
x = n = 0;
FOREACH_ARRAY(i, a, 10)
FOREACH_ARRAY(j, b, 10) {
x += (*i) * (*j);
n++;
}
assert_se(x == 45 * 45);
assert_se(n == 10 * 10);
x = n = 0;
FOREACH_ARRAY(i, a, 5)
FOREACH_ARRAY(j, b, 5) {
x += (*i) * (*j);
n++;
}
assert_se(x == 10 * 35);
assert_se(n == 5 * 5);
x = n = 0;
FOREACH_ARRAY(i, a, 0)
FOREACH_ARRAY(j, b, 0) {
x += (*i) * (*j);
n++;
}
assert_se(x == 0);
assert_se(n == 0);
x = n = 0;
FOREACH_ARRAY(i, a, -1)
FOREACH_ARRAY(j, b, -1) {
x += (*i) * (*j);
n++;
}
assert_se(x == 0);
assert_se(n == 0);
}
#define TEST_ROUND_UP_BY_TYPE(type, max_value) \
({ \
type x, y; \
x = 0, y = 1; \
assert_se(ROUND_UP(x, y) == 0); \
x = 0, y = 2; \
assert_se(ROUND_UP(x, y) == 0); \
x = 0, y = 3; \
assert_se(ROUND_UP(x, y) == 0); \
x = 0, y = 4; \
assert_se(ROUND_UP(x, y) == 0); \
x = 1, y = 1; \
assert_se(ROUND_UP(x, y) == 1); \
x = 1, y = 2; \
assert_se(ROUND_UP(x, y) == 2); \
x = 1, y = 3; \
assert_se(ROUND_UP(x, y) == 3); \
x = 1, y = 4; \
assert_se(ROUND_UP(x, y) == 4); \
x = 2, y = 1; \
assert_se(ROUND_UP(x, y) == 2); \
x = 2, y = 2; \
assert_se(ROUND_UP(x, y) == 2); \
x = 2, y = 3; \
assert_se(ROUND_UP(x, y) == 3); \
x = 2, y = 4; \
assert_se(ROUND_UP(x, y) == 4); \
x = 3, y = 1; \
assert_se(ROUND_UP(x, y) == 3); \
x = 3, y = 2; \
assert_se(ROUND_UP(x, y) == 4); \
x = 3, y = 3; \
assert_se(ROUND_UP(x, y) == 3); \
x = 3, y = 4; \
assert_se(ROUND_UP(x, y) == 4); \
x = 4, y = 1; \
assert_se(ROUND_UP(x, y) == 4); \
x = 4, y = 2; \
assert_se(ROUND_UP(x, y) == 4); \
x = 4, y = 3; \
assert_se(ROUND_UP(x, y) == 6); \
x = 4, y = 4; \
assert_se(ROUND_UP(x, y) == 4); \
x = max_value, y = 1; \
assert_se(ROUND_UP(x, y) == max_value); \
x = max_value, y = 2; \
assert_se(ROUND_UP(x, y) == max_value); \
x = max_value, y = 3; \
assert_se(ROUND_UP(x, y) == max_value); \
x = max_value, y = 4; \
assert_se(ROUND_UP(x, y) == max_value); \
x = max_value-1, y = 1; \
assert_se(ROUND_UP(x, y) == max_value-1); \
x = max_value-1, y = 2; \
assert_se(ROUND_UP(x, y) == max_value-1); \
x = max_value-1, y = 4; \
assert_se(ROUND_UP(x, y) == max_value); \
})
TEST(ROUND_UP) {
TEST_ROUND_UP_BY_TYPE(uint8_t, UINT8_MAX);
TEST_ROUND_UP_BY_TYPE(uint16_t, UINT16_MAX);
TEST_ROUND_UP_BY_TYPE(uint32_t, UINT32_MAX);
TEST_ROUND_UP_BY_TYPE(uint64_t, UINT64_MAX);
}
TEST(u64_multiply_safe) {
assert_se(u64_multiply_safe(0, 0) == 0);
assert_se(u64_multiply_safe(10, 0) == 0);
assert_se(u64_multiply_safe(0, 10) == 0);
assert_se(u64_multiply_safe(10, 10) == 100);
assert_se(u64_multiply_safe(UINT64_MAX, 0) == 0);
assert_se(u64_multiply_safe(UINT64_MAX, 1) == UINT64_MAX);
assert_se(u64_multiply_safe(UINT64_MAX, 2) == 0);
assert_se(u64_multiply_safe(0, UINT64_MAX) == 0);
assert_se(u64_multiply_safe(1, UINT64_MAX) == UINT64_MAX);
assert_se(u64_multiply_safe(2, UINT64_MAX) == 0);
assert_se(u64_multiply_safe(UINT64_MAX / 2, 0) == 0);
assert_se(u64_multiply_safe(UINT64_MAX / 2, 1) == UINT64_MAX / 2);
assert_se(u64_multiply_safe(UINT64_MAX / 2, 2) == UINT64_MAX - 1);
assert_se(u64_multiply_safe(UINT64_MAX / 2, 3) == 0);
assert_se(u64_multiply_safe(0, UINT64_MAX / 2) == 0);
assert_se(u64_multiply_safe(1, UINT64_MAX / 2) == UINT64_MAX / 2);
assert_se(u64_multiply_safe(2, UINT64_MAX / 2) == UINT64_MAX - 1);
assert_se(u64_multiply_safe(3, UINT64_MAX / 2) == 0);
assert_se(u64_multiply_safe(UINT64_MAX, UINT64_MAX) == 0);
}
static void test_once_impl(void) {
static unsigned count = 0;
if (ONCE) {
log_info("This should be logged only once.");
count++;
}
ASSERT_EQ(count, 1u);
}
TEST(once) {
for (unsigned i = 0; i < 20; i++)
test_once_impl();
}
DEFINE_TEST_MAIN(LOG_INFO);
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