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ИУП: интенсив 7 дней + диагностический пакет (32 вопроса, 9 задач с автопроверкой)

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Kodlo-chan
2026-09-23 16:05:09 +07:00
commit 4cd63b3d4d
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diag/tasks/01_bits/test_bits.cpp
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#include <cstdio>
#include <cstdint>
#include "solution.cpp"
static int failures = 0;
#define CHECK(cond, name) do { if (cond) std::printf("ok %s\n", name); \
else { std::printf("FAIL %s (line %d)\n", name, __LINE__); ++failures; } } while (0)
int main() {
// popcount
CHECK(popcount32(0u) == 0, "popcount(0) == 0");
CHECK(popcount32(1u) == 1, "popcount(1) == 1");
CHECK(popcount32(0xFFFFFFFFu) == 32, "popcount(0xFFFFFFFF) == 32");
CHECK(popcount32(0x80000000u) == 1, "popcount(1<<31) == 1");
CHECK(popcount32(0x0000000Bu) == 3, "popcount(0b1011) == 3");
CHECK(popcount32(0xA5A5A5A5u) == 16, "popcount(0xA5A5A5A5) == 16");
// reverse
CHECK(reverse_bits32(1u) == 0x80000000u, "reverse(1) == 0x80000000");
CHECK(reverse_bits32(0x80000000u) == 1u, "reverse(0x80000000) == 1");
CHECK(reverse_bits32(0x12345678u) == 0x1E6A2C48u, "reverse(0x12345678) == 0x1E6A2C48");
CHECK(reverse_bits32(0xFFFFFFFFu) == 0xFFFFFFFFu, "reverse(0xFFFFFFFF) == 0xFFFFFFFF");
CHECK(reverse_bits32(0u) == 0u, "reverse(0) == 0");
// power of two
CHECK(!is_power_of_two(0u), "pow2(0) == false");
CHECK(is_power_of_two(1u), "pow2(1) == true");
CHECK(is_power_of_two(2u), "pow2(2) == true");
CHECK(!is_power_of_two(3u), "pow2(3) == false");
CHECK(is_power_of_two(1024u), "pow2(1024) == true");
CHECK(is_power_of_two(0x80000000u), "pow2(1<<31) == true");
CHECK(!is_power_of_two(0x80000001u), "pow2(0x80000001) == false");
// bswap
CHECK(bswap32(0x11223344u) == 0x44332211u, "bswap(0x11223344) == 0x44332211");
CHECK(bswap32(0x000000FFu) == 0xFF000000u, "bswap(0x000000FF) == 0xFF000000");
CHECK(bswap32(0xDEADBEEFu) == 0xEFBEADDEu, "bswap(0xDEADBEEF) == 0xEFBEADDE");
std::printf(failures ? "\nFAILURES: %d\n" : "\nALL PASS\n", failures);
return failures ? 1 : 0;
}