109 lines
2.1 KiB
C++
109 lines
2.1 KiB
C++
#include "util/bits.hh"
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#include <catch2/catch_test_macros.hpp>
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#define TAG "[util][bits]"
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TEST_CASE("8 bits", TAG) {
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uint8_t num = 45;
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CHECK(get_bit(num, 0));
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CHECK(!get_bit(num, 1));
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CHECK(get_bit(num, 5));
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CHECK(!get_bit(num, 6));
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CHECK(!get_bit(num, 7));
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set_bit(num, 6);
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CHECK(get_bit(num, 6));
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rst_bit(num, 6);
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CHECK(!get_bit(num, 6));
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chg_bit(num, 5, false);
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CHECK(!get_bit(num, 5));
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chg_bit(num, 5, true);
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CHECK(get_bit(num, 5));
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// 0b0110
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CHECK(bit_range(num, 1, 4) == 6);
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}
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TEST_CASE("16 bits", TAG) {
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uint16_t num = 34587;
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CHECK(get_bit(num, 0));
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CHECK(get_bit(num, 1));
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CHECK(!get_bit(num, 5));
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CHECK(!get_bit(num, 14));
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CHECK(get_bit(num, 15));
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set_bit(num, 14);
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CHECK(get_bit(num, 14));
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rst_bit(num, 14);
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CHECK(!get_bit(num, 14));
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chg_bit(num, 5, true);
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CHECK(get_bit(num, 5));
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// num = 45
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chg_bit(num, 5, false);
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CHECK(!get_bit(num, 5));
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// 0b1000110
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CHECK(bit_range(num, 2, 8) == 70);
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}
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TEST_CASE("32 bits", TAG) {
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uint32_t num = 3194142523;
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CHECK(get_bit(num, 0));
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CHECK(get_bit(num, 1));
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CHECK(get_bit(num, 12));
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CHECK(get_bit(num, 29));
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CHECK(!get_bit(num, 30));
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CHECK(get_bit(num, 31));
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set_bit(num, 30);
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CHECK(get_bit(num, 30));
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rst_bit(num, 30);
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CHECK(!get_bit(num, 30));
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chg_bit(num, 12, false);
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CHECK(!get_bit(num, 12));
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chg_bit(num, 12, true);
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CHECK(get_bit(num, 12));
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// 0b10011000101011111100111
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CHECK(bit_range(num, 3, 25) == 5003239);
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}
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TEST_CASE("64 bits", TAG) {
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uint64_t num = 58943208889991935;
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CHECK(get_bit(num, 0));
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CHECK(get_bit(num, 1));
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CHECK(!get_bit(num, 10));
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CHECK(get_bit(num, 55));
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CHECK(!get_bit(num, 60));
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set_bit(num, 63);
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CHECK(get_bit(num, 63));
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rst_bit(num, 63);
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CHECK(!get_bit(num, 63));
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chg_bit(num, 10, true);
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CHECK(get_bit(num, 10));
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chg_bit(num, 10, false);
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CHECK(!get_bit(num, 10));
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// 0b011010001
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CHECK(bit_range(num, 39, 47) == 209);
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}
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#undef TAG
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