73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
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#include <cstdint>
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#include <limits>
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#include <test.hpp>
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#include <protozero/byteswap.hpp>
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static int32_t check_swap_4(int32_t data) noexcept {
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protozero::detail::byteswap_inplace(&data);
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protozero::detail::byteswap_inplace(&data);
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return data;
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}
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static int64_t check_swap_8(int64_t data) noexcept {
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protozero::detail::byteswap_inplace(&data);
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protozero::detail::byteswap_inplace(&data);
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return data;
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}
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TEST_CASE("byte swapping") {
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REQUIRE(0 == check_swap_4(0));
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REQUIRE(1 == check_swap_4(1));
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REQUIRE(-1 == check_swap_4(-1));
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REQUIRE(395503 == check_swap_4(395503));
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REQUIRE(-804022 == check_swap_4(-804022));
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REQUIRE(std::numeric_limits<int32_t>::max() == check_swap_4(std::numeric_limits<int32_t>::max()));
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REQUIRE(std::numeric_limits<int32_t>::min() == check_swap_4(std::numeric_limits<int32_t>::min()));
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REQUIRE(0 == check_swap_8(0));
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REQUIRE(1 == check_swap_8(1));
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REQUIRE(-1 == check_swap_8(-1));
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REQUIRE(395503ll == check_swap_8(395503ll));
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REQUIRE(-804022ll == check_swap_8(-804022ll));
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REQUIRE(3280329805ll == check_swap_8(3280329805ll));
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REQUIRE(-2489204041ll == check_swap_8(-2489204041ll));
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REQUIRE(std::numeric_limits<int64_t>::max() == check_swap_8(std::numeric_limits<int64_t>::max()));
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REQUIRE(std::numeric_limits<int64_t>::min() == check_swap_8(std::numeric_limits<int64_t>::min()));
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}
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TEST_CASE("byte swap uint32_t") {
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uint32_t a = 17;
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protozero::detail::byteswap_inplace(&a);
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protozero::detail::byteswap_inplace(&a);
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REQUIRE(17 == a);
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}
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TEST_CASE("byte swap uint64_t") {
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uint64_t a = 347529808;
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protozero::detail::byteswap_inplace(&a);
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protozero::detail::byteswap_inplace(&a);
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REQUIRE(347529808 == a);
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}
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TEST_CASE("byte swap double") {
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double a = 1.1;
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protozero::detail::byteswap_inplace(&a);
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protozero::detail::byteswap_inplace(&a);
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REQUIRE(a == Approx(1.1));
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}
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TEST_CASE("byte swap float") {
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float a = 1.1f;
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protozero::detail::byteswap_inplace(&a);
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protozero::detail::byteswap_inplace(&a);
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REQUIRE(a == Approx(1.1f));
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}
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