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#include <cstdint>
#include <limits>
#include <test.hpp>
#include <protozero/byteswap.hpp>
namespace {
int32_t check_swap_4(int32_t data) noexcept {
protozero::byteswap_inplace(&data);
protozero::byteswap_inplace(&data);
return data;
}
int64_t check_swap_8(int64_t data) noexcept {
protozero::byteswap_inplace(&data);
protozero::byteswap_inplace(&data);
return data;
}
} // anonymous namespace
TEST_CASE("byte swapping") {
REQUIRE(0 == check_swap_4(0));
REQUIRE(1 == check_swap_4(1));
REQUIRE(-1 == check_swap_4(-1));
REQUIRE(395503 == check_swap_4(395503));
REQUIRE(-804022 == check_swap_4(-804022));
REQUIRE(std::numeric_limits<int32_t>::max() == check_swap_4(std::numeric_limits<int32_t>::max()));
REQUIRE(std::numeric_limits<int32_t>::min() == check_swap_4(std::numeric_limits<int32_t>::min()));
REQUIRE(0 == check_swap_8(0));
REQUIRE(1 == check_swap_8(1));
REQUIRE(-1 == check_swap_8(-1));
REQUIRE(395503LL == check_swap_8(395503LL));
REQUIRE(-804022LL == check_swap_8(-804022LL));
REQUIRE(3280329805LL == check_swap_8(3280329805LL));
REQUIRE(-2489204041LL == check_swap_8(-2489204041LL));
REQUIRE(std::numeric_limits<int64_t>::max() == check_swap_8(std::numeric_limits<int64_t>::max()));
REQUIRE(std::numeric_limits<int64_t>::min() == check_swap_8(std::numeric_limits<int64_t>::min()));
}
TEST_CASE("byte swap uint32_t") {
uint32_t a = 17;
protozero::byteswap_inplace(&a);
protozero::byteswap_inplace(&a);
REQUIRE(17 == a);
}
TEST_CASE("byte swap uint64_t") {
uint64_t a = 347529808;
protozero::byteswap_inplace(&a);
protozero::byteswap_inplace(&a);
REQUIRE(347529808 == a);
}
TEST_CASE("byte swap double") {
double a = 1.1;
protozero::byteswap_inplace(&a);
protozero::byteswap_inplace(&a);
REQUIRE(a == Approx(1.1));
}
TEST_CASE("byte swap float") {
float a = 1.1F;
protozero::byteswap_inplace(&a);
protozero::byteswap_inplace(&a);
REQUIRE(a == Approx(1.1F));
}
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