mirror of
https://github.com/m5stack/M5Utility.git
synced 2026-05-20 11:27:29 -07:00
GOB
104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/*
|
|
* SPDX-FileCopyrightText: 2025 M5Stack Technology CO LTD
|
|
*
|
|
* SPDX-License-Identifier: MIT
|
|
*/
|
|
/*
|
|
UnitTest for M5Utility
|
|
*/
|
|
#include <gtest/gtest.h>
|
|
#include <M5Utility.hpp>
|
|
#include <M5Unified.hpp>
|
|
#include <limits>
|
|
|
|
#if defined(__SIZEOF_INT128__)
|
|
#pragma message "Support I128"
|
|
namespace {
|
|
|
|
using u128_t = unsigned __int128;
|
|
using i128_t = __int128;
|
|
|
|
constexpr u128_t make_u128(uint64_t hi, uint64_t lo)
|
|
{
|
|
return ((u128_t)hi << 64) | (u128_t)lo;
|
|
}
|
|
|
|
constexpr i128_t make_i128(int64_t hi, uint64_t lo)
|
|
{
|
|
return (i128_t)(((u128_t)((uint64_t)hi) << 64) | (u128_t)lo);
|
|
}
|
|
|
|
} // namespace
|
|
|
|
#endif
|
|
|
|
TEST(Utility, Byteswap)
|
|
{
|
|
constexpr uint8_t u8{127};
|
|
constexpr int8_t i8{-128};
|
|
constexpr uint16_t u16{0x1234};
|
|
constexpr int16_t i16{-0x1234}; // 0xEDCC
|
|
constexpr uint32_t u32{0x12345678};
|
|
constexpr int32_t i32{-0x12345678}; // 0xEDCBA988
|
|
constexpr uint64_t u64{0x123456789ABCDEF0};
|
|
constexpr int64_t i64{-0x123456789ABCDEF0}; // 0xEDCBA98765432110
|
|
|
|
{
|
|
constexpr auto a = m5::stl::byteswap(u8);
|
|
EXPECT_EQ(a, u8);
|
|
constexpr auto b = m5::stl::byteswap(i8);
|
|
EXPECT_EQ(b, i8);
|
|
|
|
EXPECT_EQ(m5::stl::byteswap(a), u8);
|
|
EXPECT_EQ(m5::stl::byteswap(b), i8);
|
|
}
|
|
|
|
{
|
|
constexpr auto a = m5::stl::byteswap(u16);
|
|
EXPECT_EQ(a, 0x3412);
|
|
constexpr auto b = m5::stl::byteswap(i16);
|
|
EXPECT_EQ(b, (int16_t)0xCCED);
|
|
|
|
EXPECT_EQ(m5::stl::byteswap(a), u16);
|
|
EXPECT_EQ(m5::stl::byteswap(b), i16);
|
|
}
|
|
|
|
{
|
|
constexpr auto a = m5::stl::byteswap(u32);
|
|
EXPECT_EQ(a, 0x78563412);
|
|
constexpr auto b = m5::stl::byteswap(i32);
|
|
EXPECT_EQ(b, (int32_t)0x88A9CBED);
|
|
|
|
EXPECT_EQ(m5::stl::byteswap(a), u32);
|
|
EXPECT_EQ(m5::stl::byteswap(b), i32);
|
|
}
|
|
|
|
{
|
|
constexpr auto a = m5::stl::byteswap(u64);
|
|
EXPECT_EQ(a, 0xF0DEBC9A78563412);
|
|
constexpr auto b = m5::stl::byteswap(i64);
|
|
EXPECT_EQ(b, (int64_t)0x1021436587A9CBED);
|
|
|
|
EXPECT_EQ(m5::stl::byteswap(a), u64);
|
|
EXPECT_EQ(m5::stl::byteswap(b), i64);
|
|
}
|
|
|
|
#if defined(__SIZEOF_INT128__)
|
|
constexpr u128_t u128 = make_u128(u64, u64);
|
|
constexpr i128_t i128 = make_i128(i64, (uint64_t)i64);
|
|
|
|
{
|
|
constexpr u128_t expect_u = make_u128(0xF0DEBC9A78563412ULL, 0xF0DEBC9A78563412ULL);
|
|
constexpr i128_t expect_i = (i128_t)make_u128(0x1021436587A9CBEDULL, 0x1021436587A9CBEDULL);
|
|
|
|
constexpr auto a = m5::stl::byteswap(u128);
|
|
EXPECT_EQ(a, expect_u);
|
|
constexpr auto b = m5::stl::byteswap(i128);
|
|
EXPECT_EQ(b, expect_i);
|
|
|
|
EXPECT_EQ(m5::stl::byteswap(a), u128);
|
|
EXPECT_EQ(m5::stl::byteswap(b), i128);
|
|
}
|
|
#endif
|
|
}
|