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AK: Add support for Little/BigEndian<UFixedBigInteger<M>>

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Ali Mohammad Pur 2023-06-12 13:37:50 +03:30 • committed by Ali Mohammad Pur
parent 94f5389934
commit 4f0f1c7c72
2 changed files with 85 additions and 0 deletions
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12
Tests/AK/TestUFixedBigInt.cpp
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@ -185,3 +185,15 @@ TEST_CASE(mod_hardcoded)
EXPECT_EQ(u256(u128 { 0x7f13e232d82a24c6ULL, 0x23d41447dd7f5bc6ULL }, u128 { 0xd89a3ed8b30527caULL, 0xa98ef2cc01e83685ULL }) % u256(u128 { 0x8d4f5b1983fc1f0eULL, 0xf54102ece15fb0faULL }, u128 { 0x17b8aec68556a16dULL, 0x4e1e5bea70cb9398ULL }), u256(u128 { 0x64752bffd031e6aaULL, 0x39520e6e1abff9d1ULL }, u128 { 0xa928e14ba857e4eeULL, 0x0d523af720510f55ULL }));
EXPECT_EQ(u256(u128 { 0x49750d7f39d61607ULL, 0x58bdef1c3e00d18eULL }, u128 { 0xa651479cd1fd1933ULL, 0xd1834bc3d654b633ULL }) % u256(u128 { 0x1bda34f5ec68ef3bULL, 0x12c65ce5363a7616ULL }, u128 { 0x5a79c4d85da0071aULL, 0xffa6b6284559d1aaULL }), u256(u128 { 0x49750d7f39d61607ULL, 0x58bdef1c3e00d18eULL }, u128 { 0xa651479cd1fd1933ULL, 0xd1834bc3d654b633ULL }));
}
TEST_CASE(endian_swap)
{
constexpr u128 const a { 0x1234567890abcdefULL, 0xfedcba0987654321ULL };
constexpr u128 const a_swapped { 0x2143658709badcfeull, 0xefcdab9078563412ull };
static_assert(!AK::HostIsLittleEndian || bit_cast<u128>(BigEndian { a }) == a_swapped);
static_assert(AK::HostIsLittleEndian || bit_cast<u128>(LittleEndian { a }) == a_swapped);
static_assert(!AK::HostIsLittleEndian || bit_cast<u128>(LittleEndian { a }) == a);
static_assert(AK::HostIsLittleEndian || bit_cast<u128>(BigEndian { a }) == a);
}