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int128_t -> int128_opt

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This commit is contained in:
Victor Zverovich
2022-02-17 19:05:25 -08:00
parent 532a69a639
commit 15c2a3bacc
5 changed files with 86 additions and 78 deletions
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27
test/format-test.cc
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@@ -39,6 +39,33 @@ using testing::StrictMock;
enum { buffer_size = 256 };
TEST(uint128_test, ctor) {
using fmt::detail::uint128_t;
auto n = uint128_t();
EXPECT_EQ(n, 0);
n = uint128_t(42);
EXPECT_EQ(n, 42);
EXPECT_EQ(static_cast<uint64_t>(n), 42);
}
TEST(uint128_test, shift) {
auto n = fmt::detail::uint128_t(42);
n = n << 64;
EXPECT_EQ(static_cast<uint64_t>(n), 0);
n = n >> 64;
EXPECT_EQ(static_cast<uint64_t>(n), 42);
n = n << 62;
EXPECT_EQ(static_cast<uint64_t>(n >> 64), 0xa);
EXPECT_EQ(static_cast<uint64_t>(n), 0x8000000000000000);
n = n >> 62;
EXPECT_EQ(static_cast<uint64_t>(n), 42);
}
TEST(uint128_test, minus) {
auto n = fmt::detail::uint128_t(42);
EXPECT_EQ(n - 2, 40);
}
struct uint32_pair {
uint32_t u[2];
};