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Add countl_zero function

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Signed-off-by: Vladislav Shchapov <vladislav@shchapov.ru>
This commit is contained in:
Vladislav Shchapov
2022-11-30 22:32:32 +05:00
committed by Victor Zverovich
parent 8d50d814db
commit d24be2e95c
2 changed files with 21 additions and 1 deletions
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test/format-impl-test.cc
+10
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@@ -353,6 +353,16 @@ TEST(format_impl_test, count_digits) {
test_count_digits<uint64_t>();
}
TEST(format_impl_test, countl_zero) {
constexpr auto num_bits = fmt::detail::num_bits<uint32_t>();
uint32_t n = 1u;
for (int i = 1; i < num_bits - 1; i++) {
n <<= 1;
EXPECT_EQ(fmt::detail::countl_zero(n - 1), num_bits - i);
EXPECT_EQ(fmt::detail::countl_zero(n), num_bits - i - 1);
}
}
#if FMT_USE_FLOAT128
TEST(format_impl_test, write_float128) {
auto s = std::string();