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perf(hex8): use MKL Hessian products and exact zero pair addition

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This commit is contained in:
KOKO\Mimi
2026-10-14 16:49:15 +09:00
parent dec6eb3199
commit e18271051c
4 changed files with 116 additions and 34 deletions
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tests/unit/elements/hex8_high_low_test.cpp
+7
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@@ -31,6 +31,11 @@ void ExpectOriginalProduct(HighLow left, HighLow right) {
{left.high, left.low}, {right.high, right.low});
EXPECT_EQ(PairBits(actual.high), PairBits(expected.high));
EXPECT_EQ(PairBits(actual.low), PairBits(expected.low));
const auto actual_sum = fesa::hex8_internal::AddPair(left, right);
const auto expected_sum = fesa::high_low_original::Add(
{left.high, left.low}, {right.high, right.low});
EXPECT_EQ(PairBits(actual_sum.high), PairBits(expected_sum.high));
EXPECT_EQ(PairBits(actual_sum.low), PairBits(expected_sum.low));
}
TEST(Hex8HighLow, ScalarCrossProductShortcutMatchesOriginalBits) {
@@ -65,6 +70,8 @@ TEST(Hex8HighLow, ScalarCrossProductShortcutMatchesOriginalBits) {
std::memcpy(&left, &left_bits, sizeof(left));
std::memcpy(&right, &right_bits, sizeof(right));
const auto pair = fesa::math_internal::TwoSum(left, right);
ExpectOriginalProduct(pair, HighLow{});
ExpectOriginalProduct(HighLow{}, pair);
ExpectOriginalProduct(pair, HighLow{right});
ExpectOriginalProduct(HighLow{right}, pair);
ExpectOriginalProduct(pair, pair);