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#include <library/cpp/dot_product/dot_product_avx2.h>
#include <library/cpp/dot_product/dot_product_simple.h>
#include <library/cpp/dot_product/dot_product_sse.h>
#include <library/cpp/testing/unittest/registar.h>
#include <util/system/cpu_id.h>
#include <util/generic/vector.h>
using TriWayFunc = TTriWayDotProduct<float> (*)
(const float* lhs, const float* rhs, size_t length, bool computeRR) noexcept;
namespace {
void TestTriWay(size_t length, TriWayFunc func) {
const float lhsMultiplier = 0.25f;
const float rhsMultiplier = -0.5f;
TVector<float> lhs(length);
TVector<float> rhs(length);
for (size_t i = 0; i < length; ++i) {
lhs[i] = static_cast<float>(i) * lhsMultiplier;
rhs[i] = static_cast<float>(length - i) * rhsMultiplier;
}
const bool computeRRVariants[] = {false, true};
for (const bool computeRR : computeRRVariants) {
const auto expected = TriWayDotProductSimple(lhs.data(), rhs.data(), length, computeRR);
const auto actual = func(lhs.data(), rhs.data(), length, computeRR);
UNIT_ASSERT_DOUBLES_EQUAL(expected.LL, actual.LL, std::abs(0.00001 * expected.LL));
UNIT_ASSERT_DOUBLES_EQUAL(expected.LR, actual.LR, std::abs(0.00001 * expected.LR));
UNIT_ASSERT_DOUBLES_EQUAL(expected.RR, actual.RR, std::abs(0.00001 * expected.RR));
}
}
} // anonymous namespace
Y_UNIT_TEST_SUITE(TriWayDotProductTest) {
Y_UNIT_TEST(TestTriWayAvx2Maybe) {
// depending on compiler flags and machine it might:
// * test AVX2 version as desired
// * test SSE version
// * test nothing
// but that's fine
if (!NX86::HaveAVX2() || !NX86::HaveFMA()) {
return;
}
for (size_t length = 640; length < 656; ++length) {
TestTriWay(length, TriWayDotProductAvx2);
}
}
Y_UNIT_TEST(TestTriWaySse) {
if (!NX86::HaveSSE2()) {
return;
}
for (size_t length = 640; length < 656; ++length) {
TestTriWay(length, TriWayDotProductSse);
}
}
}
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