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/*
* Copyright (C) 2025 Keita Nonaka <iKonnyaku40@gmail.com>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include <wtf/PreciseSum.h>
#include <array>
namespace TestWebKitAPI {
static constexpr double Infinity = std::numeric_limits<double>::infinity();
static constexpr double NaN = std::numeric_limits<double>::quiet_NaN();
static const std::array<std::pair<std::vector<double>, double>, 38> TEST_CASES = { {
{ { 1, 2, 3 }, 6 },
{ { 1e308 }, 1e308 },
{ { 1e308, -1e308 }, 0 },
{ { 0.1 }, 0.1 },
{ { 0.1, 0.1 }, 0.2 },
{ { 0.1, -0.1 }, 0 },
{ { 1e308, 1e308, 0.1, 0.1, 1e30, 0.1, -1e30, -1e308, -1e308 }, 0.30000000000000004 },
{ { 1e30, 0.1, -1e30 }, 0.1 },
{ { 8.98846567431158e+307, 8.988465674311579e+307, -1.7976931348623157e+308 }, 9.9792015476736e+291 },
{ { -5.630637621603525e+255, 9.565271205476345e+307, 2.9937604643020797e+292 }, 9.565271205476347e+307 },
{ { 6.739986666787661e+66, 2, -1.2689709186578243e-116, 1.7046015739467354e+308, -9.979201547673601e+291, 6.160926733208294e+307, -3.179557053031852e+234, -7.027282978772846e+307, -0.7500000000000001 }, 1.61796594939028e+308 },
{ { 0.31150493246968836, -8.988465674311582e+307, 1.8315037361673755e-270, -15.999999999999996, 2.9999999999999996, 7.345200721499384e+164, -2.033582473639399, -8.98846567431158e+307, -3.5737295155405993e+292, 4.13894772383715e-124, -3.6111186457260667e-35, 2.387234887098013e+180, 7.645295562778372e-298, 3.395189016861822e-103, -2.6331611115768973e-149 }, -Infinity },
{ { -1.1442589134409902e+308, 9.593842098384855e+138, 4.494232837155791e+307, -1.3482698511467367e+308, 4.494232837155792e+307 }, -1.5936821971565685e+308 },
{ { -1.1442589134409902e+308, 4.494232837155791e+307, -1.3482698511467367e+308, 4.494232837155792e+307 }, -1.5936821971565687e+308 },
{ { 9.593842098384855e+138, -6.948356297254111e+307, -1.3482698511467367e+308, 4.494232837155792e+307 }, -1.5936821971565685e+308 },
{ { -2.534858246857893e+115, 8.988465674311579e+307, 8.98846567431158e+307 }, 1.7976931348623157e+308 },
{ { 1.3588124894186193e+308, 1.4803986201152006e+223, 6.741349255733684e+307 }, Infinity },
{ { 6.741349255733684e+307, 1.7976931348623155e+308, -7.388327292663961e+41 }, Infinity },
{ { -1.9807040628566093e+28, 1.7976931348623157e+308, 9.9792015476736e+291 }, 1.7976931348623157e+308 },
{ { -1.0214557991173964e+61, 1.7976931348623157e+308, 8.98846567431158e+307, -8.988465674311579e+307 }, 1.7976931348623157e+308 },
{ { 1.7976931348623157e+308, 7.999999999999999, -1.908963895403937e-230, 1.6445950082320264e+292, 2.0734856707605806e+205 }, Infinity },
{ { 6.197409167220438e-223, -9.979201547673601e+291, -1.7976931348623157e+308 }, -Infinity },
{ { 4.49423283715579e+307, 8.944251746776101e+307, -0.0002441406250000001, 1.1752060710043817e+308, 4.940846717201632e+292, -1.6836699406454528e+308 }, 8.353845887521184e+307 },
{ { 8.988465674311579e+307, 7.999999999999998, 7.029158107234023e-308, -2.2303483759420562e-172, -1.7976931348623157e+308, -8.98846567431158e+307 }, -1.7976931348623157e+308 },
{ { 8.98846567431158e+307, 8.98846567431158e+307 }, Infinity },
{ { NaN }, NaN },
{ { Infinity, -Infinity }, NaN },
{ { -Infinity, Infinity }, NaN },
{ { Infinity }, Infinity },
{ { Infinity, Infinity }, Infinity },
{ { -Infinity }, -Infinity },
{ { -Infinity, -Infinity }, -Infinity },
{ { }, -0 },
{ { 0 }, 0 },
{ { -0 }, -0 },
{ { -0, -0 }, -0 },
{ { -0, 0 }, 0 },
{ { 0, 0 }, 0 },
} };
static void shouldBeEqual(double actual, double expected)
{
if (std::isnan(expected))
EXPECT_TRUE(std::isnan(actual));
else
EXPECT_DOUBLE_EQ(actual, expected);
}
TEST(WTF_PreciseSum, XsumSmall_add)
{
for (const auto& [input, expected] : TEST_CASES) {
PreciseSum<WTF::Xsum::XsumSmall> sum;
for (const auto v : input)
sum.add(v);
shouldBeEqual(sum.compute(), expected);
}
}
TEST(WTF_PreciseSum, XsumSmall_addList)
{
for (const auto& [input, expected] : TEST_CASES) {
PreciseSum<WTF::Xsum::XsumSmall> sum;
sum.addList(input);
shouldBeEqual(sum.compute(), expected);
}
}
TEST(WTF_PreciseSum, XsumLarge_add)
{
for (const auto& [input, expected] : TEST_CASES) {
PreciseSum<WTF::Xsum::XsumLarge> sum;
for (const auto v : input)
sum.add(v);
shouldBeEqual(sum.compute(), expected);
}
}
TEST(WTF_PreciseSum, XsumLarge_addList)
{
for (const auto& [input, expected] : TEST_CASES) {
PreciseSum<WTF::Xsum::XsumLarge> sum;
sum.addList(input);
shouldBeEqual(sum.compute(), expected);
}
}
} // namespace TestWebKitAPI
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