63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
//===- llvm/unittest/Support/xxhashTest.cpp -------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/xxhash.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
|
|
TEST(xxhashTest, Basic) {
|
|
EXPECT_EQ(0xef46db3751d8e999U, xxHash64(StringRef()));
|
|
EXPECT_EQ(0x33bf00a859c4ba3fU, xxHash64("foo"));
|
|
EXPECT_EQ(0x48a37c90ad27a659U, xxHash64("bar"));
|
|
EXPECT_EQ(0x69196c1b3af0bff9U,
|
|
xxHash64("0123456789abcdefghijklmnopqrstuvwxyz"));
|
|
}
|
|
|
|
TEST(xxhashTest, xxh3) {
|
|
constexpr size_t size = 2243;
|
|
uint8_t a[size];
|
|
uint64_t x = 1;
|
|
for (size_t i = 0; i < size; ++i) {
|
|
x ^= x << 13;
|
|
x ^= x >> 7;
|
|
x ^= x << 17;
|
|
a[i] = uint8_t(x);
|
|
}
|
|
|
|
#define F(len, expected) \
|
|
EXPECT_EQ(uint64_t(expected), xxh3_64bits(ArrayRef(a, size_t(len))))
|
|
F(0, 0x2d06800538d394c2);
|
|
F(1, 0xd0d496e05c553485);
|
|
F(2, 0x84d625edb7055eac);
|
|
F(3, 0x6ea2d59aca5c3778);
|
|
F(4, 0xbf65290914e80242);
|
|
F(5, 0xc01fd099ad4fc8e4);
|
|
F(6, 0x9e3ea8187399caa5);
|
|
F(7, 0x9da8b60540644f5a);
|
|
F(8, 0xabc1413da6cd0209);
|
|
F(9, 0x8bc89400bfed51f6);
|
|
F(16, 0x7e46916754d7c9b8);
|
|
F(17, 0xed4be912ba5f836d);
|
|
F(32, 0xf59b59b58c304fd1);
|
|
F(33, 0x9013fb74ca603e0c);
|
|
F(64, 0xfa5271fcce0db1c3);
|
|
F(65, 0x79c42431727f1012);
|
|
F(96, 0x591ee0ddf9c9ccd1);
|
|
F(97, 0x8ffc6a3111fe19da);
|
|
F(128, 0x06a146ee9a2da378);
|
|
F(129, 0xbc7138129bf065da);
|
|
F(403, 0xcefeb3ffa532ad8c);
|
|
F(512, 0xcdfa6b6268e3650f);
|
|
F(513, 0x4bb5d42742f9765f);
|
|
F(2048, 0x330ce110cbb79eae);
|
|
F(2049, 0x3ba6afa0249fef9a);
|
|
F(2240, 0xd61d4d2a94e926a8);
|
|
F(2243, 0x0979f786a24edde7);
|
|
#undef F
|
|
}
|