| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/utils.h" |
| #include "platform/assert.h" |
| #include "platform/globals.h" |
| #include "vm/unit_test.h" |
| |
| namespace dart { |
| |
| VM_UNIT_TEST_CASE(StringHash) { |
| auto hash_created_string = [](intptr_t length, |
| intptr_t misalignment) -> uint32_t { |
| const intptr_t capacity = length + misalignment + kInt32Size; |
| char* str = new char[capacity]; |
| const intptr_t alloc_misalignment = |
| reinterpret_cast<intptr_t>(str) % kInt32Size; |
| const intptr_t first_aligned_position = |
| alloc_misalignment > 0 ? kInt32Size - alloc_misalignment : 0; |
| const intptr_t start = first_aligned_position + misalignment; |
| for (intptr_t n = 0; n < start; n++) { |
| str[n] = 0xFF; |
| } |
| for (intptr_t n = 0; n < length; n++) { |
| // Fill the important string positions with uppercase letters. |
| str[start + n] = 0x40 + (n % 26); |
| } |
| for (intptr_t n = start + length; n < capacity; n++) { |
| str[n] = 0xFF; |
| } |
| const uint32_t hash = Utils::StringHash(str + start, length); |
| delete[] str; |
| return hash; |
| }; |
| |
| const intptr_t kMaxLength = 100; |
| ASSERT(kMaxLength >= kInt64Size); |
| uint32_t last_hash = hash_created_string(0, 0); |
| bool identical_hashes = true; |
| // Check the same string at different (mis)alignments has the same hash. |
| for (intptr_t len = 0; len < kMaxLength; len++) { |
| const uint32_t hash = hash_created_string(len, 0); |
| for (intptr_t misalignment = 1; misalignment < kInt64Size; misalignment++) { |
| EXPECT_EQ(hash, hash_created_string(len, misalignment)); |
| } |
| if (hash != last_hash) { |
| identical_hashes = false; |
| } |
| last_hash = hash; |
| } |
| // Make sure at least some of the hashes were different from each other. |
| EXPECT(!identical_hashes); |
| } |
| |
| VM_UNIT_TEST_CASE(Minimum) { |
| EXPECT_EQ(0, Utils::Minimum(0, 1)); |
| EXPECT_EQ(0, Utils::Minimum(1, 0)); |
| |
| EXPECT_EQ(1, Utils::Minimum(1, 2)); |
| EXPECT_EQ(1, Utils::Minimum(2, 1)); |
| |
| EXPECT_EQ(-1, Utils::Minimum(-1, 1)); |
| EXPECT_EQ(-1, Utils::Minimum(1, -1)); |
| |
| EXPECT_EQ(-2, Utils::Minimum(-1, -2)); |
| EXPECT_EQ(-2, Utils::Minimum(-2, -1)); |
| } |
| |
| VM_UNIT_TEST_CASE(Maximum) { |
| EXPECT_EQ(1, Utils::Maximum(0, 1)); |
| EXPECT_EQ(1, Utils::Maximum(1, 0)); |
| |
| EXPECT_EQ(2, Utils::Maximum(1, 2)); |
| EXPECT_EQ(2, Utils::Maximum(2, 1)); |
| |
| EXPECT_EQ(1, Utils::Maximum(-1, 1)); |
| EXPECT_EQ(1, Utils::Maximum(1, -1)); |
| |
| EXPECT_EQ(-1, Utils::Maximum(-1, -2)); |
| EXPECT_EQ(-1, Utils::Maximum(-2, -1)); |
| } |
| |
| VM_UNIT_TEST_CASE(IsPowerOfTwo) { |
| EXPECT(!Utils::IsPowerOfTwo(0)); |
| EXPECT(Utils::IsPowerOfTwo(1)); |
| EXPECT(Utils::IsPowerOfTwo(2)); |
| EXPECT(!Utils::IsPowerOfTwo(3)); |
| EXPECT(Utils::IsPowerOfTwo(4)); |
| EXPECT(Utils::IsPowerOfTwo(256)); |
| |
| EXPECT(!Utils::IsPowerOfTwo(-1)); |
| EXPECT(!Utils::IsPowerOfTwo(-2)); |
| } |
| |
| VM_UNIT_TEST_CASE(ShiftForPowerOfTwo) { |
| EXPECT_EQ(1, Utils::ShiftForPowerOfTwo(2)); |
| EXPECT_EQ(2, Utils::ShiftForPowerOfTwo(4)); |
| EXPECT_EQ(8, Utils::ShiftForPowerOfTwo(256)); |
| } |
| |
| VM_UNIT_TEST_CASE(IsAligned) { |
| EXPECT(Utils::IsAligned(0, 1)); |
| EXPECT(Utils::IsAligned(1, 1)); |
| |
| EXPECT(Utils::IsAligned(0, 2)); |
| EXPECT(!Utils::IsAligned(1, 2)); |
| EXPECT(Utils::IsAligned(2, 2)); |
| |
| EXPECT(Utils::IsAligned(32, 8)); |
| EXPECT(!Utils::IsAligned(33, 8)); |
| EXPECT(Utils::IsAligned(40, 8)); |
| } |
| |
| VM_UNIT_TEST_CASE(RoundDown) { |
| EXPECT_EQ(0, Utils::RoundDown(22, 32)); |
| EXPECT_EQ(32, Utils::RoundDown(33, 32)); |
| EXPECT_EQ(32, Utils::RoundDown(63, 32)); |
| uword* address = reinterpret_cast<uword*>(63); |
| uword* rounddown_address = reinterpret_cast<uword*>(32); |
| EXPECT_EQ(rounddown_address, Utils::RoundDown(address, 32)); |
| } |
| |
| VM_UNIT_TEST_CASE(RoundUp) { |
| EXPECT_EQ(32, Utils::RoundUp(22, 32)); |
| EXPECT_EQ(64, Utils::RoundUp(33, 32)); |
| EXPECT_EQ(64, Utils::RoundUp(63, 32)); |
| uword* address = reinterpret_cast<uword*>(63); |
| uword* roundup_address = reinterpret_cast<uword*>(64); |
| EXPECT_EQ(roundup_address, Utils::RoundUp(address, 32)); |
| } |
| |
| VM_UNIT_TEST_CASE(RoundUpToPowerOfTwo) { |
| EXPECT_EQ(0U, Utils::RoundUpToPowerOfTwo(0)); |
| EXPECT_EQ(1U, Utils::RoundUpToPowerOfTwo(1)); |
| EXPECT_EQ(2U, Utils::RoundUpToPowerOfTwo(2)); |
| EXPECT_EQ(4U, Utils::RoundUpToPowerOfTwo(3)); |
| EXPECT_EQ(4U, Utils::RoundUpToPowerOfTwo(4)); |
| EXPECT_EQ(8U, Utils::RoundUpToPowerOfTwo(5)); |
| EXPECT_EQ(8U, Utils::RoundUpToPowerOfTwo(7)); |
| EXPECT_EQ(16U, Utils::RoundUpToPowerOfTwo(9)); |
| EXPECT_EQ(16U, Utils::RoundUpToPowerOfTwo(16)); |
| EXPECT_EQ(0x10000000U, Utils::RoundUpToPowerOfTwo(0x08765432)); |
| } |
| |
| VM_UNIT_TEST_CASE(CountOneBits32) { |
| EXPECT_EQ(0, Utils::CountOneBits32(0)); |
| EXPECT_EQ(1, Utils::CountOneBits32(0x00000010)); |
| EXPECT_EQ(1, Utils::CountOneBits32(0x00010000)); |
| EXPECT_EQ(1, Utils::CountOneBits32(0x10000000)); |
| EXPECT_EQ(4, Utils::CountOneBits32(0x10101010)); |
| EXPECT_EQ(8, Utils::CountOneBits32(0x03030303)); |
| EXPECT_EQ(32, Utils::CountOneBits32(0xFFFFFFFF)); |
| } |
| |
| VM_UNIT_TEST_CASE(CountOneBits64) { |
| EXPECT_EQ(0, Utils::CountOneBits64(DART_UINT64_C(0))); |
| EXPECT_EQ(1, Utils::CountOneBits64(DART_UINT64_C(0x00000010))); |
| EXPECT_EQ(1, Utils::CountOneBits64(DART_UINT64_C(0x00010000))); |
| EXPECT_EQ(1, Utils::CountOneBits64(DART_UINT64_C(0x10000000))); |
| EXPECT_EQ(4, Utils::CountOneBits64(DART_UINT64_C(0x10101010))); |
| EXPECT_EQ(8, Utils::CountOneBits64(DART_UINT64_C(0x03030303))); |
| EXPECT_EQ(32, Utils::CountOneBits64(DART_UINT64_C(0xFFFFFFFF))); |
| EXPECT_EQ(2, Utils::CountOneBits64(DART_UINT64_C(0x0000001000000010))); |
| EXPECT_EQ(2, Utils::CountOneBits64(DART_UINT64_C(0x0001000000010000))); |
| EXPECT_EQ(2, Utils::CountOneBits64(DART_UINT64_C(0x1000000010000000))); |
| EXPECT_EQ(8, Utils::CountOneBits64(DART_UINT64_C(0x1010101010101010))); |
| EXPECT_EQ(16, Utils::CountOneBits64(DART_UINT64_C(0x0303030303030303))); |
| EXPECT_EQ(64, Utils::CountOneBits64(DART_UINT64_C(0xFFFFFFFFFFFFFFFF))); |
| } |
| |
| VM_UNIT_TEST_CASE(CountOneBitsWord) { |
| EXPECT_EQ(0, Utils::CountOneBitsWord(0)); |
| EXPECT_EQ(1, Utils::CountOneBitsWord(0x00000010)); |
| EXPECT_EQ(1, Utils::CountOneBitsWord(0x00010000)); |
| EXPECT_EQ(1, Utils::CountOneBitsWord(0x10000000)); |
| EXPECT_EQ(4, Utils::CountOneBitsWord(0x10101010)); |
| EXPECT_EQ(8, Utils::CountOneBitsWord(0x03030303)); |
| EXPECT_EQ(32, Utils::CountOneBitsWord(0xFFFFFFFF)); |
| #if defined(ARCH_IS_64_BIT) |
| EXPECT_EQ(2, Utils::CountOneBitsWord(0x0000001000000010)); |
| EXPECT_EQ(2, Utils::CountOneBitsWord(0x0001000000010000)); |
| EXPECT_EQ(2, Utils::CountOneBitsWord(0x1000000010000000)); |
| EXPECT_EQ(8, Utils::CountOneBitsWord(0x1010101010101010)); |
| EXPECT_EQ(16, Utils::CountOneBitsWord(0x0303030303030303)); |
| EXPECT_EQ(64, Utils::CountOneBitsWord(0xFFFFFFFFFFFFFFFF)); |
| #endif |
| } |
| |
| VM_UNIT_TEST_CASE(CountTrailingZeros32) { |
| EXPECT_EQ(0, Utils::CountTrailingZeros32(0x1)); |
| EXPECT_EQ(1, Utils::CountTrailingZeros32(0x2)); |
| EXPECT_EQ(4, Utils::CountTrailingZeros32(0x0f0f0)); |
| EXPECT_EQ(31, Utils::CountTrailingZeros32(0x80000000)); |
| EXPECT_EQ(32, Utils::CountTrailingZeros32(0x0)); |
| } |
| |
| VM_UNIT_TEST_CASE(CountTrailingZeros64) { |
| EXPECT_EQ(0, Utils::CountTrailingZeros64(0x1)); |
| EXPECT_EQ(1, Utils::CountTrailingZeros64(0x2)); |
| EXPECT_EQ(4, Utils::CountTrailingZeros64(0x0f0f0)); |
| EXPECT_EQ(63, Utils::CountTrailingZeros64(0x8000000000000000LLU)); |
| EXPECT_EQ(64, Utils::CountTrailingZeros64(0x0)); |
| } |
| |
| VM_UNIT_TEST_CASE(CountLeadingZeros32) { |
| EXPECT_EQ(32, Utils::CountLeadingZeros32(0x0)); |
| EXPECT_EQ(31, Utils::CountLeadingZeros32(0x1)); |
| EXPECT_EQ(4, Utils::CountLeadingZeros32(0x0F0F0000)); |
| EXPECT_EQ(1, Utils::CountLeadingZeros32(0x7FFFFFFF)); |
| EXPECT_EQ(0, Utils::CountLeadingZeros32(0xFFFFFFFF)); |
| } |
| |
| VM_UNIT_TEST_CASE(CountLeadingZeros64) { |
| EXPECT_EQ(64, Utils::CountLeadingZeros64(0x0)); |
| EXPECT_EQ(63, Utils::CountLeadingZeros64(0x1)); |
| EXPECT_EQ(4, Utils::CountLeadingZeros64(0x0F0F000000000000LLU)); |
| EXPECT_EQ(1, Utils::CountLeadingZeros64(0x7FFFFFFFFFFFFFFFLLU)); |
| EXPECT_EQ(0, Utils::CountLeadingZeros64(0xFFFFFFFFFFFFFFFFLLU)); |
| } |
| |
| VM_UNIT_TEST_CASE(CountZerosWord) { |
| EXPECT_EQ(kBitsPerWord, Utils::CountTrailingZerosWord(0x0)); |
| EXPECT_EQ(kBitsPerWord, Utils::CountLeadingZerosWord(0x0)); |
| EXPECT_EQ(0, Utils::CountTrailingZerosWord(0x1)); |
| EXPECT_EQ(kBitsPerWord - 1, Utils::CountLeadingZerosWord(0x1)); |
| EXPECT_EQ(1, Utils::CountTrailingZerosWord(0x2)); |
| EXPECT_EQ(kBitsPerWord - 2, Utils::CountLeadingZerosWord(0x2)); |
| EXPECT_EQ(0, Utils::CountTrailingZerosWord(0x3)); |
| EXPECT_EQ(kBitsPerWord - 2, Utils::CountLeadingZerosWord(0x3)); |
| EXPECT_EQ(2, Utils::CountTrailingZerosWord(0x4)); |
| EXPECT_EQ(kBitsPerWord - 3, Utils::CountLeadingZerosWord(0x4)); |
| EXPECT_EQ(0, Utils::CountTrailingZerosWord(kUwordMax)); |
| EXPECT_EQ(0, Utils::CountLeadingZerosWord(kUwordMax)); |
| static const uword kTopBit = static_cast<uword>(1) << (kBitsPerWord - 1); |
| EXPECT_EQ(kBitsPerWord - 1, Utils::CountTrailingZerosWord(kTopBit)); |
| EXPECT_EQ(0, Utils::CountLeadingZerosWord(kTopBit)); |
| } |
| |
| VM_UNIT_TEST_CASE(ReverseBits32) { |
| EXPECT_EQ(0xffffffffU, Utils::ReverseBits32(0xffffffffU)); |
| EXPECT_EQ(0xf0000000U, Utils::ReverseBits32(0x0000000fU)); |
| EXPECT_EQ(0x00000001U, Utils::ReverseBits32(0x80000000U)); |
| EXPECT_EQ(0x22222222U, Utils::ReverseBits32(0x44444444U)); |
| EXPECT_EQ(0x1E6A2C48U, Utils::ReverseBits32(0x12345678U)); |
| } |
| |
| VM_UNIT_TEST_CASE(ReverseBits64) { |
| EXPECT_EQ(0xffffffffffffffffLLU, Utils::ReverseBits64(0xffffffffffffffffLLU)); |
| EXPECT_EQ(0xf000000000000000LLU, Utils::ReverseBits64(0x000000000000000fLLU)); |
| EXPECT_EQ(0x0000000000000001LLU, Utils::ReverseBits64(0x8000000000000000LLU)); |
| EXPECT_EQ(0x2222222222222222LLU, Utils::ReverseBits64(0x4444444444444444LLU)); |
| EXPECT_EQ(0x8f7b3d591e6a2c48LLU, Utils::ReverseBits64(0x123456789abcdef1LLU)); |
| } |
| |
| VM_UNIT_TEST_CASE(ReverseBitsWord) { |
| const uword kOne = static_cast<uword>(1); |
| const uword kTopBit = kOne << (kBitsPerWord - 1); |
| EXPECT_EQ(kTopBit, Utils::ReverseBitsWord(kOne)); |
| EXPECT_EQ(kOne, Utils::ReverseBitsWord(kTopBit)); |
| } |
| |
| VM_UNIT_TEST_CASE(IsInt) { |
| EXPECT(Utils::IsInt(8, 16)); |
| EXPECT(Utils::IsInt(8, 127)); |
| EXPECT(Utils::IsInt(8, -128)); |
| EXPECT(!Utils::IsInt(8, 255)); |
| EXPECT(Utils::IsInt(16, 16)); |
| EXPECT(!Utils::IsInt(16, 65535)); |
| EXPECT(Utils::IsInt(16, 32767)); |
| EXPECT(Utils::IsInt(16, -32768)); |
| EXPECT(Utils::IsInt(32, 16LL)); |
| EXPECT(Utils::IsInt(32, 2147483647LL)); |
| EXPECT(Utils::IsInt(32, -2147483648LL)); |
| EXPECT(!Utils::IsInt(32, 4294967295LL)); |
| } |
| |
| VM_UNIT_TEST_CASE(IsUint) { |
| EXPECT(Utils::IsUint(8, 16)); |
| EXPECT(Utils::IsUint(8, 0)); |
| EXPECT(Utils::IsUint(8, 255)); |
| EXPECT(!Utils::IsUint(8, 256)); |
| EXPECT(Utils::IsUint(16, 16)); |
| EXPECT(Utils::IsUint(16, 0)); |
| EXPECT(Utils::IsUint(16, 65535)); |
| EXPECT(!Utils::IsUint(16, 65536)); |
| EXPECT(Utils::IsUint(32, 16LL)); |
| EXPECT(Utils::IsUint(32, 0LL)); |
| EXPECT(Utils::IsUint(32, 4294967295LL)); |
| EXPECT(!Utils::IsUint(32, 4294967296LL)); |
| } |
| |
| VM_UNIT_TEST_CASE(MagnitudeIsUint) { |
| EXPECT(Utils::MagnitudeIsUint(8, 16)); |
| EXPECT(Utils::MagnitudeIsUint(8, 0)); |
| EXPECT(Utils::MagnitudeIsUint(8, -128)); |
| EXPECT(Utils::MagnitudeIsUint(8, 255)); |
| EXPECT(!Utils::MagnitudeIsUint(8, 256)); |
| EXPECT(Utils::MagnitudeIsUint(12, 4095)); |
| EXPECT(Utils::MagnitudeIsUint(12, -4095)); |
| EXPECT(!Utils::MagnitudeIsUint(12, 4096)); |
| EXPECT(!Utils::MagnitudeIsUint(12, -4096)); |
| EXPECT(Utils::MagnitudeIsUint(16, 16)); |
| EXPECT(Utils::MagnitudeIsUint(16, 0)); |
| EXPECT(Utils::MagnitudeIsUint(16, 65535)); |
| EXPECT(Utils::MagnitudeIsUint(16, -32768)); |
| EXPECT(!Utils::MagnitudeIsUint(16, 65536)); |
| EXPECT(Utils::MagnitudeIsUint(32, 16LL)); |
| EXPECT(Utils::MagnitudeIsUint(32, 0LL)); |
| EXPECT(Utils::MagnitudeIsUint(32, -2147483648LL)); |
| EXPECT(Utils::MagnitudeIsUint(32, 4294967295LL)); |
| EXPECT(!Utils::MagnitudeIsUint(32, 4294967296LL)); |
| } |
| |
| VM_UNIT_TEST_CASE(LowBits) { |
| EXPECT_EQ(0xff00, Utils::Low16Bits(0xffff00)); |
| EXPECT_EQ(0xff, Utils::High16Bits(0xffff00)); |
| EXPECT_EQ(0xff00, Utils::Low32Bits(0xff0000ff00LL)); |
| EXPECT_EQ(0xff, Utils::High32Bits(0xff0000ff00LL)); |
| EXPECT_EQ(0x00ff0000ff00LL, Utils::LowHighTo64Bits(0xff00, 0x00ff)); |
| } |
| |
| VM_UNIT_TEST_CASE(Endianity) { |
| uint16_t value16be = Utils::HostToBigEndian16(0xf1); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value16be)[0]); |
| EXPECT_EQ(0xf1, reinterpret_cast<uint8_t*>(&value16be)[1]); |
| |
| uint16_t value16le = Utils::HostToLittleEndian16(0xf1); |
| EXPECT_EQ(0xf1, reinterpret_cast<uint8_t*>(&value16le)[0]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value16le)[1]); |
| |
| uint32_t value32be = Utils::HostToBigEndian32(0xf1f2); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value32be)[0]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value32be)[1]); |
| EXPECT_EQ(0xf1, reinterpret_cast<uint8_t*>(&value32be)[2]); |
| EXPECT_EQ(0xf2, reinterpret_cast<uint8_t*>(&value32be)[3]); |
| EXPECT_EQ(0xf1f2u, Utils::BigEndianToHost32(value32be)); |
| |
| uint32_t value32le = Utils::HostToLittleEndian32(0xf1f2); |
| EXPECT_EQ(0xf2, reinterpret_cast<uint8_t*>(&value32le)[0]); |
| EXPECT_EQ(0xf1, reinterpret_cast<uint8_t*>(&value32le)[1]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value32le)[2]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value32le)[3]); |
| |
| uint64_t value64be = Utils::HostToBigEndian64(0xf1f2f3f4); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64be)[0]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64be)[1]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64be)[2]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64be)[3]); |
| EXPECT_EQ(0xf1, reinterpret_cast<uint8_t*>(&value64be)[4]); |
| EXPECT_EQ(0xf2, reinterpret_cast<uint8_t*>(&value64be)[5]); |
| EXPECT_EQ(0xf3, reinterpret_cast<uint8_t*>(&value64be)[6]); |
| EXPECT_EQ(0xf4, reinterpret_cast<uint8_t*>(&value64be)[7]); |
| |
| uint64_t value64le = Utils::HostToLittleEndian64(0xf1f2f3f4); |
| EXPECT_EQ(0xf4, reinterpret_cast<uint8_t*>(&value64le)[0]); |
| EXPECT_EQ(0xf3, reinterpret_cast<uint8_t*>(&value64le)[1]); |
| EXPECT_EQ(0xf2, reinterpret_cast<uint8_t*>(&value64le)[2]); |
| EXPECT_EQ(0xf1, reinterpret_cast<uint8_t*>(&value64le)[3]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64le)[4]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64le)[5]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64le)[6]); |
| EXPECT_EQ(0x0, reinterpret_cast<uint8_t*>(&value64le)[7]); |
| EXPECT_EQ(0xf1f2f3f4ul, Utils::LittleEndianToHost64(value64le)); |
| } |
| |
| VM_UNIT_TEST_CASE(DoublesBitEqual) { |
| EXPECT(Utils::DoublesBitEqual(1.0, 1.0)); |
| EXPECT(!Utils::DoublesBitEqual(1.0, -1.0)); |
| EXPECT(Utils::DoublesBitEqual(0.0, 0.0)); |
| EXPECT(!Utils::DoublesBitEqual(0.0, -0.0)); |
| EXPECT(Utils::DoublesBitEqual(NAN, NAN)); |
| } |
| |
| VM_UNIT_TEST_CASE(NBitMask) { |
| #if defined(ARCH_IS_64_BIT) |
| EXPECT_EQ(0ull, Utils::NBitMask(0)); |
| EXPECT_EQ(0x1ull, Utils::NBitMask(1)); |
| EXPECT_EQ(0x3ull, Utils::NBitMask(2)); |
| EXPECT_EQ(0xfull, Utils::NBitMask(4)); |
| EXPECT_EQ(0xffull, Utils::NBitMask(8)); |
| EXPECT_EQ(0xffffull, Utils::NBitMask(16)); |
| EXPECT_EQ(0x1ffffull, Utils::NBitMask(17)); |
| EXPECT_EQ(0x7fffffffull, Utils::NBitMask(31)); |
| EXPECT_EQ(0xffffffffull, Utils::NBitMask(32)); |
| EXPECT_EQ(0x1ffffffffull, Utils::NBitMask(33)); |
| EXPECT_EQ(0x7fffffffffffffffull, Utils::NBitMask(kBitsPerWord - 1)); |
| EXPECT_EQ(0xffffffffffffffffull, Utils::NBitMask(kBitsPerWord)); |
| #else |
| EXPECT_EQ(0u, Utils::NBitMask(0)); |
| EXPECT_EQ(0x1u, Utils::NBitMask(1)); |
| EXPECT_EQ(0x3u, Utils::NBitMask(2)); |
| EXPECT_EQ(0xfu, Utils::NBitMask(4)); |
| EXPECT_EQ(0xffu, Utils::NBitMask(8)); |
| EXPECT_EQ(0xffffu, Utils::NBitMask(16)); |
| EXPECT_EQ(0x1ffffu, Utils::NBitMask(17)); |
| EXPECT_EQ(0x7fffffffu, Utils::NBitMask(kBitsPerWord - 1)); |
| EXPECT_EQ(0xffffffffu, Utils::NBitMask(kBitsPerWord)); |
| #endif |
| } |
| |
| } // namespace dart |
