Media CAS Proxy SDK release: 16.5.0

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2021-07-12 21:46:29 +00:00
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commit d69222d492
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# Copyright 2018 The Abseil Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
load(
"//absl:copts/configure_copts.bzl",
"ABSL_DEFAULT_COPTS",
"ABSL_DEFAULT_LINKOPTS",
"ABSL_TEST_COPTS",
)
package(default_visibility = ["//visibility:public"])
licenses(["notice"]) # Apache 2.0
cc_library(
name = "int128",
srcs = [
"int128.cc",
"int128_have_intrinsic.inc",
"int128_no_intrinsic.inc",
],
hdrs = ["int128.h"],
copts = ABSL_DEFAULT_COPTS,
linkopts = ABSL_DEFAULT_LINKOPTS,
deps = [
"//absl/base:config",
"//absl/base:core_headers",
],
)
cc_test(
name = "int128_test",
size = "small",
srcs = [
"int128_stream_test.cc",
"int128_test.cc",
],
copts = ABSL_TEST_COPTS,
linkopts = ABSL_DEFAULT_LINKOPTS,
deps = [
":int128",
"//absl/base",
"//absl/base:core_headers",
"//absl/hash:hash_testing",
"//absl/meta:type_traits",
"@com_google_googletest//:gtest_main",
],
)
cc_test(
name = "int128_benchmark",
srcs = ["int128_benchmark.cc"],
copts = ABSL_TEST_COPTS,
linkopts = ABSL_DEFAULT_LINKOPTS,
tags = ["benchmark"],
deps = [
":int128",
"//absl/base:config",
"@com_github_google_benchmark//:benchmark_main",
],
)

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#
# Copyright 2017 The Abseil Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
absl_cc_library(
NAME
int128
HDRS
"int128.h"
SRCS
"int128.cc"
"int128_have_intrinsic.inc"
"int128_no_intrinsic.inc"
COPTS
${ABSL_DEFAULT_COPTS}
DEPS
absl::config
absl::core_headers
PUBLIC
)
absl_cc_test(
NAME
int128_test
SRCS
"int128_stream_test.cc"
"int128_test.cc"
COPTS
${ABSL_TEST_COPTS}
DEPS
absl::int128
absl::base
absl::core_headers
absl::hash_testing
absl::type_traits
gmock_main
)
# component target
absl_cc_library(
NAME
numeric
COPTS
${ABSL_DEFAULT_COPTS}
DEPS
absl::int128
PUBLIC
)

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// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/numeric/int128.h"
#include <stddef.h>
#include <cassert>
#include <iomanip>
#include <ostream> // NOLINT(readability/streams)
#include <sstream>
#include <string>
#include <type_traits>
namespace absl {
inline namespace lts_2019_08_08 {
const uint128 kuint128max = MakeUint128(std::numeric_limits<uint64_t>::max(),
std::numeric_limits<uint64_t>::max());
namespace {
// Returns the 0-based position of the last set bit (i.e., most significant bit)
// in the given uint64_t. The argument may not be 0.
//
// For example:
// Given: 5 (decimal) == 101 (binary)
// Returns: 2
#define STEP(T, n, pos, sh) \
do { \
if ((n) >= (static_cast<T>(1) << (sh))) { \
(n) = (n) >> (sh); \
(pos) |= (sh); \
} \
} while (0)
static inline int Fls64(uint64_t n) {
assert(n != 0);
int pos = 0;
STEP(uint64_t, n, pos, 0x20);
uint32_t n32 = static_cast<uint32_t>(n);
STEP(uint32_t, n32, pos, 0x10);
STEP(uint32_t, n32, pos, 0x08);
STEP(uint32_t, n32, pos, 0x04);
return pos + ((uint64_t{0x3333333322221100} >> (n32 << 2)) & 0x3);
}
#undef STEP
// Like Fls64() above, but returns the 0-based position of the last set bit
// (i.e., most significant bit) in the given uint128. The argument may not be 0.
static inline int Fls128(uint128 n) {
if (uint64_t hi = Uint128High64(n)) {
return Fls64(hi) + 64;
}
return Fls64(Uint128Low64(n));
}
// Long division/modulo for uint128 implemented using the shift-subtract
// division algorithm adapted from:
// https://stackoverflow.com/questions/5386377/division-without-using
void DivModImpl(uint128 dividend, uint128 divisor, uint128* quotient_ret,
uint128* remainder_ret) {
assert(divisor != 0);
if (divisor > dividend) {
*quotient_ret = 0;
*remainder_ret = dividend;
return;
}
if (divisor == dividend) {
*quotient_ret = 1;
*remainder_ret = 0;
return;
}
uint128 denominator = divisor;
uint128 quotient = 0;
// Left aligns the MSB of the denominator and the dividend.
const int shift = Fls128(dividend) - Fls128(denominator);
denominator <<= shift;
// Uses shift-subtract algorithm to divide dividend by denominator. The
// remainder will be left in dividend.
for (int i = 0; i <= shift; ++i) {
quotient <<= 1;
if (dividend >= denominator) {
dividend -= denominator;
quotient |= 1;
}
denominator >>= 1;
}
*quotient_ret = quotient;
*remainder_ret = dividend;
}
template <typename T>
uint128 MakeUint128FromFloat(T v) {
static_assert(std::is_floating_point<T>::value, "");
// Rounding behavior is towards zero, same as for built-in types.
// Undefined behavior if v is NaN or cannot fit into uint128.
assert(std::isfinite(v) && v > -1 &&
(std::numeric_limits<T>::max_exponent <= 128 ||
v < std::ldexp(static_cast<T>(1), 128)));
if (v >= std::ldexp(static_cast<T>(1), 64)) {
uint64_t hi = static_cast<uint64_t>(std::ldexp(v, -64));
uint64_t lo = static_cast<uint64_t>(v - std::ldexp(static_cast<T>(hi), 64));
return MakeUint128(hi, lo);
}
return MakeUint128(0, static_cast<uint64_t>(v));
}
#if defined(__clang__) && !defined(__SSE3__)
// Workaround for clang bug: https://bugs.llvm.org/show_bug.cgi?id=38289
// Casting from long double to uint64_t is miscompiled and drops bits.
// It is more work, so only use when we need the workaround.
uint128 MakeUint128FromFloat(long double v) {
// Go 50 bits at a time, that fits in a double
static_assert(std::numeric_limits<double>::digits >= 50, "");
static_assert(std::numeric_limits<long double>::digits <= 150, "");
// Undefined behavior if v is not finite or cannot fit into uint128.
assert(std::isfinite(v) && v > -1 && v < std::ldexp(1.0L, 128));
v = std::ldexp(v, -100);
uint64_t w0 = static_cast<uint64_t>(static_cast<double>(std::trunc(v)));
v = std::ldexp(v - static_cast<double>(w0), 50);
uint64_t w1 = static_cast<uint64_t>(static_cast<double>(std::trunc(v)));
v = std::ldexp(v - static_cast<double>(w1), 50);
uint64_t w2 = static_cast<uint64_t>(static_cast<double>(std::trunc(v)));
return (static_cast<uint128>(w0) << 100) | (static_cast<uint128>(w1) << 50) |
static_cast<uint128>(w2);
}
#endif // __clang__ && !__SSE3__
} // namespace
uint128::uint128(float v) : uint128(MakeUint128FromFloat(v)) {}
uint128::uint128(double v) : uint128(MakeUint128FromFloat(v)) {}
uint128::uint128(long double v) : uint128(MakeUint128FromFloat(v)) {}
uint128 operator/(uint128 lhs, uint128 rhs) {
#if defined(ABSL_HAVE_INTRINSIC_INT128)
return static_cast<unsigned __int128>(lhs) /
static_cast<unsigned __int128>(rhs);
#else // ABSL_HAVE_INTRINSIC_INT128
uint128 quotient = 0;
uint128 remainder = 0;
DivModImpl(lhs, rhs, &quotient, &remainder);
return quotient;
#endif // ABSL_HAVE_INTRINSIC_INT128
}
uint128 operator%(uint128 lhs, uint128 rhs) {
#if defined(ABSL_HAVE_INTRINSIC_INT128)
return static_cast<unsigned __int128>(lhs) %
static_cast<unsigned __int128>(rhs);
#else // ABSL_HAVE_INTRINSIC_INT128
uint128 quotient = 0;
uint128 remainder = 0;
DivModImpl(lhs, rhs, &quotient, &remainder);
return remainder;
#endif // ABSL_HAVE_INTRINSIC_INT128
}
namespace {
std::string Uint128ToFormattedString(uint128 v, std::ios_base::fmtflags flags) {
// Select a divisor which is the largest power of the base < 2^64.
uint128 div;
int div_base_log;
switch (flags & std::ios::basefield) {
case std::ios::hex:
div = 0x1000000000000000; // 16^15
div_base_log = 15;
break;
case std::ios::oct:
div = 01000000000000000000000; // 8^21
div_base_log = 21;
break;
default: // std::ios::dec
div = 10000000000000000000u; // 10^19
div_base_log = 19;
break;
}
// Now piece together the uint128 representation from three chunks of the
// original value, each less than "div" and therefore representable as a
// uint64_t.
std::ostringstream os;
std::ios_base::fmtflags copy_mask =
std::ios::basefield | std::ios::showbase | std::ios::uppercase;
os.setf(flags & copy_mask, copy_mask);
uint128 high = v;
uint128 low;
DivModImpl(high, div, &high, &low);
uint128 mid;
DivModImpl(high, div, &high, &mid);
if (Uint128Low64(high) != 0) {
os << Uint128Low64(high);
os << std::noshowbase << std::setfill('0') << std::setw(div_base_log);
os << Uint128Low64(mid);
os << std::setw(div_base_log);
} else if (Uint128Low64(mid) != 0) {
os << Uint128Low64(mid);
os << std::noshowbase << std::setfill('0') << std::setw(div_base_log);
}
os << Uint128Low64(low);
return os.str();
}
} // namespace
std::ostream& operator<<(std::ostream& os, uint128 v) {
std::ios_base::fmtflags flags = os.flags();
std::string rep = Uint128ToFormattedString(v, flags);
// Add the requisite padding.
std::streamsize width = os.width(0);
if (static_cast<size_t>(width) > rep.size()) {
std::ios::fmtflags adjustfield = flags & std::ios::adjustfield;
if (adjustfield == std::ios::left) {
rep.append(width - rep.size(), os.fill());
} else if (adjustfield == std::ios::internal &&
(flags & std::ios::showbase) &&
(flags & std::ios::basefield) == std::ios::hex && v != 0) {
rep.insert(2, width - rep.size(), os.fill());
} else {
rep.insert(0, width - rep.size(), os.fill());
}
}
return os << rep;
}
} // inline namespace lts_2019_08_08
} // namespace absl
namespace std {
constexpr bool numeric_limits<absl::uint128>::is_specialized;
constexpr bool numeric_limits<absl::uint128>::is_signed;
constexpr bool numeric_limits<absl::uint128>::is_integer;
constexpr bool numeric_limits<absl::uint128>::is_exact;
constexpr bool numeric_limits<absl::uint128>::has_infinity;
constexpr bool numeric_limits<absl::uint128>::has_quiet_NaN;
constexpr bool numeric_limits<absl::uint128>::has_signaling_NaN;
constexpr float_denorm_style numeric_limits<absl::uint128>::has_denorm;
constexpr bool numeric_limits<absl::uint128>::has_denorm_loss;
constexpr float_round_style numeric_limits<absl::uint128>::round_style;
constexpr bool numeric_limits<absl::uint128>::is_iec559;
constexpr bool numeric_limits<absl::uint128>::is_bounded;
constexpr bool numeric_limits<absl::uint128>::is_modulo;
constexpr int numeric_limits<absl::uint128>::digits;
constexpr int numeric_limits<absl::uint128>::digits10;
constexpr int numeric_limits<absl::uint128>::max_digits10;
constexpr int numeric_limits<absl::uint128>::radix;
constexpr int numeric_limits<absl::uint128>::min_exponent;
constexpr int numeric_limits<absl::uint128>::min_exponent10;
constexpr int numeric_limits<absl::uint128>::max_exponent;
constexpr int numeric_limits<absl::uint128>::max_exponent10;
constexpr bool numeric_limits<absl::uint128>::traps;
constexpr bool numeric_limits<absl::uint128>::tinyness_before;
} // namespace std

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//
// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// -----------------------------------------------------------------------------
// File: int128.h
// -----------------------------------------------------------------------------
//
// This header file defines 128-bit integer types.
//
// Currently, this file defines `uint128`, an unsigned 128-bit integer;
// a signed 128-bit integer is forthcoming.
#ifndef ABSL_NUMERIC_INT128_H_
#define ABSL_NUMERIC_INT128_H_
#include <cassert>
#include <cmath>
#include <cstdint>
#include <cstring>
#include <iosfwd>
#include <limits>
#include <utility>
#include "absl/base/config.h"
#include "absl/base/macros.h"
#include "absl/base/port.h"
#if defined(_MSC_VER)
// In very old versions of MSVC and when the /Zc:wchar_t flag is off, wchar_t is
// a typedef for unsigned short. Otherwise wchar_t is mapped to the __wchar_t
// builtin type. We need to make sure not to define operator wchar_t()
// alongside operator unsigned short() in these instances.
#define ABSL_INTERNAL_WCHAR_T __wchar_t
#if defined(_M_X64)
#include <intrin.h>
#pragma intrinsic(_umul128)
#endif // defined(_M_X64)
#else // defined(_MSC_VER)
#define ABSL_INTERNAL_WCHAR_T wchar_t
#endif // defined(_MSC_VER)
namespace absl {
inline namespace lts_2019_08_08 {
// uint128
//
// An unsigned 128-bit integer type. The API is meant to mimic an intrinsic type
// as closely as is practical, including exhibiting undefined behavior in
// analogous cases (e.g. division by zero). This type is intended to be a
// drop-in replacement once C++ supports an intrinsic `uint128_t` type; when
// that occurs, existing well-behaved uses of `uint128` will continue to work
// using that new type.
//
// Note: code written with this type will continue to compile once `uint128_t`
// is introduced, provided the replacement helper functions
// `Uint128(Low|High)64()` and `MakeUint128()` are made.
//
// A `uint128` supports the following:
//
// * Implicit construction from integral types
// * Explicit conversion to integral types
//
// Additionally, if your compiler supports `__int128`, `uint128` is
// interoperable with that type. (Abseil checks for this compatibility through
// the `ABSL_HAVE_INTRINSIC_INT128` macro.)
//
// However, a `uint128` differs from intrinsic integral types in the following
// ways:
//
// * Errors on implicit conversions that do not preserve value (such as
// loss of precision when converting to float values).
// * Requires explicit construction from and conversion to floating point
// types.
// * Conversion to integral types requires an explicit static_cast() to
// mimic use of the `-Wnarrowing` compiler flag.
// * The alignment requirement of `uint128` may differ from that of an
// intrinsic 128-bit integer type depending on platform and build
// configuration.
//
// Example:
//
// float y = absl::Uint128Max(); // Error. uint128 cannot be implicitly
// // converted to float.
//
// absl::uint128 v;
// uint64_t i = v; // Error
// uint64_t i = static_cast<uint64_t>(v); // OK
//
class
#if defined(ABSL_HAVE_INTRINSIC_INT128)
alignas(unsigned __int128)
#endif // ABSL_HAVE_INTRINSIC_INT128
uint128 {
public:
uint128() = default;
// Constructors from arithmetic types
constexpr uint128(int v); // NOLINT(runtime/explicit)
constexpr uint128(unsigned int v); // NOLINT(runtime/explicit)
constexpr uint128(long v); // NOLINT(runtime/int)
constexpr uint128(unsigned long v); // NOLINT(runtime/int)
constexpr uint128(long long v); // NOLINT(runtime/int)
constexpr uint128(unsigned long long v); // NOLINT(runtime/int)
#ifdef ABSL_HAVE_INTRINSIC_INT128
constexpr uint128(__int128 v); // NOLINT(runtime/explicit)
constexpr uint128(unsigned __int128 v); // NOLINT(runtime/explicit)
#endif // ABSL_HAVE_INTRINSIC_INT128
explicit uint128(float v);
explicit uint128(double v);
explicit uint128(long double v);
// Assignment operators from arithmetic types
uint128& operator=(int v);
uint128& operator=(unsigned int v);
uint128& operator=(long v); // NOLINT(runtime/int)
uint128& operator=(unsigned long v); // NOLINT(runtime/int)
uint128& operator=(long long v); // NOLINT(runtime/int)
uint128& operator=(unsigned long long v); // NOLINT(runtime/int)
#ifdef ABSL_HAVE_INTRINSIC_INT128
uint128& operator=(__int128 v);
uint128& operator=(unsigned __int128 v);
#endif // ABSL_HAVE_INTRINSIC_INT128
// Conversion operators to other arithmetic types
constexpr explicit operator bool() const;
constexpr explicit operator char() const;
constexpr explicit operator signed char() const;
constexpr explicit operator unsigned char() const;
constexpr explicit operator char16_t() const;
constexpr explicit operator char32_t() const;
constexpr explicit operator ABSL_INTERNAL_WCHAR_T() const;
constexpr explicit operator short() const; // NOLINT(runtime/int)
// NOLINTNEXTLINE(runtime/int)
constexpr explicit operator unsigned short() const;
constexpr explicit operator int() const;
constexpr explicit operator unsigned int() const;
constexpr explicit operator long() const; // NOLINT(runtime/int)
// NOLINTNEXTLINE(runtime/int)
constexpr explicit operator unsigned long() const;
// NOLINTNEXTLINE(runtime/int)
constexpr explicit operator long long() const;
// NOLINTNEXTLINE(runtime/int)
constexpr explicit operator unsigned long long() const;
#ifdef ABSL_HAVE_INTRINSIC_INT128
constexpr explicit operator __int128() const;
constexpr explicit operator unsigned __int128() const;
#endif // ABSL_HAVE_INTRINSIC_INT128
explicit operator float() const;
explicit operator double() const;
explicit operator long double() const;
// Trivial copy constructor, assignment operator and destructor.
// Arithmetic operators.
uint128& operator+=(uint128 other);
uint128& operator-=(uint128 other);
uint128& operator*=(uint128 other);
// Long division/modulo for uint128.
uint128& operator/=(uint128 other);
uint128& operator%=(uint128 other);
uint128 operator++(int);
uint128 operator--(int);
uint128& operator<<=(int);
uint128& operator>>=(int);
uint128& operator&=(uint128 other);
uint128& operator|=(uint128 other);
uint128& operator^=(uint128 other);
uint128& operator++();
uint128& operator--();
// Uint128Low64()
//
// Returns the lower 64-bit value of a `uint128` value.
friend constexpr uint64_t Uint128Low64(uint128 v);
// Uint128High64()
//
// Returns the higher 64-bit value of a `uint128` value.
friend constexpr uint64_t Uint128High64(uint128 v);
// MakeUInt128()
//
// Constructs a `uint128` numeric value from two 64-bit unsigned integers.
// Note that this factory function is the only way to construct a `uint128`
// from integer values greater than 2^64.
//
// Example:
//
// absl::uint128 big = absl::MakeUint128(1, 0);
friend constexpr uint128 MakeUint128(uint64_t high, uint64_t low);
// Uint128Max()
//
// Returns the highest value for a 128-bit unsigned integer.
friend constexpr uint128 Uint128Max();
// Support for absl::Hash.
template <typename H>
friend H AbslHashValue(H h, uint128 v) {
return H::combine(std::move(h), Uint128High64(v), Uint128Low64(v));
}
private:
constexpr uint128(uint64_t high, uint64_t low);
// TODO(strel) Update implementation to use __int128 once all users of
// uint128 are fixed to not depend on alignof(uint128) == 8. Also add
// alignas(16) to class definition to keep alignment consistent across
// platforms.
#if defined(ABSL_IS_LITTLE_ENDIAN)
uint64_t lo_;
uint64_t hi_;
#elif defined(ABSL_IS_BIG_ENDIAN)
uint64_t hi_;
uint64_t lo_;
#else // byte order
#error "Unsupported byte order: must be little-endian or big-endian."
#endif // byte order
};
// Prefer to use the constexpr `Uint128Max()`.
//
// TODO(absl-team) deprecate kuint128max once migration tool is released.
extern const uint128 kuint128max;
// allow uint128 to be logged
std::ostream& operator<<(std::ostream& os, uint128 v);
// TODO(strel) add operator>>(std::istream&, uint128)
constexpr uint128 Uint128Max() {
return uint128((std::numeric_limits<uint64_t>::max)(),
(std::numeric_limits<uint64_t>::max)());
}
} // inline namespace lts_2019_08_08
} // namespace absl
// Specialized numeric_limits for uint128.
namespace std {
template <>
class numeric_limits<absl::uint128> {
public:
static constexpr bool is_specialized = true;
static constexpr bool is_signed = false;
static constexpr bool is_integer = true;
static constexpr bool is_exact = true;
static constexpr bool has_infinity = false;
static constexpr bool has_quiet_NaN = false;
static constexpr bool has_signaling_NaN = false;
static constexpr float_denorm_style has_denorm = denorm_absent;
static constexpr bool has_denorm_loss = false;
static constexpr float_round_style round_style = round_toward_zero;
static constexpr bool is_iec559 = false;
static constexpr bool is_bounded = true;
static constexpr bool is_modulo = true;
static constexpr int digits = 128;
static constexpr int digits10 = 38;
static constexpr int max_digits10 = 0;
static constexpr int radix = 2;
static constexpr int min_exponent = 0;
static constexpr int min_exponent10 = 0;
static constexpr int max_exponent = 0;
static constexpr int max_exponent10 = 0;
#ifdef ABSL_HAVE_INTRINSIC_INT128
static constexpr bool traps = numeric_limits<unsigned __int128>::traps;
#else // ABSL_HAVE_INTRINSIC_INT128
static constexpr bool traps = numeric_limits<uint64_t>::traps;
#endif // ABSL_HAVE_INTRINSIC_INT128
static constexpr bool tinyness_before = false;
static constexpr absl::uint128 (min)() { return 0; }
static constexpr absl::uint128 lowest() { return 0; }
static constexpr absl::uint128 (max)() { return absl::Uint128Max(); }
static constexpr absl::uint128 epsilon() { return 0; }
static constexpr absl::uint128 round_error() { return 0; }
static constexpr absl::uint128 infinity() { return 0; }
static constexpr absl::uint128 quiet_NaN() { return 0; }
static constexpr absl::uint128 signaling_NaN() { return 0; }
static constexpr absl::uint128 denorm_min() { return 0; }
};
} // namespace std
// TODO(absl-team): Implement signed 128-bit type
// --------------------------------------------------------------------------
// Implementation details follow
// --------------------------------------------------------------------------
namespace absl {
inline namespace lts_2019_08_08 {
constexpr uint128 MakeUint128(uint64_t high, uint64_t low) {
return uint128(high, low);
}
// Assignment from integer types.
inline uint128& uint128::operator=(int v) { return *this = uint128(v); }
inline uint128& uint128::operator=(unsigned int v) {
return *this = uint128(v);
}
inline uint128& uint128::operator=(long v) { // NOLINT(runtime/int)
return *this = uint128(v);
}
// NOLINTNEXTLINE(runtime/int)
inline uint128& uint128::operator=(unsigned long v) {
return *this = uint128(v);
}
// NOLINTNEXTLINE(runtime/int)
inline uint128& uint128::operator=(long long v) {
return *this = uint128(v);
}
// NOLINTNEXTLINE(runtime/int)
inline uint128& uint128::operator=(unsigned long long v) {
return *this = uint128(v);
}
#ifdef ABSL_HAVE_INTRINSIC_INT128
inline uint128& uint128::operator=(__int128 v) {
return *this = uint128(v);
}
inline uint128& uint128::operator=(unsigned __int128 v) {
return *this = uint128(v);
}
#endif // ABSL_HAVE_INTRINSIC_INT128
// Arithmetic operators.
uint128 operator<<(uint128 lhs, int amount);
uint128 operator>>(uint128 lhs, int amount);
uint128 operator+(uint128 lhs, uint128 rhs);
uint128 operator-(uint128 lhs, uint128 rhs);
uint128 operator*(uint128 lhs, uint128 rhs);
uint128 operator/(uint128 lhs, uint128 rhs);
uint128 operator%(uint128 lhs, uint128 rhs);
inline uint128& uint128::operator<<=(int amount) {
*this = *this << amount;
return *this;
}
inline uint128& uint128::operator>>=(int amount) {
*this = *this >> amount;
return *this;
}
inline uint128& uint128::operator+=(uint128 other) {
*this = *this + other;
return *this;
}
inline uint128& uint128::operator-=(uint128 other) {
*this = *this - other;
return *this;
}
inline uint128& uint128::operator*=(uint128 other) {
*this = *this * other;
return *this;
}
inline uint128& uint128::operator/=(uint128 other) {
*this = *this / other;
return *this;
}
inline uint128& uint128::operator%=(uint128 other) {
*this = *this % other;
return *this;
}
constexpr uint64_t Uint128Low64(uint128 v) { return v.lo_; }
constexpr uint64_t Uint128High64(uint128 v) { return v.hi_; }
// Constructors from integer types.
#if defined(ABSL_IS_LITTLE_ENDIAN)
constexpr uint128::uint128(uint64_t high, uint64_t low)
: lo_{low}, hi_{high} {}
constexpr uint128::uint128(int v)
: lo_{static_cast<uint64_t>(v)},
hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0} {}
constexpr uint128::uint128(long v) // NOLINT(runtime/int)
: lo_{static_cast<uint64_t>(v)},
hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0} {}
constexpr uint128::uint128(long long v) // NOLINT(runtime/int)
: lo_{static_cast<uint64_t>(v)},
hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0} {}
constexpr uint128::uint128(unsigned int v) : lo_{v}, hi_{0} {}
// NOLINTNEXTLINE(runtime/int)
constexpr uint128::uint128(unsigned long v) : lo_{v}, hi_{0} {}
// NOLINTNEXTLINE(runtime/int)
constexpr uint128::uint128(unsigned long long v) : lo_{v}, hi_{0} {}
#ifdef ABSL_HAVE_INTRINSIC_INT128
constexpr uint128::uint128(__int128 v)
: lo_{static_cast<uint64_t>(v & ~uint64_t{0})},
hi_{static_cast<uint64_t>(static_cast<unsigned __int128>(v) >> 64)} {}
constexpr uint128::uint128(unsigned __int128 v)
: lo_{static_cast<uint64_t>(v & ~uint64_t{0})},
hi_{static_cast<uint64_t>(v >> 64)} {}
#endif // ABSL_HAVE_INTRINSIC_INT128
#elif defined(ABSL_IS_BIG_ENDIAN)
constexpr uint128::uint128(uint64_t high, uint64_t low)
: hi_{high}, lo_{low} {}
constexpr uint128::uint128(int v)
: hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0},
lo_{static_cast<uint64_t>(v)} {}
constexpr uint128::uint128(long v) // NOLINT(runtime/int)
: hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0},
lo_{static_cast<uint64_t>(v)} {}
constexpr uint128::uint128(long long v) // NOLINT(runtime/int)
: hi_{v < 0 ? (std::numeric_limits<uint64_t>::max)() : 0},
lo_{static_cast<uint64_t>(v)} {}
constexpr uint128::uint128(unsigned int v) : hi_{0}, lo_{v} {}
// NOLINTNEXTLINE(runtime/int)
constexpr uint128::uint128(unsigned long v) : hi_{0}, lo_{v} {}
// NOLINTNEXTLINE(runtime/int)
constexpr uint128::uint128(unsigned long long v) : hi_{0}, lo_{v} {}
#ifdef ABSL_HAVE_INTRINSIC_INT128
constexpr uint128::uint128(__int128 v)
: hi_{static_cast<uint64_t>(static_cast<unsigned __int128>(v) >> 64)},
lo_{static_cast<uint64_t>(v & ~uint64_t{0})} {}
constexpr uint128::uint128(unsigned __int128 v)
: hi_{static_cast<uint64_t>(v >> 64)},
lo_{static_cast<uint64_t>(v & ~uint64_t{0})} {}
#endif // ABSL_HAVE_INTRINSIC_INT128
#else // byte order
#error "Unsupported byte order: must be little-endian or big-endian."
#endif // byte order
// Conversion operators to integer types.
constexpr uint128::operator bool() const { return lo_ || hi_; }
constexpr uint128::operator char() const { return static_cast<char>(lo_); }
constexpr uint128::operator signed char() const {
return static_cast<signed char>(lo_);
}
constexpr uint128::operator unsigned char() const {
return static_cast<unsigned char>(lo_);
}
constexpr uint128::operator char16_t() const {
return static_cast<char16_t>(lo_);
}
constexpr uint128::operator char32_t() const {
return static_cast<char32_t>(lo_);
}
constexpr uint128::operator ABSL_INTERNAL_WCHAR_T() const {
return static_cast<ABSL_INTERNAL_WCHAR_T>(lo_);
}
// NOLINTNEXTLINE(runtime/int)
constexpr uint128::operator short() const { return static_cast<short>(lo_); }
constexpr uint128::operator unsigned short() const { // NOLINT(runtime/int)
return static_cast<unsigned short>(lo_); // NOLINT(runtime/int)
}
constexpr uint128::operator int() const { return static_cast<int>(lo_); }
constexpr uint128::operator unsigned int() const {
return static_cast<unsigned int>(lo_);
}
// NOLINTNEXTLINE(runtime/int)
constexpr uint128::operator long() const { return static_cast<long>(lo_); }
constexpr uint128::operator unsigned long() const { // NOLINT(runtime/int)
return static_cast<unsigned long>(lo_); // NOLINT(runtime/int)
}
constexpr uint128::operator long long() const { // NOLINT(runtime/int)
return static_cast<long long>(lo_); // NOLINT(runtime/int)
}
constexpr uint128::operator unsigned long long() const { // NOLINT(runtime/int)
return static_cast<unsigned long long>(lo_); // NOLINT(runtime/int)
}
#ifdef ABSL_HAVE_INTRINSIC_INT128
constexpr uint128::operator __int128() const {
return (static_cast<__int128>(hi_) << 64) + lo_;
}
constexpr uint128::operator unsigned __int128() const {
return (static_cast<unsigned __int128>(hi_) << 64) + lo_;
}
#endif // ABSL_HAVE_INTRINSIC_INT128
// Conversion operators to floating point types.
inline uint128::operator float() const {
return static_cast<float>(lo_) + std::ldexp(static_cast<float>(hi_), 64);
}
inline uint128::operator double() const {
return static_cast<double>(lo_) + std::ldexp(static_cast<double>(hi_), 64);
}
inline uint128::operator long double() const {
return static_cast<long double>(lo_) +
std::ldexp(static_cast<long double>(hi_), 64);
}
// Comparison operators.
inline bool operator==(uint128 lhs, uint128 rhs) {
return (Uint128Low64(lhs) == Uint128Low64(rhs) &&
Uint128High64(lhs) == Uint128High64(rhs));
}
inline bool operator!=(uint128 lhs, uint128 rhs) {
return !(lhs == rhs);
}
inline bool operator<(uint128 lhs, uint128 rhs) {
return (Uint128High64(lhs) == Uint128High64(rhs))
? (Uint128Low64(lhs) < Uint128Low64(rhs))
: (Uint128High64(lhs) < Uint128High64(rhs));
}
inline bool operator>(uint128 lhs, uint128 rhs) {
return (Uint128High64(lhs) == Uint128High64(rhs))
? (Uint128Low64(lhs) > Uint128Low64(rhs))
: (Uint128High64(lhs) > Uint128High64(rhs));
}
inline bool operator<=(uint128 lhs, uint128 rhs) {
return (Uint128High64(lhs) == Uint128High64(rhs))
? (Uint128Low64(lhs) <= Uint128Low64(rhs))
: (Uint128High64(lhs) <= Uint128High64(rhs));
}
inline bool operator>=(uint128 lhs, uint128 rhs) {
return (Uint128High64(lhs) == Uint128High64(rhs))
? (Uint128Low64(lhs) >= Uint128Low64(rhs))
: (Uint128High64(lhs) >= Uint128High64(rhs));
}
// Unary operators.
inline uint128 operator-(uint128 val) {
uint64_t hi = ~Uint128High64(val);
uint64_t lo = ~Uint128Low64(val) + 1;
if (lo == 0) ++hi; // carry
return MakeUint128(hi, lo);
}
inline bool operator!(uint128 val) {
return !Uint128High64(val) && !Uint128Low64(val);
}
// Logical operators.
inline uint128 operator~(uint128 val) {
return MakeUint128(~Uint128High64(val), ~Uint128Low64(val));
}
inline uint128 operator|(uint128 lhs, uint128 rhs) {
return MakeUint128(Uint128High64(lhs) | Uint128High64(rhs),
Uint128Low64(lhs) | Uint128Low64(rhs));
}
inline uint128 operator&(uint128 lhs, uint128 rhs) {
return MakeUint128(Uint128High64(lhs) & Uint128High64(rhs),
Uint128Low64(lhs) & Uint128Low64(rhs));
}
inline uint128 operator^(uint128 lhs, uint128 rhs) {
return MakeUint128(Uint128High64(lhs) ^ Uint128High64(rhs),
Uint128Low64(lhs) ^ Uint128Low64(rhs));
}
inline uint128& uint128::operator|=(uint128 other) {
hi_ |= other.hi_;
lo_ |= other.lo_;
return *this;
}
inline uint128& uint128::operator&=(uint128 other) {
hi_ &= other.hi_;
lo_ &= other.lo_;
return *this;
}
inline uint128& uint128::operator^=(uint128 other) {
hi_ ^= other.hi_;
lo_ ^= other.lo_;
return *this;
}
// Arithmetic operators.
inline uint128 operator<<(uint128 lhs, int amount) {
// uint64_t shifts of >= 64 are undefined, so we will need some
// special-casing.
if (amount < 64) {
if (amount != 0) {
return MakeUint128(
(Uint128High64(lhs) << amount) | (Uint128Low64(lhs) >> (64 - amount)),
Uint128Low64(lhs) << amount);
}
return lhs;
}
return MakeUint128(Uint128Low64(lhs) << (amount - 64), 0);
}
inline uint128 operator>>(uint128 lhs, int amount) {
// uint64_t shifts of >= 64 are undefined, so we will need some
// special-casing.
if (amount < 64) {
if (amount != 0) {
return MakeUint128(Uint128High64(lhs) >> amount,
(Uint128Low64(lhs) >> amount) |
(Uint128High64(lhs) << (64 - amount)));
}
return lhs;
}
return MakeUint128(0, Uint128High64(lhs) >> (amount - 64));
}
inline uint128 operator+(uint128 lhs, uint128 rhs) {
uint128 result = MakeUint128(Uint128High64(lhs) + Uint128High64(rhs),
Uint128Low64(lhs) + Uint128Low64(rhs));
if (Uint128Low64(result) < Uint128Low64(lhs)) { // check for carry
return MakeUint128(Uint128High64(result) + 1, Uint128Low64(result));
}
return result;
}
inline uint128 operator-(uint128 lhs, uint128 rhs) {
uint128 result = MakeUint128(Uint128High64(lhs) - Uint128High64(rhs),
Uint128Low64(lhs) - Uint128Low64(rhs));
if (Uint128Low64(lhs) < Uint128Low64(rhs)) { // check for carry
return MakeUint128(Uint128High64(result) - 1, Uint128Low64(result));
}
return result;
}
inline uint128 operator*(uint128 lhs, uint128 rhs) {
#if defined(ABSL_HAVE_INTRINSIC_INT128)
// TODO(strel) Remove once alignment issues are resolved and unsigned __int128
// can be used for uint128 storage.
return static_cast<unsigned __int128>(lhs) *
static_cast<unsigned __int128>(rhs);
#elif defined(_MSC_VER) && defined(_M_X64)
uint64_t carry;
uint64_t low = _umul128(Uint128Low64(lhs), Uint128Low64(rhs), &carry);
return MakeUint128(Uint128Low64(lhs) * Uint128High64(rhs) +
Uint128High64(lhs) * Uint128Low64(rhs) + carry,
low);
#else // ABSL_HAVE_INTRINSIC128
uint64_t a32 = Uint128Low64(lhs) >> 32;
uint64_t a00 = Uint128Low64(lhs) & 0xffffffff;
uint64_t b32 = Uint128Low64(rhs) >> 32;
uint64_t b00 = Uint128Low64(rhs) & 0xffffffff;
uint128 result =
MakeUint128(Uint128High64(lhs) * Uint128Low64(rhs) +
Uint128Low64(lhs) * Uint128High64(rhs) + a32 * b32,
a00 * b00);
result += uint128(a32 * b00) << 32;
result += uint128(a00 * b32) << 32;
return result;
#endif // ABSL_HAVE_INTRINSIC128
}
// Increment/decrement operators.
inline uint128 uint128::operator++(int) {
uint128 tmp(*this);
*this += 1;
return tmp;
}
inline uint128 uint128::operator--(int) {
uint128 tmp(*this);
*this -= 1;
return tmp;
}
inline uint128& uint128::operator++() {
*this += 1;
return *this;
}
inline uint128& uint128::operator--() {
*this -= 1;
return *this;
}
#if defined(ABSL_HAVE_INTRINSIC_INT128)
#include "absl/numeric/int128_have_intrinsic.inc"
#else // ABSL_HAVE_INTRINSIC_INT128
#include "absl/numeric/int128_no_intrinsic.inc"
#endif // ABSL_HAVE_INTRINSIC_INT128
} // inline namespace lts_2019_08_08
} // namespace absl
#undef ABSL_INTERNAL_WCHAR_T
#endif // ABSL_NUMERIC_INT128_H_

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// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/numeric/int128.h"
#include <algorithm>
#include <cstdint>
#include <random>
#include <vector>
#include "benchmark/benchmark.h"
#include "absl/base/config.h"
namespace {
constexpr size_t kSampleSize = 1000000;
std::mt19937 MakeRandomEngine() {
std::random_device r;
std::seed_seq seed({r(), r(), r(), r(), r(), r(), r(), r()});
return std::mt19937(seed);
}
std::vector<std::pair<absl::uint128, absl::uint128>>
GetRandomClass128SampleUniformDivisor() {
std::vector<std::pair<absl::uint128, absl::uint128>> values;
std::mt19937 random = MakeRandomEngine();
std::uniform_int_distribution<uint64_t> uniform_uint64;
values.reserve(kSampleSize);
for (size_t i = 0; i < kSampleSize; ++i) {
absl::uint128 a =
absl::MakeUint128(uniform_uint64(random), uniform_uint64(random));
absl::uint128 b =
absl::MakeUint128(uniform_uint64(random), uniform_uint64(random));
values.emplace_back(std::max(a, b),
std::max(absl::uint128(2), std::min(a, b)));
}
return values;
}
void BM_DivideClass128UniformDivisor(benchmark::State& state) {
auto values = GetRandomClass128SampleUniformDivisor();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first / pair.second);
}
}
}
BENCHMARK(BM_DivideClass128UniformDivisor);
std::vector<std::pair<absl::uint128, uint64_t>>
GetRandomClass128SampleSmallDivisor() {
std::vector<std::pair<absl::uint128, uint64_t>> values;
std::mt19937 random = MakeRandomEngine();
std::uniform_int_distribution<uint64_t> uniform_uint64;
values.reserve(kSampleSize);
for (size_t i = 0; i < kSampleSize; ++i) {
absl::uint128 a =
absl::MakeUint128(uniform_uint64(random), uniform_uint64(random));
uint64_t b = std::max(uint64_t{2}, uniform_uint64(random));
values.emplace_back(std::max(a, absl::uint128(b)), b);
}
return values;
}
void BM_DivideClass128SmallDivisor(benchmark::State& state) {
auto values = GetRandomClass128SampleSmallDivisor();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first / pair.second);
}
}
}
BENCHMARK(BM_DivideClass128SmallDivisor);
std::vector<std::pair<absl::uint128, absl::uint128>> GetRandomClass128Sample() {
std::vector<std::pair<absl::uint128, absl::uint128>> values;
std::mt19937 random = MakeRandomEngine();
std::uniform_int_distribution<uint64_t> uniform_uint64;
values.reserve(kSampleSize);
for (size_t i = 0; i < kSampleSize; ++i) {
values.emplace_back(
absl::MakeUint128(uniform_uint64(random), uniform_uint64(random)),
absl::MakeUint128(uniform_uint64(random), uniform_uint64(random)));
}
return values;
}
void BM_MultiplyClass128(benchmark::State& state) {
auto values = GetRandomClass128Sample();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first * pair.second);
}
}
}
BENCHMARK(BM_MultiplyClass128);
void BM_AddClass128(benchmark::State& state) {
auto values = GetRandomClass128Sample();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first + pair.second);
}
}
}
BENCHMARK(BM_AddClass128);
#ifdef ABSL_HAVE_INTRINSIC_INT128
// Some implementations of <random> do not support __int128 when it is
// available, so we make our own uniform_int_distribution-like type.
class UniformIntDistribution128 {
public:
// NOLINTNEXTLINE: mimicking std::uniform_int_distribution API
unsigned __int128 operator()(std::mt19937& generator) {
return (static_cast<unsigned __int128>(dist64_(generator)) << 64) |
dist64_(generator);
}
private:
std::uniform_int_distribution<uint64_t> dist64_;
};
std::vector<std::pair<unsigned __int128, unsigned __int128>>
GetRandomIntrinsic128SampleUniformDivisor() {
std::vector<std::pair<unsigned __int128, unsigned __int128>> values;
std::mt19937 random = MakeRandomEngine();
UniformIntDistribution128 uniform_uint128;
values.reserve(kSampleSize);
for (size_t i = 0; i < kSampleSize; ++i) {
unsigned __int128 a = uniform_uint128(random);
unsigned __int128 b = uniform_uint128(random);
values.emplace_back(
std::max(a, b),
std::max(static_cast<unsigned __int128>(2), std::min(a, b)));
}
return values;
}
void BM_DivideIntrinsic128UniformDivisor(benchmark::State& state) {
auto values = GetRandomIntrinsic128SampleUniformDivisor();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first / pair.second);
}
}
}
BENCHMARK(BM_DivideIntrinsic128UniformDivisor);
std::vector<std::pair<unsigned __int128, uint64_t>>
GetRandomIntrinsic128SampleSmallDivisor() {
std::vector<std::pair<unsigned __int128, uint64_t>> values;
std::mt19937 random = MakeRandomEngine();
UniformIntDistribution128 uniform_uint128;
std::uniform_int_distribution<uint64_t> uniform_uint64;
values.reserve(kSampleSize);
for (size_t i = 0; i < kSampleSize; ++i) {
unsigned __int128 a = uniform_uint128(random);
uint64_t b = std::max(uint64_t{2}, uniform_uint64(random));
values.emplace_back(std::max(a, static_cast<unsigned __int128>(b)), b);
}
return values;
}
void BM_DivideIntrinsic128SmallDivisor(benchmark::State& state) {
auto values = GetRandomIntrinsic128SampleSmallDivisor();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first / pair.second);
}
}
}
BENCHMARK(BM_DivideIntrinsic128SmallDivisor);
std::vector<std::pair<unsigned __int128, unsigned __int128>>
GetRandomIntrinsic128Sample() {
std::vector<std::pair<unsigned __int128, unsigned __int128>> values;
std::mt19937 random = MakeRandomEngine();
UniformIntDistribution128 uniform_uint128;
values.reserve(kSampleSize);
for (size_t i = 0; i < kSampleSize; ++i) {
values.emplace_back(uniform_uint128(random), uniform_uint128(random));
}
return values;
}
void BM_MultiplyIntrinsic128(benchmark::State& state) {
auto values = GetRandomIntrinsic128Sample();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first * pair.second);
}
}
}
BENCHMARK(BM_MultiplyIntrinsic128);
void BM_AddIntrinsic128(benchmark::State& state) {
auto values = GetRandomIntrinsic128Sample();
while (state.KeepRunningBatch(values.size())) {
for (const auto& pair : values) {
benchmark::DoNotOptimize(pair.first + pair.second);
}
}
}
BENCHMARK(BM_AddIntrinsic128);
#endif // ABSL_HAVE_INTRINSIC_INT128
} // namespace

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//
// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// This file contains :int128 implementation details that depend on internal
// representation when ABSL_HAVE_INTRINSIC_INT128 is defined. This file is
// included by int128.h and relies on ABSL_INTERNAL_WCHAR_T being defined.

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//
// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// This file contains :int128 implementation details that depend on internal
// representation when ABSL_HAVE_INTRINSIC_INT128 is *not* defined. This file
// is included by int128.h and relies on ABSL_INTERNAL_WCHAR_T being defined.

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// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/numeric/int128.h"
#include <sstream>
#include <string>
#include "gtest/gtest.h"
namespace {
struct Uint128TestCase {
absl::uint128 value;
std::ios_base::fmtflags flags;
std::streamsize width;
const char* expected;
};
constexpr char kFill = '_';
std::string StreamFormatToString(std::ios_base::fmtflags flags,
std::streamsize width) {
std::vector<const char*> flagstr;
switch (flags & std::ios::basefield) {
case std::ios::dec:
flagstr.push_back("std::ios::dec");
break;
case std::ios::oct:
flagstr.push_back("std::ios::oct");
break;
case std::ios::hex:
flagstr.push_back("std::ios::hex");
break;
default: // basefield not specified
break;
}
switch (flags & std::ios::adjustfield) {
case std::ios::left:
flagstr.push_back("std::ios::left");
break;
case std::ios::internal:
flagstr.push_back("std::ios::internal");
break;
case std::ios::right:
flagstr.push_back("std::ios::right");
break;
default: // adjustfield not specified
break;
}
if (flags & std::ios::uppercase) flagstr.push_back("std::ios::uppercase");
if (flags & std::ios::showbase) flagstr.push_back("std::ios::showbase");
if (flags & std::ios::showpos) flagstr.push_back("std::ios::showpos");
std::ostringstream msg;
msg << "\n StreamFormatToString(test_case.flags, test_case.width)\n "
"flags: ";
if (!flagstr.empty()) {
for (size_t i = 0; i < flagstr.size() - 1; ++i) msg << flagstr[i] << " | ";
msg << flagstr.back();
} else {
msg << "(default)";
}
msg << "\n width: " << width << "\n fill: '" << kFill << "'";
return msg.str();
}
void CheckUint128Case(const Uint128TestCase& test_case) {
std::ostringstream os;
os.flags(test_case.flags);
os.width(test_case.width);
os.fill(kFill);
os << test_case.value;
SCOPED_TRACE(StreamFormatToString(test_case.flags, test_case.width));
EXPECT_EQ(test_case.expected, os.str());
}
constexpr std::ios::fmtflags kDec = std::ios::dec;
constexpr std::ios::fmtflags kOct = std::ios::oct;
constexpr std::ios::fmtflags kHex = std::ios::hex;
constexpr std::ios::fmtflags kLeft = std::ios::left;
constexpr std::ios::fmtflags kInt = std::ios::internal;
constexpr std::ios::fmtflags kRight = std::ios::right;
constexpr std::ios::fmtflags kUpper = std::ios::uppercase;
constexpr std::ios::fmtflags kBase = std::ios::showbase;
constexpr std::ios::fmtflags kPos = std::ios::showpos;
TEST(Uint128, OStreamValueTest) {
CheckUint128Case({1, kDec, /*width = */ 0, "1"});
CheckUint128Case({1, kOct, /*width = */ 0, "1"});
CheckUint128Case({1, kHex, /*width = */ 0, "1"});
CheckUint128Case({9, kDec, /*width = */ 0, "9"});
CheckUint128Case({9, kOct, /*width = */ 0, "11"});
CheckUint128Case({9, kHex, /*width = */ 0, "9"});
CheckUint128Case({12345, kDec, /*width = */ 0, "12345"});
CheckUint128Case({12345, kOct, /*width = */ 0, "30071"});
CheckUint128Case({12345, kHex, /*width = */ 0, "3039"});
CheckUint128Case(
{0x8000000000000000, kDec, /*width = */ 0, "9223372036854775808"});
CheckUint128Case(
{0x8000000000000000, kOct, /*width = */ 0, "1000000000000000000000"});
CheckUint128Case(
{0x8000000000000000, kHex, /*width = */ 0, "8000000000000000"});
CheckUint128Case({std::numeric_limits<uint64_t>::max(), kDec,
/*width = */ 0, "18446744073709551615"});
CheckUint128Case({std::numeric_limits<uint64_t>::max(), kOct,
/*width = */ 0, "1777777777777777777777"});
CheckUint128Case({std::numeric_limits<uint64_t>::max(), kHex,
/*width = */ 0, "ffffffffffffffff"});
CheckUint128Case(
{absl::MakeUint128(1, 0), kDec, /*width = */ 0, "18446744073709551616"});
CheckUint128Case({absl::MakeUint128(1, 0), kOct, /*width = */ 0,
"2000000000000000000000"});
CheckUint128Case(
{absl::MakeUint128(1, 0), kHex, /*width = */ 0, "10000000000000000"});
CheckUint128Case({absl::MakeUint128(0x8000000000000000, 0), kDec,
/*width = */ 0, "170141183460469231731687303715884105728"});
CheckUint128Case({absl::MakeUint128(0x8000000000000000, 0), kOct,
/*width = */ 0,
"2000000000000000000000000000000000000000000"});
CheckUint128Case({absl::MakeUint128(0x8000000000000000, 0), kHex,
/*width = */ 0, "80000000000000000000000000000000"});
CheckUint128Case({absl::kuint128max, kDec, /*width = */ 0,
"340282366920938463463374607431768211455"});
CheckUint128Case({absl::kuint128max, kOct, /*width = */ 0,
"3777777777777777777777777777777777777777777"});
CheckUint128Case({absl::kuint128max, kHex, /*width = */ 0,
"ffffffffffffffffffffffffffffffff"});
}
std::vector<Uint128TestCase> GetUint128FormatCases();
TEST(Uint128, OStreamFormatTest) {
for (const Uint128TestCase& test_case : GetUint128FormatCases()) {
CheckUint128Case(test_case);
}
}
std::vector<Uint128TestCase> GetUint128FormatCases() {
return {
{0, std::ios_base::fmtflags(), /*width = */ 0, "0"},
{0, std::ios_base::fmtflags(), /*width = */ 6, "_____0"},
{0, kPos, /*width = */ 0, "0"},
{0, kPos, /*width = */ 6, "_____0"},
{0, kBase, /*width = */ 0, "0"},
{0, kBase, /*width = */ 6, "_____0"},
{0, kBase | kPos, /*width = */ 0, "0"},
{0, kBase | kPos, /*width = */ 6, "_____0"},
{0, kUpper, /*width = */ 0, "0"},
{0, kUpper, /*width = */ 6, "_____0"},
{0, kUpper | kPos, /*width = */ 0, "0"},
{0, kUpper | kPos, /*width = */ 6, "_____0"},
{0, kUpper | kBase, /*width = */ 0, "0"},
{0, kUpper | kBase, /*width = */ 6, "_____0"},
{0, kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kLeft, /*width = */ 0, "0"},
{0, kLeft, /*width = */ 6, "0_____"},
{0, kLeft | kPos, /*width = */ 0, "0"},
{0, kLeft | kPos, /*width = */ 6, "0_____"},
{0, kLeft | kBase, /*width = */ 0, "0"},
{0, kLeft | kBase, /*width = */ 6, "0_____"},
{0, kLeft | kBase | kPos, /*width = */ 0, "0"},
{0, kLeft | kBase | kPos, /*width = */ 6, "0_____"},
{0, kLeft | kUpper, /*width = */ 0, "0"},
{0, kLeft | kUpper, /*width = */ 6, "0_____"},
{0, kLeft | kUpper | kPos, /*width = */ 0, "0"},
{0, kLeft | kUpper | kPos, /*width = */ 6, "0_____"},
{0, kLeft | kUpper | kBase, /*width = */ 0, "0"},
{0, kLeft | kUpper | kBase, /*width = */ 6, "0_____"},
{0, kLeft | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kLeft | kUpper | kBase | kPos, /*width = */ 6, "0_____"},
{0, kInt, /*width = */ 0, "0"},
{0, kInt, /*width = */ 6, "_____0"},
{0, kInt | kPos, /*width = */ 0, "0"},
{0, kInt | kPos, /*width = */ 6, "_____0"},
{0, kInt | kBase, /*width = */ 0, "0"},
{0, kInt | kBase, /*width = */ 6, "_____0"},
{0, kInt | kBase | kPos, /*width = */ 0, "0"},
{0, kInt | kBase | kPos, /*width = */ 6, "_____0"},
{0, kInt | kUpper, /*width = */ 0, "0"},
{0, kInt | kUpper, /*width = */ 6, "_____0"},
{0, kInt | kUpper | kPos, /*width = */ 0, "0"},
{0, kInt | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kInt | kUpper | kBase, /*width = */ 0, "0"},
{0, kInt | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kInt | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kInt | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kRight, /*width = */ 0, "0"},
{0, kRight, /*width = */ 6, "_____0"},
{0, kRight | kPos, /*width = */ 0, "0"},
{0, kRight | kPos, /*width = */ 6, "_____0"},
{0, kRight | kBase, /*width = */ 0, "0"},
{0, kRight | kBase, /*width = */ 6, "_____0"},
{0, kRight | kBase | kPos, /*width = */ 0, "0"},
{0, kRight | kBase | kPos, /*width = */ 6, "_____0"},
{0, kRight | kUpper, /*width = */ 0, "0"},
{0, kRight | kUpper, /*width = */ 6, "_____0"},
{0, kRight | kUpper | kPos, /*width = */ 0, "0"},
{0, kRight | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kRight | kUpper | kBase, /*width = */ 0, "0"},
{0, kRight | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kRight | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kRight | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kDec, /*width = */ 0, "0"},
{0, kDec, /*width = */ 6, "_____0"},
{0, kDec | kPos, /*width = */ 0, "0"},
{0, kDec | kPos, /*width = */ 6, "_____0"},
{0, kDec | kBase, /*width = */ 0, "0"},
{0, kDec | kBase, /*width = */ 6, "_____0"},
{0, kDec | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kBase | kPos, /*width = */ 6, "_____0"},
{0, kDec | kUpper, /*width = */ 0, "0"},
{0, kDec | kUpper, /*width = */ 6, "_____0"},
{0, kDec | kUpper | kPos, /*width = */ 0, "0"},
{0, kDec | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kDec | kUpper | kBase, /*width = */ 0, "0"},
{0, kDec | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kDec | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kDec | kLeft, /*width = */ 0, "0"},
{0, kDec | kLeft, /*width = */ 6, "0_____"},
{0, kDec | kLeft | kPos, /*width = */ 0, "0"},
{0, kDec | kLeft | kPos, /*width = */ 6, "0_____"},
{0, kDec | kLeft | kBase, /*width = */ 0, "0"},
{0, kDec | kLeft | kBase, /*width = */ 6, "0_____"},
{0, kDec | kLeft | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kLeft | kBase | kPos, /*width = */ 6, "0_____"},
{0, kDec | kLeft | kUpper, /*width = */ 0, "0"},
{0, kDec | kLeft | kUpper, /*width = */ 6, "0_____"},
{0, kDec | kLeft | kUpper | kPos, /*width = */ 0, "0"},
{0, kDec | kLeft | kUpper | kPos, /*width = */ 6, "0_____"},
{0, kDec | kLeft | kUpper | kBase, /*width = */ 0, "0"},
{0, kDec | kLeft | kUpper | kBase, /*width = */ 6, "0_____"},
{0, kDec | kLeft | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kLeft | kUpper | kBase | kPos, /*width = */ 6, "0_____"},
{0, kDec | kInt, /*width = */ 0, "0"},
{0, kDec | kInt, /*width = */ 6, "_____0"},
{0, kDec | kInt | kPos, /*width = */ 0, "0"},
{0, kDec | kInt | kPos, /*width = */ 6, "_____0"},
{0, kDec | kInt | kBase, /*width = */ 0, "0"},
{0, kDec | kInt | kBase, /*width = */ 6, "_____0"},
{0, kDec | kInt | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kInt | kBase | kPos, /*width = */ 6, "_____0"},
{0, kDec | kInt | kUpper, /*width = */ 0, "0"},
{0, kDec | kInt | kUpper, /*width = */ 6, "_____0"},
{0, kDec | kInt | kUpper | kPos, /*width = */ 0, "0"},
{0, kDec | kInt | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kDec | kInt | kUpper | kBase, /*width = */ 0, "0"},
{0, kDec | kInt | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kDec | kInt | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kInt | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kDec | kRight, /*width = */ 0, "0"},
{0, kDec | kRight, /*width = */ 6, "_____0"},
{0, kDec | kRight | kPos, /*width = */ 0, "0"},
{0, kDec | kRight | kPos, /*width = */ 6, "_____0"},
{0, kDec | kRight | kBase, /*width = */ 0, "0"},
{0, kDec | kRight | kBase, /*width = */ 6, "_____0"},
{0, kDec | kRight | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kRight | kBase | kPos, /*width = */ 6, "_____0"},
{0, kDec | kRight | kUpper, /*width = */ 0, "0"},
{0, kDec | kRight | kUpper, /*width = */ 6, "_____0"},
{0, kDec | kRight | kUpper | kPos, /*width = */ 0, "0"},
{0, kDec | kRight | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kDec | kRight | kUpper | kBase, /*width = */ 0, "0"},
{0, kDec | kRight | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kDec | kRight | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kDec | kRight | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kOct, /*width = */ 0, "0"},
{0, kOct, /*width = */ 6, "_____0"},
{0, kOct | kPos, /*width = */ 0, "0"},
{0, kOct | kPos, /*width = */ 6, "_____0"},
{0, kOct | kBase, /*width = */ 0, "0"},
{0, kOct | kBase, /*width = */ 6, "_____0"},
{0, kOct | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kBase | kPos, /*width = */ 6, "_____0"},
{0, kOct | kUpper, /*width = */ 0, "0"},
{0, kOct | kUpper, /*width = */ 6, "_____0"},
{0, kOct | kUpper | kPos, /*width = */ 0, "0"},
{0, kOct | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kOct | kUpper | kBase, /*width = */ 0, "0"},
{0, kOct | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kOct | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kOct | kLeft, /*width = */ 0, "0"},
{0, kOct | kLeft, /*width = */ 6, "0_____"},
{0, kOct | kLeft | kPos, /*width = */ 0, "0"},
{0, kOct | kLeft | kPos, /*width = */ 6, "0_____"},
{0, kOct | kLeft | kBase, /*width = */ 0, "0"},
{0, kOct | kLeft | kBase, /*width = */ 6, "0_____"},
{0, kOct | kLeft | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kLeft | kBase | kPos, /*width = */ 6, "0_____"},
{0, kOct | kLeft | kUpper, /*width = */ 0, "0"},
{0, kOct | kLeft | kUpper, /*width = */ 6, "0_____"},
{0, kOct | kLeft | kUpper | kPos, /*width = */ 0, "0"},
{0, kOct | kLeft | kUpper | kPos, /*width = */ 6, "0_____"},
{0, kOct | kLeft | kUpper | kBase, /*width = */ 0, "0"},
{0, kOct | kLeft | kUpper | kBase, /*width = */ 6, "0_____"},
{0, kOct | kLeft | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kLeft | kUpper | kBase | kPos, /*width = */ 6, "0_____"},
{0, kOct | kInt, /*width = */ 0, "0"},
{0, kOct | kInt, /*width = */ 6, "_____0"},
{0, kOct | kInt | kPos, /*width = */ 0, "0"},
{0, kOct | kInt | kPos, /*width = */ 6, "_____0"},
{0, kOct | kInt | kBase, /*width = */ 0, "0"},
{0, kOct | kInt | kBase, /*width = */ 6, "_____0"},
{0, kOct | kInt | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kInt | kBase | kPos, /*width = */ 6, "_____0"},
{0, kOct | kInt | kUpper, /*width = */ 0, "0"},
{0, kOct | kInt | kUpper, /*width = */ 6, "_____0"},
{0, kOct | kInt | kUpper | kPos, /*width = */ 0, "0"},
{0, kOct | kInt | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kOct | kInt | kUpper | kBase, /*width = */ 0, "0"},
{0, kOct | kInt | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kOct | kInt | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kInt | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kOct | kRight, /*width = */ 0, "0"},
{0, kOct | kRight, /*width = */ 6, "_____0"},
{0, kOct | kRight | kPos, /*width = */ 0, "0"},
{0, kOct | kRight | kPos, /*width = */ 6, "_____0"},
{0, kOct | kRight | kBase, /*width = */ 0, "0"},
{0, kOct | kRight | kBase, /*width = */ 6, "_____0"},
{0, kOct | kRight | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kRight | kBase | kPos, /*width = */ 6, "_____0"},
{0, kOct | kRight | kUpper, /*width = */ 0, "0"},
{0, kOct | kRight | kUpper, /*width = */ 6, "_____0"},
{0, kOct | kRight | kUpper | kPos, /*width = */ 0, "0"},
{0, kOct | kRight | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kOct | kRight | kUpper | kBase, /*width = */ 0, "0"},
{0, kOct | kRight | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kOct | kRight | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kOct | kRight | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kHex, /*width = */ 0, "0"},
{0, kHex, /*width = */ 6, "_____0"},
{0, kHex | kPos, /*width = */ 0, "0"},
{0, kHex | kPos, /*width = */ 6, "_____0"},
{0, kHex | kBase, /*width = */ 0, "0"},
{0, kHex | kBase, /*width = */ 6, "_____0"},
{0, kHex | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kBase | kPos, /*width = */ 6, "_____0"},
{0, kHex | kUpper, /*width = */ 0, "0"},
{0, kHex | kUpper, /*width = */ 6, "_____0"},
{0, kHex | kUpper | kPos, /*width = */ 0, "0"},
{0, kHex | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kHex | kUpper | kBase, /*width = */ 0, "0"},
{0, kHex | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kHex | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kHex | kLeft, /*width = */ 0, "0"},
{0, kHex | kLeft, /*width = */ 6, "0_____"},
{0, kHex | kLeft | kPos, /*width = */ 0, "0"},
{0, kHex | kLeft | kPos, /*width = */ 6, "0_____"},
{0, kHex | kLeft | kBase, /*width = */ 0, "0"},
{0, kHex | kLeft | kBase, /*width = */ 6, "0_____"},
{0, kHex | kLeft | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kLeft | kBase | kPos, /*width = */ 6, "0_____"},
{0, kHex | kLeft | kUpper, /*width = */ 0, "0"},
{0, kHex | kLeft | kUpper, /*width = */ 6, "0_____"},
{0, kHex | kLeft | kUpper | kPos, /*width = */ 0, "0"},
{0, kHex | kLeft | kUpper | kPos, /*width = */ 6, "0_____"},
{0, kHex | kLeft | kUpper | kBase, /*width = */ 0, "0"},
{0, kHex | kLeft | kUpper | kBase, /*width = */ 6, "0_____"},
{0, kHex | kLeft | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kLeft | kUpper | kBase | kPos, /*width = */ 6, "0_____"},
{0, kHex | kInt, /*width = */ 0, "0"},
{0, kHex | kInt, /*width = */ 6, "_____0"},
{0, kHex | kInt | kPos, /*width = */ 0, "0"},
{0, kHex | kInt | kPos, /*width = */ 6, "_____0"},
{0, kHex | kInt | kBase, /*width = */ 0, "0"},
{0, kHex | kInt | kBase, /*width = */ 6, "_____0"},
{0, kHex | kInt | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kInt | kBase | kPos, /*width = */ 6, "_____0"},
{0, kHex | kInt | kUpper, /*width = */ 0, "0"},
{0, kHex | kInt | kUpper, /*width = */ 6, "_____0"},
{0, kHex | kInt | kUpper | kPos, /*width = */ 0, "0"},
{0, kHex | kInt | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kHex | kInt | kUpper | kBase, /*width = */ 0, "0"},
{0, kHex | kInt | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kHex | kInt | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kInt | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{0, kHex | kRight, /*width = */ 0, "0"},
{0, kHex | kRight, /*width = */ 6, "_____0"},
{0, kHex | kRight | kPos, /*width = */ 0, "0"},
{0, kHex | kRight | kPos, /*width = */ 6, "_____0"},
{0, kHex | kRight | kBase, /*width = */ 0, "0"},
{0, kHex | kRight | kBase, /*width = */ 6, "_____0"},
{0, kHex | kRight | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kRight | kBase | kPos, /*width = */ 6, "_____0"},
{0, kHex | kRight | kUpper, /*width = */ 0, "0"},
{0, kHex | kRight | kUpper, /*width = */ 6, "_____0"},
{0, kHex | kRight | kUpper | kPos, /*width = */ 0, "0"},
{0, kHex | kRight | kUpper | kPos, /*width = */ 6, "_____0"},
{0, kHex | kRight | kUpper | kBase, /*width = */ 0, "0"},
{0, kHex | kRight | kUpper | kBase, /*width = */ 6, "_____0"},
{0, kHex | kRight | kUpper | kBase | kPos, /*width = */ 0, "0"},
{0, kHex | kRight | kUpper | kBase | kPos, /*width = */ 6, "_____0"},
{37, std::ios_base::fmtflags(), /*width = */ 0, "37"},
{37, std::ios_base::fmtflags(), /*width = */ 6, "____37"},
{37, kPos, /*width = */ 0, "37"},
{37, kPos, /*width = */ 6, "____37"},
{37, kBase, /*width = */ 0, "37"},
{37, kBase, /*width = */ 6, "____37"},
{37, kBase | kPos, /*width = */ 0, "37"},
{37, kBase | kPos, /*width = */ 6, "____37"},
{37, kUpper, /*width = */ 0, "37"},
{37, kUpper, /*width = */ 6, "____37"},
{37, kUpper | kPos, /*width = */ 0, "37"},
{37, kUpper | kPos, /*width = */ 6, "____37"},
{37, kUpper | kBase, /*width = */ 0, "37"},
{37, kUpper | kBase, /*width = */ 6, "____37"},
{37, kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kUpper | kBase | kPos, /*width = */ 6, "____37"},
{37, kLeft, /*width = */ 0, "37"},
{37, kLeft, /*width = */ 6, "37____"},
{37, kLeft | kPos, /*width = */ 0, "37"},
{37, kLeft | kPos, /*width = */ 6, "37____"},
{37, kLeft | kBase, /*width = */ 0, "37"},
{37, kLeft | kBase, /*width = */ 6, "37____"},
{37, kLeft | kBase | kPos, /*width = */ 0, "37"},
{37, kLeft | kBase | kPos, /*width = */ 6, "37____"},
{37, kLeft | kUpper, /*width = */ 0, "37"},
{37, kLeft | kUpper, /*width = */ 6, "37____"},
{37, kLeft | kUpper | kPos, /*width = */ 0, "37"},
{37, kLeft | kUpper | kPos, /*width = */ 6, "37____"},
{37, kLeft | kUpper | kBase, /*width = */ 0, "37"},
{37, kLeft | kUpper | kBase, /*width = */ 6, "37____"},
{37, kLeft | kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kLeft | kUpper | kBase | kPos, /*width = */ 6, "37____"},
{37, kInt, /*width = */ 0, "37"},
{37, kInt, /*width = */ 6, "____37"},
{37, kInt | kPos, /*width = */ 0, "37"},
{37, kInt | kPos, /*width = */ 6, "____37"},
{37, kInt | kBase, /*width = */ 0, "37"},
{37, kInt | kBase, /*width = */ 6, "____37"},
{37, kInt | kBase | kPos, /*width = */ 0, "37"},
{37, kInt | kBase | kPos, /*width = */ 6, "____37"},
{37, kInt | kUpper, /*width = */ 0, "37"},
{37, kInt | kUpper, /*width = */ 6, "____37"},
{37, kInt | kUpper | kPos, /*width = */ 0, "37"},
{37, kInt | kUpper | kPos, /*width = */ 6, "____37"},
{37, kInt | kUpper | kBase, /*width = */ 0, "37"},
{37, kInt | kUpper | kBase, /*width = */ 6, "____37"},
{37, kInt | kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kInt | kUpper | kBase | kPos, /*width = */ 6, "____37"},
{37, kRight, /*width = */ 0, "37"},
{37, kRight, /*width = */ 6, "____37"},
{37, kRight | kPos, /*width = */ 0, "37"},
{37, kRight | kPos, /*width = */ 6, "____37"},
{37, kRight | kBase, /*width = */ 0, "37"},
{37, kRight | kBase, /*width = */ 6, "____37"},
{37, kRight | kBase | kPos, /*width = */ 0, "37"},
{37, kRight | kBase | kPos, /*width = */ 6, "____37"},
{37, kRight | kUpper, /*width = */ 0, "37"},
{37, kRight | kUpper, /*width = */ 6, "____37"},
{37, kRight | kUpper | kPos, /*width = */ 0, "37"},
{37, kRight | kUpper | kPos, /*width = */ 6, "____37"},
{37, kRight | kUpper | kBase, /*width = */ 0, "37"},
{37, kRight | kUpper | kBase, /*width = */ 6, "____37"},
{37, kRight | kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kRight | kUpper | kBase | kPos, /*width = */ 6, "____37"},
{37, kDec, /*width = */ 0, "37"},
{37, kDec, /*width = */ 6, "____37"},
{37, kDec | kPos, /*width = */ 0, "37"},
{37, kDec | kPos, /*width = */ 6, "____37"},
{37, kDec | kBase, /*width = */ 0, "37"},
{37, kDec | kBase, /*width = */ 6, "____37"},
{37, kDec | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kBase | kPos, /*width = */ 6, "____37"},
{37, kDec | kUpper, /*width = */ 0, "37"},
{37, kDec | kUpper, /*width = */ 6, "____37"},
{37, kDec | kUpper | kPos, /*width = */ 0, "37"},
{37, kDec | kUpper | kPos, /*width = */ 6, "____37"},
{37, kDec | kUpper | kBase, /*width = */ 0, "37"},
{37, kDec | kUpper | kBase, /*width = */ 6, "____37"},
{37, kDec | kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kUpper | kBase | kPos, /*width = */ 6, "____37"},
{37, kDec | kLeft, /*width = */ 0, "37"},
{37, kDec | kLeft, /*width = */ 6, "37____"},
{37, kDec | kLeft | kPos, /*width = */ 0, "37"},
{37, kDec | kLeft | kPos, /*width = */ 6, "37____"},
{37, kDec | kLeft | kBase, /*width = */ 0, "37"},
{37, kDec | kLeft | kBase, /*width = */ 6, "37____"},
{37, kDec | kLeft | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kLeft | kBase | kPos, /*width = */ 6, "37____"},
{37, kDec | kLeft | kUpper, /*width = */ 0, "37"},
{37, kDec | kLeft | kUpper, /*width = */ 6, "37____"},
{37, kDec | kLeft | kUpper | kPos, /*width = */ 0, "37"},
{37, kDec | kLeft | kUpper | kPos, /*width = */ 6, "37____"},
{37, kDec | kLeft | kUpper | kBase, /*width = */ 0, "37"},
{37, kDec | kLeft | kUpper | kBase, /*width = */ 6, "37____"},
{37, kDec | kLeft | kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kLeft | kUpper | kBase | kPos, /*width = */ 6, "37____"},
{37, kDec | kInt, /*width = */ 0, "37"},
{37, kDec | kInt, /*width = */ 6, "____37"},
{37, kDec | kInt | kPos, /*width = */ 0, "37"},
{37, kDec | kInt | kPos, /*width = */ 6, "____37"},
{37, kDec | kInt | kBase, /*width = */ 0, "37"},
{37, kDec | kInt | kBase, /*width = */ 6, "____37"},
{37, kDec | kInt | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kInt | kBase | kPos, /*width = */ 6, "____37"},
{37, kDec | kInt | kUpper, /*width = */ 0, "37"},
{37, kDec | kInt | kUpper, /*width = */ 6, "____37"},
{37, kDec | kInt | kUpper | kPos, /*width = */ 0, "37"},
{37, kDec | kInt | kUpper | kPos, /*width = */ 6, "____37"},
{37, kDec | kInt | kUpper | kBase, /*width = */ 0, "37"},
{37, kDec | kInt | kUpper | kBase, /*width = */ 6, "____37"},
{37, kDec | kInt | kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kInt | kUpper | kBase | kPos, /*width = */ 6, "____37"},
{37, kDec | kRight, /*width = */ 0, "37"},
{37, kDec | kRight, /*width = */ 6, "____37"},
{37, kDec | kRight | kPos, /*width = */ 0, "37"},
{37, kDec | kRight | kPos, /*width = */ 6, "____37"},
{37, kDec | kRight | kBase, /*width = */ 0, "37"},
{37, kDec | kRight | kBase, /*width = */ 6, "____37"},
{37, kDec | kRight | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kRight | kBase | kPos, /*width = */ 6, "____37"},
{37, kDec | kRight | kUpper, /*width = */ 0, "37"},
{37, kDec | kRight | kUpper, /*width = */ 6, "____37"},
{37, kDec | kRight | kUpper | kPos, /*width = */ 0, "37"},
{37, kDec | kRight | kUpper | kPos, /*width = */ 6, "____37"},
{37, kDec | kRight | kUpper | kBase, /*width = */ 0, "37"},
{37, kDec | kRight | kUpper | kBase, /*width = */ 6, "____37"},
{37, kDec | kRight | kUpper | kBase | kPos, /*width = */ 0, "37"},
{37, kDec | kRight | kUpper | kBase | kPos, /*width = */ 6, "____37"},
{37, kOct, /*width = */ 0, "45"},
{37, kOct, /*width = */ 6, "____45"},
{37, kOct | kPos, /*width = */ 0, "45"},
{37, kOct | kPos, /*width = */ 6, "____45"},
{37, kOct | kBase, /*width = */ 0, "045"},
{37, kOct | kBase, /*width = */ 6, "___045"},
{37, kOct | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kBase | kPos, /*width = */ 6, "___045"},
{37, kOct | kUpper, /*width = */ 0, "45"},
{37, kOct | kUpper, /*width = */ 6, "____45"},
{37, kOct | kUpper | kPos, /*width = */ 0, "45"},
{37, kOct | kUpper | kPos, /*width = */ 6, "____45"},
{37, kOct | kUpper | kBase, /*width = */ 0, "045"},
{37, kOct | kUpper | kBase, /*width = */ 6, "___045"},
{37, kOct | kUpper | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kUpper | kBase | kPos, /*width = */ 6, "___045"},
{37, kOct | kLeft, /*width = */ 0, "45"},
{37, kOct | kLeft, /*width = */ 6, "45____"},
{37, kOct | kLeft | kPos, /*width = */ 0, "45"},
{37, kOct | kLeft | kPos, /*width = */ 6, "45____"},
{37, kOct | kLeft | kBase, /*width = */ 0, "045"},
{37, kOct | kLeft | kBase, /*width = */ 6, "045___"},
{37, kOct | kLeft | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kLeft | kBase | kPos, /*width = */ 6, "045___"},
{37, kOct | kLeft | kUpper, /*width = */ 0, "45"},
{37, kOct | kLeft | kUpper, /*width = */ 6, "45____"},
{37, kOct | kLeft | kUpper | kPos, /*width = */ 0, "45"},
{37, kOct | kLeft | kUpper | kPos, /*width = */ 6, "45____"},
{37, kOct | kLeft | kUpper | kBase, /*width = */ 0, "045"},
{37, kOct | kLeft | kUpper | kBase, /*width = */ 6, "045___"},
{37, kOct | kLeft | kUpper | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kLeft | kUpper | kBase | kPos, /*width = */ 6, "045___"},
{37, kOct | kInt, /*width = */ 0, "45"},
{37, kOct | kInt, /*width = */ 6, "____45"},
{37, kOct | kInt | kPos, /*width = */ 0, "45"},
{37, kOct | kInt | kPos, /*width = */ 6, "____45"},
{37, kOct | kInt | kBase, /*width = */ 0, "045"},
{37, kOct | kInt | kBase, /*width = */ 6, "___045"},
{37, kOct | kInt | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kInt | kBase | kPos, /*width = */ 6, "___045"},
{37, kOct | kInt | kUpper, /*width = */ 0, "45"},
{37, kOct | kInt | kUpper, /*width = */ 6, "____45"},
{37, kOct | kInt | kUpper | kPos, /*width = */ 0, "45"},
{37, kOct | kInt | kUpper | kPos, /*width = */ 6, "____45"},
{37, kOct | kInt | kUpper | kBase, /*width = */ 0, "045"},
{37, kOct | kInt | kUpper | kBase, /*width = */ 6, "___045"},
{37, kOct | kInt | kUpper | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kInt | kUpper | kBase | kPos, /*width = */ 6, "___045"},
{37, kOct | kRight, /*width = */ 0, "45"},
{37, kOct | kRight, /*width = */ 6, "____45"},
{37, kOct | kRight | kPos, /*width = */ 0, "45"},
{37, kOct | kRight | kPos, /*width = */ 6, "____45"},
{37, kOct | kRight | kBase, /*width = */ 0, "045"},
{37, kOct | kRight | kBase, /*width = */ 6, "___045"},
{37, kOct | kRight | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kRight | kBase | kPos, /*width = */ 6, "___045"},
{37, kOct | kRight | kUpper, /*width = */ 0, "45"},
{37, kOct | kRight | kUpper, /*width = */ 6, "____45"},
{37, kOct | kRight | kUpper | kPos, /*width = */ 0, "45"},
{37, kOct | kRight | kUpper | kPos, /*width = */ 6, "____45"},
{37, kOct | kRight | kUpper | kBase, /*width = */ 0, "045"},
{37, kOct | kRight | kUpper | kBase, /*width = */ 6, "___045"},
{37, kOct | kRight | kUpper | kBase | kPos, /*width = */ 0, "045"},
{37, kOct | kRight | kUpper | kBase | kPos, /*width = */ 6, "___045"},
{37, kHex, /*width = */ 0, "25"},
{37, kHex, /*width = */ 6, "____25"},
{37, kHex | kPos, /*width = */ 0, "25"},
{37, kHex | kPos, /*width = */ 6, "____25"},
{37, kHex | kBase, /*width = */ 0, "0x25"},
{37, kHex | kBase, /*width = */ 6, "__0x25"},
{37, kHex | kBase | kPos, /*width = */ 0, "0x25"},
{37, kHex | kBase | kPos, /*width = */ 6, "__0x25"},
{37, kHex | kUpper, /*width = */ 0, "25"},
{37, kHex | kUpper, /*width = */ 6, "____25"},
{37, kHex | kUpper | kPos, /*width = */ 0, "25"},
{37, kHex | kUpper | kPos, /*width = */ 6, "____25"},
{37, kHex | kUpper | kBase, /*width = */ 0, "0X25"},
{37, kHex | kUpper | kBase, /*width = */ 6, "__0X25"},
{37, kHex | kUpper | kBase | kPos, /*width = */ 0, "0X25"},
{37, kHex | kUpper | kBase | kPos, /*width = */ 6, "__0X25"},
{37, kHex | kLeft, /*width = */ 0, "25"},
{37, kHex | kLeft, /*width = */ 6, "25____"},
{37, kHex | kLeft | kPos, /*width = */ 0, "25"},
{37, kHex | kLeft | kPos, /*width = */ 6, "25____"},
{37, kHex | kLeft | kBase, /*width = */ 0, "0x25"},
{37, kHex | kLeft | kBase, /*width = */ 6, "0x25__"},
{37, kHex | kLeft | kBase | kPos, /*width = */ 0, "0x25"},
{37, kHex | kLeft | kBase | kPos, /*width = */ 6, "0x25__"},
{37, kHex | kLeft | kUpper, /*width = */ 0, "25"},
{37, kHex | kLeft | kUpper, /*width = */ 6, "25____"},
{37, kHex | kLeft | kUpper | kPos, /*width = */ 0, "25"},
{37, kHex | kLeft | kUpper | kPos, /*width = */ 6, "25____"},
{37, kHex | kLeft | kUpper | kBase, /*width = */ 0, "0X25"},
{37, kHex | kLeft | kUpper | kBase, /*width = */ 6, "0X25__"},
{37, kHex | kLeft | kUpper | kBase | kPos, /*width = */ 0, "0X25"},
{37, kHex | kLeft | kUpper | kBase | kPos, /*width = */ 6, "0X25__"},
{37, kHex | kInt, /*width = */ 0, "25"},
{37, kHex | kInt, /*width = */ 6, "____25"},
{37, kHex | kInt | kPos, /*width = */ 0, "25"},
{37, kHex | kInt | kPos, /*width = */ 6, "____25"},
{37, kHex | kInt | kBase, /*width = */ 0, "0x25"},
{37, kHex | kInt | kBase, /*width = */ 6, "0x__25"},
{37, kHex | kInt | kBase | kPos, /*width = */ 0, "0x25"},
{37, kHex | kInt | kBase | kPos, /*width = */ 6, "0x__25"},
{37, kHex | kInt | kUpper, /*width = */ 0, "25"},
{37, kHex | kInt | kUpper, /*width = */ 6, "____25"},
{37, kHex | kInt | kUpper | kPos, /*width = */ 0, "25"},
{37, kHex | kInt | kUpper | kPos, /*width = */ 6, "____25"},
{37, kHex | kInt | kUpper | kBase, /*width = */ 0, "0X25"},
{37, kHex | kInt | kUpper | kBase, /*width = */ 6, "0X__25"},
{37, kHex | kInt | kUpper | kBase | kPos, /*width = */ 0, "0X25"},
{37, kHex | kInt | kUpper | kBase | kPos, /*width = */ 6, "0X__25"},
{37, kHex | kRight, /*width = */ 0, "25"},
{37, kHex | kRight, /*width = */ 6, "____25"},
{37, kHex | kRight | kPos, /*width = */ 0, "25"},
{37, kHex | kRight | kPos, /*width = */ 6, "____25"},
{37, kHex | kRight | kBase, /*width = */ 0, "0x25"},
{37, kHex | kRight | kBase, /*width = */ 6, "__0x25"},
{37, kHex | kRight | kBase | kPos, /*width = */ 0, "0x25"},
{37, kHex | kRight | kBase | kPos, /*width = */ 6, "__0x25"},
{37, kHex | kRight | kUpper, /*width = */ 0, "25"},
{37, kHex | kRight | kUpper, /*width = */ 6, "____25"},
{37, kHex | kRight | kUpper | kPos, /*width = */ 0, "25"},
{37, kHex | kRight | kUpper | kPos, /*width = */ 6, "____25"},
{37, kHex | kRight | kUpper | kBase, /*width = */ 0, "0X25"},
{37, kHex | kRight | kUpper | kBase, /*width = */ 6, "__0X25"},
{37, kHex | kRight | kUpper | kBase | kPos, /*width = */ 0, "0X25"},
{37, kHex | kRight | kUpper | kBase | kPos, /*width = */ 6, "__0X25"}};
}
} // namespace

View File

@@ -0,0 +1,482 @@
// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/numeric/int128.h"
#include <algorithm>
#include <limits>
#include <random>
#include <type_traits>
#include <utility>
#include <vector>
#include "gtest/gtest.h"
#include "absl/base/internal/cycleclock.h"
#include "absl/hash/hash_testing.h"
#include "absl/meta/type_traits.h"
#if defined(_MSC_VER) && _MSC_VER == 1900
// Disable "unary minus operator applied to unsigned type" warnings in Microsoft
// Visual C++ 14 (2015).
#pragma warning(disable:4146)
#endif
namespace {
template <typename T>
class Uint128IntegerTraitsTest : public ::testing::Test {};
typedef ::testing::Types<bool, char, signed char, unsigned char, char16_t,
char32_t, wchar_t,
short, // NOLINT(runtime/int)
unsigned short, // NOLINT(runtime/int)
int, unsigned int,
long, // NOLINT(runtime/int)
unsigned long, // NOLINT(runtime/int)
long long, // NOLINT(runtime/int)
unsigned long long> // NOLINT(runtime/int)
IntegerTypes;
template <typename T>
class Uint128FloatTraitsTest : public ::testing::Test {};
typedef ::testing::Types<float, double, long double> FloatingPointTypes;
TYPED_TEST_SUITE(Uint128IntegerTraitsTest, IntegerTypes);
TYPED_TEST(Uint128IntegerTraitsTest, ConstructAssignTest) {
static_assert(std::is_constructible<absl::uint128, TypeParam>::value,
"absl::uint128 must be constructible from TypeParam");
static_assert(std::is_assignable<absl::uint128&, TypeParam>::value,
"absl::uint128 must be assignable from TypeParam");
static_assert(!std::is_assignable<TypeParam&, absl::uint128>::value,
"TypeParam must not be assignable from absl::uint128");
}
TYPED_TEST_SUITE(Uint128FloatTraitsTest, FloatingPointTypes);
TYPED_TEST(Uint128FloatTraitsTest, ConstructAssignTest) {
static_assert(std::is_constructible<absl::uint128, TypeParam>::value,
"absl::uint128 must be constructible from TypeParam");
static_assert(!std::is_assignable<absl::uint128&, TypeParam>::value,
"absl::uint128 must not be assignable from TypeParam");
static_assert(!std::is_assignable<TypeParam&, absl::uint128>::value,
"TypeParam must not be assignable from absl::uint128");
}
#ifdef ABSL_HAVE_INTRINSIC_INT128
// These type traits done separately as TYPED_TEST requires typeinfo, and not
// all platforms have this for __int128 even though they define the type.
TEST(Uint128, IntrinsicTypeTraitsTest) {
static_assert(std::is_constructible<absl::uint128, __int128>::value,
"absl::uint128 must be constructible from __int128");
static_assert(std::is_assignable<absl::uint128&, __int128>::value,
"absl::uint128 must be assignable from __int128");
static_assert(!std::is_assignable<__int128&, absl::uint128>::value,
"__int128 must not be assignable from absl::uint128");
static_assert(std::is_constructible<absl::uint128, unsigned __int128>::value,
"absl::uint128 must be constructible from unsigned __int128");
static_assert(std::is_assignable<absl::uint128&, unsigned __int128>::value,
"absl::uint128 must be assignable from unsigned __int128");
static_assert(!std::is_assignable<unsigned __int128&, absl::uint128>::value,
"unsigned __int128 must not be assignable from absl::uint128");
}
#endif // ABSL_HAVE_INTRINSIC_INT128
TEST(Uint128, TrivialTraitsTest) {
static_assert(absl::is_trivially_default_constructible<absl::uint128>::value,
"");
static_assert(absl::is_trivially_copy_constructible<absl::uint128>::value,
"");
static_assert(absl::is_trivially_copy_assignable<absl::uint128>::value, "");
static_assert(std::is_trivially_destructible<absl::uint128>::value, "");
}
TEST(Uint128, AllTests) {
absl::uint128 zero = 0;
absl::uint128 one = 1;
absl::uint128 one_2arg = absl::MakeUint128(0, 1);
absl::uint128 two = 2;
absl::uint128 three = 3;
absl::uint128 big = absl::MakeUint128(2000, 2);
absl::uint128 big_minus_one = absl::MakeUint128(2000, 1);
absl::uint128 bigger = absl::MakeUint128(2001, 1);
absl::uint128 biggest = absl::Uint128Max();
absl::uint128 high_low = absl::MakeUint128(1, 0);
absl::uint128 low_high =
absl::MakeUint128(0, std::numeric_limits<uint64_t>::max());
EXPECT_LT(one, two);
EXPECT_GT(two, one);
EXPECT_LT(one, big);
EXPECT_LT(one, big);
EXPECT_EQ(one, one_2arg);
EXPECT_NE(one, two);
EXPECT_GT(big, one);
EXPECT_GE(big, two);
EXPECT_GE(big, big_minus_one);
EXPECT_GT(big, big_minus_one);
EXPECT_LT(big_minus_one, big);
EXPECT_LE(big_minus_one, big);
EXPECT_NE(big_minus_one, big);
EXPECT_LT(big, biggest);
EXPECT_LE(big, biggest);
EXPECT_GT(biggest, big);
EXPECT_GE(biggest, big);
EXPECT_EQ(big, ~~big);
EXPECT_EQ(one, one | one);
EXPECT_EQ(big, big | big);
EXPECT_EQ(one, one | zero);
EXPECT_EQ(one, one & one);
EXPECT_EQ(big, big & big);
EXPECT_EQ(zero, one & zero);
EXPECT_EQ(zero, big & ~big);
EXPECT_EQ(zero, one ^ one);
EXPECT_EQ(zero, big ^ big);
EXPECT_EQ(one, one ^ zero);
// Shift operators.
EXPECT_EQ(big, big << 0);
EXPECT_EQ(big, big >> 0);
EXPECT_GT(big << 1, big);
EXPECT_LT(big >> 1, big);
EXPECT_EQ(big, (big << 10) >> 10);
EXPECT_EQ(big, (big >> 1) << 1);
EXPECT_EQ(one, (one << 80) >> 80);
EXPECT_EQ(zero, (one >> 80) << 80);
// Shift assignments.
absl::uint128 big_copy = big;
EXPECT_EQ(big << 0, big_copy <<= 0);
big_copy = big;
EXPECT_EQ(big >> 0, big_copy >>= 0);
big_copy = big;
EXPECT_EQ(big << 1, big_copy <<= 1);
big_copy = big;
EXPECT_EQ(big >> 1, big_copy >>= 1);
big_copy = big;
EXPECT_EQ(big << 10, big_copy <<= 10);
big_copy = big;
EXPECT_EQ(big >> 10, big_copy >>= 10);
big_copy = big;
EXPECT_EQ(big << 64, big_copy <<= 64);
big_copy = big;
EXPECT_EQ(big >> 64, big_copy >>= 64);
big_copy = big;
EXPECT_EQ(big << 73, big_copy <<= 73);
big_copy = big;
EXPECT_EQ(big >> 73, big_copy >>= 73);
EXPECT_EQ(absl::Uint128High64(biggest), std::numeric_limits<uint64_t>::max());
EXPECT_EQ(absl::Uint128Low64(biggest), std::numeric_limits<uint64_t>::max());
EXPECT_EQ(zero + one, one);
EXPECT_EQ(one + one, two);
EXPECT_EQ(big_minus_one + one, big);
EXPECT_EQ(one - one, zero);
EXPECT_EQ(one - zero, one);
EXPECT_EQ(zero - one, biggest);
EXPECT_EQ(big - big, zero);
EXPECT_EQ(big - one, big_minus_one);
EXPECT_EQ(big + std::numeric_limits<uint64_t>::max(), bigger);
EXPECT_EQ(biggest + 1, zero);
EXPECT_EQ(zero - 1, biggest);
EXPECT_EQ(high_low - one, low_high);
EXPECT_EQ(low_high + one, high_low);
EXPECT_EQ(absl::Uint128High64((absl::uint128(1) << 64) - 1), 0);
EXPECT_EQ(absl::Uint128Low64((absl::uint128(1) << 64) - 1),
std::numeric_limits<uint64_t>::max());
EXPECT_TRUE(!!one);
EXPECT_TRUE(!!high_low);
EXPECT_FALSE(!!zero);
EXPECT_FALSE(!one);
EXPECT_FALSE(!high_low);
EXPECT_TRUE(!zero);
EXPECT_TRUE(zero == 0); // NOLINT(readability/check)
EXPECT_FALSE(zero != 0); // NOLINT(readability/check)
EXPECT_FALSE(one == 0); // NOLINT(readability/check)
EXPECT_TRUE(one != 0); // NOLINT(readability/check)
EXPECT_FALSE(high_low == 0); // NOLINT(readability/check)
EXPECT_TRUE(high_low != 0); // NOLINT(readability/check)
absl::uint128 test = zero;
EXPECT_EQ(++test, one);
EXPECT_EQ(test, one);
EXPECT_EQ(test++, one);
EXPECT_EQ(test, two);
EXPECT_EQ(test -= 2, zero);
EXPECT_EQ(test, zero);
EXPECT_EQ(test += 2, two);
EXPECT_EQ(test, two);
EXPECT_EQ(--test, one);
EXPECT_EQ(test, one);
EXPECT_EQ(test--, one);
EXPECT_EQ(test, zero);
EXPECT_EQ(test |= three, three);
EXPECT_EQ(test &= one, one);
EXPECT_EQ(test ^= three, two);
EXPECT_EQ(test >>= 1, one);
EXPECT_EQ(test <<= 1, two);
EXPECT_EQ(big, -(-big));
EXPECT_EQ(two, -((-one) - 1));
EXPECT_EQ(absl::Uint128Max(), -one);
EXPECT_EQ(zero, -zero);
EXPECT_EQ(absl::Uint128Max(), absl::kuint128max);
}
TEST(Uint128, ConversionTests) {
EXPECT_TRUE(absl::MakeUint128(1, 0));
#ifdef ABSL_HAVE_INTRINSIC_INT128
unsigned __int128 intrinsic =
(static_cast<unsigned __int128>(0x3a5b76c209de76f6) << 64) +
0x1f25e1d63a2b46c5;
absl::uint128 custom =
absl::MakeUint128(0x3a5b76c209de76f6, 0x1f25e1d63a2b46c5);
EXPECT_EQ(custom, absl::uint128(intrinsic));
EXPECT_EQ(custom, absl::uint128(static_cast<__int128>(intrinsic)));
EXPECT_EQ(intrinsic, static_cast<unsigned __int128>(custom));
EXPECT_EQ(intrinsic, static_cast<__int128>(custom));
#endif // ABSL_HAVE_INTRINSIC_INT128
// verify that an integer greater than 2**64 that can be stored precisely
// inside a double is converted to a absl::uint128 without loss of
// information.
double precise_double = 0x530e * std::pow(2.0, 64.0) + 0xda74000000000000;
absl::uint128 from_precise_double(precise_double);
absl::uint128 from_precise_ints =
absl::MakeUint128(0x530e, 0xda74000000000000);
EXPECT_EQ(from_precise_double, from_precise_ints);
EXPECT_DOUBLE_EQ(static_cast<double>(from_precise_ints), precise_double);
double approx_double = 0xffffeeeeddddcccc * std::pow(2.0, 64.0) +
0xbbbbaaaa99998888;
absl::uint128 from_approx_double(approx_double);
EXPECT_DOUBLE_EQ(static_cast<double>(from_approx_double), approx_double);
double round_to_zero = 0.7;
double round_to_five = 5.8;
double round_to_nine = 9.3;
EXPECT_EQ(static_cast<absl::uint128>(round_to_zero), 0);
EXPECT_EQ(static_cast<absl::uint128>(round_to_five), 5);
EXPECT_EQ(static_cast<absl::uint128>(round_to_nine), 9);
absl::uint128 highest_precision_in_long_double =
~absl::uint128{} >> (128 - std::numeric_limits<long double>::digits);
EXPECT_EQ(highest_precision_in_long_double,
static_cast<absl::uint128>(
static_cast<long double>(highest_precision_in_long_double)));
// Apply a mask just to make sure all the bits are the right place.
const absl::uint128 arbitrary_mask =
absl::MakeUint128(0xa29f622677ded751, 0xf8ca66add076f468);
EXPECT_EQ(highest_precision_in_long_double & arbitrary_mask,
static_cast<absl::uint128>(static_cast<long double>(
highest_precision_in_long_double & arbitrary_mask)));
EXPECT_EQ(static_cast<absl::uint128>(-0.1L), 0);
}
TEST(Uint128, OperatorAssignReturnRef) {
absl::uint128 v(1);
(v += 4) -= 3;
EXPECT_EQ(2, v);
}
TEST(Uint128, Multiply) {
absl::uint128 a, b, c;
// Zero test.
a = 0;
b = 0;
c = a * b;
EXPECT_EQ(0, c);
// Max carries.
a = absl::uint128(0) - 1;
b = absl::uint128(0) - 1;
c = a * b;
EXPECT_EQ(1, c);
// Self-operation with max carries.
c = absl::uint128(0) - 1;
c *= c;
EXPECT_EQ(1, c);
// 1-bit x 1-bit.
for (int i = 0; i < 64; ++i) {
for (int j = 0; j < 64; ++j) {
a = absl::uint128(1) << i;
b = absl::uint128(1) << j;
c = a * b;
EXPECT_EQ(absl::uint128(1) << (i + j), c);
}
}
// Verified with dc.
a = absl::MakeUint128(0xffffeeeeddddcccc, 0xbbbbaaaa99998888);
b = absl::MakeUint128(0x7777666655554444, 0x3333222211110000);
c = a * b;
EXPECT_EQ(absl::MakeUint128(0x530EDA741C71D4C3, 0xBF25975319080000), c);
EXPECT_EQ(0, c - b * a);
EXPECT_EQ(a*a - b*b, (a+b) * (a-b));
// Verified with dc.
a = absl::MakeUint128(0x0123456789abcdef, 0xfedcba9876543210);
b = absl::MakeUint128(0x02468ace13579bdf, 0xfdb97531eca86420);
c = a * b;
EXPECT_EQ(absl::MakeUint128(0x97a87f4f261ba3f2, 0x342d0bbf48948200), c);
EXPECT_EQ(0, c - b * a);
EXPECT_EQ(a*a - b*b, (a+b) * (a-b));
}
TEST(Uint128, AliasTests) {
absl::uint128 x1 = absl::MakeUint128(1, 2);
absl::uint128 x2 = absl::MakeUint128(2, 4);
x1 += x1;
EXPECT_EQ(x2, x1);
absl::uint128 x3 = absl::MakeUint128(1, static_cast<uint64_t>(1) << 63);
absl::uint128 x4 = absl::MakeUint128(3, 0);
x3 += x3;
EXPECT_EQ(x4, x3);
}
TEST(Uint128, DivideAndMod) {
using std::swap;
// a := q * b + r
absl::uint128 a, b, q, r;
// Zero test.
a = 0;
b = 123;
q = a / b;
r = a % b;
EXPECT_EQ(0, q);
EXPECT_EQ(0, r);
a = absl::MakeUint128(0x530eda741c71d4c3, 0xbf25975319080000);
q = absl::MakeUint128(0x4de2cab081, 0x14c34ab4676e4bab);
b = absl::uint128(0x1110001);
r = absl::uint128(0x3eb455);
ASSERT_EQ(a, q * b + r); // Sanity-check.
absl::uint128 result_q, result_r;
result_q = a / b;
result_r = a % b;
EXPECT_EQ(q, result_q);
EXPECT_EQ(r, result_r);
// Try the other way around.
swap(q, b);
result_q = a / b;
result_r = a % b;
EXPECT_EQ(q, result_q);
EXPECT_EQ(r, result_r);
// Restore.
swap(b, q);
// Dividend < divisor; result should be q:0 r:<dividend>.
swap(a, b);
result_q = a / b;
result_r = a % b;
EXPECT_EQ(0, result_q);
EXPECT_EQ(a, result_r);
// Try the other way around.
swap(a, q);
result_q = a / b;
result_r = a % b;
EXPECT_EQ(0, result_q);
EXPECT_EQ(a, result_r);
// Restore.
swap(q, a);
swap(b, a);
// Try a large remainder.
b = a / 2 + 1;
absl::uint128 expected_r =
absl::MakeUint128(0x29876d3a0e38ea61, 0xdf92cba98c83ffff);
// Sanity checks.
ASSERT_EQ(a / 2 - 1, expected_r);
ASSERT_EQ(a, b + expected_r);
result_q = a / b;
result_r = a % b;
EXPECT_EQ(1, result_q);
EXPECT_EQ(expected_r, result_r);
}
TEST(Uint128, DivideAndModRandomInputs) {
const int kNumIters = 1 << 18;
std::minstd_rand random(testing::UnitTest::GetInstance()->random_seed());
std::uniform_int_distribution<uint64_t> uniform_uint64;
for (int i = 0; i < kNumIters; ++i) {
const absl::uint128 a =
absl::MakeUint128(uniform_uint64(random), uniform_uint64(random));
const absl::uint128 b =
absl::MakeUint128(uniform_uint64(random), uniform_uint64(random));
if (b == 0) {
continue; // Avoid a div-by-zero.
}
const absl::uint128 q = a / b;
const absl::uint128 r = a % b;
ASSERT_EQ(a, b * q + r);
}
}
TEST(Uint128, ConstexprTest) {
constexpr absl::uint128 zero = absl::uint128();
constexpr absl::uint128 one = 1;
constexpr absl::uint128 minus_two = -2;
EXPECT_EQ(zero, absl::uint128(0));
EXPECT_EQ(one, absl::uint128(1));
EXPECT_EQ(minus_two, absl::MakeUint128(-1, -2));
}
TEST(Uint128, NumericLimitsTest) {
static_assert(std::numeric_limits<absl::uint128>::is_specialized, "");
static_assert(!std::numeric_limits<absl::uint128>::is_signed, "");
static_assert(std::numeric_limits<absl::uint128>::is_integer, "");
EXPECT_EQ(static_cast<int>(128 * std::log10(2)),
std::numeric_limits<absl::uint128>::digits10);
EXPECT_EQ(0, std::numeric_limits<absl::uint128>::min());
EXPECT_EQ(0, std::numeric_limits<absl::uint128>::lowest());
EXPECT_EQ(absl::Uint128Max(), std::numeric_limits<absl::uint128>::max());
}
TEST(Uint128, Hash) {
EXPECT_TRUE(absl::VerifyTypeImplementsAbslHashCorrectly({
// Some simple values
absl::uint128{0},
absl::uint128{1},
~absl::uint128{},
// 64 bit limits
absl::uint128{std::numeric_limits<int64_t>::max()},
absl::uint128{std::numeric_limits<uint64_t>::max()} + 0,
absl::uint128{std::numeric_limits<uint64_t>::max()} + 1,
absl::uint128{std::numeric_limits<uint64_t>::max()} + 2,
// Keeping high same
absl::uint128{1} << 62,
absl::uint128{1} << 63,
// Keeping low same
absl::uint128{1} << 64,
absl::uint128{1} << 65,
// 128 bit limits
std::numeric_limits<absl::uint128>::max(),
std::numeric_limits<absl::uint128>::max() - 1,
std::numeric_limits<absl::uint128>::min() + 1,
std::numeric_limits<absl::uint128>::min(),
}));
}
} // namespace