Merge new upstream LTS 20230802.0

1 files changed, 36 insertions, 39 deletions

diff --git a/absl/numeric/int128.h b/absl/numeric/int128.h
index 7a899eec..7530a793 100644
--- a/absl/numeric/int128.h
+++ b/absl/numeric/int128.h
@@ -32,6 +32,7 @@
 #include <cstring>
 #include <iosfwd>
 #include <limits>
+#include <string>
 #include <utility>
 
 #include "absl/base/config.h"
@@ -119,8 +120,8 @@ class
 #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
-  constexpr uint128(int128 v);  // NOLINT(runtime/explicit)
+#endif                                     // ABSL_HAVE_INTRINSIC_INT128
+  constexpr uint128(int128 v);             // NOLINT(runtime/explicit)
   explicit uint128(float v);
   explicit uint128(double v);
   explicit uint128(long double v);
@@ -217,9 +218,17 @@ class
     return H::combine(std::move(h), Uint128High64(v), Uint128Low64(v));
   }
 
+  // Support for absl::StrCat() etc.
+  template <typename Sink>
+  friend void AbslStringify(Sink& sink, uint128 v) {
+    sink.Append(v.ToString());
+  }
+
  private:
   constexpr uint128(uint64_t high, uint64_t low);
 
+  std::string ToString() const;
+
   // 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
@@ -286,9 +295,9 @@ class numeric_limits<absl::uint128> {
 #endif  // ABSL_HAVE_INTRINSIC_INT128
   static constexpr bool tinyness_before = false;
 
-  static constexpr absl::uint128 (min)() { return 0; }
+  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(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; }
@@ -454,9 +463,17 @@ class int128 {
     return H::combine(std::move(h), Int128High64(v), Int128Low64(v));
   }
 
+  // Support for absl::StrCat() etc.
+  template <typename Sink>
+  friend void AbslStringify(Sink& sink, int128 v) {
+    sink.Append(v.ToString());
+  }
+
  private:
   constexpr int128(int64_t high, uint64_t low);
 
+  std::string ToString() const;
+
 #if defined(ABSL_HAVE_INTRINSIC_INT128)
   __int128 v_;
 #else  // ABSL_HAVE_INTRINSIC_INT128
@@ -521,9 +538,9 @@ class numeric_limits<absl::int128> {
 #endif  // ABSL_HAVE_INTRINSIC_INT128
   static constexpr bool tinyness_before = false;
 
-  static constexpr absl::int128 (min)() { return absl::Int128Min(); }
+  static constexpr absl::int128(min)() { return absl::Int128Min(); }
   static constexpr absl::int128 lowest() { return absl::Int128Min(); }
-  static constexpr absl::int128 (max)() { return absl::Int128Max(); }
+  static constexpr absl::int128(max)() { return absl::Int128Max(); }
   static constexpr absl::int128 epsilon() { return 0; }
   static constexpr absl::int128 round_error() { return 0; }
   static constexpr absl::int128 infinity() { return 0; }
@@ -561,9 +578,7 @@ inline uint128& uint128::operator=(unsigned long v) {
 }
 
 // NOLINTNEXTLINE(runtime/int)
-inline uint128& uint128::operator=(long long v) {
-  return *this = uint128(v);
-}
+inline uint128& uint128::operator=(long long v) { return *this = uint128(v); }
 
 // NOLINTNEXTLINE(runtime/int)
 inline uint128& uint128::operator=(unsigned long long v) {
@@ -571,18 +586,14 @@ inline uint128& uint128::operator=(unsigned long long v) {
 }
 
 #ifdef ABSL_HAVE_INTRINSIC_INT128
-inline uint128& uint128::operator=(__int128 v) {
-  return *this = uint128(v);
-}
+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
 
-inline uint128& uint128::operator=(int128 v) {
-  return *this = uint128(v);
-}
+inline uint128& uint128::operator=(int128 v) { return *this = uint128(v); }
 
 // Arithmetic operators.
 
@@ -637,8 +648,7 @@ constexpr uint64_t Uint128High64(uint128 v) { return v.hi_; }
 
 #if defined(ABSL_IS_LITTLE_ENDIAN)
 
-constexpr uint128::uint128(uint64_t high, uint64_t low)
-    : lo_{low}, hi_{high} {}
+constexpr uint128::uint128(uint64_t high, uint64_t low) : lo_{low}, hi_{high} {}
 
 constexpr uint128::uint128(int v)
     : lo_{static_cast<uint64_t>(v)},
@@ -670,8 +680,7 @@ constexpr uint128::uint128(int128 v)
 
 #elif defined(ABSL_IS_BIG_ENDIAN)
 
-constexpr uint128::uint128(uint64_t high, uint64_t low)
-    : hi_{high}, lo_{low} {}
+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},
@@ -817,13 +826,9 @@ constexpr bool operator>=(uint128 lhs, uint128 rhs) { return !(lhs < rhs); }
 
 // Unary operators.
 
-constexpr inline uint128 operator+(uint128 val) {
-  return val;
-}
+constexpr inline uint128 operator+(uint128 val) { return val; }
 
-constexpr inline int128 operator+(int128 val) {
-  return val;
-}
+constexpr inline int128 operator+(int128 val) { return val; }
 
 constexpr uint128 operator-(uint128 val) {
 #if defined(ABSL_HAVE_INTRINSIC_INT128)
@@ -906,7 +911,7 @@ constexpr uint128 operator<<(uint128 lhs, int amount) {
 #else
   // uint64_t shifts of >= 64 are undefined, so we will need some
   // special-casing.
-  return amount >= 64 ? MakeUint128(Uint128Low64(lhs) << (amount - 64), 0)
+  return amount >= 64  ? MakeUint128(Uint128Low64(lhs) << (amount - 64), 0)
          : amount == 0 ? lhs
                        : MakeUint128((Uint128High64(lhs) << amount) |
                                          (Uint128Low64(lhs) >> (64 - amount)),
@@ -920,7 +925,7 @@ constexpr uint128 operator>>(uint128 lhs, int amount) {
 #else
   // uint64_t shifts of >= 64 are undefined, so we will need some
   // special-casing.
-  return amount >= 64 ? MakeUint128(0, Uint128High64(lhs) >> (amount - 64))
+  return amount >= 64  ? MakeUint128(0, Uint128High64(lhs) >> (amount - 64))
          : amount == 0 ? lhs
                        : MakeUint128(Uint128High64(lhs) >> amount,
                                      (Uint128Low64(lhs) >> amount) |
@@ -1042,27 +1047,19 @@ constexpr int128 MakeInt128(int64_t high, uint64_t low) {
 }
 
 // Assignment from integer types.
-inline int128& int128::operator=(int v) {
-  return *this = int128(v);
-}
+inline int128& int128::operator=(int v) { return *this = int128(v); }
 
-inline int128& int128::operator=(unsigned int v) {
-  return *this = int128(v);
-}
+inline int128& int128::operator=(unsigned int v) { return *this = int128(v); }
 
 inline int128& int128::operator=(long v) {  // NOLINT(runtime/int)
   return *this = int128(v);
 }
 
 // NOLINTNEXTLINE(runtime/int)
-inline int128& int128::operator=(unsigned long v) {
-  return *this = int128(v);
-}
+inline int128& int128::operator=(unsigned long v) { return *this = int128(v); }
 
 // NOLINTNEXTLINE(runtime/int)
-inline int128& int128::operator=(long long v) {
-  return *this = int128(v);
-}
+inline int128& int128::operator=(long long v) { return *this = int128(v); }
 
 // NOLINTNEXTLINE(runtime/int)
 inline int128& int128::operator=(unsigned long long v) {