From d936052d32a5b7ca08b0199a6724724aea432309 Mon Sep 17 00:00:00 2001 From: Abseil Team Date: Mon, 9 Mar 2020 12:34:31 -0700 Subject: Export of internal Abseil changes -- 2c5c118f0615ba90e48ee2f18eccc9f511740f6d by Samuel Benzaquen : Rename internal macros to follow the convention in absl. PiperOrigin-RevId: 299906738 -- 92d84a707c7ebc4ec19bdd92d5765d1b6d218c1e by Derek Mauro : Import GitHub #629: Skip the .exe suffix in the helpshort filter on Windows PiperOrigin-RevId: 299892396 -- 2a6910d4be6c67a8376628764121b528ff53504d by Abseil Team : Use unsigned int128 intrinsic when available. It generates better branchless code. PiperOrigin-RevId: 299848585 -- 110c16cf0a739e1df5028fb6fbd03ef5dde1d278 by Derek Mauro : Import GitHub #594: Avoid reading the registry for Windows UWP apps PiperOrigin-RevId: 299821671 -- d8397d367e88163e5e8a47f379c716352dc91d03 by Greg Falcon : Add absl::Hash support for Cord. The hash function is heterogeneous with other string types: a Cord and a string with the same byte sequence will hash to the same value. SwissTable types know about Cord, and will allow heterogeneous lookup (e.g., you can pass a Cord to flat_hash_map::find(), and vice versa.) Add a missing dependency to the cmake Cord target. PiperOrigin-RevId: 299443713 GitOrigin-RevId: 2c5c118f0615ba90e48ee2f18eccc9f511740f6d Change-Id: I7b087c7984b0cb52c4b337d49266c467b98ebdf9 --- absl/numeric/int128.h | 31 ++++++++++++++++--------------- 1 file changed, 16 insertions(+), 15 deletions(-) (limited to 'absl/numeric') diff --git a/absl/numeric/int128.h b/absl/numeric/int128.h index 636e3a5b..0dd814a8 100644 --- a/absl/numeric/int128.h +++ b/absl/numeric/int128.h @@ -792,28 +792,21 @@ inline bool operator!=(uint128 lhs, uint128 rhs) { } inline bool operator<(uint128 lhs, uint128 rhs) { +#ifdef ABSL_HAVE_INTRINSIC_INT128 + return static_cast(lhs) < + static_cast(rhs); +#else return (Uint128High64(lhs) == Uint128High64(rhs)) ? (Uint128Low64(lhs) < Uint128Low64(rhs)) : (Uint128High64(lhs) < Uint128High64(rhs)); +#endif } -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 rhs < lhs; } -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 !(rhs < lhs); } -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 !(lhs < rhs); } // Unary operators. @@ -870,6 +863,9 @@ inline uint128& uint128::operator^=(uint128 other) { // Arithmetic operators. inline uint128 operator<<(uint128 lhs, int amount) { +#ifdef ABSL_HAVE_INTRINSIC_INT128 + return static_cast(lhs) << amount; +#else // uint64_t shifts of >= 64 are undefined, so we will need some // special-casing. if (amount < 64) { @@ -881,9 +877,13 @@ inline uint128 operator<<(uint128 lhs, int amount) { return lhs; } return MakeUint128(Uint128Low64(lhs) << (amount - 64), 0); +#endif } inline uint128 operator>>(uint128 lhs, int amount) { +#ifdef ABSL_HAVE_INTRINSIC_INT128 + return static_cast(lhs) >> amount; +#else // uint64_t shifts of >= 64 are undefined, so we will need some // special-casing. if (amount < 64) { @@ -895,6 +895,7 @@ inline uint128 operator>>(uint128 lhs, int amount) { return lhs; } return MakeUint128(0, Uint128High64(lhs) >> (amount - 64)); +#endif } inline uint128 operator+(uint128 lhs, uint128 rhs) { -- cgit v1.2.3