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| author |  dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> | 2024-03-04 09:42:11 +0000 |
|---|---|---|
| committer |  GitHub <noreply@github.com> | 2024-03-04 09:42:11 +0000 |
| commit | adb4cdcf6c9eacd369eaaf5b21774b198d57c040 (patch) | |
| tree | a4f9c8fe2ce147fa952bcb795690afb9bb2affcb /vendor/lukechampine.com/uint128/README.md | |
| parent | [bugfix] update postgresqlstmt to correctly use postgres err hook (#2711) (diff) | |
| download | gotosocial-adb4cdcf6c9eacd369eaaf5b21774b198d57c040.tar.xz | |
[chore]: Bump modernc.org/sqlite from 1.28.0 to 1.29.2 (#2718)
Diffstat (limited to 'vendor/lukechampine.com/uint128/README.md')
| -rw-r--r-- | vendor/lukechampine.com/uint128/README.md | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/vendor/lukechampine.com/uint128/README.md b/vendor/lukechampine.com/uint128/README.md deleted file mode 100644 index 1ea5d7df1..000000000 --- a/vendor/lukechampine.com/uint128/README.md +++ /dev/null @@ -1,46 +0,0 @@ -uint128 -------- - -[](https://godoc.org/github.com/lukechampine/uint128) -[](https://goreportcard.com/report/github.com/lukechampine/uint128) - -``` -go get lukechampine.com/uint128 -``` - -`uint128` provides a high-performance `Uint128` type that supports standard arithmetic -operations. Unlike `math/big`, operations on `Uint128` values always produce new values -instead of modifying a pointer receiver. A `Uint128` value is therefore immutable, just -like `uint64` and friends. - -The name `uint128.Uint128` stutters, so I recommend either using a "dot import" -or aliasing `uint128.Uint128` to give it a project-specific name. Embedding the type -is not recommended, because methods will still return `uint128.Uint128`; this means that, -if you want to extend the type with new methods, your best bet is probably to copy the -source code wholesale and rename the identifier. ¯\\\_(ツ)\_/¯ - - -# Benchmarks - -Addition, multiplication, and subtraction are on par with their native 64-bit -equivalents. Division is slower: ~20x slower when dividing a `Uint128` by a -`uint64`, and ~100x slower when dividing by a `Uint128`. However, division is -still faster than with `big.Int` (for the same operands), especially when -dividing by a `uint64`. - -``` -BenchmarkArithmetic/Add-4 2000000000 0.45 ns/op 0 B/op 0 allocs/op -BenchmarkArithmetic/Sub-4 2000000000 0.67 ns/op 0 B/op 0 allocs/op -BenchmarkArithmetic/Mul-4 2000000000 0.42 ns/op 0 B/op 0 allocs/op -BenchmarkArithmetic/Lsh-4 2000000000 1.06 ns/op 0 B/op 0 allocs/op -BenchmarkArithmetic/Rsh-4 2000000000 1.06 ns/op 0 B/op 0 allocs/op - -BenchmarkDivision/native_64/64-4 2000000000 0.39 ns/op 0 B/op 0 allocs/op -BenchmarkDivision/Div_128/64-4 2000000000 6.28 ns/op 0 B/op 0 allocs/op -BenchmarkDivision/Div_128/128-4 30000000 45.2 ns/op 0 B/op 0 allocs/op -BenchmarkDivision/big.Int_128/64-4 20000000 98.2 ns/op 8 B/op 1 allocs/op -BenchmarkDivision/big.Int_128/128-4 30000000 53.4 ns/op 48 B/op 1 allocs/op - -BenchmarkString/Uint128-4 10000000 173 ns/op 48 B/op 1 allocs/op -BenchmarkString/big.Int-4 5000000 350 ns/op 144 B/op 3 allocs/op -``` |