uint128

Documentation

Overview

Package uint128 provides a basic unsigned 128 bit integer implementation.

Index

• func Add(a, b *Uint128)
• func Add64(a *Uint128, b uint64)
• func Hi(a *Uint128) uint64
• func Lo(a *Uint128) uint64
• func Mul64x64(out *Uint128, a, b uint64)
• func Shl(a *Uint128, shift uint64) uint64
• func Shr(a *Uint128, shift uint64) uint64
• type Uint128

Functions

func Add

func Add(a, b *Uint128)

Add sets `a` to the full 128 bit result of `a + b`.

func Add64

func Add64(a *Uint128, b uint64)

Add64 sets `a` to the full 128 bit result of `a + b`.

func Hi

func Hi(a *Uint128) uint64

Hi returns the high 64 bits of `a`.

func Lo

func Lo(a *Uint128) uint64

Lo returns the low 64 bits of `a`.

func Mul64x64

func Mul64x64(out *Uint128, a, b uint64)

Mul sets `out` to the full 128 bit result of `a * b`.

func Shl

func Shl(a *Uint128, shift uint64) uint64

Shl returns the high 64 bits of `a << shift`.

func Shr

func Shr(a *Uint128, shift uint64) uint64

Shr returns the low 64 bits of `a >> shift`.

Types

type Uint128

type Uint128 struct {
	// contains filtered or unexported fields
}

Uint128 is an unsigned 128 bit integer represented as 2 uint64 limbs.