umath

Documentation

Overview

Package umath provides some useful unsigned math functions to prevent underflows.

Index

• func Subtract(a, b uint64) (uint64, bool)
• func SubtractOrZero(a, b uint64) uint64

Functions

func Subtract

func Subtract(a, b uint64) (uint64, bool)

Subtract returns a - b and true if a >= b, otherwise 0 and false.

func SubtractOrZero

func SubtractOrZero(a, b uint64) uint64

SubtractOrZero returns a - b if a >= b, otherwise 0. This is a convenience function for inline usage.