math

Documentation

Overview

Package math provides access to useful numeric functions available in Neo VM.

Index

• func Abs(a int) int
• func Max(a, b int) int
• func Min(a, b int) int
• func ModMul(a, b, mod int) int
• func ModPow(a, b, mod int) int
• func Pow(a, b int) int
• func Sign(a int) int
• func Sqrt(x int) int
• func Within(x, a, b int) bool

Functions

func Abs

func Abs(a int) int

Abs returns an absolute value of a.

func Max

func Max(a, b int) int

Max returns the maximum of a, b.

func Min

func Min(a, b int) int

Min returns the minimum of a, b.

func ModMul

func ModMul(a, b, mod int) int

ModMul returns the result of modulus division on a*b.

func ModPow

func ModPow(a, b, mod int) int

ModPow returns the result of modulus division on a^b. If b is -1, it returns the modular inverse of a.

func Pow

func Pow(a, b int) int

Pow returns a^b using POW VM opcode. b must be >= 0 and <= 2^31-1.

func Sign

func Sign(a int) int

Sign returns:

-1 if x <  0
 0 if x == 0
+1 if x >  0

func Sqrt

func Sqrt(x int) int

Sqrt returns a positive square root of x rounded down.

func Within

func Within(x, a, b int) bool

Within returns true if a <= x < b.