nyamath

README

nyamath

This repository holds a package including some functions for mathmatics.

Download / Install

The easiest way to install is to run go get -u github.com/catsworld/nyamath. You can also manually git clone the repository to $GOPATH/src/catsworld/nyamath.

Documentation

Overview

Package nyamath includes some functions for mathmatics.

Index

• func Calculate(x int64, operator string, y int64) (int64, error)
• func CalculateU(unary string, x int64) (int64, error)
• func IsNumber(r rune) bool
• func IsUnary(operator string) bool
• func Priority(operator string) int
• func Qpow(x, y int64) int64
• func Valid(operator string) bool
• type Expression
  • func New(s string) (Expression, error)
  • func (e Expression) Result() int64

Functions

func Calculate

func Calculate(x int64, operator string, y int64) (int64, error)

Calculate returns the result of calculating x and y with the operator.

func CalculateU

func CalculateU(unary string, x int64) (int64, error)

CalculateU returns the result of calculating a with the unary.

func IsNumber

func IsNumber(r rune) bool

IsNumber checks if a rune is in ['0'..'9']

func IsUnary

func IsUnary(operator string) bool

IsUnary checks if the operator is an unary.

func Priority

func Priority(operator string) int

Priority returns the priority of the operator.

func Qpow

func Qpow(x, y int64) int64

Qpow calculates x^y and returns the result with the quick pow algorithm.

func Valid

func Valid(operator string) bool

Valid checks if the operator is a valid operator.

Types

type Expression

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

Expression stores the infix, sufix and result of a math expression.

func New

func New(s string) (Expression, error)

New generates a expression from the string s.

func (Expression) Result

func (e Expression) Result() int64

Result returns the result of the expression e.