A function that rounds floats in Golang. Functionally equivalent to round() in Python 2 (rounds away from zero). Test it out here: https://play.golang.org/p/UpjhU7yXsc

round.go

package main

import (
	"math"
)

func roundFloat(num float64, precision float64) float64 {
	var power float64
	var mod float64
	var negative bool

	if num < 0 {
		negative = true
		num = -1 * num
	}
	power = math.Pow(10, precision)
	num = num * power
	mod = math.Mod(num, 1)
	num -= mod
	if mod >= .5 {
		num += 1
	}
	num = num / power
	if negative {
		num = -1 * num
	}
	return num
}