block1.go

// This program demonstrates how to round numbers in golang

package main

import (
	"log"
	"math"
)

// func round(val float64) float64 {
// 	_, v := math.Modf(val)
// 	if math.Abs(v) >= .5 {
// 		if val >= 0 {
// 			return math.Ceil(val)
// 		}
// 		return math.Floor(val)
// 	}
// 	if val >= 0 {
// 		return math.Floor(val)
// 	}
// 	return math.Ceil(val)
// }

// If you just need to round it up to the nearest integer, this should be sufficient.
// Thanks to angch for the tips
func round(val float64) float64 {
        return math.Floor(val + 0.5)
}

func main() {
	log.Println(round(123.54))
	log.Println(round(-100.4))
	log.Println(round(-0.4))
	log.Println(round(-0.5))
	log.Println(round(0.5))
	log.Println(round(0.4))
}