[code=golang]
func NumberFormat(number float64, decimals uint, decPoint, thousandsSep string) string {
	neg := false
	if number < 0 {
		number = -number
		neg = true
	}
	dec := int(decimals)
	// Will round off
	str := fmt.Sprintf("%."+strconv.Itoa(dec)+"F", number)
	prefix, suffix := "", ""
	if dec > 0 {
		prefix = str[:len(str)-(dec+1)]
		suffix = str[len(str)-dec:]
	} else {
		prefix = str
	}
	sep := []byte(thousandsSep)
	n, l1, l2 := 0, len(prefix), len(sep)
	// thousands sep num
	c := (l1 - 1) / 3
	tmp := make([]byte, l2*c+l1)
	pos := len(tmp) - 1
	for i := l1 - 1; i >= 0; i, n, pos = i-1, n+1, pos-1 {
		if l2 > 0 && n > 0 && n%3 == 0 {
			for j := range sep {
				tmp[pos] = sep[l2-j-1]
				pos--
			}
		}
		tmp[pos] = prefix[i]
	}
	s := string(tmp)
	if dec > 0 {
		s += decPoint + suffix
	}
	if neg {
		s = "-" + s
	}

	return s
}
[/code]