func (b *base57) numToString(number *big.Int, padToLen int) string {
	var (
		out   string
		digit *big.Int
	)

	for number.Uint64() > 0 {
		number, digit = new(big.Int).DivMod(number, big.NewInt(b.alphabet.Length()), new(big.Int))
		out += b.alphabet.chars[digit.Int64()]
	}

	if padToLen > 0 {
		remainder := math.Max(float64(padToLen-len(out)), 0)
		out = out + strings.Repeat(b.alphabet.chars[0], int(remainder))
	}

	return out
}
func (b *base57) numToString(number *big.Int, padToLen int) string {
	var (
		out   string
		digit *big.Int
	)

	for number.Uint64() > 0 {
		number, digit = new(big.Int).DivMod(number, big.NewInt(b.alphabet.Length()), new(big.Int))
		out += b.alphabet.chars[digit.Int64()]
	}

	if padToLen > 0 {
		remainder := math.Max(float64(padToLen-len(out)), 0)
		out = out + strings.Repeat(b.alphabet.chars[0], int(remainder))
	}

	return out
}
func ( b * base57 ) numToString ( number * big . Int , padToLen int ) string { var ( out string digit * big . Int ) for number . Uint64 ( ) > 0 { number , digit = new ( big . Int ) . DivMod ( number , big . NewInt ( b . alphabet . Length ( ) ) , new ( big . Int ) ) out += b . alphabet . chars [ digit . Int64 ( ) ] } if padToLen > 0 { remainder := math . Max ( float64 ( padToLen - len ( out ) ) , 0 ) out = out + strings . Repeat ( b . alphabet . chars [ 0 ] , int ( remainder ) ) } return out }
// numToString converts a number a string using the given alpabet.
numToString converts a number a string using the given alpabet .