quantity

var (
	// ErrSyntax reports a spelling that is not a number followed by one known
	// scale: a bad shape, an unknown suffix, or a suffix and an exponent at
	// the same time.
	ErrSyntax = errors.New("invalid quantity syntax")
	// ErrFraction reports a spelling whose value is not a whole number, such
	// as "1.2345k" (1234.5) or a bare "1.5".
	ErrFraction = errors.New("quantity is not a whole number")
	// ErrRange reports a value that does not fit in an int.
	ErrRange = errors.New("quantity out of range")
)