Apropos

+Function

    Syntax

    + &rest numbers sum

    Arguments and Values

    number — a number.

    sum — a number.

    Description

    Returns the sum of numbers, performing any necessary type conversions in the process. If no numbers are supplied, 0 is returned.

    Examples
    (+)  0 
    (+ 1)  1 
    (+ 31/100 69/100)  1 
    (+ 1/5 0.8)  1.0
    Exceptional Situations

    Might signal type-error if some argument is not a number. Might signal arithmetic-error.

    See Also

    Section 12.1.1 (Numeric Operations), Section 12.1.3 (Rational Computations), Section 12.1.4 (Floating-point Computations), Section 12.1.5 (Complex Computations)