+

+ 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)

Expanded Reference: +

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(+ )

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Expanded Reference: +​

Expanded Reference: +