CLHS: Function +

#

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

Affected By: None.

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)

Notes: None.

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