• + &rest numbers → sum

• number - a number.
• sum - a number.

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

(+) 

→

0 



(+ 1) 

→

1 



(+ 31/100 69/100) 

→

1 



(+ 1/5 0.8) 

→

1.0 

None.

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

• {\secref\NumericOperations}
• {\secref\RationalComputations}
• {\secref\FloatingPointComputations}
• {\secref\ComplexComputations}

None.