+ ( x y -- z )
Factor handbook » The language » Numbers » Arithmetic » Number protocol

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- ( x y -- z )

Vocabulary
math

Inputs

x	a number
y	a number

Outputs

z

a number

Word description
Adds two numbers.

•	Addition of fixnums may overflow and convert the result to a bignum.
•	Integer addition yields a fixnum when the result fits, and a bignum otherwise.
•	Addition of floats always yields a float.
•	Addition of ratios and complex numbers proceeds using the relevant mathematical rules.

Definition

IN: math

MATH: + ( x y -- z ) foldable flushable

Methods

USING: math math.private ;

M: bignum + bignum+ ; inline


USING: math math.complex.private ;

M: complex + [ + ] complex-op ; inline


USING: math math.private ;

M: fixnum + fixnum+ ; inline


USING: math math.private ;

M: float + float+ ; inline


USING: kernel math math.ratios.private ;

M: ratio + scale+d [ + ] [ / ] bi* ;