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

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Vocabulary
math

Inputs

x	a number
y	a number

Outputs

z

a number

Word description
Subtracts y from x.

•	Subtraction of fixnums may overflow and convert the result to a bignum.
•	Integer subtraction yields a fixnum when the result fits, and a bignum otherwise.
•	Subtraction of floats always yields a float.
•	Subtraction 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* ;