Factor Documentation | Home | Glossary |
factorcode.org
- ( x y -- z )
Factor documentation > Factor handbook > The language > Numbers > Arithmetic > Number protocol
Prev:+ ( x y -- z )
Next:* ( x y -- z )


Vocabulary
math

Inputs and outputs
xa number
ya number
za number


Word description
Subtracts y from x.
• Subtraction of fixnums may overflow and convert the result to a bignum.
• Subtraction of bignums always yields a bignum.
• 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* ;