61 lines
2.0 KiB
Factor
61 lines
2.0 KiB
Factor
! Copyright (C) 2003, 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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IN: math
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USING: errors generic kernel math-internals ;
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G: number= ( x y -- ? ) math-combination ; foldable
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M: object number= 2drop f ;
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G: < ( x y -- ? ) math-combination ; foldable
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G: <= ( x y -- ? ) math-combination ; foldable
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G: > ( x y -- ? ) math-combination ; foldable
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G: >= ( x y -- ? ) math-combination ; foldable
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G: + ( x y -- x+y ) math-combination ; foldable
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G: - ( x y -- x-y ) math-combination ; foldable
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G: * ( x y -- x*y ) math-combination ; foldable
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G: / ( x y -- x/y ) math-combination ; foldable
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G: /i ( x y -- x/y ) math-combination ; foldable
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G: /f ( x y -- x/y ) math-combination ; foldable
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G: mod ( x y -- x%y ) math-combination ; foldable
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G: /mod ( x y -- x/y x%y ) math-combination ; foldable
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G: bitand ( x y -- z ) math-combination ; foldable
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G: bitor ( x y -- z ) math-combination ; foldable
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G: bitxor ( x y -- z ) math-combination ; foldable
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G: shift ( x n -- y ) math-combination ; foldable
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GENERIC: bitnot ( n -- n ) foldable
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GENERIC: 1+ ( x -- x+1 ) foldable
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GENERIC: 1- ( x -- x-1 ) foldable
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GENERIC: truncate ( n -- n ) foldable
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GENERIC: floor ( n -- n ) foldable
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GENERIC: ceiling ( n -- n ) foldable
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GENERIC: abs ( z -- |z| ) foldable
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GENERIC: absq ( n -- |n|^2 ) foldable
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: sq dup * ; inline
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: neg 0 swap - ; inline
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: recip 1 swap / ; inline
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: max ( x y -- z ) [ > ] 2keep ? ; inline
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: min ( x y -- z ) [ < ] 2keep ? ; inline
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: between? ( x min max -- ? ) pick >= >r >= r> and ; inline
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: rem ( x y -- z ) tuck mod over + swap mod ; inline
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: sgn ( m -- n ) dup 0 < -1 0 ? swap 0 > 1 0 ? bitor ; foldable
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: align ( m w -- n ) 1- [ + ] keep bitnot bitand ; inline
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: (repeat) ( i n quot -- )
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pick pick >=
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[ 3drop ] [ [ swap >r call 1+ r> ] keep (repeat) ] if ;
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inline
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: repeat ( n quot -- | quot: n -- n ) 0 -rot (repeat) ; inline
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: times ( n quot -- | quot: -- )
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swap [ >r dup slip r> ] repeat drop ; inline
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GENERIC: number>string ( n -- str ) foldable
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