1 USING: accessors arrays combinators fry inverse kernel math
2 math.functions sequences sets shuffle sorting splitting summary ;
5 TUPLE: dimensioned value top bot ;
7 ERROR: dimensions-not-equal ;
9 M: dimensions-not-equal summary drop "Dimensions do not match" ;
11 : remove-one ( seq obj -- seq )
12 1array split1 append ;
14 : 2remove-one ( seq seq obj -- seq seq )
15 [ remove-one ] curry bi@ ;
17 : symbolic-reduce ( seq seq -- seq seq )
19 [ first 2remove-one symbolic-reduce ] unless-empty ;
21 : <dimensioned> ( n top bot -- obj )
26 : >dimensioned< ( d -- n top bot )
27 [ bot>> ] [ top>> ] [ value>> ] tri ;
29 \ <dimensioned> [ [ dimensioned boa ] undo ] define-inverse
31 : dimensions ( dimensioned -- top bot )
32 [ top>> ] [ bot>> ] bi ;
34 : check-dimensions ( d d -- )
35 [ dimensions 2array ] same?
36 [ dimensions-not-equal ] unless ;
38 : 2values ( dim dim -- val val ) [ value>> ] bi@ ;
40 : <dimension-op ( dim dim -- top bot val val )
41 2dup check-dimensions dup dimensions 2swap 2values ;
43 : dimension-op> ( top bot val -- dim )
46 : d+ ( d d -- d ) <dimension-op + dimension-op> ;
48 : d- ( d d -- d ) <dimension-op - dimension-op> ;
51 { } { } <dimensioned> ;
54 [ dup number? [ scalar ] when ] bi@
55 [ [ top>> ] bi@ append ] 2keep
56 [ [ bot>> ] bi@ append ] 2keep
57 2values * dimension-op> ;
59 : d-neg ( d -- d ) -1 d* ;
61 : d-sq ( d -- d ) dup d* ;
63 : d-cube ( d -- d ) dup dup d* d* ;
66 >dimensioned< recip dimension-op> ;
68 : d/ ( d d -- d ) d-recip d* ;
70 ERROR: dimensioned-power-op-expects-integer d n ;
73 dup integer? [ dimensioned-power-op-expects-integer ] unless
75 { [ dup 0 > ] [ 1 - over '[ _ d* ] times ] }
76 { [ dup 0 < ] [ 1 - abs over '[ _ d/ ] times ] }
77 { [ dup 0 = ] [ 2drop 1 scalar ] }
80 : comparison-op ( d d -- n n ) 2dup check-dimensions 2values ;
82 : d< ( d d -- ? ) comparison-op < ;
84 : d<= ( d d -- ? ) comparison-op <= ;
86 : d> ( d d -- ? ) comparison-op > ;
88 : d>= ( d d -- ? ) comparison-op >= ;
90 : d= ( d d -- ? ) comparison-op number= ;
92 : d~ ( d d delta -- ? ) [ comparison-op ] dip ~ ;
94 : d-min ( d d -- d ) [ d< ] most ;
96 : d-max ( d d -- d ) [ d> ] most ;
98 : d-product ( v -- d ) 1 scalar [ d* ] reduce ;
100 : d-sum ( v -- d ) [ ] [ d+ ] map-reduce ;
102 : d-infimum ( v -- d ) [ ] [ d-min ] map-reduce ;
104 : d-supremum ( v -- d ) [ ] [ d-max ] map-reduce ;
106 \ d+ [ d- ] [ d- ] define-math-inverse
107 \ d- [ d+ ] [ d- ] define-math-inverse
108 \ d* [ d/ ] [ d/ ] define-math-inverse
109 \ d/ [ d* ] [ d/ ] define-math-inverse
110 \ d-recip [ d-recip ] define-inverse