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Fix array-inner-product, fail fast for empty arrays.

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Closes #982.
This commit is contained in:
Alex Shinn 2024-05-29 21:42:20 +09:00
parent 648f6b9de6
commit 832d82c494
2 changed files with 30 additions and 2 deletions
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18
lib/srfi/231/test.sld
View file

@ -3583,7 +3583,23 @@
(myarray= (apply array-outer-product append arrays)
(make-array (apply my-interval-cartesian-product
(map array-domain arrays))
list))))))
list)))))
(test '((((0 0) (0 0)) ((0 0) (0 1)) ((0 0) (0 2)) ((0 0) (0 3)))
(((1 0) (0 0)) ((1 0) (0 1)) ((1 0) (0 2)) ((1 0) (0 3)))
(((2 0) (0 0)) ((2 0) (0 1)) ((2 0) (0 2)) ((2 0) (0 3)))
(((3 0) (0 0)) ((3 0) (0 1)) ((3 0) (0 2)) ((3 0) (0 3))))
(array->list*
(array-inner-product (make-array (make-interval '#(4 1)) list)
list
list
(make-array (make-interval '#(1 4)) list))))
(test-error
(array-inner-product (make-array (make-interval '#(4 0)) list)
list
list
(make-array (make-interval '#(0 4)) list))))
(test-group "reshape tests"
(specialized-array-default-safe? #t)

14
lib/srfi/231/transforms.scm
View file

@ -325,11 +325,23 @@
(apply getter2 (drop multi-index dim1)))))))
(define (array-inner-product A f g B)
(assert (and (array? A) (array? B)
(procedure? f) (procedure? g)
(positive? (array-dimension A))
(positive? (array-dimension B))
(let ((A-dim (array-dimension A))
(A-dom (array-domain A))
(B-dom (array-domain B)))
(and (not (zero? (interval-width B-dom 0)))
(eqv? (interval-lower-bound A-dom (- A-dim 1))
(interval-lower-bound B-dom 0))
(eqv? (interval-upper-bound A-dom (- A-dim 1))
(interval-upper-bound B-dom 0))))))
(array-outer-product
(lambda (a b) (array-reduce f (array-map g a b)))
(array-copy (array-curry A 1))
(array-copy
(array-curry (array-permute B (index-rotate (array-dimension B) 1))))))
(array-curry (array-permute B (index-rotate (array-dimension B) 1)) 1))))
(define (same-dimensions? ls)
(or (null? ls)