array-in-bounds-p
array &rest subscripts => generalized-boolean
array--an array.
subscripts--a list of integers of length equal to the rank of the array.
generalized-boolean--a generalized boolean.
Returns true if the subscripts are all in bounds for array; otherwise returns false. (If array is a vector with a fill pointer, that fill pointer is ignored.)
(setq a (make-array '(7 11) :element-type 'string-char)) (array-in-bounds-p a 0 0) => true (array-in-bounds-p a 6 10) => true (array-in-bounds-p a 0 -1) => false (array-in-bounds-p a 0 11) => false (array-in-bounds-p a 7 0) => false
(array-in-bounds-p array subscripts) == (and (not (some #'minusp (list subscripts))) (every #'< (list subscripts) (array-dimensions array)))