		Search-engine friendly clone of the ACL2 documentation.

Atj-java-primitive-array-model

Short-array-write

Write a component to a Java short array.

Signature
(short-array-write array index component) → new-array
Arguments: array — Guard (short-arrayp array).; index — Guard (int-valuep index).; component — Guard (short-valuep component).
Returns: new-array — Type (short-arrayp new-array).

Definitions and Theorems

Function: short-array-write

(defun short-array-write (array index component)
 (declare (xargs :guard (and (short-arrayp array)
                             (int-valuep index)
                             (short-valuep component))))
 (declare (xargs :guard (short-array-index-in-range-p array index)))
 (let ((__function__ 'short-array-write))
   (declare (ignorable __function__))
   (if (mbt (short-array-index-in-range-p array index))
       (short-array (update-nth (int-value->int index)
                                component
                                (short-array->components array)))
     (short-array-fix array))))

Theorem: short-arrayp-of-short-array-write

(defthm short-arrayp-of-short-array-write
  (b* ((new-array (short-array-write array index component)))
    (short-arrayp new-array))
  :rule-classes :rewrite)

Theorem: len-of-components-of-short-array-write

(defthm len-of-components-of-short-array-write
  (b* ((?new-array (short-array-write array index component)))
    (equal (len (short-array->components new-array))
           (len (short-array->components array)))))

Theorem: short-array-index-in-range-p-of-short-array-write

(defthm short-array-index-in-range-p-of-short-array-write
  (b* ((?new-array (short-array-write array index component)))
    (equal (short-array-index-in-range-p new-array index1)
           (short-array-index-in-range-p array index1))))