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• Atj-java-primitive-array-model

Boolean-array-read

Read a component from a Java boolean array.

Signature

(boolean-array-read array index) → component

Arguments

array — Guard (boolean-arrayp array).

index — Guard (int-valuep index).

Returns

component — Type (boolean-valuep component).

Definitions and Theorems

Function: boolean-array-read

(defun boolean-array-read (array index)
  (declare (xargs :guard (and (boolean-arrayp array)
                              (int-valuep index))))
  (declare
       (xargs :guard (boolean-array-index-in-range-p array index)))
  (let ((__function__ 'boolean-array-read))
    (declare (ignorable __function__))
    (boolean-value-fix (nth (int-value->int index)
                            (boolean-array->components array)))))

Theorem: boolean-valuep-of-boolean-array-read

(defthm boolean-valuep-of-boolean-array-read
  (b* ((component (boolean-array-read array index)))
    (boolean-valuep component))
  :rule-classes :rewrite)