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• Atj-java-primitive-array-model

Long-array-read

Read a component from a Java long array.

Signature

(long-array-read array index) → component

Arguments

array — Guard (long-arrayp array).

index — Guard (int-valuep index).

Returns

component — Type (long-valuep component).

Definitions and Theorems

Function: long-array-read

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

Theorem: long-valuep-of-long-array-read

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