		Search-engine friendly clone of the ACL2 documentation.

Representation-of-integer-conversions

Uchar-from-sint

Convert from type signed int to type unsigned char.

Signature
(uchar-from-sint x) → result
Arguments: x — Guard (sintp x).
Returns: result — Type (ucharp result).

Definitions and Theorems

Function: uchar-from-sint

(defun uchar-from-sint (x)
  (declare (xargs :guard (sintp x)))
  (let ((__function__ 'uchar-from-sint))
    (declare (ignorable __function__))
    (uchar-from-integer-mod (integer-from-sint x))))

Theorem: ucharp-of-uchar-from-sint

(defthm ucharp-of-uchar-from-sint
  (b* ((result (uchar-from-sint x)))
    (ucharp result))
  :rule-classes :rewrite)

Theorem: uchar-from-sint-of-sint-fix-x

(defthm uchar-from-sint-of-sint-fix-x
  (equal (uchar-from-sint (sint-fix x))
         (uchar-from-sint x)))

Theorem: uchar-from-sint-sint-equiv-congruence-on-x

(defthm uchar-from-sint-sint-equiv-congruence-on-x
  (implies (sint-equiv x x-equiv)
           (equal (uchar-from-sint x)
                  (uchar-from-sint x-equiv)))
  :rule-classes :congruence)