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Representation-of-integer-operations

Ge-schar-uint

Greater-than-or-equal-to relation of a value of type signed char and a value of type unsigned int [C:6.5.8].

Definitions and Theorems

Function: ge-schar-uint

(defun ge-schar-uint (x y)
  (declare (xargs :guard (and (scharp x) (uintp y))))
  (ge-uint-uint (uint-from-schar x) y))

Theorem: sintp-of-ge-schar-uint

(defthm sintp-of-ge-schar-uint
  (sintp (ge-schar-uint x y)))

Theorem: ge-schar-uint-of-schar-fix-x

(defthm ge-schar-uint-of-schar-fix-x
  (equal (ge-schar-uint (schar-fix x) y)
         (ge-schar-uint x y)))

Theorem: ge-schar-uint-schar-equiv-congruence-on-x

(defthm ge-schar-uint-schar-equiv-congruence-on-x
  (implies (schar-equiv x x-equiv)
           (equal (ge-schar-uint x y)
                  (ge-schar-uint x-equiv y)))
  :rule-classes :congruence)

Theorem: ge-schar-uint-of-uint-fix-y

(defthm ge-schar-uint-of-uint-fix-y
  (equal (ge-schar-uint x (uint-fix y))
         (ge-schar-uint x y)))

Theorem: ge-schar-uint-uint-equiv-congruence-on-y

(defthm ge-schar-uint-uint-equiv-congruence-on-y
  (implies (uint-equiv y y-equiv)
           (equal (ge-schar-uint x y)
                  (ge-schar-uint x y-equiv)))
  :rule-classes :congruence)