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Implementation-environments

Ienv->std

Numeric version of the C standard (regardless of GCC extensions).

Signature
(ienv->std ienv) → number
Arguments: ienv — Guard (ienvp ienv).
Returns: number — Type (posp number).

Definitions and Theorems

Function: ienv->std

(defun ienv->std (ienv)
  (declare (xargs :guard (ienvp ienv)))
  (b* (((ienv ienv) ienv))
    (cond ((c::version-std-c17p ienv.version) 17)
          ((c::version-std-c23p ienv.version)
           23))))

Theorem: posp-of-ienv->std

(defthm posp-of-ienv->std
  (b* ((number (ienv->std ienv)))
    (posp number))
  :rule-classes :rewrite)

Theorem: ienv->std-of-ienv-fix-ienv

(defthm ienv->std-of-ienv-fix-ienv
  (equal (ienv->std (ienv-fix ienv))
         (ienv->std ienv)))

Theorem: ienv->std-ienv-equiv-congruence-on-ienv

(defthm ienv->std-ienv-equiv-congruence-on-ienv
  (implies (ienv-equiv ienv ienv-equiv)
           (equal (ienv->std ienv)
                  (ienv->std ienv-equiv)))
  :rule-classes :congruence)