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Value-option

Value-optionp

Recognizer for value-option structures.

Signature
(value-optionp x) → *

Definitions and Theorems

Function: value-optionp

(defun value-optionp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'value-optionp))
    (declare (ignorable __function__))
    (cond ((not x) (b* nil t))
          (t (b* ((fty::val x))
               (valuep fty::val))))))