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Utilities

Pos-listp

(pos-listp x) recognizes lists where every element satisfies posp.

Signature
(pos-listp x) → std::bool

This is an ordinary deflist. It is "loose" in that it does not care whether x is nil-terminated.

Definitions and Theorems

Function: pos-listp

(defun pos-listp (x)
  (declare (xargs :guard t))
  (let ((__function__ 'pos-listp))
    (declare (ignorable __function__))
    (if (consp x)
        (and (posp (car x)) (pos-listp (cdr x)))
      t)))

Subtopics

Pos-listp-basics: Basic theorems about pos-listp, generated by deflist.