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Vl-typo-count-mismatches

Given two same-length partitionings, determine how many of their pieces are mismatched.

Signature

(vl-typo-count-mismatches x y) → *

Definitions and Theorems

Function: vl-typo-count-mismatches

(defun vl-typo-count-mismatches (x y)
  (declare (xargs :guard (same-lengthp x y)))
  (let ((__function__ 'vl-typo-count-mismatches))
    (declare (ignorable __function__))
    (cond ((atom x) 0)
          ((equal (car x) (car y))
           (vl-typo-count-mismatches (cdr x)
                                     (cdr y)))
          (t (+ 1
                (vl-typo-count-mismatches (cdr x)
                                          (cdr y)))))))