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• Downcase-string

String-has-some-up-alpha-p

Signature

(string-has-some-up-alpha-p x n xl) → *

Arguments

x — Guard (stringp x).

n — Guard (natp n).

xl — Guard (eql xl (length x)).

Definitions and Theorems

Function: string-has-some-up-alpha-p

(defun string-has-some-up-alpha-p (x n xl)
  (declare (type string x)
           (type (integer 0 *) n)
           (type (integer 0 *) xl))
  (declare (xargs :guard (and (stringp x)
                              (natp n)
                              (eql xl (length x)))))
  (declare (xargs :split-types t :guard (<= n xl)))
  (let ((acl2::__function__ 'string-has-some-up-alpha-p))
    (declare (ignorable acl2::__function__))
    (mbe :logic
         (charlist-has-some-up-alpha-p (nthcdr n (explode x)))
         :exec
         (if (eql n xl)
             nil
           (or (up-alpha-p (char x n))
               (string-has-some-up-alpha-p x (+ 1 n)
                                           xl))))))