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String-downcase

In a given string, turn upper-case characters into lower-case

For a string x, (string-downcase x) is the result of applying char-downcase to each character in x.

The guard for string-downcase states that its argument is a string.

String-downcase is a Common Lisp function. See any Common Lisp documentation for more information. Note that the value returned may depend on the host Lisp; see soundness, specifically Example 1 in the Section, “Examples of divergence among Lisp implementations”.

Function: string-downcase

(defun string-downcase (x)
  (declare (xargs :guard (stringp x)))
  (coerce (string-downcase1 (coerce x 'list))
          'string))

Subtopics

Downcase-string
Convert a string to lower case.
String-downcase-gen
Downcase any string (even ones with non-standard characters).