char-ci<=?

Conformance: R5RS Scheme

Purpose: Case-insensitively test whether a sequence of chars is in lexically non-descending order.

Arguments:
X - char
Y... - chars

Model:

(define char-ci<=?
  (predicate-iterator
    (lambda (x y)
      (<= (char->integer (char-downcase x))
          (char->integer (char-downcase y))))))

Implementation:

; This function is a primitive function.

Example:

(char-ci<=? #\b #\B #\c) 
=> #t

See also:
char<=?, char-ci<?, char-ci=?, char-ci>?, char-ci>=?, string<=?, equal?.