char-greaterp

char-greaterp

type: predicate function (subr) 
location: built-in
source file: xlstr.c
Common LISP compatible: yes
supported on: all machines

SYNTAX

(char-greaterp <char1> <charN> ... )
        <char1>         -       a character expression
        <charN>         -       character expression(s) to compare

DESCRIPTION

The CHAR-GREATERP function takes one or more character arguments. It checks to see if all the character arguments are monotonically decreasing. T is returned if the arguments are of monotonically decreasing ASCII value. In the case of two arguments, this has the effect of testing if <char1> is greater than <char2>. This test is case insensitive - the character #\a is considered to be the same ASCII value as #\A.

EXAMPLES

(char-greaterp #\a #\b)                 ; returns NIL
(char-greaterp #\b #\a)                 ; returns T
(char-greaterp #\c #\b #\a)             ; returns T
(char-greaterp #\a #\a)                 ; returns NIL 
(char-greaterp #\c #\a #\b)             ; returns NIL
(char-greaterp #\A #\a)                 ; returns NIL
(char-greaterp #\a #\A)                 ; returns NIL