Nyquist / XLISP 2.0  - 
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char<=
  | Type: | - | function (subr) | 
  | Source: | - | xlstr.c | 
Syntax
- (char<= char1 charN ... )
- char1 - a character expression
 charN - character expression[s] to compare
 returns -  T 
if the characters are of monotonically non-decreasing
ASCII value,
NIL otherwise
 Note: case is significant with this function
 
Description
 The 'char<=' function tests if all character arguments are
monotonically non-decreasing.
 T  is returned if the arguments
are of monotonically non-decreasing
ASCII value, NIL
otherwise. In the case of two arguments, this has the effect of
testing if 'char1' is less than or equal to 'char2'. This test is case
sensitive, the character '#\a' is different and of greater
ASCII value than the character
'#\A'.
Examples
(char<= #\a #\b)      => T
(char<= #\b #\a)      => NIL
(char<= #\a #\b #\c)  => T
(char<= #\a #\a)      => T
(char<= #\a #\b #\b)  => T
(char<= #\A #\a)      => T
(char<= #\a #\A)      => NIL
See also:
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Nyquist / XLISP 2.0  - 
Contents |
Tutorials |
Examples |
Reference