XLISP char>=

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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-increasing ASCII value, NIL otherwise
  Note: case is significant with this function

## Description

The 'char>=' function tests if all character arguments are monotonically non-increasing. T is returned if the arguments are of monotonically non-increasing ASCII value, NIL otherwise. In the case of two arguments, this has the effect of testing if 'char1' is greater than or equal to 'char2'. This test is case sensitive, the character '#\a' is different and of greater ASCII value than the characrer '#\A'.

## Examples

    (char>= #\a #\b)      => NIL
    (char>= #\b #\a)      => T
    (char>= #\c #\b #\a)  => T
    (char>= #\a #\a)      => T
    (char>= #\c #\a #\b)  => NIL
    (char>= #\A #\a)      => NIL
    (char>= #\a #\A)      => T

See also:

- Contents → Character Functions

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Nyquist / XLISP 2.0 - Contents | Tutorials | Examples | Reference