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/= (not equal to)
 
 
 

Compares arguments for numerical inequality

(/= numstr [numstr] ...)

Arguments

numstr

A number or a string.

Return Values

T, if no two successive arguments are the same in value; otherwise nil. If only one argument is supplied, /= returns T.

Note that the behavior of /= does not quite conform to other LISP dialects. The standard behavior is to return T if no two arguments in the list have the same value. In AutoLISP, /= returns T if no successive arguments have the same value; see the examples that follow.

Examples

(/= 10 20)				returns  T 

(/= "you" "you")		returns  nil

(/= 5.43 5.44)			returns  T

(/= 10 20 10 20 20)	 returns  nil

(/= 10 20 10 20)		returns  T
NoteIn the last example, although there are two arguments in the list with the same value, they do not follow one another; thus /= evaluates to T.