IFNDEF:

	IFNDEF	label

If the symbol specified in the operand is not defined the code following the conditional statement will is assembled until either an 'else', 'endif', or other conditional assemby mneumonic is encountered. This statement must be terminated by a matching 'endif' directive.


Example:
	ifndef	lodval
	lda	#$11	* Assembled only if 'lodval' is not defined
	else
	lda	#$22	* Assembled 
	only	if
	'lodval'
	is	defined
	endif



See also:
COND, ENDC, IFP1, IFP2, ENDP, IFDEF, IF, IFN, IFEQ, IFNE, IFGT, IFGE, IFLT, IFLE, ELSE, ENDIF

Compatibility:
CASM X
CCASM  
OS-9 RMA  
Edt/Asm III  
Edtasm6309  
Disk Edtasm+  
Edtasm+  
Macro-80C