.listmac

.macro  testdef
  .ifdef @0
    .dw 1
  .else
    .dw 0
  .endif
.endm

.macro  testndef
  .ifndef @0
    .dw 0
  .else
    .dw 1
  .endif
.endm

backref:
	testdef notdef
	testdef backref
	testdef forwardref

	testndef notdef
	testndef backref
	testndef forwardref
forwardref:

;C:/Programme/Atmel/AVR\ Tools/AvrAssembler2/avrasm2.exe -f- -l test-ifdef.lst test-ifdef.asm

;AVRASM: AVR macro assembler 2.1.42 (build 1796 Sep 15 2009 10:48:36)