kolibrios/programs/develop/SPForth/devel/~nn/lib/ifdef.f

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C" [DEFINED]" FIND NIP 0=
[IF]
: [DEFINED] ( -- f ) \ "name"
NextWord SFIND IF DROP TRUE ELSE 2DROP FALSE THEN
; IMMEDIATE
: [UNDEFINED] ( -- f ) \ "name"
POSTPONE [DEFINED] 0=
; IMMEDIATE
[THEN]
: [IFDEF]
POSTPONE [DEFINED]
0= IF POSTPONE [ELSE] THEN
; IMMEDIATE
: [IFNDEF]
POSTPONE [UNDEFINED]
0= IF POSTPONE [ELSE] THEN
; IMMEDIATE