xref: /titanic_41/usr/src/lib/efcode/fcode_test/iftest.fth (revision 7c478bd95313f5f23a4c958a745db2134aa03244)

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cr ." Simple interpreted IF THEN test: "
1 if .passed then space
0 if .failed then space
cr

." Simple interpreted IF ELSE THEN test: "
0 if .failed else .passed then space
1 if .passed else .failed then space
cr

." Nested interpreted IF test: "
1 1 1 0 0 1 0 0
if	if .failed	else .failed	then space
else	if .failed	else .passed	then space
then
if	if .failed	else .passed	then space
else	if .failed	else .failed	then space
then
if	if .failed	else .failed	then space
else	if .passed	else .failed	then space
then
if	if .passed	else .failed	then space
else	if .failed	else .failed	then space
then
cr

." Compiled single IF tests:" space
: if-true?	if .passed space 0 exit	then .failed space 0 ;	1 if-true?
: if-false?	if .failed space 1 exit	then .passed space 1 ;	if-false?
: true?		if .passed else .failed then space 0 ;		true?
: false?	if .failed else .passed then space ;		false?

cr

." Nested compiled IF test: "
: if-test1 ( -- )
   0 1 0 if
      .failed
   else
      if
         dup if .failed then
         if .failed else .passed then
      else
         .failed
      then
   then
; if-test1 space

: .passed?  ( str,len flag )
   if if then if then .passed  space else  cr type space .failed cr then
;

: if-test2 ( x x x -- )
   if
      if
         if
            7
         else
            6
         then
      else
         if
            5
         else
            4
         then
      then
   else
      if
         if
            3
         else
            2
         then
      else
         if
            1
         else
            0
         then
      then
   then
;

 " if-test2.0"   0 0 0 if-test2 0 = .passed?
 " if-test2.1"   1 0 0 if-test2 1 = .passed?
 " if-test2.2"   0 1 0 if-test2 2 = .passed?
 " if-test2.3"   1 1 0 if-test2 3 = .passed?
 " if-test2.4"   0 0 1 if-test2 4 = .passed?
 " if-test2.5"   1 0 1 if-test2 5 = .passed?
 " if-test2.6"   0 1 1 if-test2 6 = .passed?
 " if-test2.7"   1 1 1 if-test2 7 = .passed?
cr