Forth 2012: 2SWAP

6.1.0430

2SWAP

two-swap

CORE

( x₁ x₂ x₃ x₄ -- x₃ x₄ x₁ x₂ )

Exchange the top two cell pairs.

Testing:

T{ 1 2 3 4 2SWAP -> 3 4 1 2 }T

Forth 2012
- Forth 2012
Glossary
2SWAP
- !
- #
- #>
- #S
- '
- (
- *
- */
- */MOD
- +
- +!
- +LOOP
- ,
- -
- .
- ."
- /
- /MOD
- 0<
- 0=
- 1+
- 1-
- 2!
- 2*
- 2/
- 2@
- 2DROP
- 2DUP
- 2OVER
- 2SWAP
- :
- ;
- <
- <#
- =
- >
- >BODY
- >IN
- >NUMBER
- >R
- ?DUP
- @
- ABORT
- ABORT"
- ABS
- ACCEPT
- ALIGN
- ALIGNED
- ALLOT
- AND
- BASE
- BEGIN
- BL
- C!
- C,
- C@
- CELL+
- CELLS
- CHAR
- CHAR+
- CHARS
- CONSTANT
- COUNT
- CR
- CREATE
- DECIMAL
- DEPTH
- DO
- DOES>
- DROP
- DUP
- ELSE
- EMIT
- ENVIRONMENT?
- EVALUATE
- EXECUTE
- EXIT
- FILL
- FIND
- FM/MOD
- HERE
- HOLD
- I
- IF
- IMMEDIATE
- INVERT
- J
- KEY
- LEAVE
- LITERAL
- LOOP
- LSHIFT
- M*
- MAX
- MIN
- MOD
- MOVE
- NEGATE
- OR
- OVER
- POSTPONE
- QUIT
- R>
- R@
- RECURSE
- REPEAT
- ROT
- RSHIFT
- S"
- S>D
- SIGN
- SM/REM
- SOURCE
- SPACE
- SPACES
- STATE
- SWAP
- THEN
- TYPE
- U.
- U<
- UM*
- UM/MOD
- UNLOOP
- UNTIL
- VARIABLE
- WHILE
- WORD
- XOR
- [
- [']
- [CHAR]
- ]
- .(
- .R
- 0<>
- 0>
- 2>R
- 2R>
- 2R@
- :NONAME
- <>
- ?DO
- ACTION-OF
- AGAIN
- BUFFER:
- C"
- CASE
- COMPILE,
- DEFER
- DEFER!
- DEFER@
- ENDCASE
- ENDOF
- ERASE
- FALSE
- HEX
- HOLDS
- IS
- MARKER
- NIP
- OF
- PAD
- PARSE
- PARSE-NAME
- PICK
- REFILL
- RESTORE-INPUT
- ROLL
- S\"
- SAVE-INPUT
- SOURCE-ID
- TO
- TRUE
- TUCK
- U.R
- U>
- UNUSED
- VALUE
- WITHIN
- [COMPILE]
- \