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FlipJump
FlipJump
  • Getting Started
    • Installation
    • Hello, World!
    • Anatomy of a FlipJump program
  • Language Reference
    • The FlipJump Instruction
    • Lexical Structure
    • Expressions
    • Macros
    • Namespaces
    • Directives
    • Types and built-in names
    • Input / Output
    • Complexity notation
  • Standard Library
    • runlib.fj
    • casting.fj
    • ptrlib.fj
    • bit/memory.fj
    • bit/logics.fj
    • bit/cond_jumps.fj
    • bit/shifts.fj
    • bit/math.fj
    • bit/input.fj
    • bit/output.fj
    • bit/casting.fj
    • bit/pointers.fj
    • bit/mul.fj
    • bit/div.fj
    • hex/memory.fj
    • hex/logics.fj
    • hex/math.fj
    • hex/math_basic.fj
    • hex/shifts.fj
    • hex/cond_jumps.fj
    • hex/tables_init.fj
    • hex/input.fj
    • hex/output.fj
    • hex/mul.fj
    • hex/div.fj
    • hex/pointers/basic_pointers.fj
    • hex/pointers/xor_to_pointer.fj
    • hex/pointers/xor_from_pointer.fj
    • hex/pointers/read_pointers.fj
    • hex/pointers/write_pointers.fj
    • hex/pointers/stack.fj
    • hex/pointers/pointer_arithmetics.fj
  • Examples
    • Hello World
    • Prime Sieve
    • Calculator
    • Quine
  • Companion tools and resources
    • FlipJump IDE — fj.tomhe.app
    • c2fj — C to FlipJump
    • bf2fj — Brainfuck to FlipJump
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hex.swap (arity 3)¶

Unsafe if dst and src overlap! but safe if they are the exact same address.
hex1[:n], hex2[:n] = hex2[:n], hex1[:n]

Signature¶

def swap n, hex1, hex2 @ end { ... }

Defined in hex/memory.fj — lines 115–121 (view on GitHub).

Complexity¶

  • Time: n(3@)

  • Space: n(3@+36)

See the complexity glossary for what @, w, dw, dbit, n mean.

Depends on¶

  • hex.xor/3

  • stl.comp_if1

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  • hex.swap (arity 3)
    • Signature
    • Complexity
    • Depends on