hex.ptr_flip

Flip the bit whose address is stored in ptr. Effectively *ptr;.

Signature

def ptr_flip ptr @ cleanup < hex.pointers.to_flip { ... }

Defined in hex/pointers/xor_to_pointer.fj — lines 7–16 (view on GitHub).

Complexity

• Time: w(0.5@+2)  + @

• Space: w(0.5@+14) + @

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

Source

Click to view the macro body

def ptr_flip ptr @ cleanup < hex.pointers.to_flip {
    wflip hex.pointers.to_flip+w, cleanup

    .pointers.set_flip_pointer ptr
    ;hex.pointers.to_flip

    pad 4
  cleanup:
    wflip hex.pointers.to_flip+w, cleanup
}

Depends on

• hex.pointers.set_flip_pointer

Used by

• hex.ptr_flip_dbit

Example uses

• hex.ptr_flip_dbit in hex/pointers/xor_to_pointer.fj

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Next: hex.ptr_flip_dbit →