hex.pointers.xor_byte_to_flip_ptr

xors (the byte hex[2:]) to the byte pointed by the memory-word hex.pointers.to_flip.
use after: .pointers.set_flip_pointer ptr
does: .xor *ptr, hex[:2] (as it uses the address in to_flip)
It assumes that the value in the memory-word to_flip is a dw-aligned address to an hex-variable.

Signature

def xor_byte_to_flip_ptr hex { ... }

Defined in hex/pointers/xor_to_pointer.fj — lines 106–108 (view on GitHub).

Complexity

• Time: 10@+24

• Space: 10@+152

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

Source

Click to view the macro body

def xor_byte_to_flip_ptr hex {
    rep(2, i) .xor_hex_to_flip_ptr hex+i*dw, 4*i
}

Used by

• hex.write_byte/2

• hex.xor_byte_to_ptr/2

• hex.zero_ptr

Example uses

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

• hex.zero_ptr in hex/pointers/write_pointers.fj

• hex.write_byte in hex/pointers/write_pointers.fj

---

← Previous: hex.pointers.xor_hex_to_flip_ptr/1 Next: hex.pointers.xor_hex_to_flip_ptr/2 →