hex.mul.clear_carry

Reset the per-multiplication carry-tracking variable to zero. Called by hex.add_mul at the start and end of each addition step (and transitively by hex.mul through hex.add_mul).

Signature

def clear_carry @ return < .ret, .add_carry_dst { ... }

Defined in hex/mul.fj — lines 91–98 (view on GitHub).

Complexity

• Time: 3@+1

• Space: 3@+1

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

Source

Click to view the macro body

def clear_carry @ return < .ret, .add_carry_dst {
    ..add.clear_carry
    wflip .ret+w, return
    .add_carry_dst+dbit+9; .add_carry_dst
    pad 16
  return:
    wflip .ret+w, return
}

Depends on

• hex.add.clear_carry/0

Used by

• hex.add_mul/4

Example uses

• hex.add_mul in hex/mul.fj

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