hex.if_flags

Jumps to l1 if bit hex of the 16-bit flags constant is set, else l0.

Signature

def if_flags hex, flags, l0, l1 @ switch, clean, return, finish { ... }

Defined in hex/cond_jumps.fj — lines 12–26 (view on GitHub).

Complexity

• Time: @-1

• Space: @+15

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

Source

Click to view the macro body

def if_flags hex, flags, l0, l1 @ switch, clean, return, finish {
    wflip hex+w, switch, hex

    pad 16
  switch:
    rep(16, i) stl.fj    (flags>>i)&1 ? return+dbit+0 : 0,    clean

  clean:
    wflip hex+w, switch
  return: ;finish
    pad 2
  finish:
                 ; l0
    return+dbit+0; l1
}

Used by

• hex.if/3

• hex.input_as_hex/2

• hex.input_dec_int

• hex.input_dec_int_until

• hex.input_dec_uint

• hex.input_dec_uint_until

• hex.pointers.xor_hex_to_flip_ptr/2

• hex.sign

Example uses

• hex.if in hex/cond_jumps.fj

• hex.sign in hex/cond_jumps.fj

• hex.input_as_hex in hex/input.fj

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Next: hex.if/3 →