hex.input_hex

hex := input(4bits) // lsb first

Signature

def input_hex hex @ flip0, flip1, flip2, flip3, end < stl.IO { ... }

Defined in hex/input.fj — lines 8–27 (view on GitHub).

Complexity

• Time: 2@+7

• Space: 2@+18

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

Source

Click to view the macro body

def input_hex hex @ flip0, flip1, flip2, flip3, end < stl.IO {
    // part0
    .zero hex
    wflip stl.IO+w, flip0, stl.IO

    pad 8
  flip0:
    stl.IO+dbit+1;stl.IO        // part1
    hex+dbit+0;flip0    //(part0.5)
  flip1:
    stl.IO+dbit+2;stl.IO        // part2
    hex+dbit+1;flip1    //(part1.5)
  flip3:
    wflip stl.IO+w, flip3, end  // part4
    hex+dbit+3;flip3        //(part3.5)
  flip2:
    stl.IO+dbit+1;stl.IO        // part3
    hex+dbit+2;flip2    //(part2.5)
  end:
}

Depends on

• hex.zero/1

Used by

• hex.input/1

• hex.input_as_hex/2

Example uses

• hex.input in hex/input.fj

• hex.input_as_hex in hex/input.fj

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Next: hex.input/1 →