hex.print_as_digit (arity 2)

prints the ascii of the hexadecimal representation of hex.

use_uppercase (constant): if true, print in uppercase (else lowercase).

Signature

def print_as_digit hex, use_uppercase @ switch, print_0, print_2, print_4, print_6, print_8, print_a, print_b, print_d, print_f, end < stl.IO { ... }

Defined in hex/output.fj — lines 85–144 (view on GitHub).

Complexity

• Time: @+4

• Space: @+36

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

Source

Click to view the macro body

def print_as_digit hex, use_uppercase @ switch, print_0, print_2, print_4, print_6, print_8, \
        print_a, print_b, print_d, print_f, end < stl.IO {
    wflip hex+w, switch, hex
    pad 16
  switch:
    stl.IO+0;print_0    //  0
    stl.IO+1;print_0    //  1
    stl.IO+0;print_2    //  2
    stl.IO+1;print_2    //  3
    stl.IO+0;print_4    //  4
    stl.IO+1;print_4    //  5
    stl.IO+0;print_6    //  6
    stl.IO+1;print_6    //  7
    stl.IO+0;print_8    //  8
    stl.IO+1;print_8    //  9

    stl.IO+1;print_a    //  a
    stl.IO+0;print_b    //  b
    stl.IO+1;print_b    //  c
    stl.IO+0;print_d    //  d
    stl.IO+1;print_d    //  e
    stl.IO+0;print_f    //  f

  print_0:  // outputs 0x30
    stl.IO+0;
    stl.IO+0;
    stl.IO+0;
    stl.IO+1;
    stl.IO+1;
    stl.IO+0;
    stl.IO+0;end
  print_2:
    stl.IO+1;print_0+1*dw
  print_4:
    stl.IO+0;
    stl.IO+1;print_0+2*dw
  print_6:
    stl.IO+1;print_4+1*dw
  print_8:
    stl.IO+0;
    stl.IO+0;
    stl.IO+1;print_0+3*dw
  print_a:  // outputs 0x40 / 0x60
    stl.IO+0;
    stl.IO+0;
    stl.IO+0;
    stl.IO+0;
    stl.IO+(use_uppercase ? 0 : 1);
    stl.IO+1;print_0+6*dw
  print_b:
    stl.IO+1;print_a+1*dw
  print_d:
    stl.IO+0;
    stl.IO+1;print_a+2*dw
  print_f:
    stl.IO+1;print_d+1*dw

  end:
    wflip hex+w, switch
}

Used by

• hex.print_uint.print_digit

Example uses

• hex.print_uint.print_digit in hex/output.fj

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