`hex.fill_bytes`¶

Fills “count[:w/4]” bytes of the pointed buffer with the value byte.
ptr,count are hex[:w/4]; value is a hex[:2]. All three are preserved.

Signature¶

def fill_bytes ptr, count, value @ loop, finish, wptr, cnt, end { ... }

Defined in hex/strings.fj — lines 89–103 (view on GitHub).

Complexity¶

Time: count(w(@+5) + 28@+55)
Space: w(2.25@+44) + 35@+300

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

Requires init¶

The following must be initialised before this macro is invoked:

hex.init and stl.ptr_init (or stl.startup_and_init_all).

Source¶

Click to view the macro body

def fill_bytes ptr, count, value @ loop, finish, wptr, cnt, end {
    .mov w/4, wptr, ptr
    .mov w/4, cnt, count
  loop:
    .if0 w/4, cnt, finish
    .write_byte_and_inc wptr, value
    .dec w/4, cnt
    ;loop
  finish:
    ;end

  wptr: .vec w/4
  cnt:  .vec w/4
  end:
}

Depends on¶

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