`hex.write_nth_hex`¶

*(ptr + index*2w) = src — write src into the index-th hex past *ptr.

src is a hex; ptr is a hex[:w/4]; index is a signed hex[:w/4] (may be negative). ptr, index, src are preserved.

Signature¶

def write_nth_hex ptr, index, src < hex.pointers.nth_ptr { ... }

Defined in hex/pointers/write_pointers.fj — lines 92–95 (view on GitHub).

Complexity¶

Time: w(3@+10.25) + 11@+25 // for w=64
Space: w(3@+69) + 11@+112 // for w=64

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 write_nth_hex ptr, index, src < hex.pointers.nth_ptr {
    .ptr_index hex.pointers.nth_ptr, ptr, index
    .write_hex hex.pointers.nth_ptr, src
}

Depends on¶

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