Commit Graph

53 Commits

Author SHA1 Message Date
Tobin C. Harding 624cda07b3 Remove unnecessary casts
Clippy emits a bunch of warnings of form:

 warning: casting to the same type is unnecessary ...

As suggested, remove the unnecessary casts.
2022-11-04 11:44:23 +11:00
Tobin C. Harding 02a2b43b2b Remove Default impl for Target and Work
A zero default value for `Target` and `Work` has no significance and/or
usecase, remove the derived `Default` implementation.

Includes making `Target::ZERO` public.
2022-09-30 12:02:06 +10:00
Tobin C. Harding cb9893c4a9 Add Target and Difficulty types
Currently we use the `Uint256` type to represent two proof of work
integers, namely target and difficulty (work).

It would be nice to not have a public integer type that is not fully
implemented (i.e., does not implement arithmetic etc as do integer types
in stdlib). Instead of implementing all the stdlib functions we can
instead add two new wrapper types, since these are not general purpose
integers they do not need to implement anything we do not need to use.

- Add a `pow` module.
- Put a modified version of `Uint256` to `pow`.
- Add two new wrapper types `Target` and `Difficulty`.
- Only implement methods that we use on each type.

Note this patch does not remove the original `Uint256`, that will be
done as a separate patch.
2022-09-28 04:16:59 +10:00