lyra2re algo

[djm34]

Hi,

here is the code for the lyra2 algo.
Some modification were necessary (findnonce and opencl-driver) to support pre-calculation of the first blake256 round. I used the same logic as in cgminer (used for blakecoin).

[mrbrdo]

can you please squash these commits together into a single commit and force push

[mrbrdo]

It looks ok for the most part but:

• I am against introducing a global variable (bool opt_lyra;). This is a bad idea, it should be done differently.
• line 1366 in driver-opencl.c does not conform to our coding style: https://github.com/sgminer-dev/sgminer/blob/master/doc/coding.md
• remove example.bat

[mrbrdo]

To remove opt_lyra you can access current algorithm from thr_info *thr (which is a parameter to opencl_prepare_work) like so:

thr->cgpu->algorithm

So you could add a bool with a name something like prepare_blake256 to algorithm_t. Since we do not want to compare string every time in opencl_prepare_work.

When you are done with the changes please squash and push a single commit.

[kenshirothefist]

@ystarnaud @djm34 @mrbrdo @badman74 so, anybody willing to push this through? badman74 also did some more cleanups: https://github.com/badman74/sgminer

[mrbrdo]

@djm34 could you do the proposed changes? I cannot develop currently as I don't have hardware to test it. The necessary changes should be pretty simple and shouldn't take long.

[ystarnaud]

I will take a look.