Add cgbn_swap

[sethtroisi]

Uses mpswap<LIMBS> which was already written for GCD.

Added and ran tests

[==========] Running 880 tests from 55 test suites.
[----------] Global test environment set-up.
[----------] 23 tests from S32T4/CGBN1/0, where TypeParam = size32t4
[ RUN      ] S32T4/CGBN1/0.set_1
[       OK ] S32T4/CGBN1/0.set_1 (577 ms)
[ RUN      ] S32T4/CGBN1/0.swap_1
[       OK ] S32T4/CGBN1/0.swap_1 (29 ms)
...
[----------] 23 tests from S3072T32/CGBN1/0, where TypeParam = size3072t32
[ RUN      ] S3072T32/CGBN1/0.set_1
[       OK ] S3072T32/CGBN1/0.set_1 (1944 ms)
[ RUN      ] S3072T32/CGBN1/0.swap_1
[       OK ] S3072T32/CGBN1/0.swap_1 (434 ms)
...
[ RUN      ] S8192T32/CGBN1/0.set_1
[       OK ] S8192T32/CGBN1/0.set_1 (1793 ms)
[ RUN      ] S8192T32/CGBN1/0.swap_1
[       OK ] S8192T32/CGBN1/0.swap_1 (429 ms)
...
[----------] Global test environment tear-down
[==========] 880 tests from 55 test suites ran. (259412 ms total)
[  PASSED  ] 880 tests.

[sethtroisi]

@nemmart This is a trivial merge (you had already written mpswap<LIMBS>). I would love if it could go in as the alternative is 3x cgbn_set which can be replaced a single cgbn_swap

[nemmart]

Hi Seth, I've been quite busy at work.  I'll get to this next week. Thanks,Niall On Tuesday, September 14, 2021, 08:54:39 PM EDT, Seth Troisi @.***> wrote:

@nemmart This is a trivial merge (you had already written mpswap). I would love if it could go in as the alternative is 3x cgbn_set which can be replaced a single cgbn_swap

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[sethtroisi]

@nemmart I'm working on upstreaming my cuda code and would love to be able to include cgbn_swap instead of the 3-way set

[sethtroisi]

Thanks!