[PRNG] Add check to PRNG to make sure that unsigned integer arithmetic is wrapping #7287
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Thanks @tkonolige. One thing to note that assert may not be available in every platform, better to put down a comment. Might be useful to have it as a separate testing function. |
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altanh
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bump @tqchen @ZihengJiang I think this is good to go since we resolved the assert discussion |
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Merged. Thanks @tkonolige @altanh |
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…c is wrapping (apache#7287) * [PRNG] Add check to PRNG to make sure that unsigned integer arithmetic is wrapping * Add threefry_test_wrapping: a manual test for wrapping unsigned arithmetic. * fix test to actually run on the target * formatting * lint
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…c is wrapping (apache#7287) * [PRNG] Add check to PRNG to make sure that unsigned integer arithmetic is wrapping * Add threefry_test_wrapping: a manual test for wrapping unsigned arithmetic. * fix test to actually run on the target * formatting * lint
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…c is wrapping (apache#7287) * [PRNG] Add check to PRNG to make sure that unsigned integer arithmetic is wrapping * Add threefry_test_wrapping: a manual test for wrapping unsigned arithmetic. * fix test to actually run on the target * formatting * lint
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…c is wrapping (apache#7287) * [PRNG] Add check to PRNG to make sure that unsigned integer arithmetic is wrapping * Add threefry_test_wrapping: a manual test for wrapping unsigned arithmetic. * fix test to actually run on the target * formatting * lint
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This PR adds a simple test to
threefry_generateto make sure that unsigned integer arithmetic is wrapping. We have no guarantee of wrapping on our platforms, so this is the best we can do. I've added the test tothreefry_generateas it should be called before other threefry functions and it should called infrequently.@altanh @antinucleon @junrushao1994 @eric-haibin-lin @MarisaKirisame