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Add a note about word size to the MersenneTwisterEngine changelog entry #5141

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Merged
dlang-bot merged 1 commit into from
Feb 16, 2017
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Add a note about word size to the MersenneTwisterEngine changelog entry #5141

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7 changes: 6 additions & 1 deletion changelog/std-random-MersenneTwisterEngine.dd
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matches the C++11 standard (adding two new template parameters, an extra
tempering parameter `d` and the initialization multiplier `f`).

Handling of the word size `w` has been fixed so that the generator will
now properly handle cases where it is less than the number of bits in
the chosen `UIntType`. This has been validated against the behaviour
of a widely-used implementation of the C++11 standard.

For anyone using the standard template instantiation `Mt19937` this will
have no noticeable effect. However, this will be a breaking change for
have no noticeable effect. However, these will be breaking changes for
anyone using the `MersenneTwisterEngine` template directly.

The internal implementation has been reworked to use Ilya Yaroshenko's
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