AMDG Tiago de Paula Peixoto wrote:
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Steven Watanabe wrote:
I obtain similar results with other generators, except with minstd_rand, where the sequences from both libraries are the same. This lead me to conclude that the problem is with the generators themselves, not with uniform_int<>.
The problem is in uniform_int<>. The behavior of uniform_int depends on the range of the generator.
It is true, I don't see this problem when using a uniform_real<> distribution. But I do see it with uniform_smallint<> as well.
In any case, uniform_int<> and uniform_smallint<> are quite broken, if they can't be uniform for such a small range.
In uniform_smallint, the bias is intentional. You should only use it if you are willing to accept the bias to gain performance. For such a small range, they are both "close" to being uniform, but because of the way you are using it, the bias is magnified. If you just counted the number of each value, the difference should not be huge. In Christ, Steven Watanabe