Re: [Boost-users] [random] infinite loop in uniform_real_distribution

25 Nov 2013

      AMDG

On 11/25/2013 02:22 PM, Brian Budge wrote:
...
You can achieve what you want by generating a random number on [-1, 1]
and multiplying it by the max float.  I don't think that there is a
*general* way to arrive at a uniform distribution of a range greater
than max float by first generating a random number on [0, 1), so it's
unlikely that the library can be "fixed" to achieve what you want.
It's really quite easy.

if ( max - min == infinity )
{
    divisor = 2;
    min /= divisor;
    max /= divisor;
} else {
    divisor = 1;
}

// compute a value in [min, max) as usual

result *= divisor;
...
Another method would be to use double precision generation on the max
float range, and then convert to float.
In Christ,
Steven Watanabe