fidos <fidos [at] wanadoofr> wrote:
> http://pagesperso-orange.fr/fidos/MCPov/MCPov.html.

  Are you using the C rand() function to generate random numbers? That
function is of completely subpar quality and quite slow.

  You should use a fast high-quality RNG, such as for example
http://warp.povusers.org/IsaacRand.zip

  (That RNG generates very high-quality random numbers with an enormous
period and it's over twice as fast as the rand() in the gcc C library.)

-- 
                                                          - Warp

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