Hi,
On 09/26/2012 01:16 PM, Ulrich Drepper wrote:
Here is a patch to accelerate the __generate function for the
normal_distribution<double> class. The speed-up is quite significant,
the amount depending on which random number engine is used.
mt19937 +20%
mt19937_64 +30%
sfmt19937 +30%
sfmt19937_64 +30%
This patch introduces a header with optimizations for <random>. No
changes to existing code needed, this is a straight-forward
specialization. Tested on x86_64-linux. More optimizations follow,
there is still quite a bit of inefficiency in the existing interfaces.
OK to commit?
Looks fine to me. I suppose you want _Power_of_2 inline?
Paolo.
