Re: [Boost-users] Random: How to get a different seed?

Subject: Re: [Boost-users] Random: How to get a different seed?
From: Cedric Laczny (cedric.laczny_at_[hidden])
Date: 2011-01-24 16:26:48

On Monday, 24. January 2011 22:11:55 Steven Watanabe wrote:
> AMDG
> 
> On 1/24/2011 12:57 PM, Lasse Kliemann wrote:
> > I use /dev/urandom for this, like so (code fragments):
> >    FILE *dev_urandom;
> >    uint32_t seed;
> >    if((dev_urandom = fopen("/dev/urandom", "r")) == NULL) throw /* error
> >    */ if(fread(&seed, sizeof(seed), 1, dev_urandom) == 0) throw /* error
> >    */ if(fclose(dev_urandom) != 0) throw /* error */
> >    boost::mt19937 gen(seed);
> > 
> > But maybe there are even better ways.
> 
> boost::random_device seed_gen;
> boost::mt19937 gen(seed_gen());
> 
> should have the same effect and is more portable.
> 

Nice. Thank you.

> In Christ,
> Steven Watanabe
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Best,

Cedric