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Re: [Help-gsl] accessing random number generator from functions

From: Brian Gough
Subject: Re: [Help-gsl] accessing random number generator from functions
Date: Tue, 23 Nov 2004 17:25:40 +0000

Joakim Hove writes:
 > Nathan Moore <address@hidden> writes:
 > > This is a general question about the scope of random number
 > > generators. 
 > A (gsl) random number generator is implemented as a struct, and %100
 > normal scoping rules apply.

Just to add to Joakim's response, if you're writing traditional
single-threaded code and not worried about multi-threading you can
define the rng as a global variable.

 gsl_rng * dice;

 int main () { 
  dice = gsl_rng_alloc(...);

Then put "extern gsl_rng * dice" in your header files to access it from
other source files.  This saves passing it around as an argument.

best regards

Brian Gough

Network Theory Ltd,
Commercial support for GSL ---

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