Hi,
Thanks for taking the time to write a bug report.
On 23 June 2011 at 12:06, NIIBE Yutaka wrote:
| Package: dieharder
| Version: 2.28.1-3
| Severity: minor
|
| I found an issue of random number generator "uvag".
|
| --- libdieharder/rng_uvag.c~ 2008-09-08 21:37:19.000000000 +0900
| +++ libdieharder/rng_uvag.c 2011-06-23 12:03:27.225908700 +0900
| @@ -138,11 +138,11 @@
| * single seed, unsigned long int in type. Alex requires a key
| * string 256 characters long (that is, 64 uints long). We therefore
| * have to bootstrap off of an existing, deterministic GSL RNG to fill
| - * the seed string from a single permitted seed. Note that type 12 is
| + * the seed string from a single permitted seed. Note that type 13 is
| * the mt19937 generator, basically one of the best in the world -- not
| * that it matters.
| */
| - seed_rng = gsl_rng_alloc(types[12]);
| + seed_rng = gsl_rng_alloc(types[13]);
| seed_seed = s;
| gsl_rng_set(seed_rng,seed_seed);
| random_max = gsl_rng_max(seed_rng);
|
| Also, I checked dieharder-3.31.1~20110601 (sid). While code is fixed,
| comment still says "type 12".
Yes, in SVN right now I see
/*
* OK, here we have to modify Alex's algorithm. The GSL requires a
* single seed, unsigned long int in type. Alex requires a key string
* 256 characters long (that is, 64 uints long). We therefore have to
* bootstrap off of an existing, deterministic GSL RNG to fill the seed
* string from a single permitted seed. Note that type 12 is the
* mt19937_1999 generator, basically one of the best in the world -- not
* that it matters.
*/
seed_rng = gsl_rng_alloc(dh_rng_types[14]);
so it is now '14' within a lookup table. The documentation comment may
warrant updating, the code seems fine.
In any event, the version 2.28.1-3 is seriously outdated, consider focusing
on the 3.31.1 prerelease '3.31.1~20110601' now in Debian testing and
unstable.
Regards, Dirk
| -- System Information:
| Debian Release: 6.0.1
| APT prefers stable-updates
| APT policy: (500, 'stable-updates'), (500, 'stable')
| Architecture: i386 (i686)
|
| Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
| Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
| Shell: /bin/sh linked to /bin/dash
|
| Versions of packages dieharder depends on:
| ii libc6 2.11.2-10 Embedded GNU C Library: Shared
lib
| ii libdieharder2 2.28.1-3 Random-number generator test
libra
| ii libgsl0ldbl 1.14+dfsg-1 GNU Scientific Library (GSL) --
li
|
| dieharder recommends no packages.
|
| dieharder suggests no packages.
|
| -- no debconf information
|
|
--
Gauss once played himself in a zero-sum game and won $50.
-- #11 at http://www.gaussfacts.com
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