[Help-gsl] Fwd: Ranges for random generators

[Sergey Ivanov]

Use to print via
fprintf(stderr, "Generator %s set with range [%lu, %lu]\n",
gsl_rng_name(ice_real_random_gsl),
    gsl_rng_min(ice_real_random_gsl), gsl_rng_max(ice_real_random_gsl)).
Moreover, printing under gdb gsl_rng_max(ice_real_random_gsl) returns
.......... -1! Why? It should be unsigned long by documentation. And
(unsigned long)gsl_rng_max(ice_real_random_gsl) returns 2^(64)-1 for
mt19937_1998 in debugger. Is it relates to some error in header or it
because debugger doesn't see those headers? What actually
gsl_rng_max(ice_real_random_gsl)  returns?


---------- Forwarded message ----------
From: Sergey Ivanov <address@hidden>
Date: 2011/2/8
Subject: Ranges for random generators
To: address@hidden


Looking for generator with 64-bit range. for gsl_rng_alloc function.
This is a list oif all possible generators (if env GSL_RNG_TYPE is
wrong then this list return gsl_rng_env_setup):
Valid generator types are:
          borosh13               cmrg            coveyou          fishman18
         fishman20          fishman2x              gfsr4           knuthran
         knuthran2       knuthran2002          lecuyer21             minstd
               mrg            mt19937       mt19937_1999       mt19937_1998
              r250               ran0               ran1               ran2
              ran3               rand             rand48      random128-bsd
  random128-glibc2    random128-libc5      random256-bsd   random256-glibc2
   random256-libc5       random32-bsd    random32-glibc2     random32-libc5
      random64-bsd    random64-glibc2     random64-libc5        random8-bsd
    random8-glibc2      random8-libc5         random-bsd      random-glibc2
      random-libc5              randu               ranf             ranlux
         ranlux389            ranlxd1            ranlxd2            ranlxs0
           ranlxs1            ranlxs2             ranmar             slatec
              taus              taus2            taus113         transputer
             tt800                uni              uni32                vax
        waterman14                zuf

So, i tried mt19937_1998, random64-bsd, random64-glibc2,
random256-libc5 and in first case

gsl_rng_max returns 4294967295, in other cases - 2147483647...

Box is 64-bit, sizeof(int)=4, sizeof(long int)=sizeof(long long int)=8
--
Kind regards,
Sergey Ivanov



-- 
Kind regards,
Sergey Ivanov