RNGgaussian()

tfxx::numeric::RNGgaussian::RNGgaussian ( const double &  std = 1., const double &  mean = 0., const char *  type = "default"  )

explicit

initialize random number generator

Definition at line 52 of file rng.cc.

References MR, TFXX_assert, TFXX_Xassert, and type().

                                              :
      Mstd(std), Mmean(mean)
    {
      if (std::string(type) == "default")
      {
        gsl_rng_env_setup();
        const gsl_rng_type* T=gsl_rng_default;
        MR=gsl_rng_alloc(T);
        TFXX_assert(MR!=NULL, "gsl_rng_alloc(T) failed to initialize RNG"); 
      }
      else
      {
        const gsl_rng_type* T=NULL;
        const gsl_rng_type **t, **t0;
        t0 = gsl_rng_types_setup ();

        for (t = t0; *t != 0; t++)
        {
          if (std::string((*t)->name)==std::string(type)) { T=(*t); }
        }
        TFXX_Xassert(T!=NULL, type, UTException);
        MR=gsl_rng_alloc(T);
        TFXX_assert(MR!=NULL, "gsl_rng_alloc(T) failed to initialize RNG"); 
      }
      this->set(gsl_rng_default_seed);
    }

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