gauss_rand
current->c_x = gauss_rand(0.0, .8, 4.0);
current->c_y = gauss_rand(0.0, .8, 4.0);
current->r = gauss_rand(fractal->r_mean, fractal->dr_mean, 3.0);
current->A = gauss_rand(0.0, 360.0, 4.0) * (M_PI / 180.0);
current->A2 = gauss_rand(0.0, 360.0, 4.0) * (M_PI / 180.0);