| … | |
… | |
| 470 | return !is_constant (num) ? get_range (num) // non-constant |
470 | return !is_constant (num) ? get_range (num) // non-constant |
| 471 | : num & (num - 1) ? (this->next () * (uint64_t)num) >> 32U // constant, non-power-of-two |
471 | : num & (num - 1) ? (this->next () * (uint64_t)num) >> 32U // constant, non-power-of-two |
| 472 | : this->next () & (num - 1); // constant, power-of-two |
472 | : this->next () & (num - 1); // constant, power-of-two |
| 473 | } |
473 | } |
| 474 | |
474 | |
| 475 | // return a number within (min .. max) |
475 | // return a number within the closed interval [min .. max] |
| 476 | int operator () (int r_min, int r_max) |
476 | int operator () (int r_min, int r_max) |
| 477 | { |
477 | { |
| 478 | return is_constant (r_min) && is_constant (r_max) && r_min <= r_max |
478 | return is_constant (r_min) && is_constant (r_max) && r_min <= r_max |
| 479 | ? r_min + operator ()(r_max - r_min + 1) |
479 | ? r_min + operator ()(r_max - r_min + 1) |
| 480 | : get_range (r_min, r_max); |
480 | : get_range (r_min, r_max); |
| 481 | } |
481 | } |
| 482 | |
482 | |
|
|
483 | // return a number within the closed interval [0..1] |
| 483 | double operator ()() |
484 | double operator ()() |
| 484 | { |
485 | { |
| 485 | return this->next () / (double)0xFFFFFFFFU; |
486 | return this->next () / (double)0xFFFFFFFFU; |
| 486 | } |
487 | } |
| 487 | |
488 | |
