21960815265

Committed 12 Feb 2026 07:17PM UTC coverage: 81.875% (+0.02%) from 81.851%

Build # 21960815265

Build Type

Pull #3751

github

Committed by

web-flow

Commit Message

Merge 942f5e16f into 8198e6021

Pull Request Pull Request #3751: Resolve conflict with weight windows and global russian roulette

Coverage Stats

17421 of 24368 branches covered (71.49%)

Branch coverage included in aggregate %.

85 of 90 new or added lines in 5 files covered. (94.44%)

121 existing lines in 4 files now uncovered.

56462 of 65871 relevant lines covered (85.72%)

44576043.34 hits per line

Source File
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78.26

/src/physics_common.cpp

#include "openmc/physics_common.h"

#include "openmc/random_lcg.h"
#include "openmc/settings.h"

namespace openmc {

//==============================================================================
// RUSSIAN_ROULETTE
//==============================================================================

void russian_roulette(Particle& p, double weight_survive)
{
  if (weight_survive * prn(p.current_seed()) < p.wgt()) {
    p.wgt() = weight_survive;
  } else {
    p.wgt() = 0.;
  }
}

void apply_russian_roulette(Particle& p)
{
  // Exit if survival biasing is turned off
  if (!settings::survival_biasing)
    return;

  // if survival normalization is on, use normalized weight cutoff and
  // normalized weight survive
  if (settings::survival_normalization) {
    if (p.wgt() < settings::weight_cutoff * p.wgt_born()) {
      russian_roulette(p, settings::weight_survive * p.wgt_born());
    }
  } else if (p.wgt() < settings::weight_cutoff) {
    russian_roulette(p, settings::weight_survive);
  }
}
} // namespace openmc

1	#include "openmc/physics_common.h"
2
3	#include "openmc/random_lcg.h"
4	#include "openmc/settings.h"
5
6	namespace openmc {
7
8	//==============================================================================
9	// RUSSIAN_ROULETTE
10	//==============================================================================
11
12	void russian_roulette(Particle& p, double weight_survive)	1,510,499✔
13	{
14	if (weight_survive * prn(p.current_seed()) < p.wgt()) {	1,510,499✔
15	p.wgt() = weight_survive;	285,026✔
16	} else {
17	p.wgt() = 0.;	1,225,473✔
18	}
19	}	1,510,499✔
20
21	void apply_russian_roulette(Particle& p)	2,147,483,647✔
22	{
23	// Exit if survival biasing is turned off
24	if (!settings::survival_biasing)	2,147,483,647✔
25	return;	2,147,483,647✔
26
27	// if survival normalization is on, use normalized weight cutoff and
28	// normalized weight survive
29	if (settings::survival_normalization) {	4,290,190!
NEW 30	if (p.wgt() < settings::weight_cutoff * p.wgt_born()) {	×
NEW 31	russian_roulette(p, settings::weight_survive * p.wgt_born());	×
32	}
33	} else if (p.wgt() < settings::weight_cutoff) {	4,290,190✔
34	russian_roulette(p, settings::weight_survive);	181,210✔
35	}
36	}
37	} // namespace openmc

openmc-dev / openmc / 21960815265

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