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refactor seed and seed aray variable names

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This commit is contained in:
John Tramm 2019-12-05 19:50:31 +00:00
parent 428bab4fd2
commit 0602ddd8a3
46 changed files with 336 additions and 336 deletions
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2
include/openmc/angle_energy.h
View file

@ -15,7 +15,7 @@ namespace openmc {
class AngleEnergy {
public:
virtual void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const = 0;
uint64_t* seed) const = 0;
virtual ~AngleEnergy() = default;
};

34
include/openmc/distribution.h
View file

@ -21,7 +21,7 @@ namespace openmc {
class Distribution {
public:
virtual ~Distribution() = default;
virtual double sample(uint64_t* prn_seed) const = 0;
virtual double sample(uint64_t* seed) const = 0;
};
//==============================================================================
@ -34,9 +34,9 @@ public:
Discrete(const double* x, const double* p, int n);
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
// Properties
const std::vector<double>& x() const { return x_; }
@ -59,9 +59,9 @@ public:
Uniform(double a, double b) : a_{a}, b_{b} {};
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
private:
double a_; //!< Lower bound of distribution
double b_; //!< Upper bound of distribution
@ -77,9 +77,9 @@ public:
Maxwell(double theta) : theta_{theta} { };
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
private:
double theta_; //!< Factor in exponential [eV]
};
@ -94,9 +94,9 @@ public:
Watt(double a, double b) : a_{a}, b_{b} { };
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
private:
double a_; //!< Factor in exponential [eV]
double b_; //!< Factor in square root [1/eV]
@ -112,9 +112,9 @@ public:
Normal(double mean_value, double std_dev) : mean_value_{mean_value}, std_dev_{std_dev} { };
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
private:
double mean_value_; //!< middle of distribution [eV]
double std_dev_; //!< standard deviation [eV]
@ -131,9 +131,9 @@ public:
Muir(double e0, double m_rat, double kt) : e0_{e0}, m_rat_{m_rat}, kt_{kt} { };
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
private:
// example DT fusion m_rat = 5 (D = 2 + T = 3)
// ion temp = 20000 eV
@ -154,9 +154,9 @@ public:
const double* c=nullptr);
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
// x property
std::vector<double>& x() { return x_; }
@ -185,9 +185,9 @@ public:
Equiprobable(const double* x, int n) : x_{x, x+n} { };
//! Sample a value from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled value
double sample(uint64_t* prn_seed) const;
double sample(uint64_t* seed) const;
private:
std::vector<double> x_; //! Possible outcomes
};

4
include/openmc/distribution_angle.h
View file

@ -23,9 +23,9 @@ public:
//! Sample an angle given an incident particle energy
//! \param[in] E Particle energy in [eV]
//! \param[inout] prn_seed pseudorandom number seed pointer
//! \param[inout] seed pseudorandom number seed pointer
//! \return Cosine of the angle in the range [-1,1]
double sample(double E, uint64_t* prn_seed) const;
double sample(double E, uint64_t* seed) const;
//! Determine whether angle distribution is empty
//! \return Whether distribution is empty

26
include/openmc/distribution_energy.h
View file

@ -22,7 +22,7 @@ namespace openmc {
class EnergyDistribution {
public:
virtual double sample(double E, uint64_t* prn_seed) const = 0;
virtual double sample(double E, uint64_t* seed) const = 0;
virtual ~EnergyDistribution() = default;
};
@ -36,9 +36,9 @@ public:
//! Sample energy distribution
//! \param[in] E Incident particle energy in [eV]
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
//! \return Sampled energy in [eV]
double sample(double E, uint64_t* prn_seed) const;
double sample(double E, uint64_t* seed) const;
private:
int primary_flag_; //!< Indicator of whether the photon is a primary or
//!< non-primary photon.
@ -56,9 +56,9 @@ public:
//! Sample energy distribution
//! \param[in] E Incident particle energy in [eV]
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
//! \return Sampled energy in [eV]
double sample(double E, uint64_t* prn_seed) const;
double sample(double E, uint64_t* seed) const;
private:
double threshold_; //!< Energy threshold in lab, (A + 1)/A * |Q|
double mass_ratio_; //!< (A/(A+1))^2
@ -76,9 +76,9 @@ public:
//! Sample energy distribution
//! \param[in] E Incident particle energy in [eV]
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
//! \return Sampled energy in [eV]
double sample(double E, uint64_t* prn_seed) const;
double sample(double E, uint64_t* seed) const;
private:
//! Outgoing energy for a single incoming energy
struct CTTable {
@ -106,9 +106,9 @@ public:
//! Sample energy distribution
//! \param[in] E Incident particle energy in [eV]
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
//! \return Sampled energy in [eV]
double sample(double E, uint64_t* prn_seed) const;
double sample(double E, uint64_t* seed) const;
private:
Tabulated1D theta_; //!< Incoming energy dependent parameter
double u_; //!< Restriction energy
@ -125,9 +125,9 @@ public:
//! Sample energy distribution
//! \param[in] E Incident particle energy in [eV]
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
//! \return Sampled energy in [eV]
double sample(double E, uint64_t* prn_seed) const;
double sample(double E, uint64_t* seed) const;
private:
Tabulated1D theta_; //!< Incoming energy dependent parameter
double u_; //!< Restriction energy
@ -144,9 +144,9 @@ public:
//! Sample energy distribution
//! \param[in] E Incident particle energy in [eV]
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
//! \return Sampled energy in [eV]
double sample(double E, uint64_t* prn_seed) const;
double sample(double E, uint64_t* seed) const;
private:
Tabulated1D a_; //!< Energy-dependent 'a' parameter
Tabulated1D b_; //!< Energy-dependent 'b' parameter

16
include/openmc/distribution_multi.h
View file

@ -23,9 +23,9 @@ public:
virtual ~UnitSphereDistribution() = default;
//! Sample a direction from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Direction sampled
virtual Direction sample(uint64_t* prn_seed) const = 0;
virtual Direction sample(uint64_t* seed) const = 0;
Direction u_ref_ {0.0, 0.0, 1.0}; //!< reference direction
};
@ -40,9 +40,9 @@ public:
explicit PolarAzimuthal(pugi::xml_node node);
//! Sample a direction from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Direction sampled
Direction sample(uint64_t* prn_seed) const;
Direction sample(uint64_t* seed) const;
private:
UPtrDist mu_; //!< Distribution of polar angle
UPtrDist phi_; //!< Distribution of azimuthal angle
@ -57,9 +57,9 @@ public:
Isotropic() { };
//! Sample a direction from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled direction
Direction sample(uint64_t* prn_seed) const;
Direction sample(uint64_t* seed) const;
};
//==============================================================================
@ -72,9 +72,9 @@ public:
explicit Monodirectional(pugi::xml_node node) : UnitSphereDistribution{node} { };
//! Sample a direction from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled direction
Direction sample(uint64_t* prn_seed) const;
Direction sample(uint64_t* seed) const;
};
using UPtrAngle = std::unique_ptr<UnitSphereDistribution>;

18
include/openmc/distribution_spatial.h
View file

@ -17,7 +17,7 @@ public:
virtual ~SpatialDistribution() = default;
//! Sample a position from the distribution
virtual Position sample(uint64_t* prn_seed) const = 0;
virtual Position sample(uint64_t* seed) const = 0;
};
//==============================================================================
@ -29,9 +29,9 @@ public:
explicit CartesianIndependent(pugi::xml_node node);
//! Sample a position from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled position
Position sample(uint64_t* prn_seed) const;
Position sample(uint64_t* seed) const;
private:
UPtrDist x_; //!< Distribution of x coordinates
UPtrDist y_; //!< Distribution of y coordinates
@ -47,9 +47,9 @@ public:
explicit SphericalIndependent(pugi::xml_node node);
//! Sample a position from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled position
Position sample(uint64_t* prn_seed) const;
Position sample(uint64_t* seed) const;
private:
UPtrDist r_; //!< Distribution of r coordinates
UPtrDist theta_; //!< Distribution of theta coordinates
@ -66,9 +66,9 @@ public:
explicit SpatialBox(pugi::xml_node node, bool fission=false);
//! Sample a position from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled position
Position sample(uint64_t* prn_seed) const;
Position sample(uint64_t* seed) const;
// Properties
bool only_fissionable() const { return only_fissionable_; }
@ -89,9 +89,9 @@ public:
explicit SpatialPoint(pugi::xml_node node);
//! Sample a position from the distribution
//! \param prn_seed Pseudorandom number seed pointer
//! \param seed Pseudorandom number seed pointer
//! \return Sampled position
Position sample(uint64_t* prn_seed) const;
Position sample(uint64_t* seed) const;
private:
Position r_; //!< Single position at which sites are generated
};

22
include/openmc/math_functions.h
View file

@ -129,14 +129,14 @@ extern "C" void calc_zn_rad(int n, double rho, double zn_rad[]);
//! \param mu The cosine of angle in lab or CM
//! \param phi The azimuthal angle; will randomly chosen angle if a nullptr
//! is passed
//! \param prn_seed A pointer to the pseudorandom seed
//! \param seed A pointer to the pseudorandom seed
//==============================================================================
extern "C" void rotate_angle_c(double uvw[3], double mu, const double* phi,
uint64_t* prn_seed);
uint64_t* seed);
Direction rotate_angle(Direction u, double mu, const double* phi,
uint64_t* prn_seed);
uint64_t* seed);
//==============================================================================
//! Samples an energy from the Maxwell fission distribution based on a direct
@ -147,11 +147,11 @@ Direction rotate_angle(Direction u, double mu, const double* phi,
//! rule C64 in the Monte Carlo Sampler LA-9721-MS.
//!
//! \param T The tabulated function of the incoming energy
//! \param prn_seed A pointer to the pseudorandom seed
//! \param seed A pointer to the pseudorandom seed
//! \return The sampled outgoing energy
//==============================================================================
extern "C" double maxwell_spectrum(double T, uint64_t* prn_seed);
extern "C" double maxwell_spectrum(double T, uint64_t* seed);
//==============================================================================
//! Samples an energy from a Watt energy-dependent fission distribution.
@ -163,11 +163,11 @@ extern "C" double maxwell_spectrum(double T, uint64_t* prn_seed);
//!
//! \param a Watt parameter a
//! \param b Watt parameter b
//! \param prn_seed A pointer to the pseudorandom seed
//! \param seed A pointer to the pseudorandom seed
//! \return The sampled outgoing energy
//==============================================================================
extern "C" double watt_spectrum(double a, double b, uint64_t* prn_seed);
extern "C" double watt_spectrum(double a, double b, uint64_t* seed);
//==============================================================================
//! Samples an energy from the Gaussian energy-dependent fission distribution.
@ -180,11 +180,11 @@ extern "C" double watt_spectrum(double a, double b, uint64_t* prn_seed);
//!
//! @param mean mean of the Gaussian distribution
//! @param std_dev standard deviation of the Gaussian distribution
//! @param prn_seed A pointer to the pseudorandom seed
//! @param seed A pointer to the pseudorandom seed
//! @result The sampled outgoing energy
//==============================================================================
extern "C" double normal_variate(double mean, double std_dev, uint64_t* prn_seed);
extern "C" double normal_variate(double mean, double std_dev, uint64_t* seed);
//==============================================================================
//! Samples an energy from the Muir (Gaussian) energy-dependent distribution.
@ -196,12 +196,12 @@ extern "C" double normal_variate(double mean, double std_dev, uint64_t* prn_seed
//! @param e0 peak neutron energy [eV]
//! @param m_rat ratio of the fusion reactants to AMU
//! @param kt the ion temperature of the reactants [eV]
//! @param prn_seed A pointer to the pseudorandom seed
//! @param seed A pointer to the pseudorandom seed
//! @result The sampled outgoing energy
//==============================================================================
extern "C" double muir_spectrum(double e0, double m_rat, double kt,
uint64_t* prn_seed);
uint64_t* seed);
//==============================================================================
//! Doppler broadens the windowed multipole curvefit.

8
include/openmc/mgxs.h
View file

@ -154,9 +154,9 @@ class Mgxs {
//! @param gin Incoming energy group.
//! @param dg Sampled delayed group index.
//! @param gout Sampled outgoing energy group.
//! @param prn_seed Pseudorandom seed pointer
//! @param seed Pseudorandom seed pointer
void
sample_fission_energy(int gin, int& dg, int& gout, uint64_t* prn_seed);
sample_fission_energy(int gin, int& dg, int& gout, uint64_t* seed);
//! \brief Samples the outgoing energy and angle from a scatter event.
//!
@ -164,9 +164,9 @@ class Mgxs {
//! @param gout Sampled outgoing energy group.
//! @param mu Sampled cosine of the change-in-angle.
//! @param wgt Weight of the particle to be adjusted.
//! @param prn_seed Pseudorandom seed pointer.
//! @param seed Pseudorandom seed pointer.
void
sample_scatter(int gin, int& gout, double& mu, double& wgt, uint64_t* prn_seed);
sample_scatter(int gin, int& gout, double& mu, double& wgt, uint64_t* seed);
//! \brief Calculates cross section quantities needed for tracking.
//!

4
include/openmc/particle.h
View file

@ -292,8 +292,8 @@ public:
bool write_track_ {false};
// Current PRNG state
uint64_t prn_seeds_[N_STREAMS]; // current seeds
int stream_; // current RNG stream
uint64_t seeds_[N_STREAMS]; // current seeds
int stream_; // current RNG stream
};
} // namespace openmc

10
include/openmc/photon.h
View file

@ -45,12 +45,12 @@ public:
void calculate_xs(Particle& p) const;
void compton_scatter(double alpha, bool doppler, double* alpha_out,
double* mu, int* i_shell, uint64_t* prn_seed) const;
double* mu, int* i_shell, uint64_t* seed) const;
double rayleigh_scatter(double alpha, uint64_t* prn_seed) const;
double rayleigh_scatter(double alpha, uint64_t* seed) const;
void pair_production(double alpha, double* E_electron, double* E_positron,
double* mu_electron, double* mu_positron, uint64_t* prn_seed) const;
double* mu_electron, double* mu_positron, uint64_t* seed) const;
void atomic_relaxation(const ElectronSubshell& shell, Particle& p) const;
@ -97,14 +97,14 @@ public:
private:
void compton_doppler(double alpha, double mu, double* E_out, int* i_shell,
uint64_t* prn_seed) const;
uint64_t* seed) const;
};
//==============================================================================
// Non-member functions
//==============================================================================
std::pair<double, double> klein_nishina(double alpha, uint64_t* prn_seed);
std::pair<double, double> klein_nishina(double alpha, uint64_t* seed);
void free_memory_photon();

6
include/openmc/physics.h
View file

@ -72,17 +72,17 @@ void sab_scatter(int i_nuclide, int i_sab, Particle* p);
//! dependence of cross sections in treating resonance elastic scattering such
//! as the DBRC and a new, accelerated scheme are also implemented here.
Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
Direction v_neut, double xs_eff, double kT, uint64_t* prn_seed);
Direction v_neut, double xs_eff, double kT, uint64_t* seed);
//! samples a target velocity based on the free gas scattering formulation, used
//! by most Monte Carlo codes, in which cross section is assumed to be constant
//! in energy. Excellent documentation for this method can be found in
//! FRA-TM-123.
Direction sample_cxs_target_velocity(double awr, double E, Direction u, double kT,
uint64_t* prn_seed);
uint64_t* seed);
void sample_fission_neutron(int i_nuclide, const Reaction* rx, double E_in,
Particle::Bank* site, uint64_t* prn_seed);
Particle::Bank* site, uint64_t* seed);
//! handles all reactions with a single secondary neutron (other than fission),
//! i.e. level scattering, (n,np), (n,na), etc.

18
include/openmc/random_lcg.h
View file

@ -21,11 +21,11 @@ constexpr int64_t DEFAULT_SEED {1};
//==============================================================================
//! Generate a pseudo-random number using a linear congruential generator.
//! @param prn_seed Pseudorandom number seed pointer
//! @param seed Pseudorandom number seed pointer
//! @return A random number between 0 and 1
//==============================================================================
double prn(uint64_t* prn_seed);
double prn(uint64_t* seed);
//==============================================================================
//! Generate a random number which is 'n' times ahead from the current seed.
@ -34,11 +34,11 @@ double prn(uint64_t* prn_seed);
//! `prn()` 'n' times, though without the side effect of altering the RNG
//! state.
//! @param n The number of RNG seeds to skip ahead by
//! @param prn_seed Pseudorandom number seed
//! @param seed Pseudorandom number seed
//! @return A random number between 0 and 1
//==============================================================================
double future_prn(int64_t n, uint64_t prn_seed);
double future_prn(int64_t n, uint64_t seed);
//==============================================================================
//! Set a RNG seed to a unique value based on a unique particle ID by striding
@ -55,21 +55,21 @@ uint64_t init_seed(int64_t id, int offset);
//! Set the RNG seeds to unique values based on the ID of the particle. This
//! function initializes the seeds for all RNG streams of the particle via
//! striding.
//! @param prn_seeds Pseudorandom number seed array
//! @param seeds Pseudorandom number seed array
//! @param id The particle ID
//==============================================================================
void init_particle_seeds(int64_t id, uint64_t* prn_seeds);
void init_particle_seeds(int64_t id, uint64_t* seeds);
//==============================================================================
//! Advance the random number seed 'n' times from the current seed. This
//! differs from the future_prn() function in that this function does alter
//! the RNG state.
//! @param prn_seed Pseudorandom number seed pointer
//! @param seed Pseudorandom number seed pointer
//! @param n The number of RNG seeds to skip ahead by
//==============================================================================
void advance_prn_seed(int64_t n, uint64_t* prn_seed);
void advance_prn_seed(int64_t n, uint64_t* seed);
//==============================================================================
//! Advance a random number seed 'n' times.
@ -81,7 +81,7 @@ void advance_prn_seed(int64_t n, uint64_t* prn_seed);
//! @param seed The starting to seed to advance from
//==============================================================================
uint64_t future_seed(uint64_t n, uint64_t prn_seed);
uint64_t future_seed(uint64_t n, uint64_t seed);
//==============================================================================
// API FUNCTIONS

4
include/openmc/reaction_product.h
View file

@ -42,8 +42,8 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom seed pointer
void sample(double E_in, double& E_out, double& mu, uint64_t* prn_seed) const;
//! \param[inout] seed Pseudorandom seed pointer
void sample(double E_in, double& E_out, double& mu, uint64_t* seed) const;
Particle::Type particle_; //!< Particle type
EmissionMode emission_mode_; //!< Emission mode

14
include/openmc/scattdata.h
View file

@ -65,9 +65,9 @@ class ScattData {
//! @param gout Sampled outgoing energy group.
//! @param mu Sampled cosine of the change-in-angle.
//! @param wgt Weight of the particle to be adjusted.
//! @param prn_seed Pseudorandom number seed pointer
//! @param seed Pseudorandom number seed pointer
virtual void
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* prn_seed) = 0;
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* seed) = 0;
//! \brief Initializes the ScattData object from a given scatter and
//! multiplicity matrix.
@ -110,9 +110,9 @@ class ScattData {
//! @param gin Incoming energy group.
//! @param gout Sampled outgoing energy group.
//! @param i_gout Sampled outgoing energy group index.
//! @param prn_seed Pseudorandom number seed pointer
//! @param seed Pseudorandom number seed pointer
void
sample_energy(int gin, int& gout, int& i_gout, uint64_t* prn_seed);
sample_energy(int gin, int& gout, int& i_gout, uint64_t* seed);
//! \brief Provides a cross section value given certain parameters
//!
@ -163,7 +163,7 @@ class ScattDataLegendre: public ScattData {
calc_f(int gin, int gout, double mu);
void
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* prn_seed);
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* seed);
size_t
get_order() {return dist[0][0].size() - 1;};
@ -199,7 +199,7 @@ class ScattDataHistogram: public ScattData {
calc_f(int gin, int gout, double mu);
void
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* prn_seed);
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* seed);
size_t
get_order() {return dist[0][0].size();};
@ -240,7 +240,7 @@ class ScattDataTabular: public ScattData {
calc_f(int gin, int gout, double mu);
void
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* prn_seed);
sample(int gin, int& gout, double& mu, double& wgt, uint64_t* seed);
size_t
get_order() {return dist[0][0].size();};

4
include/openmc/secondary_correlated.h
View file

@ -38,9 +38,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
// energy property
std::vector<double>& energy() { return energy_; }

4
include/openmc/secondary_kalbach.h
View file

@ -29,9 +29,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
private:
//! Outgoing energy/angle at a single incoming energy
struct KMTable {

4
include/openmc/secondary_nbody.h
View file

@ -24,9 +24,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
private:
int n_bodies_; //!< Number of particles distributed
double mass_ratio_; //!< Total mass of particles [neutron mass]

20
include/openmc/secondary_thermal.h
View file

@ -31,9 +31,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
private:
const CoherentElasticXS& xs_; //!< Coherent elastic scattering cross section
};
@ -53,9 +53,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
private:
double debye_waller_;
};
@ -76,9 +76,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
private:
const std::vector<double>& energy_; //!< Energies at which cosines are tabulated
xt::xtensor<double, 2> mu_out_; //!< Cosines for each incident energy
@ -100,9 +100,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
private:
const std::vector<double>& energy_; //!< Incident energies
xt::xtensor<double, 2> energy_out_; //!< Outgoing energies for each incident energy
@ -125,9 +125,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom number seed pointer
//! \param[inout] seed Pseudorandom number seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
private:
//! Secondary energy/angle distribution
struct DistEnergySab {

4
include/openmc/secondary_uncorrelated.h
View file

@ -29,9 +29,9 @@ public:
//! \param[in] E_in Incoming energy in [eV]
//! \param[out] E_out Outgoing energy in [eV]
//! \param[out] mu Outgoing cosine with respect to current direction
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
void sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const override;
uint64_t* seed) const override;
// Accessors
AngleDistribution& angle() { return angle_; }

8
include/openmc/source.h
View file

@ -38,9 +38,9 @@ public:
explicit SourceDistribution(pugi::xml_node node);
//! Sample from the external source distribution
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
//! \return Sampled site
Particle::Bank sample(uint64_t* prn_seed) const;
Particle::Bank sample(uint64_t* seed) const;
// Properties
double strength() const { return strength_; }
@ -61,9 +61,9 @@ extern "C" void initialize_source();
//! Sample a site from all external source distributions in proportion to their
//! source strength
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
//! \return Sampled source site
Particle::Bank sample_external_source(uint64_t* prn_seed);
Particle::Bank sample_external_source(uint64_t* seed);
//! Fill source bank at end of generation for fixed source simulations
void fill_source_bank_fixedsource();

2
include/openmc/surface.h
View file

@ -117,7 +117,7 @@ public:
virtual Direction reflect(Position r, Direction u) const;
virtual Direction diffuse_reflect(Position r, Direction u,
uint64_t* prn_seed) const;
uint64_t* seed) const;
//! Evaluate the equation describing the surface.
//!

8
include/openmc/thermal.h
View file

@ -64,9 +64,9 @@ public:
//! \param[in] E_in Incident neutron energy in [eV]
//! \param[out] E_out Outgoing neutron energy in [eV]
//! \param[out] mu Outgoing scattering angle cosine
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
void sample(const NuclideMicroXS& micro_xs, double E_in,
double* E_out, double* mu, uint64_t* prn_seed);
double* E_out, double* mu, uint64_t* seed);
private:
struct Reaction {
// Default constructor
@ -101,9 +101,9 @@ public:
//! \param[out] i_temp corresponding temperature index
//! \param[out] elastic Thermal elastic scattering cross section
//! \param[out] inelastic Thermal inelastic scattering cross section
//! \param[inout] prn_seed Pseudorandom seed pointer
//! \param[inout] seed Pseudorandom seed pointer
void calculate_xs(double E, double sqrtkT, int* i_temp, double* elastic,
double* inelastic, uint64_t* prn_seed) const;
double* inelastic, uint64_t* seed) const;
//! Determine whether table applies to a particular nuclide
//!

32
src/distribution.cpp
View file

@ -35,11 +35,11 @@ Discrete::Discrete(const double* x, const double* p, int n)
normalize();
}
double Discrete::sample(uint64_t* prn_seed) const
double Discrete::sample(uint64_t* seed) const
{
int n = x_.size();
if (n > 1) {
double xi = prn(prn_seed);
double xi = prn(seed);
double c = 0.0;
for (int i = 0; i < n; ++i) {
c += p_[i];
@ -74,9 +74,9 @@ Uniform::Uniform(pugi::xml_node node)
b_ = params.at(1);
}
double Uniform::sample(uint64_t* prn_seed) const
double Uniform::sample(uint64_t* seed) const
{
return a_ + prn(prn_seed)*(b_ - a_);
return a_ + prn(seed)*(b_ - a_);
}
//==============================================================================
@ -88,9 +88,9 @@ Maxwell::Maxwell(pugi::xml_node node)
theta_ = std::stod(get_node_value(node, "parameters"));
}
double Maxwell::sample(uint64_t* prn_seed) const
double Maxwell::sample(uint64_t* seed) const
{
return maxwell_spectrum(theta_, prn_seed);
return maxwell_spectrum(theta_, seed);
}
//==============================================================================
@ -108,9 +108,9 @@ Watt::Watt(pugi::xml_node node)
b_ = params.at(1);
}
double Watt::sample(uint64_t* prn_seed) const
double Watt::sample(uint64_t* seed) const
{
return watt_spectrum(a_, b_, prn_seed);
return watt_spectrum(a_, b_, seed);
}
//==============================================================================
@ -127,9 +127,9 @@ Normal::Normal(pugi::xml_node node)
std_dev_ = params.at(1);
}
double Normal::sample(uint64_t* prn_seed) const
double Normal::sample(uint64_t* seed) const
{
return normal_variate(mean_value_, std_dev_, prn_seed);
return normal_variate(mean_value_, std_dev_, seed);
}
//==============================================================================
@ -147,9 +147,9 @@ Muir::Muir(pugi::xml_node node)
kt_ = params.at(2);
}
double Muir::sample(uint64_t* prn_seed) const
double Muir::sample(uint64_t* seed) const
{
return muir_spectrum(e0_, m_rat_, kt_, prn_seed);
return muir_spectrum(e0_, m_rat_, kt_, seed);
}
//==============================================================================
@ -220,10 +220,10 @@ void Tabular::init(const double* x, const double* p, std::size_t n, const double
}
}
double Tabular::sample(uint64_t* prn_seed) const
double Tabular::sample(uint64_t* seed) const
{
// Sample value of CDF
double c = prn(prn_seed);
double c = prn(seed);
// Find first CDF bin which is above the sampled value
double c_i = c_[0];
@ -263,11 +263,11 @@ double Tabular::sample(uint64_t* prn_seed) const
// Equiprobable implementation
//==============================================================================
double Equiprobable::sample(uint64_t* prn_seed) const
double Equiprobable::sample(uint64_t* seed) const
{
std::size_t n = x_.size();
double r = prn(prn_seed);
double r = prn(seed);
int i = std::floor((n - 1)*r);
double xl = x_[i];

6
src/distribution_angle.cpp
View file

@ -62,7 +62,7 @@ AngleDistribution::AngleDistribution(hid_t group)
}
}
double AngleDistribution::sample(double E, uint64_t* prn_seed) const
double AngleDistribution::sample(double E, uint64_t* seed) const
{
// Determine number of incoming energies
auto n = energy_.size();
@ -83,10 +83,10 @@ double AngleDistribution::sample(double E, uint64_t* prn_seed) const
}
// Sample between the ith and (i+1)th bin
if (r > prn(prn_seed)) ++i;
if (r > prn(seed)) ++i;
// Sample i-th distribution
double mu = distribution_[i]->sample(prn_seed);
double mu = distribution_[i]->sample(seed);
// Make sure mu is in range [-1,1] and return
if (std::abs(mu) > 1.0) mu = std::copysign(1.0, mu);

22
src/distribution_energy.cpp
View file

@ -25,7 +25,7 @@ DiscretePhoton::DiscretePhoton(hid_t group)
read_attribute(group, "atomic_weight_ratio", A_);
}
double DiscretePhoton::sample(double E, uint64_t* prn_seed) const
double DiscretePhoton::sample(double E, uint64_t* seed) const
{
if (primary_flag_ == 2) {
return energy_ + A_/(A_+ 1)*E;
@ -44,7 +44,7 @@ LevelInelastic::LevelInelastic(hid_t group)
read_attribute(group, "mass_ratio", mass_ratio_);
}
double LevelInelastic::sample(double E, uint64_t* prn_seed ) const
double LevelInelastic::sample(double E, uint64_t* seed) const
{
return mass_ratio_*(E - threshold_);
}
@ -146,7 +146,7 @@ ContinuousTabular::ContinuousTabular(hid_t group)
} // incoming energies
}
double ContinuousTabular::sample(double E, uint64_t* prn_seed) const
double ContinuousTabular::sample(double E, uint64_t* seed) const
{
// Read number of interpolation regions and incoming energies
bool histogram_interp;
@ -177,7 +177,7 @@ double ContinuousTabular::sample(double E, uint64_t* prn_seed) const
if (histogram_interp) {
l = i;
} else {
l = r > prn(prn_seed) ? i + 1 : i;
l = r > prn(seed) ? i + 1 : i;
}
// Interpolation for energy E1 and EK
@ -197,7 +197,7 @@ double ContinuousTabular::sample(double E, uint64_t* prn_seed) const
// Determine outgoing energy bin
n_energy_out = distribution_[l].e_out.size();
n_discrete = distribution_[l].n_discrete;
double r1 = prn(prn_seed);
double r1 = prn(seed);
double c_k = distribution_[l].c[0];
int k = 0;
int end = n_energy_out - 2;
@ -275,14 +275,14 @@ MaxwellEnergy::MaxwellEnergy(hid_t group)
close_dataset(dset);
}
double MaxwellEnergy::sample(double E, uint64_t* prn_seed) const
double MaxwellEnergy::sample(double E, uint64_t* seed) const
{
// Get temperature corresponding to incoming energy
double theta = theta_(E);
while (true) {
// Sample maxwell fission spectrum
double E_out = maxwell_spectrum(theta, prn_seed);
double E_out = maxwell_spectrum(theta, seed);
// Accept energy based on restriction energy
if (E_out <= E - u_) return E_out;
@ -301,7 +301,7 @@ Evaporation::Evaporation(hid_t group)
close_dataset(dset);
}
double Evaporation::sample(double E, uint64_t* prn_seed) const
double Evaporation::sample(double E, uint64_t* seed) const
{
// Get temperature corresponding to incoming energy
double theta = theta_(E);
@ -313,7 +313,7 @@ double Evaporation::sample(double E, uint64_t* prn_seed) const
// density function
double x;
while (true) {
x = -std::log((1.0 - v*prn(prn_seed))*(1.0 - v*prn(prn_seed)));
x = -std::log((1.0 - v*prn(seed))*(1.0 - v*prn(seed)));
if (x <= y) break;
}
@ -338,7 +338,7 @@ WattEnergy::WattEnergy(hid_t group)
close_dataset(dset);
}
double WattEnergy::sample(double E, uint64_t* prn_seed) const
double WattEnergy::sample(double E, uint64_t* seed) const
{
// Determine Watt parameters at incident energy
double a = a_(E);
@ -346,7 +346,7 @@ double WattEnergy::sample(double E, uint64_t* prn_seed) const
while (true) {
// Sample energy-dependent Watt fission spectrum
double E_out = watt_spectrum(a, b, prn_seed);
double E_out = watt_spectrum(a, b, seed);
// Accept energy based on restriction energy
if (E_out <= E - u_) return E_out;

16
src/distribution_multi.cpp
View file

@ -53,31 +53,31 @@ PolarAzimuthal::PolarAzimuthal(pugi::xml_node node)
}
}
Direction PolarAzimuthal::sample(uint64_t* prn_seed) const
Direction PolarAzimuthal::sample(uint64_t* seed) const
{
// Sample cosine of polar angle
double mu = mu_->sample(prn_seed);
double mu = mu_->sample(seed);
if (mu == 1.0) return u_ref_;
// Sample azimuthal angle
double phi = phi_->sample(prn_seed);
double phi = phi_->sample(seed);
// If the reference direction is along the z-axis, rotate the aziumthal angle
// to match spherical coordinate conventions.
// TODO: apply this change directly to rotate_angle
if (u_ref_.x == 0 && u_ref_.y == 0) phi += 0.5*PI;
return rotate_angle(u_ref_, mu, &phi, prn_seed);
return rotate_angle(u_ref_, mu, &phi, seed);
}
//==============================================================================
// Isotropic implementation
//==============================================================================
Direction Isotropic::sample(uint64_t* prn_seed) const
Direction Isotropic::sample(uint64_t* seed) const
{
double phi = 2.0*PI*prn(prn_seed);
double mu = 2.0*prn(prn_seed) - 1.0;
double phi = 2.0*PI*prn(seed);
double mu = 2.0*prn(seed) - 1.0;
return {mu, std::sqrt(1.0 - mu*mu) * std::cos(phi),
std::sqrt(1.0 - mu*mu) * std::sin(phi)};
}
@ -86,7 +86,7 @@ Direction Isotropic::sample(uint64_t* prn_seed) const
// Monodirectional implementation
//==============================================================================
Direction Monodirectional::sample(uint64_t* prn_seed) const
Direction Monodirectional::sample(uint64_t* seed) const
{
return u_ref_;
}

18
src/distribution_spatial.cpp
View file

@ -46,9 +46,9 @@ CartesianIndependent::CartesianIndependent(pugi::xml_node node)
}
}
Position CartesianIndependent::sample(uint64_t* prn_seed) const
Position CartesianIndependent::sample(uint64_t* seed) const
{
return {x_->sample(prn_seed), y_->sample(prn_seed), z_->sample(prn_seed)};
return {x_->sample(seed), y_->sample(seed), z_->sample(seed)};
}
//==============================================================================
@ -107,11 +107,11 @@ SphericalIndependent::SphericalIndependent(pugi::xml_node node)
}
Position SphericalIndependent::sample(uint64_t* prn_seed) const
Position SphericalIndependent::sample(uint64_t* seed) const
{
double r = r_->sample(prn_seed);
double theta = theta_->sample(prn_seed);
double phi = phi_->sample(prn_seed);
double r = r_->sample(seed);
double theta = theta_->sample(seed);
double phi = phi_->sample(seed);
double x = r*sin(theta)*cos(phi) + origin_.x;
double y = r*sin(theta)*sin(phi) + origin_.y;
double z = r*cos(theta) + origin_.z;
@ -135,9 +135,9 @@ SpatialBox::SpatialBox(pugi::xml_node node, bool fission)
upper_right_ = Position{params[3], params[4], params[5]};
}
Position SpatialBox::sample(uint64_t* prn_seed) const
Position SpatialBox::sample(uint64_t* seed) const
{
Position xi {prn(prn_seed), prn(prn_seed), prn(prn_seed)};
Position xi {prn(seed), prn(seed), prn(seed)};
return lower_left_ + xi*(upper_right_ - lower_left_);
}
@ -157,7 +157,7 @@ SpatialPoint::SpatialPoint(pugi::xml_node node)
r_ = Position{params.data()};
}
Position SpatialPoint::sample(uint64_t* prn_seed) const
Position SpatialPoint::sample(uint64_t* seed) const
{
return r_;
}

34
src/math_functions.cpp
View file

@ -630,22 +630,22 @@ void calc_zn_rad(int n, double rho, double zn_rad[]) {
}
void rotate_angle_c(double uvw[3], double mu, const double* phi, uint64_t* prn_seed) {
Direction u = rotate_angle({uvw}, mu, phi, prn_seed);
void rotate_angle_c(double uvw[3], double mu, const double* phi, uint64_t* seed) {
Direction u = rotate_angle({uvw}, mu, phi, seed);
uvw[0] = u.x;
uvw[1] = u.y;
uvw[2] = u.z;
}
Direction rotate_angle(Direction u, double mu, const double* phi, uint64_t* prn_seed)
Direction rotate_angle(Direction u, double mu, const double* phi, uint64_t* seed)
{
// Sample azimuthal angle in [0,2pi) if none provided
double phi_;
if (phi != nullptr) {
phi_ = (*phi);
} else {
phi_ = 2.0*PI*prn(prn_seed);
phi_ = 2.0*PI*prn(seed);
}
// Precompute factors to save flops
@ -675,11 +675,11 @@ Direction rotate_angle(Direction u, double mu, const double* phi, uint64_t* prn_
}
double maxwell_spectrum(double T, uint64_t* prn_seed) {
double maxwell_spectrum(double T, uint64_t* seed) {
// Set the random numbers
double r1 = prn(prn_seed);
double r2 = prn(prn_seed);
double r3 = prn(prn_seed);
double r1 = prn(seed);
double r2 = prn(seed);
double r3 = prn(seed);
// determine cosine of pi/2*r
double c = std::cos(PI / 2. * r3);
@ -691,33 +691,33 @@ double maxwell_spectrum(double T, uint64_t* prn_seed) {
}
double normal_variate(double mean, double standard_deviation, uint64_t* prn_seed) {
double normal_variate(double mean, double standard_deviation, uint64_t* seed) {
// perhaps there should be a limit to the number of resamples
while ( true ) {
double v1 = 2 * prn(prn_seed) - 1.;
double v2 = 2 * prn(prn_seed) - 1.;
double v1 = 2 * prn(seed) - 1.;
double v2 = 2 * prn(seed) - 1.;
double r = std::pow(v1, 2) + std::pow(v2, 2);
double r2 = std::pow(r, 2);
if (r2 < 1) {
double z = std::sqrt(-2.0 * std::log(r2)/r2);
z *= (prn(prn_seed) <= 0.5) ? v1 : v2;
z *= (prn(seed) <= 0.5) ? v1 : v2;
return mean + standard_deviation*z;
}
}
}
double muir_spectrum(double e0, double m_rat, double kt, uint64_t* prn_seed) {
double muir_spectrum(double e0, double m_rat, double kt, uint64_t* seed) {
// note sigma here is a factor of 2 shy of equation
// 8 in https://permalink.lanl.gov/object/tr?what=info:lanl-repo/lareport/LA-05411-MS
double sigma = std::sqrt(2.*e0*kt/m_rat);
return normal_variate(e0, sigma, prn_seed);
return normal_variate(e0, sigma, seed);
}
double watt_spectrum(double a, double b, uint64_t* prn_seed) {
double w = maxwell_spectrum(a, prn_seed);
double E_out = w + 0.25 * a * a * b + (2. * prn(prn_seed) - 1.) * std::sqrt(a * a * b * w);
double watt_spectrum(double a, double b, uint64_t* seed) {
double w = maxwell_spectrum(a, seed);
double E_out = w + 0.25 * a * a * b + (2. * prn(seed) - 1.) * std::sqrt(a * a * b * w);
return E_out;
}

10
src/mgxs.cpp
View file

@ -529,7 +529,7 @@ Mgxs::get_xs(int xstype, int gin, const int* gout, const double* mu,
//==============================================================================
void
Mgxs::sample_fission_energy(int gin, int& dg, int& gout, uint64_t* prn_seed)
Mgxs::sample_fission_energy(int gin, int& dg, int& gout, uint64_t* seed)
{
// This method assumes that the temperature and angle indices are set
#ifdef _OPENMP
@ -544,8 +544,8 @@ Mgxs::sample_fission_energy(int gin, int& dg, int& gout, uint64_t* prn_seed)
double prob_prompt = xs_t->prompt_nu_fission(cache[tid].a, gin);
// sample random numbers
double xi_pd = prn(prn_seed) * nu_fission;
double xi_gout = prn(prn_seed);
double xi_pd = prn(seed) * nu_fission;
double xi_gout = prn(seed);
// Select whether the neutron is prompt or delayed
if (xi_pd <= prob_prompt) {
@ -585,7 +585,7 @@ Mgxs::sample_fission_energy(int gin, int& dg, int& gout, uint64_t* prn_seed)
//==============================================================================
void
Mgxs::sample_scatter(int gin, int& gout, double& mu, double& wgt, uint64_t* prn_seed)
Mgxs::sample_scatter(int gin, int& gout, double& mu, double& wgt, uint64_t* seed)
{
// This method assumes that the temperature and angle indices are set
// Sample the data
@ -594,7 +594,7 @@ Mgxs::sample_scatter(int gin, int& gout, double& mu, double& wgt, uint64_t* prn_
#else
int tid = 0;
#endif
xs[cache[tid].t].scatter[cache[tid].a]->sample(gin, gout, mu, wgt, prn_seed);
xs[cache[tid].t].scatter[cache[tid].a]->sample(gin, gout, mu, wgt, seed);
}
//==============================================================================

4
src/particle.cpp
View file

@ -678,7 +678,7 @@ Particle::write_restart() const
} // #pragma omp critical
}
uint64_t* Particle::current_seed() {return prn_seeds_ + stream_;}
const uint64_t* Particle::current_seed() const {return prn_seeds_ + stream_;}
uint64_t* Particle::current_seed() {return seeds_ + stream_;}
const uint64_t* Particle::current_seed() const {return seeds_ + stream_;}
} // namespace openmc

2
src/particle_restart.cpp
View file

@ -98,7 +98,7 @@ void run_particle_restart()
throw std::runtime_error{"Unexpected run mode: " +
std::to_string(previous_run_mode)};
}
init_particle_seeds(particle_seed, p.prn_seeds_);
init_particle_seeds(particle_seed, p.seeds_);
// Transport neutron
p.transport();

58
src/photon.cpp
View file

@ -290,12 +290,12 @@ PhotonInteraction::PhotonInteraction(hid_t group, int i_element)
}
void PhotonInteraction::compton_scatter(double alpha, bool doppler,
double* alpha_out, double* mu, int* i_shell, uint64_t* prn_seed) const
double* alpha_out, double* mu, int* i_shell, uint64_t* seed) const
{
double form_factor_xmax = 0.0;
while (true) {
// Sample Klein-Nishina distribution for trial energy and angle
std::tie(*alpha_out, *mu) = klein_nishina(alpha, prn_seed);
std::tie(*alpha_out, *mu) = klein_nishina(alpha, seed);
// Note that the parameter used here does not correspond exactly to the
// momentum transfer q in ENDF-102 Eq. (27.2). Rather, this is the
@ -309,10 +309,10 @@ void PhotonInteraction::compton_scatter(double alpha, bool doppler,
}
// Perform rejection on form factor
if (prn(prn_seed) < form_factor_x / form_factor_xmax) {
if (prn(seed) < form_factor_x / form_factor_xmax) {
if (doppler) {
double E_out;
this->compton_doppler(alpha, *mu, &E_out, i_shell, prn_seed);
this->compton_doppler(alpha, *mu, &E_out, i_shell, seed);
*alpha_out = E_out/MASS_ELECTRON_EV;
} else {
*i_shell = -1;
@ -323,14 +323,14 @@ void PhotonInteraction::compton_scatter(double alpha, bool doppler,
}
void PhotonInteraction::compton_doppler(double alpha, double mu,
double* E_out, int* i_shell, uint64_t* prn_seed) const
double* E_out, int* i_shell, uint64_t* seed) const
{
auto n = data::compton_profile_pz.size();
int shell; // index for shell
while (true) {
// Sample electron shell
double rn = prn(prn_seed);
double rn = prn(seed);
double c = 0.0;
for (shell = 0; shell < electron_pdf_.size(); ++shell) {
c += electron_pdf_(shell);
@ -377,7 +377,7 @@ void PhotonInteraction::compton_doppler(double alpha, double mu,
}
// Sample value on bounded cdf
c = prn(prn_seed)*c_max;
c = prn(seed)*c_max;
// Determine pz corresponding to sampled cdf value
auto cdf_shell = xt::view(profile_cdf_, shell, xt::all());
@ -418,7 +418,7 @@ void PhotonInteraction::compton_doppler(double alpha, double mu,
if (E_out1 > 0.0) {
if (E_out2 > 0.0) {
// If both are positive, pick one at random
*E_out = prn(prn_seed) < 0.5 ? E_out1 : E_out2;
*E_out = prn(seed) < 0.5 ? E_out1 : E_out2;
} else {
*E_out = E_out1;
}
@ -496,7 +496,7 @@ void PhotonInteraction::calculate_xs(Particle& p) const
xs.last_E = p.E_;
}
double PhotonInteraction::rayleigh_scatter(double alpha, uint64_t* prn_seed) const
double PhotonInteraction::rayleigh_scatter(double alpha, uint64_t* seed) const
{
double mu;
while (true) {
@ -507,7 +507,7 @@ double PhotonInteraction::rayleigh_scatter(double alpha, uint64_t* prn_seed) con
double F_max = coherent_int_form_factor_(x2_max);
// Sample cumulative distribution
double F = prn(prn_seed)*F_max;
double F = prn(seed)*F_max;
// Determine x^2 corresponding to F
const auto& x {coherent_int_form_factor_.x()};
@ -519,14 +519,14 @@ double PhotonInteraction::rayleigh_scatter(double alpha, uint64_t* prn_seed) con
// Calculate mu
mu = 1.0 - 2.0*x2/x2_max;
if (prn(prn_seed) < 0.5*(1.0 + mu*mu)) break;
if (prn(seed) < 0.5*(1.0 + mu*mu)) break;
}
return mu;
}
void PhotonInteraction::pair_production(double alpha, double* E_electron,
double* E_positron, double* mu_electron, double* mu_positron,
uint64_t* prn_seed) const
uint64_t* seed) const
{
constexpr double r[] {
122.81, 73.167, 69.228, 67.301, 64.696, 61.228,
@ -593,12 +593,12 @@ void PhotonInteraction::pair_production(double alpha, double* E_electron,
double u2 = phi2_max;
double e;
while (true) {
double rn = prn(prn_seed);
double rn = prn(seed);
// Sample the index i in (1, 2) using the point probabilities
// p(1) = u_1/(u_1 + u_2) and p(2) = u_2/(u_1 + u_2)
int i;
if (prn(prn_seed) < u1/(u1 + u2)) {
if (prn(seed) < u1/(u1 + u2)) {
i = 1;
// Sample e from pi_1 using the inverse transform method
@ -619,10 +619,10 @@ void PhotonInteraction::pair_production(double alpha, double* E_electron,
t3 = b*b*(4.0 - 4.0*t2 - 3.0*std::log(1.0 + 1.0/(b*b)));
if (i == 1) {
double phi1 = 7.0/3.0 - t1 - 6.0*t2 - t3 + t4;
if (prn(prn_seed) <= phi1/phi1_max) break;
if (prn(seed) <= phi1/phi1_max) break;
} else {
double phi2 = 11.0/6.0 - t1 - 3.0*t2 + 0.5*t3 + t4;
if (prn(prn_seed) <= phi2/phi2_max) break;
if (prn(seed) <= phi2/phi2_max) break;
}
}
@ -635,13 +635,13 @@ void PhotonInteraction::pair_production(double alpha, double* E_electron,
// p(mu) = C/(1 - beta*mu)^2 using the inverse transform method.
double beta = std::sqrt(*E_electron*(*E_electron + 2.0*MASS_ELECTRON_EV))
/ (*E_electron + MASS_ELECTRON_EV) ;
double rn = 2.0*prn(prn_seed) - 1.0;
double rn = 2.0*prn(seed) - 1.0;
*mu_electron = (rn + beta)/(rn*beta + 1.0);
// Sample the scattering angle of the positron
beta = std::sqrt(*E_positron*(*E_positron + 2.0*MASS_ELECTRON_EV))
/ (*E_positron + MASS_ELECTRON_EV);
rn = 2.0*prn(prn_seed) - 1.0;
rn = 2.0*prn(seed) - 1.0;
*mu_positron = (rn + beta)/(rn*beta + 1.0);
}
@ -711,7 +711,7 @@ void PhotonInteraction::atomic_relaxation(const ElectronSubshell& shell, Particl
// Non-member functions
//==============================================================================
std::pair<double, double> klein_nishina(double alpha, uint64_t* prn_seed)
std::pair<double, double> klein_nishina(double alpha, uint64_t* seed)
{
double alpha_out, mu;
double beta = 1.0 + 2.0*alpha;
@ -720,19 +720,19 @@ std::pair<double, double> klein_nishina(double alpha, uint64_t* prn_seed)
double t = beta/(beta + 8.0);
double x;
while (true) {
if (prn(prn_seed) < t) {
if (prn(seed) < t) {
// Left branch of flow chart
double r = 2.0*prn(prn_seed);
double r = 2.0*prn(seed);
x = 1.0 + alpha*r;
if (prn(prn_seed) < 4.0/x*(1.0 - 1.0/x)) {
if (prn(seed) < 4.0/x*(1.0 - 1.0/x)) {
mu = 1 - r;
break;
}
} else {
// Right branch of flow chart
x = beta/(1.0 + 2.0*alpha*prn(prn_seed));
x = beta/(1.0 + 2.0*alpha*prn(seed));
mu = 1.0 + (1.0 - x)/alpha;
if (prn(prn_seed) < 0.5*(mu*mu + 1.0/x)) break;
if (prn(seed) < 0.5*(mu*mu + 1.0/x)) break;
}
}
alpha_out = alpha/x;
@ -740,24 +740,24 @@ std::pair<double, double> klein_nishina(double alpha, uint64_t* prn_seed)
} else {
// Koblinger's direct method
double gamma = 1.0 - std::pow(beta, -2);
double s = prn(prn_seed)*(4.0/alpha + 0.5*gamma +
double s = prn(seed)*(4.0/alpha + 0.5*gamma +
(1.0 - (1.0 + beta)/(alpha*alpha))*std::log(beta));
if (s <= 2.0/alpha) {
// For first term, x = 1 + 2ar
// Therefore, a' = a/(1 + 2ar)
alpha_out = alpha/(1.0 + 2.0*alpha*prn(prn_seed));
alpha_out = alpha/(1.0 + 2.0*alpha*prn(seed));
} else if (s <= 4.0/alpha) {
// For third term, x = beta/(1 + 2ar)
// Therefore, a' = a(1 + 2ar)/beta
alpha_out = alpha*(1.0 + 2.0*alpha*prn(prn_seed))/beta;
alpha_out = alpha*(1.0 + 2.0*alpha*prn(seed))/beta;
} else if (s <= 4.0/alpha + 0.5*gamma) {
// For fourth term, x = 1/sqrt(1 - gamma*r)
// Therefore, a' = a*sqrt(1 - gamma*r)
alpha_out = alpha*std::sqrt(1.0 - gamma*prn(prn_seed));
alpha_out = alpha*std::sqrt(1.0 - gamma*prn(seed));
} else {
// For third term, x = beta^r
// Therefore, a' = a/beta^r
alpha_out = alpha/std::pow(beta, prn(prn_seed));
alpha_out = alpha/std::pow(beta, prn(seed));
}
// Calculate cosine of scattering angle based on basic relation

46
src/physics.cpp
View file

@ -750,7 +750,7 @@ void sab_scatter(int i_nuclide, int i_sab, Particle* p)
}
Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
Direction v_neut, double xs_eff, double kT, uint64_t* prn_seed)
Direction v_neut, double xs_eff, double kT, uint64_t* seed)
{
// check if nuclide is a resonant scatterer
ResScatMethod sampling_method;
@ -782,7 +782,7 @@ Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
case ResScatMethod::cxs:
// sample target velocity with the constant cross section (cxs) approx.
return sample_cxs_target_velocity(nuc->awr_, E, u, kT, prn_seed);
return sample_cxs_target_velocity(nuc->awr_, E, u, kT, seed);
case ResScatMethod::dbrc:
case ResScatMethod::rvs: {
@ -816,7 +816,7 @@ Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
if (i_E_up == i_E_low) {
// Handle degenerate case -- if the upper/lower bounds occur for the same
// index, then using cxs is probably a good approximation
return sample_cxs_target_velocity(nuc->awr_, E, u, kT, prn_seed);
return sample_cxs_target_velocity(nuc->awr_, E, u, kT, seed);
}
if (sampling_method == ResScatMethod::dbrc) {
@ -840,7 +840,7 @@ Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
Direction v_target;
while (true) {
// sample target velocity with the constant cross section (cxs) approx.
v_target = sample_cxs_target_velocity(nuc->awr_, E, u, kT, prn_seed);
v_target = sample_cxs_target_velocity(nuc->awr_, E, u, kT, seed);
Direction v_rel = v_neut - v_target;
E_rel = v_rel.dot(v_rel);
if (E_rel < E_up) break;
@ -849,7 +849,7 @@ Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
// perform Doppler broadening rejection correction (dbrc)
double xs_0K = nuc->elastic_xs_0K(E_rel);
double R = xs_0K / xs_max;
if (prn(prn_seed) < R) return v_target;
if (prn(seed) < R) return v_target;
}
} else if (sampling_method == ResScatMethod::rvs) {
@ -869,10 +869,10 @@ Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
while (true) {
// directly sample Maxwellian
double E_t = -kT * std::log(prn(prn_seed));
double E_t = -kT * std::log(prn(seed));
// sample a relative energy using the xs cdf
double cdf_rel = cdf_low + prn(prn_seed)*(cdf_up - cdf_low);
double cdf_rel = cdf_low + prn(seed)*(cdf_up - cdf_low);
int i_E_rel = lower_bound_index(&nuc->xs_cdf_[i_E_low-1],
&nuc->xs_cdf_[i_E_up+1], cdf_rel);
double E_rel = nuc->energy_0K_[i_E_low + i_E_rel];
@ -890,7 +890,7 @@ Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
if (std::abs(mu) < 1.0) {
// set and accept target velocity
E_t /= nuc->awr_;
return std::sqrt(E_t) * rotate_angle(u, mu, nullptr, prn_seed);
return std::sqrt(E_t) * rotate_angle(u, mu, nullptr, seed);
}
}
}
@ -901,7 +901,7 @@ Direction sample_target_velocity(const Nuclide* nuc, double E, Direction u,
}
Direction
sample_cxs_target_velocity(double awr, double E, Direction u, double kT, uint64_t* prn_seed)
sample_cxs_target_velocity(double awr, double E, Direction u, double kT, uint64_t* seed)
{
double beta_vn = std::sqrt(awr * E / kT);
double alpha = 1.0/(1.0 + std::sqrt(PI)*beta_vn/2.0);
@ -910,10 +910,10 @@ sample_cxs_target_velocity(double awr, double E, Direction u, double kT, uint64_
double mu;
while (true) {
// Sample two random numbers
double r1 = prn(prn_seed);
double r2 = prn(prn_seed);
double r1 = prn(seed);
double r2 = prn(seed);
if (prn(prn_seed) < alpha) {
if (prn(seed) < alpha) {
// With probability alpha, we sample the distribution p(y) =
// y*e^(-y). This can be done with sampling scheme C45 frmo the Monte
// Carlo sampler
@ -925,7 +925,7 @@ sample_cxs_target_velocity(double awr, double E, Direction u, double kT, uint64_
// e^(-y^2). This can be done with sampling scheme C61 from the Monte
// Carlo sampler
double c = std::cos(PI/2.0 * prn(prn_seed));
double c = std::cos(PI/2.0 * prn(seed));
beta_vt_sq = -std::log(r1) - std::log(r2)*c*c;
}
@ -933,14 +933,14 @@ sample_cxs_target_velocity(double awr, double E, Direction u, double kT, uint64_
double beta_vt = std::sqrt(beta_vt_sq);
// Sample cosine of angle between neutron and target velocity
mu = 2.0*prn(prn_seed) - 1.0;
mu = 2.0*prn(seed) - 1.0;
// Determine rejection probability
double accept_prob = std::sqrt(beta_vn*beta_vn + beta_vt_sq -
2*beta_vn*beta_vt*mu) / (beta_vn + beta_vt);
// Perform rejection sampling on vt and mu
if (prn(prn_seed) < accept_prob) break;
if (prn(seed) < accept_prob) break;
}
// Determine speed of target nucleus
@ -948,19 +948,19 @@ sample_cxs_target_velocity(double awr, double E, Direction u, double kT, uint64_
// Determine velocity vector of target nucleus based on neutron's velocity
// and the sampled angle between them
return vt * rotate_angle(u, mu, nullptr, prn_seed);
return vt * rotate_angle(u, mu, nullptr, seed);
}
void sample_fission_neutron(int i_nuclide, const Reaction* rx, double E_in, Particle::Bank* site, uint64_t* prn_seed)
void sample_fission_neutron(int i_nuclide, const Reaction* rx, double E_in, Particle::Bank* site, uint64_t* seed)
{
// Sample cosine of angle -- fission neutrons are always emitted
// isotropically. Sometimes in ACE data, fission reactions actually have
// an angular distribution listed, but for those that do, it's simply just
// a uniform distribution in mu
double mu = 2.0 * prn(prn_seed) - 1.0;
double mu = 2.0 * prn(seed) - 1.0;
// Sample azimuthal angle uniformly in [0,2*pi)
double phi = 2.0*PI*prn(prn_seed);
double phi = 2.0*PI*prn(seed);
site->u.x = mu;
site->u.y = std::sqrt(1.0 - mu*mu) * std::cos(phi);
site->u.z = std::sqrt(1.0 - mu*mu) * std::sin(phi);
@ -971,12 +971,12 @@ void sample_fission_neutron(int i_nuclide, const Reaction* rx, double E_in, Part
double nu_d = nuc->nu(E_in, Nuclide::EmissionMode::delayed);
double beta = nu_d / nu_t;
if (prn(prn_seed) < beta) {
if (prn(seed) < beta) {
// ====================================================================
// DELAYED NEUTRON SAMPLED
// sampled delayed precursor group
double xi = prn(prn_seed)*nu_d;
double xi = prn(seed)*nu_d;
double prob = 0.0;
int group;
for (group = 1; group < nuc->n_precursor_; ++group) {
@ -1000,7 +1000,7 @@ void sample_fission_neutron(int i_nuclide, const Reaction* rx, double E_in, Part
while (true) {
// sample from energy/angle distribution -- note that mu has already been
// sampled above and doesn't need to be resampled
rx->products_[group].sample(E_in, site->E, mu, prn_seed);
rx->products_[group].sample(E_in, site->E, mu, seed);
// resample if energy is greater than maximum neutron energy
constexpr int neutron = static_cast<int>(Particle::Type::neutron);
@ -1025,7 +1025,7 @@ void sample_fission_neutron(int i_nuclide, const Reaction* rx, double E_in, Part
// sample from prompt neutron energy distribution
int n_sample = 0;
while (true) {
rx->products_[0].sample(E_in, site->E, mu, prn_seed);
rx->products_[0].sample(E_in, site->E, mu, seed);
// resample if energy is greater than maximum neutron energy
constexpr int neutron = static_cast<int>(Particle::Type::neutron);

8
src/plot.cpp
View file

@ -80,7 +80,7 @@ namespace model {
std::vector<Plot> plots;
std::unordered_map<int, int> plot_map;
uint64_t plotter_prn_seed = 1;
uint64_t plotter_seed = 1;
} // namespace model
@ -960,9 +960,9 @@ voxel_finalize(hid_t dspace, hid_t dset, hid_t memspace)
}
RGBColor random_color(void) {
return {int(prn(&model::plotter_prn_seed)*255),
int(prn(&model::plotter_prn_seed)*255),
int(prn(&model::plotter_prn_seed)*255)};
return {int(prn(&model::plotter_seed)*255),
int(prn(&model::plotter_seed)*255),
int(prn(&model::plotter_seed)*255)};
}
extern "C" int openmc_id_map(const void* plot, int32_t* data_out)

18
src/random_lcg.cpp
View file

@ -22,24 +22,24 @@ constexpr double prn_norm {1.0 / prn_mod}; // 2^-63
// PRN
//==============================================================================
double prn(uint64_t* prn_seed)
double prn(uint64_t* seed)
{
// This algorithm uses bit-masking to find the next integer(8) value to be
// used to calculate the random number.
*prn_seed = (prn_mult * (*prn_seed) + prn_add) & prn_mask;
*seed = (prn_mult * (*seed) + prn_add) & prn_mask;
// Once the integer is calculated, we just need to divide by 2**m,
// represented here as multiplying by a pre-calculated factor
return (*prn_seed) * prn_norm;
return (*seed) * prn_norm;
}
//==============================================================================
// FUTURE_PRN
//==============================================================================
double future_prn(int64_t n, uint64_t prn_seed)
double future_prn(int64_t n, uint64_t seed)
{
return future_seed(static_cast<uint64_t>(n), prn_seed) * prn_norm;
return future_seed(static_cast<uint64_t>(n), seed) * prn_norm;
}
//==============================================================================
@ -66,16 +66,16 @@ void init_particle_seeds(int64_t id, uint64_t* prn_seeds)
// ADVANCE_PRN_SEED
//==============================================================================
void advance_prn_seed(int64_t n, uint64_t* prn_seed)
void advance_prn_seed(int64_t n, uint64_t* seed)
{
*prn_seed = future_seed(static_cast<uint64_t>(n), *prn_seed);
*seed = future_seed(static_cast<uint64_t>(n), *seed);
}
//==============================================================================
// FUTURE_SEED
//==============================================================================
uint64_t future_seed(uint64_t n, uint64_t prn_seed)
uint64_t future_seed(uint64_t n, uint64_t seed)
{
// Make sure nskip is less than 2^M.
n &= prn_mask;
@ -106,7 +106,7 @@ uint64_t future_seed(uint64_t n, uint64_t prn_seed)
}
// With G and C, we can now find the new seed.
return (g_new * prn_seed + c_new) & prn_mask;
return (g_new * seed + c_new) & prn_mask;
}
//==============================================================================

8
src/reaction_product.cpp
View file

@ -77,25 +77,25 @@ ReactionProduct::ReactionProduct(hid_t group)
}
void ReactionProduct::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
auto n = applicability_.size();
if (n > 1) {
double prob = 0.0;
double c = prn(prn_seed);
double c = prn(seed);
for (int i = 0; i < n; ++i) {
// Determine probability that i-th energy distribution is sampled
prob += applicability_[i](E_in);
// If i-th distribution is sampled, sample energy from the distribution
if (c <= prob) {
distribution_[i]->sample(E_in, E_out, mu, prn_seed);
distribution_[i]->sample(E_in, E_out, mu, seed);
break;
}
}
} else {
// If only one distribution is present, go ahead and sample it
distribution_[0]->sample(E_in, E_out, mu, prn_seed);
distribution_[0]->sample(E_in, E_out, mu, seed);
}
}

26
src/scattdata.cpp
View file

@ -167,10 +167,10 @@ ScattData::base_combine(size_t max_order,
//==============================================================================
void
ScattData::sample_energy(int gin, int& gout, int& i_gout, uint64_t* prn_seed)
ScattData::sample_energy(int gin, int& gout, int& i_gout, uint64_t* seed)
{
// Sample the outgoing group
double xi = prn(prn_seed);
double xi = prn(seed);
double prob = 0.;
i_gout = 0;
for (gout = gmin[gin]; gout < gmax[gin]; ++gout) {
@ -348,21 +348,21 @@ ScattDataLegendre::calc_f(int gin, int gout, double mu)
void
ScattDataLegendre::sample(int gin, int& gout, double& mu, double& wgt,
uint64_t* prn_seed)
uint64_t* seed)
{
// Sample the outgoing energy using the base-class method
int i_gout;
sample_energy(gin, gout, i_gout, prn_seed);
sample_energy(gin, gout, i_gout, seed);
// Now we can sample mu using the scattering kernel using rejection
// sampling from a rectangular bounding box
double M = max_val[gin][i_gout];
int samples;
for (samples = 0; samples < MAX_SAMPLE; ++samples) {
mu = 2. * prn(prn_seed) - 1.;
mu = 2. * prn(seed) - 1.;
double f = calc_f(gin, gout, mu);
if (f > 0.) {
double u = prn(prn_seed) * M;
double u = prn(seed) * M;
if (u <= f) break;
}
}
@ -537,14 +537,14 @@ ScattDataHistogram::calc_f(int gin, int gout, double mu)
void
ScattDataHistogram::sample(int gin, int& gout, double& mu, double& wgt,
uint64_t* prn_seed)
uint64_t* seed)
{
// Sample the outgoing energy using the base-class method
int i_gout;
sample_energy(gin, gout, i_gout, prn_seed);
sample_energy(gin, gout, i_gout, seed);
// Determine the outgoing cosine bin
double xi = prn(prn_seed);
double xi = prn(seed);
int imu;
if (xi < dist[gin][i_gout][0]) {
@ -556,7 +556,7 @@ ScattDataHistogram::sample(int gin, int& gout, double& mu, double& wgt,
}
// Randomly select mu within the imu bin
mu = prn(prn_seed) * dmu + this->mu[imu];
mu = prn(seed) * dmu + this->mu[imu];
if (mu < -1.) {
mu = -1.;
@ -741,15 +741,15 @@ ScattDataTabular::calc_f(int gin, int gout, double mu)
void
ScattDataTabular::sample(int gin, int& gout, double& mu, double& wgt,
uint64_t* prn_seed)
uint64_t* seed)
{
// Sample the outgoing energy using the base-class method
int i_gout;
sample_energy(gin, gout, i_gout, prn_seed);
sample_energy(gin, gout, i_gout, seed);
// Determine the outgoing cosine bin
int NP = this->mu.shape()[0];
double xi = prn(prn_seed);
double xi = prn(seed);
double c_k = dist[gin][i_gout][0];
int k;

12
src/secondary_correlated.cpp
View file

@ -153,14 +153,14 @@ CorrelatedAngleEnergy::CorrelatedAngleEnergy(hid_t group)
}
void CorrelatedAngleEnergy::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< REMOVE THIS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// Before the secondary distribution refactor, an isotropic polar cosine was
// always sampled but then overwritten with the polar cosine sampled from the
// correlated distribution. To preserve the random number stream, we keep
// this dummy sampling here but can remove it later (will change answers)
mu = 2.0*prn(prn_seed) - 1.0;
mu = 2.0*prn(seed) - 1.0;
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< REMOVE THIS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// Find energy bin and calculate interpolation factor -- if the energy is
@ -180,7 +180,7 @@ void CorrelatedAngleEnergy::sample(double E_in, double& E_out, double& mu,
}
// Sample between the ith and [i+1]th bin
int l = r > prn(prn_seed) ? i + 1 : i;
int l = r > prn(seed) ? i + 1 : i;
// Interpolation for energy E1 and EK
int n_energy_out = distribution_[i].e_out.size();
@ -199,7 +199,7 @@ void CorrelatedAngleEnergy::sample(double E_in, double& E_out, double& mu,
// Determine outgoing energy bin
n_energy_out = distribution_[l].e_out.size();
n_discrete = distribution_[l].n_discrete;
double r1 = prn(prn_seed);
double r1 = prn(seed);
double c_k = distribution_[l].c[0];
int k = 0;
int end = n_energy_out - 2;
@ -260,9 +260,9 @@ void CorrelatedAngleEnergy::sample(double E_in, double& E_out, double& mu,
// Find correlated angular distribution for closest outgoing energy bin
if (r1 - c_k < c_k1 - r1) {
mu = distribution_[l].angle[k]->sample(prn_seed);
mu = distribution_[l].angle[k]->sample(seed);
} else {
mu = distribution_[l].angle[k + 1]->sample(prn_seed);
mu = distribution_[l].angle[k + 1]->sample(seed);
}
}

14
src/secondary_kalbach.cpp
View file

@ -113,14 +113,14 @@ KalbachMann::KalbachMann(hid_t group)
} // incoming energies
}
void KalbachMann::sample(double E_in, double& E_out, double& mu, uint64_t* prn_seed) const
void KalbachMann::sample(double E_in, double& E_out, double& mu, uint64_t* seed) const
{
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< REMOVE THIS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// Before the secondary distribution refactor, an isotropic polar cosine was
// always sampled but then overwritten with the polar cosine sampled from the
// correlated distribution. To preserve the random number stream, we keep
// this dummy sampling here but can remove it later (will change answers)
mu = 2.0*prn(prn_seed) - 1.0;
mu = 2.0*prn(seed) - 1.0;
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< REMOVE THIS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// Find energy bin and calculate interpolation factor -- if the energy is
@ -140,7 +140,7 @@ void KalbachMann::sample(double E_in, double& E_out, double& mu, uint64_t* prn_s
}
// Sample between the ith and [i+1]th bin
int l = r > prn(prn_seed) ? i + 1 : i;
int l = r > prn(seed) ? i + 1 : i;
// Interpolation for energy E1 and EK
int n_energy_out = distribution_[i].e_out.size();
@ -159,7 +159,7 @@ void KalbachMann::sample(double E_in, double& E_out, double& mu, uint64_t* prn_s
// Determine outgoing energy bin
n_energy_out = distribution_[l].e_out.size();
n_discrete = distribution_[l].n_discrete;
double r1 = prn(prn_seed);
double r1 = prn(seed);
double c_k = distribution_[l].c[0];
int k = 0;
int end = n_energy_out - 2;
@ -229,11 +229,11 @@ void KalbachMann::sample(double E_in, double& E_out, double& mu, uint64_t* prn_s
}
// Sampled correlated angle from Kalbach-Mann parameters
if (prn(prn_seed) > km_r) {
double T = (2.0*prn(prn_seed) - 1.0) * std::sinh(km_a);
if (prn(seed) > km_r) {
double T = (2.0*prn(seed) - 1.0) * std::sinh(km_a);
mu = std::log(T + std::sqrt(T*T + 1.0))/km_a;
} else {
double r1 = prn(prn_seed);
double r1 = prn(seed);
mu = std::log(r1*std::exp(km_a) + (1.0 - r1)*std::exp(-km_a))/km_a;
}
}

26
src/secondary_nbody.cpp
View file

@ -22,38 +22,38 @@ NBodyPhaseSpace::NBodyPhaseSpace(hid_t group)
}
void NBodyPhaseSpace::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// By definition, the distribution of the angle is isotropic for an N-body
// phase space distribution
mu = 2.0*prn(prn_seed) - 1.0;
mu = 2.0*prn(seed) - 1.0;
// Determine E_max parameter
double Ap = mass_ratio_;
double E_max = (Ap - 1.0)/Ap * (A_/(A_ + 1.0)*E_in + Q_);
// x is essentially a Maxwellian distribution
double x = maxwell_spectrum(1.0, prn_seed);
double x = maxwell_spectrum(1.0, seed);
double y;
double r1, r2, r3, r4, r5, r6;
switch (n_bodies_) {
case 3:
y = maxwell_spectrum(1.0, prn_seed);
y = maxwell_spectrum(1.0, seed);
break;
case 4:
r1 = prn(prn_seed);
r2 = prn(prn_seed);
r3 = prn(prn_seed);
r1 = prn(seed);
r2 = prn(seed);
r3 = prn(seed);
y = -std::log(r1*r2*r3);
break;
case 5:
r1 = prn(prn_seed);
r2 = prn(prn_seed);
r3 = prn(prn_seed);
r4 = prn(prn_seed);
r5 = prn(prn_seed);
r6 = prn(prn_seed);
r1 = prn(seed);
r2 = prn(seed);
r3 = prn(seed);
r4 = prn(seed);
r5 = prn(seed);
r6 = prn(seed);
y = -std::log(r1*r2*r3*r4) - std::log(r5) * std::pow(std::cos(PI/2.0*r6), 2);
break;
default:

30
src/secondary_thermal.cpp
View file

@ -33,7 +33,7 @@ CoherentElasticAE::CoherentElasticAE(const CoherentElasticXS& xs)
void
CoherentElasticAE::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// Get index and interpolation factor for elastic grid
int i;
@ -43,7 +43,7 @@ CoherentElasticAE::sample(double E_in, double& E_out, double& mu,
// Sample a Bragg edge between 1 and i
const auto& factors = xs_.factors();
double prob = prn(prn_seed) * factors[i+1];
double prob = prn(seed) * factors[i+1];
int k = 0;
if (prob >= factors.front()) {
k = lower_bound_index(factors.begin(), factors.begin() + (i+1), prob);
@ -67,11 +67,11 @@ IncoherentElasticAE::IncoherentElasticAE(hid_t group)
void
IncoherentElasticAE::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// Sample angle by inverting the distribution in ENDF-102, Eq. 7.4
double c = 2 * E_in * debye_waller_;
mu = std::log(1.0 + prn(prn_seed)*(std::exp(2.0*c) - 1))/c - 1.0;
mu = std::log(1.0 + prn(seed)*(std::exp(2.0*c) - 1))/c - 1.0;
// Energy doesn't change in elastic scattering (ENDF-102, Eq. 7.4)
E_out = E_in;
@ -90,7 +90,7 @@ IncoherentElasticAEDiscrete::IncoherentElasticAEDiscrete(hid_t group,
void
IncoherentElasticAEDiscrete::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// Get index and interpolation factor for elastic grid
int i;
@ -102,7 +102,7 @@ IncoherentElasticAEDiscrete::sample(double E_in, double& E_out, double& mu,
// Sample outgoing cosine bin
int n_mu = mu_out_.shape()[1];
int k = prn(prn_seed) * n_mu;
int k = prn(seed) * n_mu;
// Rather than use the sampled discrete mu directly, it is smeared over
// a bin of width 0.5*min(mu[k] - mu[k-1], mu[k+1] - mu[k]) centered on the
@ -125,7 +125,7 @@ IncoherentElasticAEDiscrete::sample(double E_in, double& E_out, double& mu,
mu_out_(i, k+1) + f*(mu_out_(i+1, k+1) - mu_out_(i, k+1));
// Smear cosine
mu += std::min(mu - mu_left, mu_right - mu)*(prn(prn_seed) - 0.5);
mu += std::min(mu - mu_left, mu_right - mu)*(prn(seed) - 0.5);
// Energy doesn't change in elastic scattering
E_out = E_in;
@ -146,7 +146,7 @@ IncoherentInelasticAEDiscrete::IncoherentInelasticAEDiscrete(hid_t group,
void
IncoherentInelasticAEDiscrete::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// Get index and interpolation factor for inelastic grid
int i;
@ -164,10 +164,10 @@ IncoherentInelasticAEDiscrete::sample(double E_in, double& E_out, double& mu,
int n = energy_out_.shape()[1];
if (!skewed_) {
// All bins equally likely
j = prn(prn_seed) * n;
j = prn(seed) * n;
} else {
// Distribution skewed away from edge points
double r = prn(prn_seed) * (n - 3);
double r = prn(seed) * (n - 3);
if (r > 1.0) {
// equally likely N-4 middle bins
j = r + 1;
@ -195,7 +195,7 @@ IncoherentInelasticAEDiscrete::sample(double E_in, double& E_out, double& mu,
// Sample outgoing cosine bin
int m = mu_out_.shape()[2];
int k = prn(prn_seed) * m;
int k = prn(seed) * m;
// Determine outgoing cosine corresponding to E_in[i] and E_in[i+1]
double mu_ijk = mu_out_(i, j, k);
@ -250,7 +250,7 @@ IncoherentInelasticAE::IncoherentInelasticAE(hid_t group)
void
IncoherentInelasticAE::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// Get index and interpolation factor for inelastic grid
int i;
@ -263,7 +263,7 @@ IncoherentInelasticAE::sample(double E_in, double& E_out, double& mu,
// Determine outgoing energy bin
// (First reset n_energy_out to the right value)
auto n = distribution_[l].n_e_out;
double r1 = prn(prn_seed);
double r1 = prn(seed);
double c_j = distribution_[l].e_out_cdf[0];
double c_j1;
std::size_t j;
@ -303,7 +303,7 @@ IncoherentInelasticAE::sample(double E_in, double& E_out, double& mu,
// Sample outgoing cosine bin
int n_mu = distribution_[l].mu.shape()[1];
std::size_t k = prn(prn_seed) * n_mu;
std::size_t k = prn(seed) * n_mu;
// Rather than use the sampled discrete mu directly, it is smeared over
// a bin of width 0.5*min(mu[k] - mu[k-1], mu[k+1] - mu[k]) centered on the
@ -328,7 +328,7 @@ IncoherentInelasticAE::sample(double E_in, double& E_out, double& mu,
mu_right = mu_l(j, k+1) + f*(mu_l(j+1, k+1) - mu_l(j, k+1));
// Smear cosine
mu += std::min(mu - mu_left, mu_right - mu)*(prn(prn_seed) - 0.5);
mu += std::min(mu - mu_left, mu_right - mu)*(prn(seed) - 0.5);
}
} // namespace openmc

8
src/secondary_uncorrelated.cpp
View file

@ -53,7 +53,7 @@ UncorrelatedAngleEnergy::UncorrelatedAngleEnergy(hid_t group)
void
UncorrelatedAngleEnergy::sample(double E_in, double& E_out, double& mu,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// Sample cosine of scattering angle
if (fission_) {
@ -62,14 +62,14 @@ UncorrelatedAngleEnergy::sample(double E_in, double& E_out, double& mu,
mu = 1.0;
// <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< REMOVE THIS <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
} else if (!angle_.empty()) {
mu = angle_.sample(E_in, prn_seed);
mu = angle_.sample(E_in, seed);
} else {
// no angle distribution given => assume isotropic for all energies
mu = 2.0*prn(prn_seed) - 1.0;
mu = 2.0*prn(seed) - 1.0;
}
// Sample outgoing energy
E_out = energy_->sample(E_in, prn_seed);
E_out = energy_->sample(E_in, seed);
}
} // namespace openmc

2
src/simulation.cpp
View file

@ -476,7 +476,7 @@ void initialize_history(Particle* p, int64_t index_source)
// set random number seed
int64_t particle_seed = (simulation::total_gen + overall_generation() - 1)
* settings::n_particles + p->id_;
init_particle_seeds(particle_seed, p->prn_seeds_);
init_particle_seeds(particle_seed, p->seeds_);
// set particle trace
simulation::trace = false;

14
src/source.cpp
View file

@ -142,7 +142,7 @@ SourceDistribution::SourceDistribution(pugi::xml_node node)
}
Particle::Bank SourceDistribution::sample(uint64_t* prn_seed) const
Particle::Bank SourceDistribution::sample(uint64_t* seed) const
{
Particle::Bank site;
@ -158,7 +158,7 @@ Particle::Bank SourceDistribution::sample(uint64_t* prn_seed) const
site.particle = particle_;
// Sample spatial distribution
site.r = space_->sample(prn_seed);
site.r = space_->sample(seed);
double xyz[] {site.r.x, site.r.y, site.r.z};
// Now search to see if location exists in geometry
@ -200,7 +200,7 @@ Particle::Bank SourceDistribution::sample(uint64_t* prn_seed) const
++n_accept;
// Sample angle
site.u = angle_->sample(prn_seed);
site.u = angle_->sample(seed);
// Check for monoenergetic source above maximum particle energy
auto p = static_cast<int>(particle_);
@ -218,7 +218,7 @@ Particle::Bank SourceDistribution::sample(uint64_t* prn_seed) const
while (true) {
// Sample energy spectrum
site.E = energy_->sample(prn_seed);
site.E = energy_->sample(seed);
// Resample if energy falls outside minimum or maximum particle energy
if (site.E < data::energy_max[p] && site.E > data::energy_min[p]) break;
@ -287,7 +287,7 @@ void initialize_source()
}
}
Particle::Bank sample_external_source(uint64_t* prn_seed)
Particle::Bank sample_external_source(uint64_t* seed)
{
// Determine total source strength
double total_strength = 0.0;
@ -297,7 +297,7 @@ Particle::Bank sample_external_source(uint64_t* prn_seed)
// Sample from among multiple source distributions
int i = 0;
if (model::external_sources.size() > 1) {
double xi = prn(prn_seed)*total_strength;
double xi = prn(seed)*total_strength;
double c = 0.0;
for (; i < model::external_sources.size(); ++i) {
c += model::external_sources[i].strength();
@ -306,7 +306,7 @@ Particle::Bank sample_external_source(uint64_t* prn_seed)
}
// Sample source site from i-th source distribution
Particle::Bank site {model::external_sources[i].sample(prn_seed)};
Particle::Bank site {model::external_sources[i].sample(seed)};
// If running in MG, convert site.E to group
if (!settings::run_CE) {

6
src/surface.cpp
View file

@ -197,7 +197,7 @@ Surface::reflect(Position r, Direction u) const
}
Direction
Surface::diffuse_reflect(Position r, Direction u, uint64_t* prn_seed) const
Surface::diffuse_reflect(Position r, Direction u, uint64_t* seed) const
{
// Diffuse reflect direction according to the normal.
// cosine distribution
@ -208,10 +208,10 @@ Surface::diffuse_reflect(Position r, Direction u, uint64_t* prn_seed) const
// sample from inverse function, u=sqrt(rand) since p(u)=2u, so F(u)=u^2
const double mu = (projection>=0.0) ?
-std::sqrt(prn(prn_seed)) : std::sqrt(prn(prn_seed));
-std::sqrt(prn(seed)) : std::sqrt(prn(seed));
// sample azimuthal distribution uniformly
u = rotate_angle(n, mu, nullptr, prn_seed);
u = rotate_angle(n, mu, nullptr, seed);
// normalize the direction
return u/u.norm();

12
src/thermal.cpp
View file

@ -151,7 +151,7 @@ ThermalScattering::ThermalScattering(hid_t group, const std::vector<double>& tem
void
ThermalScattering::calculate_xs(double E, double sqrtkT, int* i_temp,
double* elastic, double* inelastic,
uint64_t* prn_seed) const
uint64_t* seed) const
{
// Determine temperature for S(a,b) table
double kT = sqrtkT*sqrtkT;
@ -173,7 +173,7 @@ ThermalScattering::calculate_xs(double E, double sqrtkT, int* i_temp,
// Randomly sample between temperature i and i+1
double f = (kT - kTs_[i]) / (kTs_[i+1] - kTs_[i]);
if (f > prn(prn_seed)) ++i;
if (f > prn(seed)) ++i;
}
// Set temperature index
@ -266,13 +266,13 @@ ThermalData::calculate_xs(double E, double* elastic, double* inelastic) const
void
ThermalData::sample(const NuclideMicroXS& micro_xs, double E,
double* E_out, double* mu, uint64_t* prn_seed)
double* E_out, double* mu, uint64_t* seed)
{
// Determine whether inelastic or elastic scattering will occur
if (prn(prn_seed) < micro_xs.thermal_elastic / micro_xs.thermal) {
elastic_.distribution->sample(E, *E_out, *mu, prn_seed);
if (prn(seed) < micro_xs.thermal_elastic / micro_xs.thermal) {
elastic_.distribution->sample(E, *E_out, *mu, seed);
} else {
inelastic_.distribution->sample(E, *E_out, *mu, prn_seed);
inelastic_.distribution->sample(E, *E_out, *mu, seed);
}
// Because of floating-point roundoff, it may be possible for mu to be