AMReX_Random.H File Reference

#include <AMReX_Config.H>
#include <AMReX.H>
#include <AMReX_GpuQualifiers.H>
#include <AMReX_ParallelDescriptor.H>
#include <AMReX_RandomEngine.H>
#include <limits>
#include <cmath>
#include <cstdint>

Go to the source code of this file.

Namespaces
	amrex
	amrex::detail

Functions
Real	amrex::Random ()
	Generate a psuedo-random double from uniform distribution. More...
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE Real	amrex::Random (RandomEngine const &random_engine)
Real	amrex::RandomNormal (Real mean, Real stddev)
	Generate a psuedo-random double from a normal distribution. More...
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE Real	amrex::RandomNormal (Real mean, Real stddev, RandomEngine const &random_engine)
unsigned int	amrex::RandomPoisson (Real lambda)
	Generate a psuedo-random integer from a Poisson distribution. More...
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE unsigned int	amrex::RandomPoisson (Real lambda, RandomEngine const &random_engine)
Real	amrex::RandomGamma (Real alpha, Real beta)
	Generate a psuedo-random floating point number from the Gamma distribution. More...
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE Real	amrex::RandomGamma (Real alpha, Real beta, RandomEngine const &random_engine)
unsigned int	amrex::Random_int (unsigned int n)
	Generates one pseudorandom unsigned integer which is uniformly distributed on [0,n-1]-interval for each call. More...
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE unsigned int	amrex::Random_int (unsigned int n, RandomEngine const &random_engine)
ULong	amrex::Random_long (ULong n)
	Generates one pseudorandom unsigned long which is uniformly distributed on [0,n-1]-interval for each call. More...
void	amrex::FillRandom (Real *p, Long N)
void	amrex::FillRandomNormal (Real *p, Long N, Real mean, Real stddev)
	Fill random numbers from normal distribution. More...
ULong	amrex::detail::DefaultGpuSeed ()
void	amrex::InitRandom (ULong cpu_seed, int nprocs=ParallelDescriptor::NProcs(), ULong gpu_seed=detail::DefaultGpuSeed())
	Set the seed of the random number generator. More...
void	amrex::ResetRandomSeed (ULong cpu_seed, ULong gpu_seed)
void	amrex::SaveRandomState (std::ostream &os)
	Save and restore random state. More...
void	amrex::RestoreRandomState (std::istream &is, int nthreads_old, int nstep_old)
void	amrex::UniqueRandomSubset (Vector< int > &uSet, int setSize, int poolSize, bool printSet=false)
	Create a unique subset of random numbers from a pool of integers in the range [0, poolSize - 1] the set will be in the order they are found setSize must be <= poolSize uSet will be resized to setSize if you want all processors to have the same set, call this on one processor and broadcast the array. More...
void	amrex::DeallocateRandomSeedDevArray ()