10 #ifndef IMPACTX_DISTRIBUTION_GAUSSIAN 11 #define IMPACTX_DISTRIBUTION_GAUSSIAN 21 namespace distribution
34 Gaussian(amrex::ParticleReal
const sigx, amrex::ParticleReal
const sigy,
35 amrex::ParticleReal
const sigt,amrex::ParticleReal
const sigpx,
36 amrex::ParticleReal
const sigpy,amrex::ParticleReal
const sigpt,
37 amrex::ParticleReal
const muxpx=0.0, amrex::ParticleReal
const muypy=0.0,
38 amrex::ParticleReal
const mutpt=0.0
57 amrex::ParticleReal & x,
58 amrex::ParticleReal & y,
59 amrex::ParticleReal & t,
60 amrex::ParticleReal & px,
61 amrex::ParticleReal & py,
62 amrex::ParticleReal & pt,
65 using namespace amrex::literals;
67 amrex::ParticleReal ln1,u1,u2;
68 amrex::ParticleReal root,a1,a2;
70 constexpr amrex::ParticleReal
pi = 3.14159265358979_prt;
77 x = ln1*cos(2_prt*pi*u2);
78 px = ln1*sin(2_prt*pi*u2);
83 y = ln1*cos(2_prt*pi*u2);
84 py = ln1*sin(2_prt*pi*u2);
89 t = ln1*cos(2_prt*pi*u2);
90 pt = ln1*sin(2_prt*pi*u2);
118 #endif // IMPACTX_DISTRIBUTION_GAUSSIAN
constexpr std::enable_if_t< std::is_floating_point< T >::value, T > pi()
amrex::ParticleReal m_sigmaY
Definition: Gaussian.H:110
amrex::ParticleReal m_sigmaT
Definition: Gaussian.H:110
Definition: ImpactX.cpp:31
Gaussian(amrex::ParticleReal const sigx, amrex::ParticleReal const sigy, amrex::ParticleReal const sigt, amrex::ParticleReal const sigpx, amrex::ParticleReal const sigpy, amrex::ParticleReal const sigpt, amrex::ParticleReal const muxpx=0.0, amrex::ParticleReal const muypy=0.0, amrex::ParticleReal const mutpt=0.0)
Definition: Gaussian.H:34
amrex::ParticleReal m_muypy
Definition: Gaussian.H:112
amrex::ParticleReal m_mutpt
Definition: Gaussian.H:112
#define AMREX_FORCE_INLINE
#define AMREX_GPU_HOST_DEVICE
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE void operator()(amrex::ParticleReal &x, amrex::ParticleReal &y, amrex::ParticleReal &t, amrex::ParticleReal &px, amrex::ParticleReal &py, amrex::ParticleReal &pt, amrex::RandomEngine const &engine) const
Definition: Gaussian.H:56
amrex::ParticleReal m_sigmaX
Definition: Gaussian.H:110
amrex::ParticleReal m_sigmaPt
Definition: Gaussian.H:111
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE GpuComplex< T > log(const GpuComplex< T > &a_z) noexcept
amrex::ParticleReal m_sigmaPx
related RMS sizes (length)
Definition: Gaussian.H:111
amrex::ParticleReal m_muxpx
RMS momentum.
Definition: Gaussian.H:112
amrex::ParticleReal m_sigmaPy
Definition: Gaussian.H:111
Definition: Gaussian.H:23
AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE GpuComplex< T > sqrt(const GpuComplex< T > &a_z) noexcept