ThePEG::Constants Namespace Reference

The Constants namespace containing some useful physical constants with suitable units. More...

Variables
constexpr Length	MaxLength = 1.0e23_mm
	A really large length.
constexpr Energy	MaxEnergy = 1.0e6_GeV
	A really large energy.
constexpr Energy2	MaxEnergy2 = MaxEnergy * MaxEnergy
	A really large squared energy.
constexpr double	MaxDouble = DBL_MAX
	The largest possible double.
constexpr double	HugeDouble = DBL_MAX * 1.0e-4
	A really large double.
constexpr double	MaxFloat = FLT_MAX
	The largest possible float.
constexpr double	HugeFloat = FLT_MAX * 0.01
	A really large floa.t.
constexpr double	MaxRapidity = 100.0
	A really large rapidity.
constexpr double	pi = M_PI
	Good old \(\pi\).
constexpr double	twopi = 2.0 * pi
	Good old \(2\pi\).
constexpr long	MaxInt = 1000000000L
	A really large integer.
constexpr double	epsilon = DBL_EPSILON
	The smallest non-zero double.
constexpr double	EulerGamma = 0.5772156649015329
	The Euler gamma.
constexpr double	zeta2 = pi*pi/6.
	\(\zeta(2)\).
constexpr double	zeta3 = 1.2020569031595943
	\(\zeta(3)\).
constexpr double	zeta4 = 0.4*zeta2*zeta2
	\(\zeta(4)\).
constexpr double	zeta5 = 1.0369277551433699
	\(\zeta(5)\).
constexpr double	zeta6 = 4.*zeta2*zeta4/7.
	\(\zeta(6)\).

Detailed Description

The Constants namespace containing some useful physical constants with suitable units.

Variable Documentation

epsilon

constexpr double ThePEG::Constants::epsilon = DBL_EPSILON

constexpr

The smallest non-zero double.

Definition at line 63 of file Constants.h.

Referenced by ThePEG::LorentzVector< Value >::eta(), ThePEG::LorentzVector< Value >::rapidity(), and ThePEG::Cuts::sHat().

EulerGamma

constexpr double ThePEG::Constants::EulerGamma = 0.5772156649015329

constexpr

The Euler gamma.

Definition at line 66 of file Constants.h.

HugeDouble

constexpr double ThePEG::Constants::HugeDouble = DBL_MAX * 1.0e-4

constexpr

A really large double.

Definition at line 42 of file Constants.h.

HugeFloat

constexpr double ThePEG::Constants::HugeFloat = FLT_MAX * 0.01

constexpr

A really large floa.t.

Definition at line 48 of file Constants.h.

MaxDouble

constexpr double ThePEG::Constants::MaxDouble = DBL_MAX

constexpr

The largest possible double.

Definition at line 39 of file Constants.h.

MaxEnergy

constexpr Energy ThePEG::Constants::MaxEnergy = 1.0e6_GeV

constexpr

A really large energy.

Definition at line 33 of file Constants.h.

Referenced by ThePEG::MECuts::mHatMax(), ThePEG::MECuts::pTHatMax(), ThePEG::ParticleData::width(), ThePEG::ParticleData::widthLoCut(), and ThePEG::ParticleData::widthUpCut().

MaxEnergy2

constexpr Energy2 ThePEG::Constants::MaxEnergy2 = MaxEnergy * MaxEnergy

constexpr

A really large squared energy.

Definition at line 36 of file Constants.h.

Referenced by ThePEG::MECuts::scaleMax(), ThePEG::MECuts::tHatMax(), and ThePEG::MECuts::uHatMax().

MaxFloat

constexpr double ThePEG::Constants::MaxFloat = FLT_MAX

constexpr

The largest possible float.

Definition at line 45 of file Constants.h.

Referenced by ThePEG::Particle::eta(), and ThePEG::Particle::rapidity().

MaxInt

constexpr long ThePEG::Constants::MaxInt = 1000000000L

constexpr

A really large integer.

Definition at line 60 of file Constants.h.

MaxLength

constexpr Length ThePEG::Constants::MaxLength = 1.0e23_mm

constexpr

A really large length.

Definition at line 30 of file Constants.h.

Referenced by ThePEG::ParticleData::cTau().

MaxRapidity

constexpr double ThePEG::Constants::MaxRapidity = 100.0

constexpr

A really large rapidity.

Definition at line 51 of file Constants.h.

Referenced by ThePEG::FuzzyTheta::bounds().

pi

constexpr double ThePEG::Constants::pi = M_PI

constexpr

Good old \(\pi\).

Definition at line 54 of file Constants.h.

Referenced by ThePEG::FuzzyTheta::bounds(), ThePEG::ThreeVector< Value >::deltaPhi(), ThePEG::dirTheta(), ThePEG::Helicity::VertexBase::electroMagneticCoupling(), ThePEG::RandomGenerator::rndBW(), ThePEG::RandomGenerator::rndGaussTwoNumbers(), ThePEG::RandomGenerator::rndRelBW(), ThePEG::Helicity::VertexBase::strongCoupling(), and ThePEG::Helicity::VertexBase::weakCoupling().

twopi

constexpr double ThePEG::Constants::twopi = 2.0 * pi

constexpr

Good old \(2\pi\).

Definition at line 57 of file Constants.h.

Referenced by ThePEG::ThreeVector< Value >::deltaPhi().

zeta2

constexpr double ThePEG::Constants::zeta2 = pi*pi/6.

constexpr

\(\zeta(2)\).

Definition at line 69 of file Constants.h.

zeta3

constexpr double ThePEG::Constants::zeta3 = 1.2020569031595943

constexpr

\(\zeta(3)\).

Definition at line 72 of file Constants.h.

zeta4

constexpr double ThePEG::Constants::zeta4 = 0.4*zeta2*zeta2

constexpr

\(\zeta(4)\).

Definition at line 75 of file Constants.h.

zeta5

constexpr double ThePEG::Constants::zeta5 = 1.0369277551433699

constexpr

\(\zeta(5)\).

Definition at line 78 of file Constants.h.

zeta6

constexpr double ThePEG::Constants::zeta6 = 4.*zeta2*zeta4/7.

constexpr

\(\zeta(6)\).

Definition at line 81 of file Constants.h.