Hydra 2.2.1 Release highlights New functors and implementations (hydra/functions): ArgusShape BifurcatedGaussian BlattWeisskopfFunctions BreitWignerLineShape BreitWignerNR Chebychev ChiSquare CosHelicityAngle CrystalBallShape DeltaDMassBackground Exponential Gaussian GaussianKDE GeneralizedGamma Ipatia JohnsonSUShape LogNormal M12PhaseSpaceLineShape M12SqPhaseSpaceLineShape PlanesDeltaAngle Polynomial ThreeBodyMassThresholdBackground TrapezoidalShape TriangularShape UniformShape WignerDMatrix ZemachFunctions Orthogonal polynomials (hydra/functions/Math.h) Chebychev of 1st and 2nd kinds Laguerre Hermite Legendre Jacobi New Parameter::Create("name") method overload. Wrappers around thrust algorithms using range semantics: gather scatter sort sort_by_key reduce transform. See header hydra/Algorithms.h Predefined ranges: hydra::random_gauss_range(...), hydra::random_exp_range(...), hydra::random_flat_range(...), hydra::range(...) hydra::constant_range(...) hydra::phase_space_range(...) Collecting range: hydra::collect to reorder a range of values according to a indexing scheme. Introduction of hydra::make_loglikelihood_fcn overloads supporting range semantics. Introduction of hydra::make_loglikelihood_fcn overloads for binned datasets. Implementation of hydra::begin, hydra::end, hydra::begin, hydra::rend free functions. Range semantics for hydra::PhaseSpace. Many other performance and interface additions and improvements accross the tree. Bug fixes Null pointer breaking build in CLING Fix syntax error in multiarray::insert(...) Fix syntax error in multivector::insert(...) Fix syntax error in hydra::reduce Fix syntax error in hydra::make_loglikelihood_fcn overloads supporting weighted datasets.