lar::util::details::FastMatrixOperationsBase< T, DIM > Struct Template Reference

Base class with common definitions for "fast" matrix operations. More...

#include <FastMatrixMathHelper.h>

Inheritance diagram for lar::util::details::FastMatrixOperationsBase< T, DIM >:

Public Types
using	Data_t = T
using	Matrix_t = std::array< Data_t, Dim *Dim >
using	Vector_t = std::array< Data_t, Dim >

Static Public Member Functions
static Vector_t	MatrixVectorProduct (Matrix_t const &mat, Vector_t const &vec)
	Returns the product of a square matrix times a column vector. More...
static constexpr Data_t	sqr (Data_t v)

Static Public Attributes
static constexpr unsigned int	Dim = DIM
	matrix dimensions More...

Detailed Description

template<typename T, unsigned int DIM>
struct lar::util::details::FastMatrixOperationsBase< T, DIM >

Base class with common definitions for "fast" matrix operations.

Definition at line 34 of file FastMatrixMathHelper.h.

Member Typedef Documentation

template<typename T, unsigned int DIM>

using lar::util::details::FastMatrixOperationsBase< T, DIM >::Data_t = T

Definition at line 35 of file FastMatrixMathHelper.h.

template<typename T, unsigned int DIM>

using lar::util::details::FastMatrixOperationsBase< T, DIM >::Matrix_t = std::array<Data_t, Dim*Dim>

Definition at line 39 of file FastMatrixMathHelper.h.

template<typename T, unsigned int DIM>

using lar::util::details::FastMatrixOperationsBase< T, DIM >::Vector_t = std::array<Data_t, Dim>

Definition at line 40 of file FastMatrixMathHelper.h.

Member Function Documentation

template<typename T , unsigned int DIM>

auto lar::util::details::FastMatrixOperationsBase< T, DIM >::MatrixVectorProduct ( Matrix_t const &  mat, Vector_t const &  vec  )

static

Returns the product of a square matrix times a column vector.

Definition at line 362 of file FastMatrixMathHelper.h.

{
  // not really fast, but there is probably not much to fasten...
  Vector_t res;
  Data_t const* mat_row = mat.data();
  for (size_t r = 0; r < Dim; ++r) {
    Data_t elem = Data_t(0);
    for (size_t c = 0; c < Dim; ++c)
      elem += *(mat_row++) * vec[c];
    res[r] = elem;
  } // for
  return res;
} // FastMatrixOperationsBase<>::MatrixVectorProduct()

template<typename T, unsigned int DIM>

static constexpr Data_t lar::util::details::FastMatrixOperationsBase< T, DIM >::sqr ( Data_t  v )

inlinestatic

Definition at line 47 of file FastMatrixMathHelper.h.

{ return v*v; }

Member Data Documentation

template<typename T, unsigned int DIM>

constexpr unsigned int lar::util::details::FastMatrixOperationsBase< T, DIM >::Dim = DIM

static

matrix dimensions

Definition at line 37 of file FastMatrixMathHelper.h.

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The documentation for this struct was generated from the following file:

• FastMatrixMathHelper.h