Difference: MathCore (5 vs. 6)

Revision 62005-10-04 - unknown

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META TOPICPARENT name="LHCbPhysicsEventModelTaskForce"

LHCb Physics Event Model Comments on the MathCore Vector and the Root Linear Algebra Classes

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  • Calculation of matrix determinant
  • Basic matrix operations: *, +, +=, -, transpose
  • Specialisations for the case of symmetric matrices and their operations
Changed:
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    • Important: symmetric matrix similarity specialisation: M*S*M^T is faster for symmetric matrices than for standard ones. This is used extensively in the track fit.
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    • Important: symmetric matrix similarity transformation specialisation: M*S*M^-1 is faster for symmetric matrices S and otrhogonal matrix M than for standard ones. This is used extensively in the track fit.
 
  • Easy construction of identity and zero matrices
  • Assignment without temporaries (generaliseable to = operator?)
  • Access to individual elements
 
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