/home/bes3soft/bes3soft/Boss/7.0.2/dist/7.0.2/Reconstruction/MdcPatRec/MdcTrkRecon/MdcTrkRecon-00-03-45/MdcTrkRecon/mdcTwoInv.h File Reference

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Functions
int	mdcTwoInv (double matrix[3], double invmat[3])

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Function Documentation

int mdcTwoInv	(	double	matrix[3],
		double	invmat[3]
	)			[inline]

Definition at line 1 of file mdcTwoInv.h.

Referenced by MdcSegInfoAxialO::calcFromOrigin(), MdcSegGrouper::calcParBySegs(), MdcSegInfoSterO::calcStereo(), and MdcSegInfoCsmc::calcStraight().

                                                          {

  double det = matrix[0] * matrix[2] - matrix[1] * matrix[1];
  if (det == 0.0) {
    invmat[0] = invmat[2] = invmat[1] = 0.00000;
    return 1;
  }
  else {
    double detinv = 1./det;
    invmat[0] = matrix[2] * detinv;
    invmat[2] = matrix[0] * detinv;
    invmat[1] = -matrix[1] * detinv;
    return 0;
  }
}

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