GitHub-Proxy/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2025-05-06 10:44:05 +08:00
Code Issues Packages Projects Releases Wiki Activity

forgot to remove that old code

Browse Source
This commit is contained in:
Benoit Jacob 2008-08-07 21:50:29 +00:00
parent 5f350448e1
commit 9bbe396939
1 changed files with 0 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
Eigen/src/LU/Determinant.h
View File

@ -41,32 +41,6 @@ const typename Derived::Scalar ei_bruteforce_det4_helper
* (matrix.coeff(m,2) * matrix.coeff(n,3) - matrix.coeff(n,2) * matrix.coeff(m,3));
}
template<typename Derived>
const typename Derived::Scalar ei_bruteforce_det(const MatrixBase<Derived>& m)
{
switch(Derived::RowsAtCompileTime)
{
case 1:
return m.coeff(0,0);
case 2:
return m.coeff(0,0) * m.coeff(1,1) - m.coeff(1,0) * m.coeff(0,1);
case 3:
return ei_bruteforce_det3_helper(m,0,1,2)
- ei_bruteforce_det3_helper(m,1,0,2)
+ ei_bruteforce_det3_helper(m,2,0,1);
case 4:
// trick by Martin Costabel to compute 4x4 det with only 30 muls
return ei_bruteforce_det4_helper(m,0,1,2,3)
- ei_bruteforce_det4_helper(m,0,2,1,3)
+ ei_bruteforce_det4_helper(m,0,3,1,2)
+ ei_bruteforce_det4_helper(m,1,2,0,3)
- ei_bruteforce_det4_helper(m,1,3,0,2)
+ ei_bruteforce_det4_helper(m,2,3,0,1);
default:
ei_internal_assert(false);
}
}
const int TriangularDeterminant = 0;
template<typename Derived,