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[Lapack] Matrix inversion in Lapack - which algorithm used?

Xavier,

a quick info: it is Gaussian elimination with partial pivoting that
generates LU factors that are then applied to an identity matrix.

Regards,

Piotr

On 11/3/14 11:42 AM, Xavier Prudent wrote:
Dear Jim,

Thank you for your answer, I am however not sure to understand.

I indeed just want to know which mathematical algorithm was implemented
for the inversion of a matrix in LAPACK.

Regards,

Xavier

2014-11-03 17:40 GMT+01:00 James Demmel <demmel@Domain.Removed
<mailto:demmel@Domain.Removed>>:

    Try sgetri.f .
    Jim Demmel


    On 11/3/14, 7:40 AM, Xavier Prudent wrote:

    Dear LAPACK authors,


    Despite extensive searches, I could not find which algorithm is
    used to invert a matrix in LAPACK>


    As a matter of fact I am comparing various approaches to invert a
    matrix in R, and the standard solve() function is an interface to
    the LAPACK corresponding functions.

    Thanks in advance,

    regards,

    Xavier Prudent

    --
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    Xavier Prudent
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--
/---------------------------------------
Xavier Prudent
/
/
Computational biology and evolutionary genomics
/
/
/
/Guest scientist at the Max-Planck-Institut f?r Physik komplexer Systeme/
/(MPI-PKS)/
/Noethnitzer Str. 38/
/01187 Dresden
/
/
/
/Max Planck-Institute for Molecular Cell Biology and Genetics/
/
/(MPI-CBG)/
/
/
/Pfotenhauerstra?e 108 /
/
/
/01307 Dresden/
/
/
/
/
/
/
Phone: +49 351 210-2621
/
/Mail: prudent [ at ] mpi-cbg.de <http://mpi-cbg.de>
//---------------------------------------/



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