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qp2/src/dav_general_mat
Anthony Scemama d387ee549a
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Fix compilation with gfortran
2022-11-01 10:21:36 +01:00
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dav_diag_dressed_ext_rout.irp.f Fix compilation with gfortran 2022-11-01 10:21:36 +01:00
dav_double_dress_ext_rout.irp.f Fix compilation with gfortran 2022-11-01 10:21:36 +01:00
dav_dressed_ext_rout.irp.f Fix compilation with gfortran 2022-11-01 10:21:36 +01:00
dav_ext_rout.irp.f Fix compilation with gfortran 2022-11-01 10:21:36 +01:00
dav_general.irp.f Fix compilation with gfortran 2022-11-01 10:21:36 +01:00
NEED added dav_general_mat to src 2021-07-02 16:18:13 +02:00
README.rst added some documentation in the README.rst for dav_general_mat 2021-07-02 18:12:37 +02:00
test_dav.irp.f added dav_dressed_ext_rout.irp.f 2021-09-28 00:30:10 +02:00

===============
dav_general_mat
===============

This modules allows to use the Davidson Algorithm for general squared symmetric matrices 
You have two options : 
 a)  the routine "davidson_general" to whom you pass the matrix you want to diagonalize
 b)  the routine "davidson_general_ext_rout" to whom you pass the subroutine that realizes v = H u 

See the routines in "test_dav.irp.f" for a clear example.