Calculate determinant of a matrix. More...
Public Member Functions | |
| integer function | calc_det_0d (det_0D, A) |
| private constant version More... | |
| integer recursive function | calc_det_3d (detA, A, n) |
| private array version More... | |
Detailed Description
Calculate determinant of a matrix.
This matrix can be defined on a 3-D grid or constant. The storage convention described in eq_vars.eq_2_type is used.
In the former case the size of the matrix (last two indices) should be small, as the direct formula employing cofactors is used through a recursive formulation.
In the latter case, lapack routines are used.
- See also
- Adapted from http://dualm.wordpress.com/2012/01/06/computing-determinant-in-fortran/
- Returns
- ierr
Definition at line 63 of file num_utilities.f90.
Member Function/Subroutine Documentation
◆ calc_det_0d()
| integer function num_utilities::calc_det::calc_det_0d | ( | real(dp), intent(inout) | det_0D, |
| real(dp), dimension(:,:), intent(in) | A | ||
| ) |
private constant version
- Parameters
-
[in,out] det_0d output [in] a input
Definition at line 622 of file num_utilities.f90.
◆ calc_det_3d()
| integer recursive function num_utilities::calc_det::calc_det_3d | ( | real(dp), dimension(:,:,:), intent(inout) | detA, |
| real(dp), dimension(:,:,:,:), intent(in) | A, | ||
| integer, intent(in) | n | ||
| ) |
private array version
- Parameters
-
[in,out] deta output [in] a input [in] n size of matrix
Definition at line 543 of file num_utilities.f90.
Here is the call graph for this function:The documentation for this interface was generated from the following file:
- /opt/PB3D/Modules/num_utilities.f90