num_utilities::calc_det Interface Reference

Calculate determinant of a matrix. More...

Public Member Functions
integer function	calc_det_0d (det_0d, a)
	private constant version
integer recursive function	calc_det_3d (deta, a, n)
	private array version

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 621 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 542 of file num_utilities.f90.

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The documentation for this interface was generated from the following file:

• /Users/toonweyens/Code/PB3D/Modules/num_utilities.f90