pmat::ldum Interface Reference

Public Member Functions
subroutine	cldum (a, ipiv, d)
	Perform L*D*U decomposition, with pivoting, of square matrix.
subroutine	cldumf (a, ipiv, d, ff)
	Perform l-d-u decomposition of square matrix a in place with pivoting.
subroutine	dldum (a, ipiv, d)
	Perform L*D*U decomposition, with pivoting, of square matrix.
subroutine	dldumf (a, ipiv, d, ff)
	Perform l-d-u decomposition of square matrix a in place with pivoting.
subroutine	sldum (a, ipiv, d)
	Perform L*D*U decomposition, with pivoting, of square matrix.
subroutine	sldumf (a, ipiv, d, ff)
	Perform l-d-u decomposition of square matrix a in place with pivoting.

Detailed Description

Definition at line 27 of file pmat.f90.

Member Function/Subroutine Documentation

cldum()

subroutine pmat::ldum::cldum	(	complex(dpc), dimension(:,:), intent(inout)	a,
		integer(spi), dimension(:), intent(out)	ipiv,
		complex(dpc), intent(out)	d )

Perform L*D*U decomposition, with pivoting, of square matrix.

Complex double precision version.

Parameters

[in,out]	a	input square matrix, output L,D,U factors
[out]	d	determinant sign change indicator (+1 or -1)
[out]	ipiv	vector of pivots

Author

R. J. Purser

Definition at line 508 of file pmat.f90.

cldumf()

subroutine pmat::ldum::cldumf	(	complex(dpc), dimension(:,:), intent(inout)	a,
		integer(spi), dimension(:), intent(out)	ipiv,
		complex(dpc), intent(out)	d,
		logical, intent(out)	ff )

Perform l-d-u decomposition of square matrix a in place with pivoting.

Complex double precision version.

Parameters

[in,out]	a	square matrix to be factorized
[out]	ipiv	vector encoding the pivoting sequence
[out]	d	indicator for possible sign change of determinant
[out]	ff	failure flag, set to .true. when determinant of a vanishes.

Author

R. J. Purser

Definition at line 659 of file pmat.f90.

References pietc::c0, pietc::c1, pietc::f, pietc::t, pietc::u0, and pietc::u1.

dldum()

subroutine pmat::ldum::dldum	(	real(dp), dimension(:,:), intent(inout)	a,
		integer(spi), dimension(:), intent(out)	ipiv,
		real(dp), intent(out)	d )

Perform L*D*U decomposition, with pivoting, of square matrix.

Double precision version.

Parameters

[in,out]	a	input square matrix, output L,D,U factors
[out]	d	determinant sign change indicator (+1 or -1)
[out]	ipiv	vector of pivots

Author

R. J. Purser

Definition at line 492 of file pmat.f90.

dldumf()

subroutine pmat::ldum::dldumf	(	real(dp), dimension(:,:), intent(inout)	a,
		integer, dimension(:), intent(out)	ipiv,
		real(dp), intent(out)	d,
		logical(spi), intent(out)	ff )

Perform l-d-u decomposition of square matrix a in place with pivoting.

Double precision version.

Parameters

[in,out]	a	square matrix to be factorized
[out]	ipiv	vector encoding the pivoting sequence
[out]	d	indicator for possible sign change of determinant
[out]	ff	failure flag, set to .true. when determinant of a vanishes.

Author

R. J. Purser

Definition at line 592 of file pmat.f90.

References pietc::f, pietc::t, pietc::u0, and pietc::u1.

sldum()

subroutine pmat::ldum::sldum	(	real(sp), dimension(:,:), intent(inout)	a,
		integer(spi), dimension(:), intent(out)	ipiv,
		real(sp), intent(out)	d )

Perform L*D*U decomposition, with pivoting, of square matrix.

Single precision version.

Parameters

[in,out]	a	input square matrix, output L,D,U factors
[out]	d	determinant sign change indicator (+1 or -1)
[out]	ipiv	vector of pivots

Author

R. J. Purser

Definition at line 476 of file pmat.f90.

sldumf()

subroutine pmat::ldum::sldumf	(	real(sp), dimension(:,:), intent(inout)	a,
		integer(spi), dimension(:), intent(out)	ipiv,
		real(sp), intent(out)	d,
		logical, intent(out)	ff )

Perform l-d-u decomposition of square matrix a in place with pivoting.

Single precision version.

Parameters

[in,out]	a	square matrix to be factorized
[out]	ipiv	vector encoding the pivoting sequence
[out]	d	indicator for possible sign change of determinant
[out]	ff	failure flag, set to .true. when determinant of a vanishes.

Author

R. J. Purser

Definition at line 525 of file pmat.f90.

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

• /scratch4/NCEPDEV/nems/Brian.Curtis/git/BrianCurtis-NOAA/UFS_UTILS/v1_14_0/sorc/grid_tools.fd/regional_esg_grid.fd/pmat.f90