psym2::logsym2 Interface Reference

Public Member Functions
subroutine	logsym2 (em, logem)
	Get the log of a symmetric positive-definite 2*2 matrix.
subroutine	logsym2d (x, z, zd)
	General routine to evaluate the logarithm, z=log(x), and the symmetric derivative, zd = dz/dx, where x is a symmetric 2*2 positive-definite matrix.

Detailed Description

Definition at line 29 of file psym2.f90.

Constructor & Destructor Documentation

logsym2()

subroutine psym2::logsym2::logsym2	(	real(dp), dimension(2,2), intent(in)	em,
		real(dp), dimension(2,2), intent(out)	logem )

Get the log of a symmetric positive-definite 2*2 matrix.

Parameters

[in]	em	symmetric 2*2 matrix
[out]	logem	log of a symmetric positive-definite 2*2 matrix

Author

R. J. Purser

Definition at line 386 of file psym2.f90.

References pietc::u0.

Member Function/Subroutine Documentation

logsym2d()

subroutine psym2::logsym2::logsym2d	(	real(dp), dimension(2,2), intent(in)	x,
		real(dp), dimension(2,2), intent(out)	z,
		real(dp), dimension(2,2,2,2), intent(out)	zd )

General routine to evaluate the logarithm, z=log(x), and the symmetric derivative, zd = dz/dx, where x is a symmetric 2*2 positive-definite matrix.

Parameters

[in]	zd	the symmetric derivative
[out]	x	a symmetric 2*2 positive-definite matrix
[out]	z	evaluate the logarithm log(x)

Author

R. J. Purser

Definition at line 408 of file psym2.f90.

References pietc::o2, pietc::u0, and pietc::u1.

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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/psym2.f90