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subroutine | expsym2d_t (x, z, zd) |
| Use the Taylor-series method (eigenvalues both fairly close to zero). More...
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Definition at line 28 of file psym2.f90.
subroutine psym2::expsym2d_t::expsym2d_t |
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real(dp), dimension(2,2), intent(in) |
x, |
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real(dp), dimension(2,2), intent(out) |
z, |
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real(dp), dimension(2,2,2,2), intent(out) |
zd |
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) |
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private |
Use the Taylor-series method (eigenvalues both fairly close to zero).
For a 2*2 symmetric matrix x, try to get both the z=exp(x) and dz/dx using the Taylor series expansion method.
- Parameters
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[in] | x | symmetric 2*2 positive-definite matrix |
[out] | z | Taylor series expansion method exp(x) |
[out] | zd | symmetric derivative |
- Author
- R. J. Purser
Definition at line 346 of file psym2.f90.
The documentation for this interface was generated from the following file:
- /scratch1/NCEPDEV/da/George.Gayno/ufs_utils.git/UFS_UTILS.upstream/sorc/grid_tools.fd/regional_esg_grid.fd/psym2.f90