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| subroutine | znfun (n, z, zn, znd, zndd, znddd) |
| | For a given nonnegative integer n and real argument z, evaluate the nth,...,(n+3)th derivatives, wrt z, of the function C(z) = cosh(sqrt(2z)) or, equivalently, of C(z) = cos(sqrt(-2z)), according to the sign of z.
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Definition at line 104 of file pmat4.f90.
◆ znfun()
| subroutine pmat4::znfun::znfun |
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integer(spi), intent(in) | n, |
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real(dp), intent(in) | z, |
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real(dp), intent(out) | zn, |
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real(dp), intent(out) | znd, |
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real(dp), intent(out) | zndd, |
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real(dp), intent(out) | znddd ) |
For a given nonnegative integer n and real argument z, evaluate the nth,...,(n+3)th derivatives, wrt z, of the function C(z) = cosh(sqrt(2z)) or, equivalently, of C(z) = cos(sqrt(-2z)), according to the sign of z.
- Parameters
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| [in] | n | integer order of the first of the returned derivatives of C. |
| [in] | z | real input argument in the function C(z) |
| [out] | zn | nth-derivative of C(z) |
| [out] | znd | (n+1)th-derivative of C(z) |
| [out] | zndd | (n+2)th-derivative of C(z) |
| [out] | znddd | (n+3)th-derivative of C(z) |
- Author
- R. J. Purser
Definition at line 1959 of file pmat4.f90.
References pietc::u0, pietc::u2, and pietc::u3.
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/pmat4.f90
1.11.0