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Last change
on this file since 5325 was
4773,
checked in by idelkadi, 11 months ago
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- Update of Ecrad in LMDZ
The same organization of the Ecrad offline version is retained in order to facilitate the updating of Ecrad in LMDZ and the comparison between online and offline results.
version 1.6.1 of Ecrad (https://github.com/lguez/ecrad.git)
- Implementation of the double call of Ecrad in LMDZ
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File size:
652 bytes
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| 1 | program test_fast_expm |
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| 2 | ! Test the fast matrix exponential exchange routine used for |
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| 3 | ! SPARTACUS shortwave entrapment calculations, but which can fail in |
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| 4 | ! single precision for very specific inputs leading to the matrix |
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| 5 | ! having two repeated eigenvalues |
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| 6 | |
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| 7 | use parkind1, only : jprb |
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| 8 | |
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| 9 | use radiation_matrix, only : fast_expm_exchange_3 |
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| 10 | |
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| 11 | real(jprb) :: a(1), b(1), c(1), d(1), r(1,3,3) |
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| 12 | |
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| 13 | a = 9.0408579E-02_jprb |
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| 14 | b = 9.2716664E-07_jprb |
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| 15 | c = 2.2503915E-03_jprb |
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| 16 | d = 8.8152386E-02_jprb |
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| 17 | |
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| 18 | call fast_expm_exchange_3(1,1,a(1:1),b(1:1),c(1:1),d(1:1),r) |
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| 19 | |
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| 20 | print *, r |
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| 21 | print *, 0.0000001 |
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| 22 | print *, epsilon(1.0_jprb) |
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| 23 | |
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| 24 | end program test_fast_expm |
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