Last change
on this file since 3114 was
1907,
checked in by lguez, 11 years ago
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Added a copyright property to every file of the distribution, except
for the fcm files (which have their own copyright). Use svn propget on
a file to see the copyright. For instance:
$ svn propget copyright libf/phylmd/physiq.F90
Name of program: LMDZ
Creation date: 1984
Version: LMDZ5
License: CeCILL version 2
Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539
See the license file in the root directory
Also added the files defining the CeCILL version 2 license, in French
and English, at the top of the LMDZ tree.
|
-
Property copyright set to
Name of program: LMDZ Creation date: 1984 Version: LMDZ5 License: CeCILL version 2 Holder: Laboratoire de m\'et\'eorologie dynamique, CNRS, UMR 8539 See the license file in the root directory
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File size:
843 bytes
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1 | module cumprod_m |
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2 | |
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3 | implicit none |
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4 | |
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5 | contains |
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6 | |
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7 | RECURSIVE FUNCTION cumprod(arr,seed) RESULT(ans) |
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8 | |
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9 | ! Cumulative product on an array, with optional multiplicative seed. |
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10 | |
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11 | USE nrtype, only: wp |
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12 | |
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13 | REAL(WP), DIMENSION(:), INTENT(IN) :: arr |
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14 | REAL(WP), OPTIONAL, INTENT(IN) :: seed |
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15 | REAL(WP), DIMENSION(size(arr)) :: ans |
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16 | |
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17 | ! Local: |
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18 | INTEGER n,j |
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19 | REAL(WP) :: sd |
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20 | INTEGER, PARAMETER :: NPAR_CUMPROD=8 |
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21 | |
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22 | !-------------------------------------------------------- |
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23 | |
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24 | n=size(arr) |
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25 | if (n == 0) RETURN |
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26 | sd=1.0_wp |
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27 | if (present(seed)) sd=seed |
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28 | ans(1)=arr(1)*sd |
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29 | if (n < NPAR_CUMPROD) then |
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30 | do j=2,n |
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31 | ans(j)=ans(j-1)*arr(j) |
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32 | end do |
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33 | else |
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34 | ans(2:n:2)=cumprod(arr(2:n:2)*arr(1:n-1:2),sd) |
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35 | ans(3:n:2)=ans(2:n-1:2)*arr(3:n:2) |
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36 | end if |
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37 | |
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38 | END FUNCTION cumprod |
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39 | |
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40 | end module cumprod_m |
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