1 | SUBROUTINE function_ana(ni, nj, xcoor, ycoor, fnc_ana) |
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2 | |
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3 | !**** *function ana* - calculate analytical function |
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4 | ! |
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5 | IMPLICIT NONE |
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6 | ! |
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7 | INTEGER, PARAMETER :: wp = SELECTED_REAL_KIND(12,307) ! double |
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8 | ! |
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9 | INTEGER, INTENT(IN) :: ni, nj |
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10 | REAL(kind=wp), DIMENSION(ni,nj), INTENT(IN) :: xcoor, ycoor |
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11 | REAL(kind=wp), DIMENSION(ni,nj), INTENT(OUT) :: fnc_ana |
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12 | ! |
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13 | REAL (kind=wp), PARAMETER :: dp_pi=3.14159265359 |
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14 | REAL (kind=wp), PARAMETER :: dp_conv = dp_pi/180. |
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15 | REAL(kind=wp) :: dp_length, coef, coefmult |
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16 | INTEGER :: i,j |
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17 | CHARACTER(LEN=7) :: cl_anaftype="fcos" |
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18 | ! |
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19 | DO j=1,nj |
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20 | DO i=1,ni |
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21 | ! |
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22 | SELECT CASE (cl_anaftype) |
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23 | CASE ("fcos") |
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24 | dp_length = 1.2*dp_pi |
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25 | coef = 2. |
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26 | coefmult = 1. |
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27 | fnc_ana(i,j) = coefmult*(coef - COS( dp_pi*(ACOS( COS(xcoor(i,j)*dp_conv)*COS(ycoor(i,j)*dp_conv) )/dp_length)) ) |
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28 | ! |
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29 | CASE ("fcossin") |
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30 | dp_length = 1.d0*dp_pi |
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31 | coef = 21.d0 |
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32 | coefmult = 3.846d0 * 20.d0 |
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33 | fnc_ana(i,j) = coefmult*(coef - COS( dp_pi*(ACOS( COS(ycoor(i,j)*dp_conv)*COS(ycoor(i,j)*dp_conv) )/dp_length)) * & |
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34 | SIN( dp_pi*(ASIN( SIN(xcoor(i,j)*dp_conv)*SIN(ycoor(i,j)*dp_conv) )/dp_length)) ) |
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35 | END SELECT |
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36 | ! |
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37 | ENDDO |
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38 | ENDDO |
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39 | ! |
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40 | END SUBROUTINE function_ana |
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