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*
* xreverse.F
*
* Ansley Manke
* Sep 15 2004
*
* This function returns the X values of the input variables,
* reversed and on an abstract x axis. Other axes are unchanged.
*
*
* In this subroutine we provide information about
* the function. The user configurable information
* consists of the following:
*
* descr Text description of the function
*
* num_args Required number of arguments
*
* axis_inheritance Type of axis for the result
* ( CUSTOM, IMPLIED_BY_ARGS, NORMAL, ABSTRACT )
* CUSTOM - user defined axis
* IMPLIED_BY_ARGS - same axis as the incoming argument
* NORMAL - the result is normal to this axis
* ABSTRACT - an axis which only has index values
*
* piecemeal_ok For memory optimization:
* axes where calculation may be performed piecemeal
* ( YES, NO )
*
*
* For each argument we provide the following information:
*
* name Text name for an argument
*
* unit Text units for an argument
*
* desc Text description of an argument
*
* axis_influence Are this argument's axes the same as the result grid?
* ( YES, NO )
*
* axis_extend How much does Ferret need to extend arg limits relative to result
*
SUBROUTINE xreverse_init(id)
INCLUDE 'ferret_cmn/EF_Util.cmn'
INTEGER id, arg
* **********************************************************************
* USER CONFIGURABLE PORTION |
* |
* V
CALL ef_set_desc(id,
. 'Returns values reversed in X direction on an abstract X axis')
CALL ef_set_num_args(id, 1)
CALL ef_set_axis_inheritance(id, ABSTRACT,
. IMPLIED_BY_ARGS, IMPLIED_BY_ARGS, IMPLIED_BY_ARGS)
CALL ef_set_piecemeal_ok(id, NO, NO, NO, NO)
arg = 1
CALL ef_set_arg_name(id, arg, 'A')
CALL ef_set_arg_unit(id, arg, ' ')
CALL ef_set_arg_desc(id, arg, 'Variable to reverse')
CALL ef_set_axis_influence(id, arg, NO, YES, YES, YES)
* ^
* |
* USER CONFIGURABLE PORTION |
* **********************************************************************
RETURN
END
SUBROUTINE xreverse_result_limits(id)
INCLUDE 'ferret_cmn/EF_Util.cmn'
INTEGER id
INTEGER arg_lo_ss(4,1:EF_MAX_ARGS), arg_hi_ss(4,1:EF_MAX_ARGS),
. arg_incr(4,1:EF_MAX_ARGS)
* **********************************************************************
* USER CONFIGURABLE PORTION |
* |
* V
INTEGER nx
CALL ef_get_arg_subscripts(id, arg_lo_ss, arg_hi_ss, arg_incr)
nx = arg_hi_ss(X_AXIS,ARG1) - arg_lo_ss(X_AXIS,ARG1) + 1
call ef_set_axis_limits(id, X_AXIS, 1, nx)
* ^
* |
* USER CONFIGURABLE PORTION |
* **********************************************************************
RETURN
END
*
* In this subroutine we compute the result
*
SUBROUTINE xreverse_compute(id, arg_1, result)
INCLUDE 'ferret_cmn/EF_Util.cmn'
INCLUDE 'ferret_cmn/EF_mem_subsc.cmn'
INTEGER id
REAL bad_flag(1:EF_MAX_ARGS), bad_flag_result
REAL arg_1(mem1lox:mem1hix, mem1loy:mem1hiy,
. mem1loz:mem1hiz, mem1lot:mem1hit)
REAL result(memreslox:memreshix, memresloy:memreshiy,
. memresloz:memreshiz, memreslot:memreshit)
* After initialization, the 'res_' arrays contain indexing information
* for the result axes. The 'arg_' arrays will contain the indexing
* information for each variable's axes.
INTEGER res_lo_ss(4), res_hi_ss(4), res_incr(4)
INTEGER arg_lo_ss(4,1:EF_MAX_ARGS), arg_hi_ss(4,1:EF_MAX_ARGS),
. arg_incr(4,1:EF_MAX_ARGS)
* **********************************************************************
* USER CONFIGURABLE PORTION |
* |
* V
INTEGER i,j,k,l
INTEGER i1,j1,k1,l1
CALL ef_get_res_subscripts(id, res_lo_ss, res_hi_ss, res_incr)
CALL ef_get_arg_subscripts(id, arg_lo_ss, arg_hi_ss, arg_incr)
CALL ef_get_bad_flags(id, bad_flag, bad_flag_result)
i = res_lo_ss(X_AXIS)
DO 400 i1 = arg_hi_ss(X_AXIS,ARG1), arg_lo_ss(X_AXIS,ARG1), -1
j = res_lo_ss(Y_AXIS)
DO 300 j1 = arg_lo_ss(Y_AXIS,ARG1), arg_hi_ss(Y_AXIS,ARG1)
k = res_lo_ss(Z_AXIS)
DO 200 k1 = arg_lo_ss(Z_AXIS,ARG1), arg_hi_ss(Z_AXIS,ARG1)
l = res_lo_ss(T_AXIS)
DO 100 l1 = arg_lo_ss(T_AXIS,ARG1),arg_hi_ss(T_AXIS,ARG1)
IF (arg_1(i1,j1,k1,l1) .EQ. bad_flag(ARG1)) THEN
result(i,j,k,l) = bad_flag_result
ELSE
result(i,j,k,l) = arg_1(i1,j1,k1,l1)
ENDIF
l = l + res_incr(T_AXIS)
100 CONTINUE
k = k + res_incr(Z_AXIS)
200 CONTINUE
j = j + res_incr(Y_AXIS)
300 CONTINUE
i = i + res_incr(X_AXIS)
400 CONTINUE
* ^
* |
* USER CONFIGURABLE PORTION |
* **********************************************************************
RETURN
END
|
