mcf_dmm_load_set — Load data set in Dynamic Memory
subroutine mcf_dmm_load_set(handle,name,type,size, ident,status) subroutine mcf_dmm_load_subset(handle,name,type,idiv,size, ident,status) integer*4 handle character*(*) name character*4 type mcf_size idiv mcf_size size integer*4 ident integer*4 status
mcf_load_set
loads the entire dataset
name
from a database file identified by
handle
in Dynamic Memory and returns the DMM
identifier ident
.
mcf_load_subset
loads a subset of the dataset
name
from a database file identified by
handle
in Dynamic Memory and returns the DMM
identifier ident
. The address of the set in
Dynamic Memory can be retrieved with the dmmptr
function. Any dataset with the same name and database unit
identifier already residing in Dynamic Memory will be overwritten.
If this is not desired, remove the dataset in DMM with
mcf_dmm_delete
.
Note | |
---|---|
In contrast to the old f77 API functions dmmget and dmmload, this function will overload any existing dataset with the same name and handle already residing in Dynamic Memory, i.e all data of the dataset in Dynamic Memory will be overwritten. |
handle
Handle of database file on which the set resides (input).
name
Name of dataset to be read from the database file (input). The string may not exceed the maximum dataset name length.
type
Dataset type associated to ident
(input). The character buffer must be dimensioned to 4
characters at least. type
will be one of I,
J, E, C, F, Z. The type is always defined!
Subset index (input). idiv
must be in
the range of 1 to the number of subset (row) in the
dataset.
pos
Position relative to the beginning of the set from which data are being written (input). Positions start with the index 1.
size
Number of data elements to be read (input).
ident
DMM identifier returned by the function (output). In case of an error ident remains undefined.
status
Status code returned (output). Upon successful completion of the operation, the status value 0 is returned. A negative value is returned if an error has been detected. A positive value is returned if a warning has been issued.