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Vattrinfo/vfainfo
intn Vattrinfo(int32
vgroup_id
, intn
attr_index,
char *
attr_name,
char *
data_type,
intn *
count,
intn *
size
)
vgroup_id
IN:
Vgroup identifier returned by
Vattach
attr_index
IN:
Index of the target attribute
attr_name
OUT:
Name of the target attribute
data_type
OUT:
Data type of the target attribute
count
OUT:
Number of values in the target attribute
size
OUT:
Size, in bytes, of the values of the target attribute
Purpose
Returns the name, data type, number of values, and the size of the values of the specified attribute of the specified vgroup identified by
vgroup_id
and
attr_index
.
Return value
Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.
Description
The values of the
attr_name
,
data_type
,
count
and
size
parameters can be set to NULL, if the information returned by these parameters are not needed.
The value of
attr_index
parameter is used as the index of the target vgroup attribute, and is zero-based. For example, a
attr_index
value of 4 would refer to the fifth attribute of the vgroup.
FORTRAN
integer function vfainfo(vgroup_id, attr_index, attr_name, data_type, count, size)
integer vgroup_id, attr_index, data_type, count, size
character* (*) attr_name
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HDF User's Reference Manual, Draft 06/09/97, NCSA HDF Development Group.