int32 Htrunc(int32 h_id, int32 trunc_len)
h_id
IN:
Access identifier returned by Hstartread or Hnextread
trunc_len
Length to truncate element
Purpose
Truncates the data object specified by the h_id to the length trunc_len.
Return value
Returns the length of a data element if found and FAIL (or -1) otherwise.
Description
Htrunc does not handle special elements.