Arguments

 

context

   OpenVMS usage:context
   type:         longword (unsigned)
   access:       read only
   mechanism:    by reference
   Value identifying the data stream that DCX$COMPRESS_DATA
   compresses. The context argument is the address of a longword
   containing this value. DCX$COMPRESS_INIT initializes the value;
   you should not modify it. You can define multiple context
   arguments to identify multiple data streams that are processed
   simultaneously.
 

in_rec

   OpenVMS usage:char_string
   type:         character string
   access:       read only
   mechanism:    by descriptor
   Data record to be compressed. The in_rec argument is the address
   of the descriptor of the data record string.
 

out_rec

   OpenVMS usage:char_string
   type:         character string
   access:       write only
   mechanism:    by descriptor
   Data record that has been compressed. The out_rec argument is
   the address of the descriptor of the compressed record that
   DCX$COMPRESS_DATA returns.
 

 

out_length

   OpenVMS usage:word_signed
   type:         word integer (signed)
   access:       write only
   mechanism:    by reference
   Length (in bytes) of the compressed data record. The out_length
   argument is the address of a word into which DCX$COMPRESS_DATA
   returns the length of the compressed data record.