typedef union tag_comp_info
{
struct
{
/* Not used by SDsetcompress */
} jpeg;
struct
{
/* Not used by SDsetcompress */
} nbit;
struct
{ /* struct to contain info about how to compress */
/* size of the elements when skipping */
intn skp_size;
} skphuff;
struct
{ /* struct to contain info about how to compress */
/* or decompress a gzip encoded dataset */
/* how hard to work when compressing data */
intn level;
} deflate;
} comp_info;
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