The compress() function shall attempt to compress sourceLen bytes of data in the buffer source, placing the result in the buffer dest.
On entry, destLen should point to a value describing the size of the dest buffer. The application should ensure that this value be at least (sourceLen × 1.001) + 12. On successful exit, the variable referenced by destLen shall be updated to hold the length of compressed data in dest.
The compress() function is equivalent to
compress2() with a level of
On success, compress() shall return Z_OK. Otherwise, compress() shall return a value to indicate the error.
On error, compress() shall return a value as described below:
The buffer dest was not large enough to hold the compressed data.