// credit bobobobo.wordpress.com/2008/02/23/how-to-use-zlib

// now uncompress
    z_result = uncompress(

        dataUncompressed,       // destination for the uncompressed
                                // data.  This should be the size of
                                // the original data, which you should
                                // already know.

        &sizeDataUncompressed,  // length of destination (uncompressed)
                                // buffer

        dataReadInCompressed,   // source buffer - the compressed data

        sizeDataCompressed );   // length of compressed data in bytes

    switch( z_result )
    {
    case Z_OK:
        printf("***** SUCCESS! *****\n");
        break;

    case Z_MEM_ERROR:
        printf("out of memory\n");
        exit(1);    // quit.
        break;

    case Z_BUF_ERROR:
        printf("output buffer wasn't large enough!\n");
        exit(1);    // quit.
        break;
    }