int SLOG_SetPreviewStatisticsSize(       SLOG_STREAM     *slog,
                                   const SLOG_uint32      stat_bin_size )
SLOG_SUCCESS is returned when no error is encountered.
SLOG_FAIL is returned when error is encounted.
SLOG_EOF is returned when End of file is encounted.
There are also SLOG_TRUE and SLOG_FALSE which are sued as boolean
values, in particular they are used in boolean functions which
are usually named as IsXXXXX(), AreXXXXX() and HasXXXXX().
Location:../src/slog_pstat.c