diff options
| -rw-r--r-- | erts/doc/src/zlib.xml | 6 | ||||
| -rw-r--r-- | erts/preloaded/src/zlib.erl | 6 | ||||
| -rw-r--r-- | lib/kernel/test/zlib_SUITE.erl | 6 |
3 files changed, 8 insertions, 10 deletions
diff --git a/erts/doc/src/zlib.xml b/erts/doc/src/zlib.xml index 673b743e2e..1f10ddef6d 100644 --- a/erts/doc/src/zlib.xml +++ b/erts/doc/src/zlib.xml @@ -99,7 +99,7 @@ list_to_binary([Compressed|Last])</pre> <datatype> <name name="zwindowbits"/> <desc> - <p>Normally in the range <c>-15..-9 | 9..15</c>.</p> + <p>Normally in the range <c>-15..-8 | 8..15</c>.</p> </desc> </datatype> </datatypes> @@ -149,7 +149,7 @@ list_to_binary([Compressed|Last])</pre> currently the only supported method is <c>deflated</c>.</p> <p>The <c><anno>WindowBits</anno></c> parameter is the base two logarithm of the window size (the size of the history buffer). It - should be in the range 9 through 15. Larger values + should be in the range 8 through 15. Larger values of this parameter result in better compression at the expense of memory usage. The default value is 15 if <c>deflateInit/2</c>. A negative <c><anno>WindowBits</anno></c> @@ -288,7 +288,7 @@ list_to_binary([B1,B2])</pre> <p>Initialize decompression session on zlib stream.</p> <p>The <c><anno>WindowBits</anno></c> parameter is the base two logarithm of the maximum window size (the size of the history buffer). - It should be in the range 9 through 15. + It should be in the range 8 through 15. The default value is 15 if <c>inflateInit/1</c> is used. If a compressed stream with a larger window size is given as input, inflate() will throw the <c>data_error</c> diff --git a/erts/preloaded/src/zlib.erl b/erts/preloaded/src/zlib.erl index 5ebc67dcaa..61dc642536 100644 --- a/erts/preloaded/src/zlib.erl +++ b/erts/preloaded/src/zlib.erl @@ -126,7 +126,7 @@ -type zlevel() :: 'none' | 'default' | 'best_compression' | 'best_speed' | 0..9. -type zmethod() :: 'deflated'. --type zwindowbits() :: -15..-9 | 9..47. +-type zwindowbits() :: -15..-8 | 8..47. -type zmemlevel() :: 1..9. -type zstrategy() :: 'default' | 'filtered' | 'huffman_only' | 'rle'. @@ -531,8 +531,8 @@ arg_method(_) -> erlang:error(badarg). -spec arg_bitsz(zwindowbits()) -> zwindowbits(). arg_bitsz(Bits) when is_integer(Bits) andalso - ((8 < Bits andalso Bits < 48) orelse - (-15 =< Bits andalso Bits < -8)) -> + ((8 =< Bits andalso Bits < 48) orelse + (-15 =< Bits andalso Bits =< -8)) -> Bits; arg_bitsz(_) -> erlang:error(badarg). diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl index e99151284f..41c19fce51 100644 --- a/lib/kernel/test/zlib_SUITE.erl +++ b/lib/kernel/test/zlib_SUITE.erl @@ -146,8 +146,6 @@ api_deflateInit(Config) when is_list(Config) -> ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-20,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-7,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,7,8,default)), - ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-8,8,default)), - ?m(?BARG, zlib:deflateInit(Z1,default,deflated,8,8,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-15,0,default)), ?m(?BARG, zlib:deflateInit(Z1,default,deflated,-15,10,default)), @@ -169,7 +167,7 @@ api_deflateInit(Config) when is_list(Config) -> ?m(ok, zlib:deflateInit(Z12,default,deflated,-Wbits,8,default)), ?m(ok,zlib:close(Z11)), ?m(ok,zlib:close(Z12)) - end, lists:seq(9, 15)), + end, lists:seq(8, 15)), lists:foreach(fun(MemLevel) -> ?line Z = zlib:open(), @@ -277,7 +275,7 @@ api_inflateInit(Config) when is_list(Config) -> ?m(ok, zlib:inflateInit(Z12,-Wbits)), ?m(ok,zlib:close(Z11)), ?m(ok,zlib:close(Z12)) - end, lists:seq(9,15)), + end, lists:seq(8,15)), ?m(?BARG, zlib:inflateInit(gurka, -15)), ?m(?BARG, zlib:inflateInit(Z1, 7)), ?m(?BARG, zlib:inflateInit(Z1, -7)), |