aboutsummaryrefslogtreecommitdiffstats
path: root/lib/hipe/test/bs_SUITE_data/bs_bincomp.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/hipe/test/bs_SUITE_data/bs_bincomp.erl')
-rw-r--r--lib/hipe/test/bs_SUITE_data/bs_bincomp.erl79
1 files changed, 79 insertions, 0 deletions
diff --git a/lib/hipe/test/bs_SUITE_data/bs_bincomp.erl b/lib/hipe/test/bs_SUITE_data/bs_bincomp.erl
new file mode 100644
index 0000000000..082b83bab9
--- /dev/null
+++ b/lib/hipe/test/bs_SUITE_data/bs_bincomp.erl
@@ -0,0 +1,79 @@
+%%% -*- erlang-indent-level: 2 -*-
+%%%-------------------------------------------------------------------
+%%% File : bs_bincomp.erl
+%%% Author : Per Gustafsson <[email protected]>
+%%% Purpose : Test bit comprehensions
+%%% Created : 13 Sep 2006
+%%%-------------------------------------------------------------------
+-module(bs_bincomp).
+
+-export([test/0]).
+
+test() ->
+ ok = byte_aligned(),
+ ok = bit_aligned(),
+ ok = extended_byte_aligned(),
+ ok = extended_bit_aligned(),
+ ok = mixed(),
+ ok.
+
+byte_aligned() ->
+ <<"abcdefg">> = << <<(X+32)>> || <<X>> <= <<"ABCDEFG">> >>,
+ <<1:32/little,2:32/little,3:32/little,4:32/little>> =
+ << <<X:32/little>> || <<X:32>> <= <<1:32,2:32,3:32,4:32>> >>,
+ <<1:32/little,2:32/little,3:32/little,4:32/little>> =
+ << <<X:32/little>> || <<X:16>> <= <<1:16,2:16,3:16,4:16>> >>,
+ ok.
+
+bit_aligned() ->
+ <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>> =
+ << <<(X+32):7>> || <<X>> <= <<"ABCDEFG">> >>,
+ <<"ABCDEFG">> =
+ << <<(X-32)>> || <<X:7>> <= <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>> >>,
+ <<1:31/little,2:31/little,3:31/little,4:31/little>> =
+ << <<X:31/little>> || <<X:31>> <= <<1:31,2:31,3:31,4:31>> >>,
+ <<1:31/little,2:31/little,3:31/little,4:31/little>> =
+ << <<X:31/little>> || <<X:15>> <= <<1:15,2:15,3:15,4:15>> >>,
+ ok.
+
+extended_byte_aligned() ->
+ <<"abcdefg">> = << <<(X+32)>> || X <- "ABCDEFG" >>,
+ "abcdefg" = [(X+32) || <<X>> <= <<"ABCDEFG">>],
+ <<1:32/little,2:32/little,3:32/little,4:32/little>> =
+ << <<X:32/little>> || X <- [1,2,3,4] >>,
+ [256,512,768,1024] =
+ [X || <<X:16/little>> <= <<1:16,2:16,3:16,4:16>>],
+ ok.
+
+extended_bit_aligned() ->
+ <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>> =
+ << <<(X+32):7>> || X <- "ABCDEFG" >>,
+ "ABCDEFG" = [(X-32) || <<X:7>> <= <<$a:7,$b:7,$c:7,$d:7,$e:7,$f:7,$g:7>>],
+ <<1:31/little,2:31/little,3:31/little,4:31/little>> =
+ << <<X:31/little>> || X <- [1,2,3,4] >>,
+ [256,512,768,1024] =
+ [X || <<X:15/little>> <= <<1:15,2:15,3:15,4:15>>],
+ ok.
+
+mixed() ->
+ <<2,3,3,4,4,5,5,6>> =
+ << <<(X+Y)>> || <<X>> <= <<1,2,3,4>>, <<Y>> <= <<1,2>> >>,
+ <<2,3,3,4,4,5,5,6>> =
+ << <<(X+Y)>> || <<X>> <= <<1,2,3,4>>, Y <- [1,2] >>,
+ <<2,3,3,4,4,5,5,6>> =
+ << <<(X+Y)>> || X <- [1,2,3,4], Y <- [1,2] >>,
+ [2,3,3,4,4,5,5,6] =
+ [(X+Y) || <<X>> <= <<1,2,3,4>>, <<Y>> <= <<1,2>>],
+ [2,3,3,4,4,5,5,6] =
+ [(X+Y) || <<X>> <= <<1,2,3,4>>, Y <- [1,2]],
+ <<2:3,3:3,3:3,4:3,4:3,5:3,5:3,6:3>> =
+ << <<(X+Y):3>> || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, <<Y:3>> <= <<1:3,2:3>> >>,
+ <<2:3,3:3,3:3,4:3,4:3,5:3,5:3,6:3>> =
+ << <<(X+Y):3>> || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, Y <- [1,2] >>,
+ <<2:3,3:3,3:3,4:3,4:3,5:3,5:3,6:3>> =
+ << <<(X+Y):3>> || X <- [1,2,3,4], Y <- [1,2] >>,
+ [2,3,3,4,4,5,5,6] =
+ [(X+Y) || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, <<Y:3>> <= <<1:3,2:3>>],
+ [2,3,3,4,4,5,5,6] =
+ [(X+Y) || <<X:3>> <= <<1:3,2:3,3:3,4:3>>, Y <- [1,2]],
+ ok.