id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc
23,"Support non-identity elements for scan, fold",seanl,,"It seems that the default value is ignored for {{{Prelude.snd $ Acc.scanl}}}.
For example

{{{
CUDA.run $ Prelude.snd $ Acc.scanl (+) 5 (Acc.use (fromList 10 [0..]) :: Acc (Vector Word32))
}}}

should produce

{{{
Array () [50]
}}}

however, it produces

{{{
Array () [45]
}}}

which is

{{{
0+ 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9
}}}

{{{
CUDA.run $ Prelude.snd $ Acc.scanl (*) 5 (Acc.use (fromList 10 [1..]) :: Acc (Vector Word32))
}}}

should produce 

{{{
Array () [18144000]
}}}

however it produces

{{{
Array () [3628800]
}}}

which is

{{{
1 * 2 * 3 * 4 * 5 * 6 * 7 * 8 * 9 * 10
}}}",feature request,closed,minor,,CUDA backend,0.8.0.0,fixed,,