kalmar/Groups.jl
1
0
Fork 0
mirror of https://github.com/kalmarek/Groups.jl.git synced 2024-11-19 06:30:29 +01:00
Code Issues Releases Wiki Activity

add doc to reduce function

Browse Source
This commit is contained in:
kalmar 2017-05-11 18:03:46 +02:00
parent f9ccff01a8
commit 9b48932ab4
1 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/Groups.jl
View File

@ -83,7 +83,7 @@ function free_reduce!(W::GWord)
return reduced
end
function reduce!{T}(W::GWord{T})
function reduce!(W::GWord)
if length(W) < 2
deleteat!(W.symbols, find(x -> x.pow == 0, W.symbols))
else
@ -94,12 +94,20 @@ function reduce!{T}(W::GWord{T})
end
W.modified = false
W.savedhash = hash(W.symbols,hash(typeof(W)))
W.savedhash = hash(W.symbols, hash(typeof(W)))
return W
end
reduce(W::GWord) = reduce!(deepcopy(W))
doc"""
reduce(W::GWord)
> performs reduction/simplification of a group element (word in generators).
> The default reduction is the free group reduction, i.e. consists of
> multiplying adjacent symbols with the same `str` identifier and deleting the
> identity elements from `W.symbols`.
> More specific procedures should be dispatched on `GWord`s type parameter.
"""
reduce(W::GWord) = reduce!(deepcopy(W))
function (==){T}(W::GWord{T}, Z::GWord{T})
W.modified && reduce!(W) # reduce clears the flag and recalculate the hash