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Fix hash function (use 2 arg form) #187

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Merged
merged 1 commit into from
Jan 13, 2020
Merged

Fix hash function (use 2 arg form) #187

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7 changes: 5 additions & 2 deletions src/types.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -279,12 +279,15 @@ function get_args(ex::Basic)
end

## so that Dicts will work
Base.hash(ex::Basic) = ccall((:basic_hash, libsymengine), UInt, (Ref{Basic}, ), ex)
basic_hash(ex::Basic) = ccall((:basic_hash, libsymengine), UInt, (Ref{Basic}, ), ex)
# similar definition as in Base for general objects
Base.hash(ex::Basic, h::UInt) = Base.hash_uint(3h - basic_hash(ex))
Base.hash(ex::BasicType, h::UInt) = hash(Basic(ex), h)

function coeff(b::Basic, x::Basic, n::Basic)
c = Basic()
ccall((:basic_coeff, libsymengine), Nothing, (Ref{Basic}, Ref{Basic}, Ref{Basic}, Ref{Basic}), c, b, x, n)
return c
end

coeff(b::Basic, x::Basic) = coeff(b, x, one(Basic))
coeff(b::Basic, x::Basic) = coeff(b, x, one(Basic))