Skip to content

use basis/coefficients in expansion + #222

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
dlfivefifty merged 1 commit into from
Jun 11, 2026
Merged

use basis/coefficients in expansion + #222

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
10 changes: 5 additions & 5 deletions src/bases/bases.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -482,19 +482,19 @@ broadcastbasis(::typeof(+), a, b, c...) = broadcastbasis(+, broadcastbasis(+, a,
broadcastbasis(::typeof(-), a, b) = broadcastbasis(+, a, b)

@eval function layout_broadcasted(::NTuple{2,ExpansionLayout}, ::typeof(-), f, g)
S,c = arguments(f)
T,d = arguments(g)
S,c = basis(f),coefficients(f)
T,d = basis(g),coefficients(g)
ST = broadcastbasis(-, S, T)
ST * ((ST \ S) * c - (ST \ T) * d)
end

_plus_P_ldiv_Ps_cs(P, ::Tuple{}, ::Tuple{}) = ()
_plus_P_ldiv_Ps_cs(P, Q::Tuple, cs::Tuple) = tuple((P \ first(Q)) * first(cs), _plus_P_ldiv_Ps_cs(P, tail(Q), tail(cs))...)
function layout_broadcasted(::Tuple{Vararg{ExpansionLayout}}, ::typeof(+), fs...)
Ps = first.(arguments.(fs))
cs = last.(arguments.(fs))
Ps = map(basis, fs)
cs = map(coefficients, fs)
P = broadcastbasis(+, Ps...)
P * +(_plus_P_ldiv_Ps_cs(P, Ps, cs)...) # +((Ref(P) .\ Ps .* cs)...)
P * +(_plus_P_ldiv_Ps_cs(P, Ps, cs)...) # +((Ref(P) .\ (Ps .* cs))...)
end

function layout_broadcasted(::Tuple{Any,ExpansionLayout}, ::typeof(*), a, f)
Expand Down
Loading