Merge pull request #205 from JuliaReach/lf-204

fix #204
JuliaReach · Feb 24, 2022 · 409769d · 409769d · schillic · Feb 24, 2022
2 parents 173cfa9 + e45c4a1
commit 409769d
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diff --git a/Project.toml b/Project.toml
@@ -1,6 +1,6 @@
 name = "IntervalMatrices"
 uuid = "5c1f47dc-42dd-5697-8aaa-4d102d140ba9"
-version = "0.8.2"
+version = "0.8.3"
 
 [deps]
 IntervalArithmetic = "d1acc4aa-44c8-5952-acd4-ba5d80a2a253"

diff --git a/src/matrix.jl b/src/matrix.jl
@@ -184,3 +184,12 @@ function ±(C::MT, S::MT) where {T, MT<:AbstractMatrix{T}}
 
     return IntervalMatrix(map((x, y) -> x ± y, C, S))
 end
+
+for op in (:Adjoint, :Bidiagonal, :Diagonal, :Hermitian,
+           :SymTridiagonal, :Symmetric, :Transpose, :Tridiagonal)
+    @eval LinearAlgebra.$op(A::IntervalMatrix) = IntervalMatrix($op(A.mat))
+end
+
+if VERSION >= v"1.3"
+    LinearAlgebra.UpperHessenberg(A::IntervalMatrix) = IntervalMatrix(UpperHessenberg(A.mat))
+end
diff --git a/test/constructors.jl b/test/constructors.jl
@@ -40,3 +40,13 @@ end
     @test m2 isa IntervalMatrix{Float64}
     @test eltype(m2) == Complex{Interval{Float64}}
 end
+
+@testset "special matrices" begin
+    A = rand(IntervalMatrix)
+    Aₛ = Symmetric(A)
+
+    @test Aₛ isa IntervalMatrix
+    @test Aₛ.mat isa Symmetric
+
+    @test Matrix(Aₛ) isa Matrix
+end