Update antihermiticity check

Author: kshyatt

ext/MatrixAlgebraKitAMDGPUExt/MatrixAlgebraKitAMDGPUExt.jl

@@ -143,7 +143,7 @@ MatrixAlgebraKit.isantihermitian_exact(A::Diagonal{T, <:StridedROCVector{T}}) wh
 MatrixAlgebraKit.isantihermitian_approx(A::StridedROCMatrix; kwargs...) =
     @invoke MatrixAlgebraKit.isantihermitian_approx(A::Any; kwargs...)
 function MatrixAlgebraKit.isantihermitian_approx(A::Diagonal{T, <:StridedROCVector{T}}; atol, rtol, kwargs...) where {T <: Real}
-    return sum(abs2, A.diag) ≤ max(atol, rtol * norm(A))
+    return norm(A) ≤ atol
 end
 
 function MatrixAlgebraKit._avgdiff!(A::StridedROCMatrix, B::StridedROCMatrix)

ext/MatrixAlgebraKitCUDAExt/MatrixAlgebraKitCUDAExt.jl

@@ -168,7 +168,7 @@ MatrixAlgebraKit.isantihermitian_exact(A::Diagonal{T, <:StridedCuVector{T}}) whe
 MatrixAlgebraKit.isantihermitian_approx(A::StridedCuMatrix; kwargs...) =
     @invoke MatrixAlgebraKit.isantihermitian_approx(A::Any; kwargs...)
 function MatrixAlgebraKit.isantihermitian_approx(A::Diagonal{T, <:StridedCuVector{T}}; atol, rtol, kwargs...) where {T <: Real}
-    return sum(abs2, A.diag) ≤ max(atol, rtol * norm(A))
+    return norm(A) ≤ atol
 end
 
 function MatrixAlgebraKit._avgdiff!(A::StridedCuMatrix, B::StridedCuMatrix)