public static EigenResult <N, double> geev <N>(Matrix256 <N, double> A)
where N : unmanaged, ITypeNat
{
var n = nat32i <N>();
var lda = n;
var ldvl = n;
var ldvr = n;
var wslen = n * n;
var exitcode = 0;
var v = 'V';
var wr = NatSpans.alloc <N, double>();
var wi = NatSpans.alloc <N, double>();
var lVec = A.Replicate();
var rVec = A.Replicate();
exitcode = LAPACK.LAPACKE_dgeev(RowMajor, v, v, n, ref head(A), lda, ref wr.First, ref wi.First,
ref head(lVec), ldvl, ref head(rVec), ldvr);
if (exitcode != 0)
{
MklException.Throw(exitcode);
}
return(EigenResult.Define(FromPaired <N, double>(wr, wi), lVec, rVec));
}
public static EigenResult <N, double> geev <N>(BlockMatrix <N, double> A)
where N : ITypeNat, new()
{
var n = nati <N>();
var lda = n;
var ldvl = n;
var ldvr = n;
var wslen = n * n;
var exitcode = 0;
var v = 'V';
var wr = NatSpan.Alloc <N, double>();
var wi = NatSpan.Alloc <N, double>();
var lVec = A.Replicate(true);
var rVec = A.Replicate(true);
exitcode = LAPACK.LAPACKE_dgeev(RowMajor, v, v, n, ref head(A), lda, ref head(wr), ref head(wi),
ref head(lVec), ldvl, ref head(rVec), ldvr);
if (exitcode != 0)
{
MklException.Throw(exitcode);
}
return(EigenResult.Define(ComplexNumber.FromPaired <N, double>(wr, wi), lVec, rVec));
}