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perldl> help minv
  minv
    Compute inverse of a general square matrix using LU factorization.
    Supports inplace and threading. Uses getrf and getri or cgetrf and
    cgetri from Lapack and return "inverse, info" in array context.

     PDL(inv)  = minv(PDL)

     my $a = random(10,10);
     my $inv = minv($a);

    Docs from /usr/lib/perl5/PDL/LinearAlgebra.pm

perldl> help msolve
  msolve
    Solve linear system of equations using LU decomposition.

            A * X = B

    Returns X in scalar context else X, LU, pivot vector and info. B
    is overwrited by X if its inplace flag is set. Supports threading.
    Uses gesv or cgesv from Lapack.

    (PDL(X), (PDL(LU), PDL(pivot), PDL(info))) = msolve(PDL(A), PDL(B))

     my $a = random(5,5);
     my $b = random(10,5);
     my $X = msolve($a, $b);

    Docs from /usr/lib/perl5/PDL/LinearAlgebra.pm