From 7bf6e952b53699977f5091a78f0f9f48f7b359c5 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Tue, 9 Nov 2021 10:13:59 +0100
Subject: Generalized code to easily allow mixed p-spins.

---
 tensor.hpp | 18 +++---------------
 1 file changed, 3 insertions(+), 15 deletions(-)

(limited to 'tensor.hpp')

diff --git a/tensor.hpp b/tensor.hpp
index aa33069..fc99042 100644
--- a/tensor.hpp
+++ b/tensor.hpp
@@ -111,27 +111,15 @@ Tensor<Scalar, p> plantState(const Tensor<Scalar, p>& J, const Vector<Scalar>& z
 }
 
 template <class Scalar>
-Matrix<Scalar> contractDown(const Tensor<Scalar, 2>& J, const Vector<Scalar>& z) {
-  return Eigen::Map<const Matrix<Scalar>>(J.data(), z.size(), z.size());
+Tensor<Scalar, 3> contractDown(const Tensor<Scalar, 3>& J, const Vector<Scalar>& z) {
+  return J;
 }
 
 const std::array<Eigen::IndexPair<int>, 1> ip00 = {Eigen::IndexPair<int>(0, 0)};
 
 template <class Scalar, int r>
-Matrix<Scalar> contractDown(const Tensor<Scalar, r>& J, const Vector<Scalar>& z) {
+Tensor<Scalar, 3> contractDown(const Tensor<Scalar, r>& J, const Vector<Scalar>& z) {
   Tensor<Scalar, 1> zT = Eigen::TensorMap<Tensor<const Scalar, 1>>(z.data(), {z.size()});
   Tensor<Scalar, r - 1> Jz = J.contract(zT, ip00);
   return contractDown(Jz, z);
 }
-
-template <int f, class Scalar>
-Tensor<Scalar, f> contractDownTo(const Tensor<Scalar, f>& J, const Vector<Scalar>& z) {
-  return J;
-}
-
-template <int f, class Scalar, int r>
-Tensor<Scalar, f> contractDownTo(const Tensor<Scalar, r>& J, const Vector<Scalar>& z) {
-  Tensor<Scalar, 1> zT = Eigen::TensorMap<Tensor<const Scalar, 1>>(z.data(), {z.size()});
-  Tensor<Scalar, r - 1> Jz = J.contract(zT, ip00);
-  return contractDownTo<f>(Jz, z);
-}
-- 
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