list_tensors.h

// Copyright 2023, UChicago Argonne, LLC
// All Rights Reserved
// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
// OPEN SOURCE LICENSE (MIT)
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#pragma once
 
#include "neml2/tensors/BatchTensor.h"
 
namespace neml2
{
template <typename F, typename T1, typename T2>
BatchTensor
list_derivative_outer_product_a(F && f, const T1 & a, const T2 & b)
{
  return BatchTensor(f(a, b.list_unsqueeze()), b.batch_dim());
}
 
template <typename F, typename T1, typename T2>
BatchTensor
list_derivative_outer_product_b(F && f, const T1 & a, const T2 & b)
{
  return BatchTensor(f(a.list_unsqueeze(), b), a.batch_dim()).base_movedim(0, a.base_dim());
}
 
template <typename F, typename T1, typename T2>
BatchTensor
list_derivative_outer_product_ab(F && f, const T1 & a, const T2 & b)
{
  return BatchTensor(f(a.batch_unsqueeze(-1), b.batch_unsqueeze(-2)), a.batch_dim() - 1)
      .base_movedim(1, 1 + a.base_dim());
}
 
} // namespace neml2