elementwise_multiply#

Header: <pressio/ops.hpp>

API#

namespace pressio { namespace ops{

template <class T, class T1, class T2, class alpha_t, class beta_t>
void elementwise_multiply(
    const alpha_t & alpha,
    const T & x,
    const T1 & z,
    const beta_t & beta,
    T2 & y
);

}} // end namespace pressio::ops

Description#

  • Computes y = beta * y + alpha * (x ⊙ z), where ⊙ denotes element-wise multiplication, and stores the result in y

  • T, T1, and T2 must be one-dimensional containers with compatible scalar types:

    • an Eigen vector

    • a Kokkos rank-1 view

    • a Tpetra vector

    • a Tpetra block vector

    • a pressio expression, i.e. pressio::diag, pressio::span, pressio::subspan, based on Eigen or Kokkos container

Notes#

  • See the ops homepage for a table of booleans to use when checking that T, T1, and T2 have the correct types.