col.hpp

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#ifndef STAN_MATH_OPENCL_PRIM_COL_HPP
#define STAN_MATH_OPENCL_PRIM_COL_HPP
#ifdef STAN_OPENCL
 
#include <stan/math/opencl/matrix_cl.hpp>
#include <stan/math/opencl/prim/block.hpp>
 
namespace stan {
namespace math {
 
template <typename T_x,
          typename = require_nonscalar_prim_or_rev_kernel_expression_t<T_x>>
inline auto col(T_x&& x, size_t j) {  // NOLINT
  return block(std::forward<T_x>(x), 1, j, x.rows(), 1);
}
}  // namespace math
}  // namespace stan
#endif
#endif