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Editing: norm.hpp

#ifndef PYTHONIC_INCLUDE_NUMPY_LINALG_NORM_HPP
#define PYTHONIC_INCLUDE_NUMPY_LINALG_NORM_HPP

#include "pythonic/include/numpy/sqrt.hpp"
#include "pythonic/include/builtins/pythran/abssqr.hpp"
#include "pythonic/include/numpy/sum.hpp"
#include "pythonic/include/numpy/asfarray.hpp"

PYTHONIC_NS_BEGIN
namespace numpy
{
  namespace linalg
  {
    template <class Array>
    auto norm(Array &&array, types::none_type ord = {},
              types::none_type axis = {})
        -> decltype(
            pythonic::numpy::functor::sqrt{}(pythonic::numpy::functor::sum{}(
                pythonic::builtins::pythran::functor::abssqr{}(
                    std::forward<Array>(array)))));

template <class Array>
    using norm_dtype_t = typename std::conditional<
        std::is_floating_point<
            typename std::decay<Array>::type::dtype()>::value,
        typename std::decay<Array>::type::dtype(), double>::type;

template <class Array>
    using norm_t = typename std::conditional<
        std::decay<Array>::type::value == 1, norm_dtype_t<Array>,
        types::ndarray<
            norm_dtype_t<Array>,
            types::array<long, std::decay<Array>::type::value - 1>>>::type;

template <class Array>
    norm_t<Array> norm(Array &&array, double ord, types::none_type axis = {});

template <class Array>
    norm_t<Array> norm(Array &&array, types::none_type ord, double axis);

template <class Array>
    norm_t<Array> norm(Array &&array, double ord, long axis);

template <class Array>
    norm_t<Array> norm(Array &&array, double ord, types::array<long, 1> axis);

template <class Array>
    norm_t<Array> norm(Array &&array, double ord, types::array<long, 2> axis);
    DEFINE_FUNCTOR(pythonic::numpy::linalg, norm);
  }
}
PYTHONIC_NS_END

#endif

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