reduce.h File Reference

#include <algorithm>
#include <cassert>
#include <cstddef>
#include <span>
#include <utility>
#include <vector>
#include "clustering/ndarray.h"

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Namespaces
namespace	clustering
namespace	clustering::math

Functions
template<class T, Layout L>
T	clustering::math::sum (const NDArray< T, 1, L > &x) noexcept
	Naive single-pass sum of a rank-1 array.
template<class T, Layout L>
std::size_t	clustering::math::argmin (const NDArray< T, 1, L > &x) noexcept
	Index of the first minimum in a rank-1 array.
template<class T, Layout L>
std::size_t	clustering::math::argmax (const NDArray< T, 1, L > &x) noexcept
	Index of the first maximum in a rank-1 array.
template<class T, Layout L>
void	clustering::math::topk (const NDArray< T, 1, L > &x, std::size_t k, std::span< std::size_t > outIdx) noexcept
	Indices of the top-k largest values, written in descending value order.