reduce.hpp

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/// @file kernel/reduce.hpp
/// @brief Scalar reduction kernels  (namespace num::kernel::reduce)
#pragma once
 
#include "core/types.hpp"
#include "core/vector.hpp"
#include "kernel/policy.hpp"
 
namespace num::kernel::reduce {
 
/// @brief Sequential l1 norm.
[[nodiscard]] real l1_norm(const Vector& x, seq_t) noexcept;
 
/// @brief Parallel l1 norm.
[[nodiscard]] real l1_norm(const Vector& x, par_t);
 
[[nodiscard]] inline real l1_norm(const Vector& x) {
    return l1_norm(x, default_policy{});
}
 
/// @brief Sequential infinity norm.
[[nodiscard]] real linf_norm(const Vector& x, seq_t) noexcept;
 
/// @brief Parallel infinity norm.
[[nodiscard]] real linf_norm(const Vector& x, par_t);
 
[[nodiscard]] inline real linf_norm(const Vector& x) {
    return linf_norm(x, default_policy{});
}
 
/// @brief Sequential sum.
[[nodiscard]] real sum(const Vector& x, seq_t) noexcept;
 
/// @brief Parallel sum.
[[nodiscard]] real sum(const Vector& x, par_t);
 
[[nodiscard]] inline real sum(const Vector& x) {
    return sum(x, default_policy{});
}
 
} // namespace num::kernel::reduce