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/***************************************************************************
* Copyright (c) Johan Mabille, Sylvain Corlay, Wolf Vollprecht and *
* Martin Renou *
* Copyright (c) QuantStack *
* *
* Distributed under the terms of the BSD 3-Clause License. *
* *
* The full license is in the file LICENSE, distributed with this software. *
****************************************************************************/
#ifndef XSIMD_HORNER_HPP
#define XSIMD_HORNER_HPP
#include "../types/xsimd_types_include.hpp"
#include "xsimd_estrin.hpp"
namespace xsimd
{
/**********
* horner *
**********/
/* origin: boost/simdfunction/horn.hpp*/
/*
* ====================================================
* copyright 2016 NumScale SAS
*
* Distributed under the Boost Software License, Version 1.0.
* (See copy at http://boost.org/LICENSE_1_0.txt)
* ====================================================
*/
template <class T>
inline T horner(const T&) noexcept
{
return T(0.);
}
template <class T, uint64_t c0>
inline T horner(const T&) noexcept
{
return detail::coef<T, c0>();
}
template <class T, uint64_t c0, uint64_t c1, uint64_t... args>
inline T horner(const T& x) noexcept
{
return fma(x, horner<T, c1, args...>(x), detail::coef<T, c0>());
}
/***********
* horner1 *
***********/
/* origin: boost/simdfunction/horn1.hpp*/
/*
* ====================================================
* copyright 2016 NumScale SAS
*
* Distributed under the Boost Software License, Version 1.0.
* (See copy at http://boost.org/LICENSE_1_0.txt)
* ====================================================
*/
template <class T>
inline T horner1(const T&) noexcept
{
return T(1.);
}
template <class T, uint64_t c0>
inline T horner1(const T& x) noexcept
{
return x + detail::coef<T, c0>();
}
template <class T, uint64_t c0, uint64_t c1, uint64_t... args>
inline T horner1(const T& x) noexcept
{
return fma(x, horner1<T, c1, args...>(x), detail::coef<T, c0>());
}
}
#endif
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