Quelle  xsimd_sse4_2.hpp   Sprache: C

/***************************************************************************
 * Copyright (c) Johan Mabille, Sylvain Corlay, Wolf Vollprecht and         *
 * Martin Renou                                                             *
 * Copyright (c) QuantStack                                                 *
 * Copyright (c) Serge Guelton                                              *
 *                                                                          *
 * Distributed under the terms of the BSD 3-Clause License.                 *
 *                                                                          *
 * The full license is in the file LICENSE, distributed with this software. *
 ****************************************************************************/

#ifndef XSIMD_SSE4_2_HPP
#define XSIMD_SSE4_2_HPP

#include <limits>

#include "../types/xsimd_sse4_2_register.hpp"

namespace xsimd
{

    namespace kernel
    {
        using namespace types;

        // lt
        template <class A>
        XSIMD_INLINE batch_bool<int64_t, A> lt(batch<int64_t, A> const& self, batch<int64_t, A> const& other, requires_arch<sse4_2>) noexcept
        {
            return _mm_cmpgt_epi64(other, self);
        }
        template <class A>
        XSIMD_INLINE batch_bool<uint64_t, A> lt(batch<uint64_t, A> const& self, batch<uint64_t, A> const& other, requires_arch<sse4_2>) noexcept
        {
            auto xself = _mm_xor_si128(self, _mm_set1_epi64x(std::numeric_limits<int64_t>::lowest()));
            auto xother = _mm_xor_si128(other, _mm_set1_epi64x(std::numeric_limits<int64_t>::lowest()));
            return _mm_cmpgt_epi64(xother, xself);
        }

    }

}

#endif