scalar_div.hpp

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//=======================================================================
// Copyright (c) 2014-2023 Baptiste Wicht
// Distributed under the terms of the MIT License.
// (See accompanying file LICENSE or copy at
//  http://opensource.org/licenses/MIT)
//=======================================================================

#pragma once

#ifdef ETL_EGBLAS_MODE

#include "etl/impl/cublas/cuda.hpp"

#include <egblas.hpp>

#endif

namespace etl::impl::egblas {

#ifdef EGBLAS_HAS_SCALAR_SDIV

static constexpr bool has_scalar_sdiv = true;

inline void scalar_div(float beta, float* x, size_t n, size_t s) {
    inc_counter("egblas");
    egblas_scalar_sdiv(beta, x, n, s);
}

#else

static constexpr bool has_scalar_sdiv = false;

#endif

#ifdef EGBLAS_HAS_SCALAR_DDIV

static constexpr bool has_scalar_ddiv = true;

inline void scalar_div(double beta, double* x, size_t n, size_t s) {
    inc_counter("egblas");
    egblas_scalar_ddiv(beta, x, n, s);
}

#else

static constexpr bool has_scalar_ddiv = false;

#endif

#ifdef EGBLAS_HAS_SCALAR_CDIV

static constexpr bool has_scalar_cdiv = true;

inline void scalar_div(std::complex<float> beta, std::complex<float>* x, size_t n, size_t s) {
    inc_counter("egblas");
    egblas_scalar_cdiv(complex_cast(beta), reinterpret_cast<cuComplex*>(x), n, s);
}

inline void scalar_div(etl::complex<float> beta, etl::complex<float>* x, size_t n, size_t s) {
    inc_counter("egblas");
    egblas_scalar_cdiv(complex_cast(beta), reinterpret_cast<cuComplex*>(x), n, s);
}

#else

static constexpr bool has_scalar_cdiv = false;

#endif

#ifdef EGBLAS_HAS_SCALAR_ZDIV

static constexpr bool has_scalar_zdiv = true;

inline void scalar_div(std::complex<double> beta, std::complex<double>* x, size_t n, size_t s) {
    inc_counter("egblas");
    egblas_scalar_zdiv(complex_cast(beta), reinterpret_cast<cuDoubleComplex*>(x), n, s);
}

inline void scalar_div(etl::complex<double> beta, etl::complex<double>* x, size_t n, size_t s) {
    inc_counter("egblas");
    egblas_scalar_zdiv(complex_cast(beta), reinterpret_cast<cuDoubleComplex*>(x), n, s);
}

#else

static constexpr bool has_scalar_zdiv = false;

#endif

#ifndef ETL_EGBLAS_MODE

template <typename T>
inline void scalar_div([[maybe_unused]] T beta, [[maybe_unused]] T* x, [[maybe_unused]] size_t n, [[maybe_unused]] size_t s) {
    cpp_unreachable("Invalid call to egblas::scalar_div");
}

#endif

} //end of namespace etl::impl::egblas