/* ************************************************************************
 * Copyright 2016-2019 Advanced Micro Devices, Inc.
 * ************************************************************************ */
#include "rocblas_axpy.hpp"
#include "logging.h"

namespace
{

    template <typename>
    constexpr char rocblas_axpy_name[] = "unknown";
    template <>
    constexpr char rocblas_axpy_name<float>[] = "rocblas_saxpy";
    template <>
    constexpr char rocblas_axpy_name<double>[] = "rocblas_daxpy";
    template <>
    constexpr char rocblas_axpy_name<rocblas_half>[] = "rocblas_haxpy";
    template <>
    constexpr char rocblas_axpy_name<rocblas_float_complex>[] = "rocblas_caxpy";
    template <>
    constexpr char rocblas_axpy_name<rocblas_double_complex>[] = "rocblas_zaxpy";

    template <int NB, typename T>
    rocblas_status rocblas_axpy_impl(rocblas_handle handle,
                                     rocblas_int    n,
                                     const T*       alpha,
                                     const T*       x,
                                     rocblas_int    incx,
                                     T*             y,
                                     rocblas_int    incy,
                                     const char*    name,
                                     const char*    bench_name)
    {
        if(!handle)
        {
            return rocblas_status_invalid_handle;
        }

        RETURN_ZERO_DEVICE_MEMORY_SIZE_IF_QUERIED(handle);

        if(!alpha)
        {
            return rocblas_status_invalid_pointer;
        }

        auto layer_mode = handle->layer_mode;
        if(handle->pointer_mode == rocblas_pointer_mode_host)
        {
            if(layer_mode & rocblas_layer_mode_log_trace)
            {
                log_trace(handle, name, n, log_trace_scalar_value(alpha), x, incx, y, incy);
            }

            if(layer_mode & rocblas_layer_mode_log_bench)
            {

                log_bench(handle,
                          "./rocblas-bench",
                          "-f",
                          bench_name,
                          "-r",
                          rocblas_precision_string<T>,
                          "-n",
                          n,
                          LOG_BENCH_SCALAR_VALUE(alpha),
                          "--incx",
                          incx,
                          "--incy",
                          incy);
            }
        }
        else if(layer_mode & rocblas_layer_mode_log_trace)
        {
            log_trace(handle, name, n, alpha, x, incx, y, incy);
        }

        if(layer_mode & rocblas_layer_mode_log_profile)
        {
            log_profile(handle, name, "N", n, "incx", incx, "incy", incy);
        }

        if(!x || !y)
        {
            return rocblas_status_invalid_pointer;
        }

        if(n <= 0) // Quick return if possible. Not Argument error
        {
            return rocblas_status_success;
        }

        return rocblas_axpy_template<NB>(handle, n, alpha, x, incx, y, incy);
    }

}

/*
 * ===========================================================================
 *    C wrapper
 * ===========================================================================
 */

extern "C" {

#ifdef IMPL
#error IMPL ALREADY DEFINED
#endif

#define IMPL(routine_name_, T_)                                                                    \
    rocblas_status routine_name_(rocblas_handle handle,                                            \
                                 rocblas_int    n,                                                 \
                                 const T_*      alpha,                                             \
                                 const T_*      x,                                                 \
                                 rocblas_int    incx,                                              \
                                 T_*            y,                                                 \
                                 rocblas_int    incy)                                              \
    {                                                                                              \
        return rocblas_axpy_impl<256>(handle, n, alpha, x, incx, y, incy, #routine_name_, "axpy"); \
    }

IMPL(rocblas_saxpy, float);
IMPL(rocblas_daxpy, double);
IMPL(rocblas_caxpy, rocblas_float_complex);
IMPL(rocblas_zaxpy, rocblas_double_complex);
IMPL(rocblas_haxpy, rocblas_half);

#undef IMPL

} // extern "C"