/* ************************************************************************
 * Copyright (c) 2018 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * ************************************************************************ */

#pragma once
#ifndef UTILITY_H
#define UTILITY_H

#include "handle.h"
#include "logging.h"
#include "rocsparse.h"

#include <algorithm>
#include <fstream>
#include <string>

// Return the leftmost significant bit position
#if defined(rocsparse_ILP64)
static inline rocsparse_int rocsparse_clz(rocsparse_int n)
{
    return 64 - __builtin_clzll(n);
}
#else
static inline rocsparse_int rocsparse_clz(rocsparse_int n)
{
    return 32 - __builtin_clz(n);
}
#endif

// Return one on the device
static inline void rocsparse_one(const rocsparse_handle handle, float** one)
{
    *one = handle->sone;
}

static inline void rocsparse_one(const rocsparse_handle handle, double** one)
{
    *one = handle->done;
}

// if trace logging is turned on with
// (handle->layer_mode & rocsparse_layer_mode_log_trace) == true
// then
// log_function will call log_arguments to log function
// arguments with a comma separator
template <typename H, typename... Ts>
void log_trace(rocsparse_handle handle, H head, Ts&... xs)
{
    if(nullptr != handle)
    {
        if(handle->layer_mode & rocsparse_layer_mode_log_trace)
        {
            std::string comma_separator = ",";

            std::ostream* os = handle->log_trace_os;
            log_arguments(*os, comma_separator, head, xs...);
        }
    }
}

// if bench logging is turned on with
// (handle->layer_mode & rocsparse_layer_mode_log_bench) == true
// then
// log_bench will call log_arguments to log a string that
// can be input to the executable rocsparse-bench.
template <typename H, typename... Ts>
void log_bench(rocsparse_handle handle, H head, std::string precision, Ts&... xs)
{
    if(nullptr != handle)
    {
        if(handle->layer_mode & rocsparse_layer_mode_log_bench)
        {
            std::string space_separator = " ";

            std::ostream* os = handle->log_bench_os;
            log_arguments(*os, space_separator, head, precision, xs...);
        }
    }
}

// replaces X in string with s, d, c, z or h depending on typename T
template <typename T>
std::string replaceX(std::string input_string)
{
    if(std::is_same<T, float>::value)
    {
        std::replace(input_string.begin(), input_string.end(), 'X', 's');
    }
    else if(std::is_same<T, double>::value)
    {
        std::replace(input_string.begin(), input_string.end(), 'X', 'd');
    }
    /*
    else if(std::is_same<T, rocsparse_float_complex>::value)
    {
        std::replace(input_string.begin(), input_string.end(), 'X', 'c');
    }
    else if(std::is_same<T, rocsparse_double_complex>::value)
    {
        std::replace(input_string.begin(), input_string.end(), 'X', 'z');
    }
    else if(std::is_same<T, rocsparse_half>::value)
    {
        std::replace(input_string.begin(), input_string.end(), 'X', 'h');
    }
    */
    return input_string;
}

#endif // UTILITY_H