//----------------------------------------------------------------------------//
//                                OS on Kaleid                                 //
//                                                                            //
//  Desc:       Convertion utilities - atoi() family                          //
//                                                                            //
//                                                                            //
//  Copyright © 2018-2020 The OS/K Team                                       //
//                                                                            //
//  This file is part of OS/K.                                                //
//                                                                            //
//  OS/K is free software: you can redistribute it and/or modify              //
//  it under the terms of the GNU General Public License as published by      //
//  the Free Software Foundation, either version 3 of the License, or         //
//  any later version.                                                        //
//                                                                            //
//  OS/K is distributed in the hope that it will be useful,                   //
//  but WITHOUT ANY WARRANTY//without even the implied warranty of            //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
//  GNU General Public License for more details.                              //
//                                                                            //
//  You should have received a copy of the GNU General Public License         //
//  along with OS/K.  If not, see <https://www.gnu.org/licenses/>.            //
//----------------------------------------------------------------------------//

#include <libc.h>

//
// int atoi(const char *str)
//
// Equivalent to strtol(str, NULL, 0)
//

// String to integer
// Do not change errno
#define _ATOI_IMPL(_Name, _Type, _Func)             \
    _Type _Name(const char *str) {                  \
        error_t old; geterrno(old);                 \
        _Type ret = (_Type)_Func(str, NULL, 0);     \
        seterrno(old);                              \
        return ret;                                 \
    }

#if defined(_NEED_ATOI)
_ATOI_IMPL(atoi, int, strtol)
#elif defined(_NEED_ATOL)
_ATOI_IMPL(atol, long, strtol)
#elif defined(_NEED_ATOU)
_ATOI_IMPL(atou, uint, strtoul)
#elif defined(_NEED_ATOUL)
_ATOI_IMPL(atoul, ulong, strtoul)
#else
#error "What am I supposed to declare?"
#endif