path: root/src/libmdsserver/macro-bits.h

/**
 * mds — A micro-display server
 * Copyright © 2014  Mattias Andrée (maandree@member.fsf.org)
 * 
 * This program 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
 * (at your option) any later version.
 * 
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef MDS_LIBMDSSERVER_MACRO_BITS_H
#define MDS_LIBMDSSERVER_MACRO_BITS_H


#include <stdint.h>
#include <stddef.h>


#ifndef __WORDSIZE
# if defined(__x86_64__) && !defined(__ILP32__)
#  define __WORDSIZE  64
# else
#  define __WORDSIZE  32
# endif
#endif


/**
 * Convert the beginning of a `const char*` to a `size_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
#define atoz(str)    ((size_t)atol(str))

/**
 * Convert the beginning of a `const char*` to an `ssize_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
#define atosz(str)   ((ssize_t)atol(str))

/**
 * Convert the beginning of a `const char*` to a `short int`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
#define atoh(str)    ((short)atol(str))

/**
 * Convert the beginning of a `const char*` to an `unsigned short int`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
#define atouh(str)   ((unsigned short)atol(str))

/**
 * Convert the beginning of a `const char*` to an `unsigned int`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
#define atou(str)    ((unsigned int)atoi(str))

/**
 * Convert the beginning of a `const char*` to an `unsigned long int`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
#define atoul(str)   ((unsigned long)atol(str))

/**
 * Convert the beginning of a `const char*` to an `unsigned long long int`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
#define atoull(str)  ((unsigned long long)atoll(str))

#if __WORDSIZE == 64
/**
 * Convert the beginning of a `const char*` to an `int32_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define ato32(str)   ((int32_t)atoi(str))

/**
 * Convert the beginning of a `const char*` to an `uint32_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define atou32(str)  ((uint32_t)atou(str))

/**
 * Convert the beginning of a `const char*` to an `int64_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define ato64(str)   ((int64_t)atol(str))

/**
 * Convert the beginning of a `const char*` to an `uint64_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define atou64(str)  ((uint64_t)atoul(str))
#else
/**
 * Convert the beginning of a `const char*` to an `int32_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define ato32(str)   ((int32_t)atol(str))

/**
 * Convert the beginning of a `const char*` to an `uint32_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define atou32(str)  ((uint32_t)atoul(str))

/**
 * Convert the beginning of a `const char*` to an `int64_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define ato64(str)   ((int64_t)atoll(str))

/**
 * Convert the beginning of a `const char*` to an `uint64_t`
 * 
 * @param   str:const char*  The string that begins with an integer
 * @return                   The integer at the beginning of the string
 */
# define atou64(str)  ((uint64_t)atoull(str))
#endif


#endif