Macros.h

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/*
 * Copyright (C) 2009 Niek Linnenbank
 *
 * 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 __MACROS_H
#define __MACROS_H
 
#include "Types.h"
 
#define TRUE            1
 
#define FALSE           0
 
#ifndef NULL
#define NULL            (void *)0
#endif
 
#define ZERO            0
 
#define QUOTE(x) \
    #x
 
#define IQUOTE(x) \
    QUOTE(x)
 
#define KiloByte(v) ((v) * 1024)
 
#define MegaByte(v) ((v) * 1024 * 1024)
 
#define GigaByte(v) ((v) * 1024 * 1024 * 1024)
 
#define LONG_MIN -2147483647L
 
#define LONG_MAX  2147483647L
 
#define ULONG_MIN 0LU
 
#define ULONG_MAX 4294967295LU
 
#define INT_MIN -2147483647
 
#define INT_MAX  2147483647
 
#define UINT_MIN 0U
 
#define UINT_MAX 4294967295U
 
#define CEIL(number,divisor) \
    ( (number) % (divisor) ?  \
     ((number) / (divisor)) + 1 : (number) / (divisor))
 
#ifdef __cplusplus
 
inline bool isPowerOfTwo(unsigned number)
{
    return (number != 0) && ((number & (number - 1)) == 0);
}
 
inline double doubleAbsolute(double number)
{
    return number < 0 ? -number : number;
}
 
inline bool doubleEquals(double a, double b, double epsilon)
{
    return doubleAbsolute(a - b) < epsilon;
}
 
#endif /* __cplusplus */
 
#define offsetof(TYPE, MEMBER) \
    ((Size) &((TYPE *)0)->MEMBER)
 
#ifdef __cplusplus
#define C "C"
#define CPP
#else
#define C
#endif /* c_plusplus */
 
#define SECTION(s) \
    __attribute__((__section__(s)))
 
#define USED \
    __attribute__((__used__))
 
#define PACKED \
    __attribute__((__packed__))
 
#define ALIGN(n) \
    __attribute__((aligned(n)))
 
#endif /* __MACROS_H */