byte_dword.h

#ifndef BYTE_DWORD
#define BYTE_DWORD

/*  Copyright 2007,2009 Alain Knaff.
 *  This file is part of mtools.
 *
 *  Mtools 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.
 *
 *  Mtools 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 Mtools.  If not, see <http://www.gnu.org/licenses/>.
 */

static Dword byte2dword(Byte* val)
{
	Dword l;
	l = (Dword)((val[0] << 24) + (val[1] << 16) + (val[2] << 8) + val[3]);

	return l;
}

UNUSED(static int32_t byte2sdword(Byte* val))
{
	int32_t l;
	l = (int32_t)((val[0] << 24) + (val[1] << 16) + (val[2] << 8) + val[3]);

	return l;
}


UNUSED(static Qword byte2qword(Byte* val))
{
	Qword l;
	l = val[0];
	l = (l << 8) | val[1];
	l = (l << 8) | val[2];
	l = (l << 8) | val[3];
	l = (l << 8) | val[4];
	l = (l << 8) | val[5];
	l = (l << 8) | val[6];
	l = (l << 8) | val[7];
	return l;
}

static void dword2byte(Dword parm, Byte* rval)
{
	rval[0] = (parm >> 24) & 0xff;
	rval[1] = (parm >> 16) & 0xff;
	rval[2] = (parm >> 8)  & 0xff;
	rval[3] = parm         & 0xff;
}

UNUSED(static void sdword2byte(int32_t parm, Byte* rval))
{
	rval[0] = (parm >> 24) & 0xff;
	rval[1] = (parm >> 16) & 0xff;
	rval[2] = (parm >> 8)  & 0xff;
	rval[3] = parm         & 0xff;
}

UNUSED(static void qword2byte(Qword parm, Byte* rval))
{
	rval[0] = (parm >> 56) & 0xff;
	rval[1] = (parm >> 48) & 0xff;
	rval[2] = (parm >> 40)  & 0xff;
	rval[3] = (parm >> 32)  & 0xff;
	rval[4] = (parm >> 24) & 0xff;
	rval[5] = (parm >> 16) & 0xff;
	rval[6] = (parm >> 8)  & 0xff;
	rval[7] = parm         & 0xff;
}

#endif