/* lzo_ptr.c -- low-level pointer constructs

   This file is part of the LZO real-time data compression library.

   Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer

   All Rights Reserved.

   The LZO library 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 2 of

   the License, or (at your option) any later version.

   The LZO library 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 the LZO library; see the file COPYING.

   If not, write to the Free Software Foundation, Inc.,

   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

   Markus F.X.J. Oberhumer

   <markus@oberhumer.com>

   http://www.oberhumer.com/opensource/lzo/

 */

#include "lzo_conf.h"

/***********************************************************************

//

************************************************************************/

LZO_PUBLIC(lzo_uintptr_t)

__lzo_ptr_linear(const lzo_voidp ptr)

{

    lzo_uintptr_t p;

#if (LZO_ARCH_I086)

#error "LZO_ARCH_I086 is unsupported"

#elif (LZO_MM_PVP)

#error "LZO_MM_PVP is unsupported"

#else

    p = (lzo_uintptr_t) PTR_LINEAR(ptr);

#endif

    return p;

}

/***********************************************************************

//

************************************************************************/

LZO_PUBLIC(unsigned)

__lzo_align_gap(const lzo_voidp ptr, lzo_uint size)

{

#if (__LZO_UINTPTR_T_IS_POINTER)

#error "__LZO_UINTPTR_T_IS_POINTER is unsupported"

#else

    lzo_uintptr_t p, n;

    p = __lzo_ptr_linear(ptr);

    n = (((p + size - 1) / size) * size) - p;

#endif

    assert(size > 0);

    assert((long)n >= 0);

    assert(n <= size);

    return (unsigned)n;

}

/*

vi:ts=4:et

*/