Leaked source code of windows server 2003
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/*
* A L I G N . H * * Alignment macros * * Copyright 1986-1997 Microsoft Corporation, All Rights Reserved */
#ifndef _ALIGN_H_
#define _ALIGN_H_
// Alignments ----------------------------------------------------------------
//
#undef AlignN
#undef Align2
#undef Align4
#undef Align8
#undef AlignNatural
#undef FIsAlignedCb
#undef FIsAligned
enum {
ALIGN_NONE = 0, ALIGN_WORD, ALIGN_INTEL, ALIGN_RISC, ALIGN_16BYTE, ALIGN_128BYTE = 7, ALIGN_4K = 12,#if defined (_AMD64_) || defined (_IA64_)
ALIGN_NATURAL = ALIGN_RISC#elif defined (WIN32)
ALIGN_NATURAL = ALIGN_INTEL#endif
};
#define AlignN(x,n) (((x)+(1<<(n))-1) & ~((1<<(n))-1))
#define PadN(x,n) (AlignN(x,n) - (x))
#define Align2(x) AlignN((x),ALIGN_WORD)
#define Align4(x) AlignN((x),ALIGN_INTEL)
#define Align8(x) AlignN((x),ALIGN_RISC)
#define Align16(x) AlignN((x),ALIGN_16BYTE)
#define Align128(x) AlignN((x),ALIGN_128BYTE)
#define Align4K(x) AlignN((x),ALIGN_4K)
#define AlignNatural(x) AlignN((x),ALIGN_NATURAL)
#define Pad2(x) PadN((x),ALIGN_WORD)
#define Pad4(x) PadN((x),ALIGN_INTEL)
#define Pad8(x) PadN((x),ALIGN_RISC)
#define Pad16(x) PadN((x),ALIGN_16BYTE)
#define Pad4K(x) PadN((x),ALIGN_4K)
#define FIsAlignedCb(x) (AlignNatural((ULONG_PTR)(x)) == (ULONG_PTR)(x))
#define FIsAligned(x) (FIsAlignedCb((LPVOID)(x)))
#endif // _ALIGN_H_
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