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Add macros to construct uints and get their low and hi parts.

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Yury Melnichek 2010-12-30 02:25:47 +01:00 • committed by Alex Zolotarev
parent 35a16437cd
commit af425358e3
1 changed files with 19 additions and 0 deletions
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19
base/macros.hpp
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@ -1,4 +1,5 @@
#pragma once
#include "base.hpp"
namespace my
{
@ -48,3 +49,21 @@ namespace my
#define PREDICT_TRUE(x) (x)
#define PREDICT_FALSE(x) (x)
#endif
#define UINT16_FROM_UINT8(hi, lo) ((static_cast<uint16_t>(hi) << 8) | lo)
#define UINT32_FROM_UINT16(hi, lo) ((static_cast<uint32_t>(hi) << 16) | lo)
#define UINT64_FROM_UINT32(hi, lo) ((static_cast<uint64_t>(hi) << 32) | lo)
#define UINT32_FROM_UINT8(u3, u2, u1, u0) \
UINT32_FROM_UINT16(UINT16_FROM_UINT8(u3, u2), UINT16_FROM_UINT8(u1, u0))
#define UINT64_FROM_UINT8(u7, u6, u5, u4, u3, u2, u1, u0) \
UINT64_FROM_UINT32(UINT32_FROM_UINT8(u7, u6, u5, u4), UINT32_FROM_UINT8(u3, u2, u1, u0))
#define UINT16_LO(x) (static_cast<uint8_t>(x & 0xFF))
#define UINT16_HI(x) (static_cast<uint8_t>(x >> 8))
#define UINT32_LO(x) (static_cast<uint16_t>(x & 0xFFFF))
#define UINT32_HI(x) (static_cast<uint16_t>(x >> 16))
#define UINT64_LO(x) (static_cast<uint32_t>(x & 0xFFFFFFFF))
#define UINT64_HI(x) (static_cast<uint32_t>(x >> 32))