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TurboPFor: Variable byte c/c++ header

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2017-02-26 14:22:11 +01:00
parent fa642ee4de
commit eb7c4619bc
1 changed files with 16 additions and 3 deletions
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17
vint.h
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@ -118,10 +118,23 @@ extern unsigned char _vtab32_[];
else { unsigned _b = _x_-VB_BA3; _x_ = ctou32(_ip_) & ((1u << 8 * _b << 24) - 1); _ip_ += 3 + _b; _act_;}\
} while(0)
#define _vblen64(_x_) _vblen32(_x_)
#define _vbvlen64(_x_) _vbvlen32(_x_)
#define _vbput64(_op_, _x_, _act_) _vbput32(_op_, _x_, _act_)
#define _vbget64(_ip_, _x_, _act_) _vbget32(_ip_, _x_, _act_)
#define _vbput64(_op_, _x_, _act_) {\
if(likely((_x_) < VB_OFS1)){ *_op_++ = (_x_); _act_;}\
else if ((_x_) < VB_OFS2) { ctou16(_op_) = bswap16((VB_OFS1<<8)+((_x_)-VB_OFS1)); _op_ += 2; /*(_x_) -= VB_OFS1; *_op_++ = VB_OFS1 + ((_x_) >> 8); *_op_++ = (_x_);*/ _act_; }\
else if ((_x_) < VB_OFS3) { *_op_++ = VB_BA2 + (((_x_) -= VB_OFS2) >> 16); ctou16(_op_) = (_x_); _op_ += 2; _act_;}\
else { unsigned _b = (bsr64((_x_))+7)/8; *_op_++ = VB_BA3 + (_b - 3); ctou64(_op_) = (_x_); _op_ += _b; _act_;}\
}
#define _vbget64(_ip_, _x_, _act_) do { _x_ = *_ip_++;\
if(likely(_x_ < VB_OFS1)) { _act_ ;}\
else if(likely(_x_ < VB_BA2)) { _x_ = /*bswap16(ctou16(_ip_-1))*/ ((_x_<<8) + (*_ip_)) + (VB_OFS1 - (VB_OFS1 << 8)); _ip_++; _act_;} \
else if(likely(_x_ < VB_BA3)) { _x_ = ctou16(_ip_) + ((_x_ - VB_BA2 ) << 16) + VB_OFS2; _ip_ += 2; _act_;}\
else { unsigned _b = _x_-VB_BA3; _x_ = ctou64(_ip_) & ((1ull << 8 * _b << 24) - 1); _ip_ += 3 + _b; _act_;}\
} while(0)
#ifdef _WIN32
//#define fgetc_unlocked(_f_) _fgetc_nolock(_f_)