daiduo/TurboPFor-Integer-Compression
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TurboPFor: Floating Point/Integer encode/decode

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2018-03-09 17:57:52 +01:00
parent c6a6916aff
commit d2147eaff2
1 changed files with 4 additions and 5 deletions
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9
fp.c Normal file → Executable file
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@ -46,7 +46,6 @@
#define _bzhi_u32(_u_, _b_) ((_u_) & ((1u <<(_b_))-1))
#endif
#define bitpeek32( _bw_,_br_,_nb_) _bzhi_u32(_bw_>>_br_, _nb_)
#define bitpeek64( _bw_,_br_,_nb_) _bzhi_u64(_bw_>>_br_, _nb_)
#define bitpeek( _bw_,_br_) (_bw_>>_br_)
#define bitrmv( _bw_,_br_,_nb_) _br_ += _nb_
@ -64,7 +63,7 @@
#define bitget16(bw,br,_b_,_x_,_ip_) bitget(bw,br,_b_,_x_)
#define bitget32(bw,br,_b_,_x_,_ip_) bitget(bw,br,_b_,_x_)
#define bitget64(bw,br,_b_,_x_,_ip_) if((_b_)>45) { unsigned _v; bitget(bw,br,(_b_)-32,_x_); bitdnorm(bw,br,_ip_); bitget(bw,br,32,_v); _x_ = _x_<<32|_v; } else bitget(bw,br,_b_,_x_)
//-------------------------------
#define VSIZE 128
@ -290,7 +289,7 @@ size_t TEMPLATE2(fpgenc,USIZE)(uint_t *in, size_t n, unsigned char *out, uint_t
if(start) { ol = TEMPLATE2(clz,USIZE)(start); ot = TEMPLATE2(ctz,USIZE)(start); }
#define FE(i,_usize_) { TEMPLATE3(uint, _usize_, _t) z = XENC(ip[i], start,_usize_); start = ip[i];\
if(likely(!z)) bitput( bw,br, 1, 1);\
if(likely(!z)) bitput( bw,br, 1, 1);\
else { unsigned t = TEMPLATE2(ctz,_usize_)(z), l = TEMPLATE2(clz,_usize_)(z); /*l = l>31?31:l;*/\
unsigned s = _usize_ - l - t, os = _usize_ - ol - ot;\
if(l >= ol && t >= ot && os < 6+5+s) { bitput( bw,br, 2, 2); z>>=ot; TEMPLATE2(bitput,_usize_)(bw,br, os, z,op); }\
@ -298,7 +297,7 @@ size_t TEMPLATE2(fpgenc,USIZE)(uint_t *in, size_t n, unsigned char *out, uint_t
} bitenorm(bw,br,op);\
}
for(ip = in; ip != in + (n&~(4-1)); ip+=4) { __builtin_prefetch(ip+512, 0); FE(0,USIZE); FE(1,USIZE); FE(2,USIZE); FE(3,USIZE); }
for( ; ip != in + n ; ip++ ) FE(0,USIZE);
for( ; ip != in + n ; ip++) FE(0,USIZE);
bitflush(bw,br,op);
return op - out;
}
@ -521,4 +520,4 @@ size_t TEMPLATE2(bvzdec,USIZE)(unsigned char *in, size_t n, uint_t *out, uint_t
}
#undef USIZE
#endif