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BitUtil: Delta, ZigZag, NumBits, Floating Point,...

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2017-02-04 13:26:00 +01:00
parent d7822375b1
commit de61844cdb
1 changed files with 79 additions and 23 deletions
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102
bitutil.c
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@ -32,7 +32,7 @@ unsigned bit32(uint32_t *in, unsigned n) { uint32_t b; BITSIZE32(in, n, b);
unsigned bit64(uint64_t *in, unsigned n) { uint64_t b; BITSIZE_( in, n, b, 64); return b; }
//---------------- Delta ----------------------------------------
#define BITDENC(_p_,_n_, _inc_, _start_, _act_) {\
#define BITD(_p_,_n_, _inc_, _start_, _act_) {\
typeof(_p_[0]) _x, *_p;\
for(_p = _p_; _p != _p_+(_n_&~(4-1)); _p+=4) {\
_x = _p[0]-_start_-_inc_; _start_ = _p[0]; _act_;\
@ -45,7 +45,7 @@ unsigned bit64(uint64_t *in, unsigned n) { uint64_t b; BITSIZE_( in, n, b, 64);
}\
}
/*#define BITDENC(_p_,_n_, _inc_, _start_, _act_) {\
/*#define BITD(_p_,_n_, _inc_, _start_, _act_) {\
typeof(_p_[0]) _x, *_p; int i;\
for(_p = _p_+_n_, i = n&(4-1); i > 0; i--) { --_p; _p[i] -= _p[i-1]; }
while(_p != _p_) {\
@ -78,14 +78,14 @@ unsigned bitd32(uint32_t *in, unsigned n, uint32_t start) {
}
#else
typeof(in[0]) b = 0;
BITDENC(in,n, 0, start, b |= _x);
BITD(in,n, 0, start, b |= _x);
#endif
return bsr32(b);
}
unsigned bitd8( uint8_t *in, unsigned n, uint8_t start) { uint8_t b = 0; BITDENC(in, n, 0, start, b |= _x); return bsr8(b); }
unsigned bitd16(uint16_t *in, unsigned n, uint16_t start) { uint16_t b = 0; BITDENC(in, n, 0, start, b |= _x); return bsr16(b); }
unsigned bitd64(uint64_t *in, unsigned n, uint64_t start) { uint64_t b = 0; BITDENC(in, n, 0, start, b |= _x); return bsr64(b); }
unsigned bitd8( uint8_t *in, unsigned n, uint8_t start) { uint8_t b = 0; BITD(in, n, 0, start, b |= _x); return bsr8(b); }
unsigned bitd16(uint16_t *in, unsigned n, uint16_t start) { uint16_t b = 0; BITD(in, n, 0, start, b |= _x); return bsr16(b); }
unsigned bitd64(uint64_t *in, unsigned n, uint64_t start) { uint64_t b = 0; BITD(in, n, 0, start, b |= _x); return bsr64(b); }
unsigned bitdenc32(uint32_t *in, unsigned n, uint32_t *out, uint32_t start, unsigned inc) {
#ifdef __SSE2__
@ -107,14 +107,14 @@ unsigned bitdenc32(uint32_t *in, unsigned n, uint32_t *out, uint32_t start, unsi
}
#else
typeof(in[0]) b = 0,*op = out;
BITDENC(in, n, inc, start, b |= _x;*op++ = _x);
BITD(in, n, inc, start, b |= _x;*op++ = _x);
#endif
return bsr32(b);
}
unsigned bitdenc8( uint8_t *in, unsigned n, uint8_t *out, uint8_t start, unsigned inc) { uint8_t b = 0,*op = out; BITDENC(in, n, inc, start, b |= _x; *op++ = _x); return bsr8(b);}
unsigned bitdenc16(uint16_t *in, unsigned n, uint16_t *out, uint16_t start, unsigned inc) { uint16_t b = 0,*op = out; BITDENC(in, n, inc, start, b |= _x; *op++ = _x); return bsr16(b);}
unsigned bitdenc64(uint64_t *in, unsigned n, uint64_t *out, uint64_t start, unsigned inc) { uint64_t b = 0,*op = out; BITDENC(in, n, inc, start, b |= _x; *op++ = _x); return bsr64(b);}
unsigned bitdenc8( uint8_t *in, unsigned n, uint8_t *out, uint8_t start, unsigned inc) { uint8_t b = 0,*op = out; BITD(in, n, inc, start, b |= _x; *op++ = _x); return bsr8(b);}
unsigned bitdenc16(uint16_t *in, unsigned n, uint16_t *out, uint16_t start, unsigned inc) { uint16_t b = 0,*op = out; BITD(in, n, inc, start, b |= _x; *op++ = _x); return bsr16(b);}
unsigned bitdenc64(uint64_t *in, unsigned n, uint64_t *out, uint64_t start, unsigned inc) { uint64_t b = 0,*op = out; BITD(in, n, inc, start, b |= _x; *op++ = _x); return bsr64(b);}
unsigned bitd132(uint32_t *in, unsigned n, uint32_t start) {
#ifdef __SSE2__
@ -134,14 +134,14 @@ unsigned bitd132(uint32_t *in, unsigned n, uint32_t start) {
}
#else
uint32_t b = 0;
BITDENC(in, n, 1, start, b |= _x);
BITD(in, n, 1, start, b |= _x);
#endif
return bsr32(b);
}
unsigned bitd18( uint8_t *in, unsigned n, uint8_t start) { uint8_t b = 0; BITDENC(in, n, 1, start, b |= _x); return bsr8(b); }
unsigned bitd116(uint16_t *in, unsigned n, uint16_t start) { uint16_t b = 0; BITDENC(in, n, 1, start, b |= _x); return bsr16(b); }
unsigned bitd164(uint64_t *in, unsigned n, uint64_t start) { uint64_t b = 0; BITDENC(in, n, 1, start, b |= _x); return bsr64(b); }
unsigned bitd18( uint8_t *in, unsigned n, uint8_t start) { uint8_t b = 0; BITD(in, n, 1, start, b |= _x); return bsr8(b); }
unsigned bitd116(uint16_t *in, unsigned n, uint16_t start) { uint16_t b = 0; BITD(in, n, 1, start, b |= _x); return bsr16(b); }
unsigned bitd164(uint64_t *in, unsigned n, uint64_t start) { uint64_t b = 0; BITD(in, n, 1, start, b |= _x); return bsr64(b); }
// -- undelta: in-place prefix sum ---------------
#define BITDDEC(_p_, _n_, _start_, _inc_) {\
@ -189,6 +189,48 @@ void bitddecn16(uint16_t *p, unsigned n, uint16_t start, uint16_t inc) { BITDDEC
void bitddecn32(uint32_t *p, unsigned n, uint32_t start, uint32_t inc) { BITDDEC(p, n, start, inc); }
void bitddecn64(uint64_t *p, unsigned n, uint64_t start, uint64_t inc) { BITDDEC(p, n, start, inc); }
#define BITDI(_p_,_n_, _start_, _inc_) {\
typeof(_p_[0]) _x, *_p; _inc_= (uint32_t)(-1);\
for(_p = _p_; _p != _p_+(_n_&~(4-1)); _p+=4) {\
_x = _p[0]-_start_; _start_ = _p[0]; if(_x<_inc_) _inc_=_x;\
_x = _p[1]-_start_; _start_ = _p[1]; if(_x<_inc_) _inc_=_x;\
_x = _p[2]-_start_; _start_ = _p[2]; if(_x<_inc_) _inc_=_x;\
_x = _p[3]-_start_; _start_ = _p[3]; if(_x<_inc_) _inc_=_x;\
}\
for(;_p != _p_+_n_;_p++) {\
_x = _p[0]-_start_; _start_ = _p[0]; if(_x<_inc_) _inc_=_x;\
}\
}
#define BITDIE(_p_,_n_, _start_, _inc_, _act_) {\
typeof(_p_[0]) _x, *_p;\
for(_p = _p_; _p != _p_+(_n_&~(4-1)); _p+=4) {\
_x = _p[0]-_start_-_inc_; _start_ = _p[0]; _act_; \
_x = _p[1]-_start_-_inc_; _start_ = _p[1]; _act_;\
_x = _p[2]-_start_-_inc_; _start_ = _p[2]; _act_;\
_x = _p[3]-_start_-_inc_; _start_ = _p[3]; _act_;\
}\
for(;_p != _p_+_n_;_p++) {\
_x = _p[0]-_start_-_inc_; _start_ = _p[0]; _act_;\
}\
}
uint8_t bitdi8( uint8_t *in, unsigned n, uint8_t start) { uint8_t i; BITDI(in, n, start, i); return i; }
uint16_t bitdi16(uint16_t *in, unsigned n, uint16_t start) { uint16_t i; BITDI(in, n, start, i); return i; }
uint32_t bitdi32(uint32_t *in, unsigned n, uint32_t start) { uint32_t i; BITDI(in, n, start, i); return i; }
uint64_t bitdi64(uint64_t *in, unsigned n, uint64_t start) { uint64_t i; BITDI(in, n, start, i); return i; }
unsigned bitdienc8( uint8_t *in, unsigned n, uint8_t *out, uint8_t start, unsigned inc) { uint8_t b = 0,*op = out; BITDIE(in, n, start, inc, b |= _x; *op++ = _x); return bsr8(b); }
unsigned bitdienc16(uint16_t *in, unsigned n, uint16_t *out, uint16_t start, unsigned inc) { uint16_t b = 0,*op = out; BITDIE(in, n, start, inc, b |= _x; *op++ = _x); return bsr16(b);}
unsigned bitdienc32(uint32_t *in, unsigned n, uint32_t *out, uint32_t start, unsigned inc) { uint32_t b = 0,*op = out; BITDIE(in, n, start, inc, b |= _x; *op++ = _x); return bsr32(b);}
unsigned bitdienc64(uint64_t *in, unsigned n, uint64_t *out, uint64_t start, unsigned inc) { uint64_t b = 0,*op = out; BITDIE(in, n, start, inc, b |= _x; *op++ = _x); return bsr64(b);}
void bitdidec8( uint8_t *p, unsigned n, uint8_t start, uint8_t inc) { BITDDEC(p, n, start, inc); }
void bitdidec16( uint16_t *p, unsigned n, uint16_t start, uint16_t inc) { BITDDEC(p, n, start, inc); }
void bitdidec32( uint32_t *p, unsigned n, uint32_t start, uint32_t inc) { BITDDEC(p, n, start, inc); }
void bitdidec64( uint64_t *p, unsigned n, uint64_t start, uint64_t inc) { BITDDEC(p, n, start, inc); }
//------------------- For ------------------------------
unsigned bitf32( uint32_t *in, unsigned n, uint32_t start) { return n?bsr32(in[n-1] - start ):0; }
unsigned bitf132( uint32_t *in, unsigned n, uint32_t start) { return n?bsr32(in[n-1] - start - n):0; }
@ -282,7 +324,21 @@ unsigned bitzenc32(unsigned *in, unsigned n, unsigned *out, unsigned start, uint
}
void bitzdec32(unsigned *p, unsigned n, unsigned start) {
#ifdef __SSE2__
#ifdef __AVX2__
__m256i sv = _mm256_set1_epi32(start), zv = _mm256_setzero_si256(); //, c1 = _mm_set1_epi32(1), cz = _mm_setzero_si128();
unsigned *ip;
for(ip = p; ip != p+(n&~(8-1)); ip += 8) {
__m256i iv = _mm256_loadu_si256((__m256i *)ip);
iv = UNZIGZAG256x32(iv);
SCAN256x32(iv, sv);
_mm256_storeu_si256((__m256i *)ip, sv);
}
start = (unsigned)_mm256_extract_epi32(_mm256_srli_si256(sv,12), 0);
while(ip != p+n) {
unsigned z = *ip;
*ip++ = (start += (z >> 1 ^ -(z & 1)));
}
#elif defined(__SSE2__)
__m128i sv = _mm_set1_epi32(start); //, c1 = _mm_set1_epi32(1), cz = _mm_setzero_si128();
unsigned *ip;
for(ip = p; ip != p+(n&~(4-1)); ip += 4) {
@ -310,16 +366,16 @@ void bitzdec16(uint16_t *p, unsigned n, uint16_t start) { BITZDEC(p, n, start);
void bitzdec64(uint64_t *p, unsigned n, uint64_t start) { BITZDEC(p, n, start); }
//-------------- For --------------------------
#define BITFM(_p_,_n_, __mi, __mx) {\
typeof(_p_[0]) _x, *_p;\
for(_p = _p_, __mi = __mx = 0; _p != _p_+(_n_&~(4-1)); ) {\
if(*_p < __mi) __mi = *_p; if(*_p > __mx) __mx = *_p; _p++; \
if(*_p < __mi) __mi = *_p; if(*_p > __mx) __mx = *_p; _p++; \
if(*_p < __mi) __mi = *_p; if(*_p > __mx) __mx = *_p; _p++; \
if(*_p < __mi) __mi = *_p; if(*_p > __mx) __mx = *_p; _p++; \
#define BITFM(_p_,_n_, _mi_, _mx_) {\
typeof(_p_[0]) *_p; \
for(_p = _p_, _mi_ = _mx_ = *_p; _p != _p_+(_n_&~(4-1)); ) {\
if(*_p < _mi_) _mi_ = *_p; if(*_p > _mx_) _mx_ = *_p; _p++; \
if(*_p < _mi_) _mi_ = *_p; if(*_p > _mx_) _mx_ = *_p; _p++; \
if(*_p < _mi_) _mi_ = *_p; if(*_p > _mx_) _mx_ = *_p; _p++; \
if(*_p < _mi_) _mi_ = *_p; if(*_p > _mx_) _mx_ = *_p; _p++; \
}\
while(_p != _p_+_n_) { \
if(*_p < __mi) __mi = *_p; if(*_p > __mx) __mx = *_p; _p++; \
if(*_p < _mi_) _mi_ = *_p; if(*_p > _mx_) _mx_ = *_p; _p++; \
}\
}