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bitutil: delta, zigzag, numbits,...

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powturbo
2015-06-11 20:35:24 +02:00
parent 9f308c5554
commit 6f9812b5ee
1 changed files with 7 additions and 0 deletions
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7
bitutil.c
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@ -68,6 +68,11 @@ unsigned bitdelta32(unsigned *in, unsigned n, unsigned *out, unsigned start, uns
return bsr32(b);
}
unsigned bitdelta64(uint64_t *in, unsigned n, uint64_t *out, uint64_t start, unsigned inc) {
typeof(in[0]) b = 0,*op = out; DELTA(in, n, inc, start, b |= _x; *op++ = _x);
return bsr64(b);
}
unsigned bitd32(unsigned *in, unsigned n, unsigned start) {
#ifdef __SSE2__
unsigned *ip,b; __m128i bv = _mm_setzero_si128(), sv = _mm_set1_epi32(start);
@ -113,6 +118,7 @@ unsigned bitd132(unsigned *in, unsigned n, unsigned start) {
}
void bitund32( unsigned *p, unsigned n, unsigned x) { UNDELTA(p, n, x, 0); }
void bitund64( uint64_t *p, unsigned n, uint64_t x) { UNDELTA(p, n, x, 0); }
void bitund132(unsigned *p, unsigned n, unsigned x) {
#ifdef __SSE2__
@ -135,3 +141,4 @@ void bitund132(unsigned *p, unsigned n, unsigned x) {
}
void bitundx32(unsigned *p, unsigned n, unsigned x, unsigned inc) { UNDELTA(p, n, x, inc); }
void bitundx64(uint64_t *p, unsigned n, uint64_t x, unsigned inc) { UNDELTA(p, n, x, inc); }