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git-svn-id: file:///svn/tokudb@5358 c7de825b-a66e-492c-adef-691d508d4ae1
This commit is contained in:
Bradley C. Kuszmaul 2008-07-27 18:28:38 +00:00
parent e94d156afe
commit 8640836ef3
1 changed files with 32 additions and 1 deletions
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33
newbrt/hash-benchmarks/hash-benchmark.c
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@ -887,10 +887,41 @@ void l1764_init(struct l1764 *l) {
l->input=0; l->input=0;
l->n_input_bytes=0; l->n_input_bytes=0;
} }
void l1764_add (struct l1764 *l, const void *vbuf, int len) { inline void l1764_add (struct l1764 *l, const void *vbuf, int len) {
if (PRINT) printf("%d: n_input_bytes=%d len=%d\n", __LINE__, l->n_input_bytes, len); if (PRINT) printf("%d: n_input_bytes=%d len=%d\n", __LINE__, l->n_input_bytes, len);
int n_input_bytes = l->n_input_bytes; int n_input_bytes = l->n_input_bytes;
const unsigned char *cbuf = vbuf; const unsigned char *cbuf = vbuf;
// Special case short inputs
if (len==1) {
u_int64_t input = l->input | ((u_int64_t)(*cbuf))<<(8*n_input_bytes);
n_input_bytes++;
if (n_input_bytes==8) {
l->sum = l->sum*17 + input;
l->n_input_bytes = 0;
l->input = 0;
} else {
l->input = input;
l->n_input_bytes = n_input_bytes;
}
return;
} else if (len==2) {
u_int64_t input = l->input;
u_int64_t thisv = ((u_int64_t)(*(u_int16_t*)cbuf));
if (n_input_bytes==7) {
l->sum = l->sum*17 + (input | (thisv<<(8*7)));
l->input = thisv>>8;
l->n_input_bytes = 1;
} else if (n_input_bytes==6) {
l->sum = l->sum*17 + (input | (thisv<<(8*6)));
l->input = 0;
l->n_input_bytes = 0;
} else {
l->input = input | (thisv<<(8*n_input_bytes));
l->n_input_bytes += 2;
}
return;
}
u_int64_t sum; u_int64_t sum;
//assert(len>=0); //assert(len>=0);
if (n_input_bytes) { if (n_input_bytes) {