diff options
Diffstat (limited to 'gsimm.c')
| -rw-r--r-- | gsimm.c | 29 |
1 files changed, 0 insertions, 29 deletions
@@ -1,4 +1,3 @@ -#include <string.h> #include "rabinpoly.h" #include "gsimm.h" @@ -33,29 +32,6 @@ static void freq_to_md(u_char *md, int *freq) bzero (freq, sizeof(freq[0]) * MD_BITS); } -static int dist (u_char *l, u_char *r) -{ int j, k; - int d = 0; - - for (j = 0; j < MD_LENGTH; j++) - { u_char ch = l[j] ^ r[j]; - - for (k = 0; k < 8; k++) d += ((ch & (1<<k)) > 0); - } - - return d; -} - -double gb_simm_score(u_char *l, u_char *r) -{ - int d = dist(l, r); - double sim = (double) (d) / (MD_LENGTH * 4 - 1); - if (1.0 < sim) - return 0; - else - return 1.0 - sim; -} - void gb_simm_process(u_char *data, unsigned len, u_char *md) { size_t j = 0; u_int32_t ofs; @@ -63,11 +39,6 @@ void gb_simm_process(u_char *data, unsigned len, u_char *md) u_int32_t count [MD_BITS * (GROUP_COUNTERS/GROUP_BITS)]; int freq[MD_BITS]; - if (len < GB_SIMM_MIN_FILE_SIZE || GB_SIMM_MAX_FILE_SIZE < len) { - memset(md, 0, MD_LENGTH); - return; - } - bzero (freq, sizeof(freq[0]) * MD_BITS); bzero (dup_cache, DUP_CACHE_SIZE * sizeof (u_int32_t)); bzero (count, (MD_BITS * (GROUP_COUNTERS/GROUP_BITS) * sizeof (u_int32_t))); |