diff options
Diffstat (limited to 'myisam/ftdefs.h')
| -rw-r--r-- | myisam/ftdefs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/myisam/ftdefs.h b/myisam/ftdefs.h index 22a81ca4f9c..592b60a0133 100644 --- a/myisam/ftdefs.h +++ b/myisam/ftdefs.h @@ -78,7 +78,7 @@ extern ulong collstat; /* Mysterious, but w/o (double) GWS_IDF performs better :-o */ #define GWS_IDF log(aio->info->state->records/doc_cnt) #define GWS_IDF1 log((double)aio->info->state->records/doc_cnt) -#define GWS_PROB log(((double)(aio->info->state->records-doc_cnt))/doc_cnt) +#define GWS_PROB ((aio->info->state->records > doc_cnt) ? log(((double)(aio->info->state->records-doc_cnt))/doc_cnt) : 0 ) #define GWS_FREQ (1.0/doc_cnt) #define GWS_SQUARED pow(log((double)aio->info->state->records/doc_cnt),2) #define GWS_CUBIC pow(log((double)aio->info->state->records/doc_cnt),3) |