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-rw-r--r--myisam/ftdefs.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/myisam/ftdefs.h b/myisam/ftdefs.h
index ebf99e84d5a..d9b4ff6b44d 100644
--- a/myisam/ftdefs.h
+++ b/myisam/ftdefs.h
@@ -45,7 +45,7 @@
#define LWS_TF (count)
#define LWS_BINARY (count>0)
#define LWS_SQUARE (count*count)
-#define LWS_LOG (count?(log(count)+1):0)
+#define LWS_LOG (count?(log( (double) count)+1):0)
/*--------------------------------------------------------------*/
#define PRENORM_NONE (p->weight)
#define PRENORM_MAX (p->weight/docstat.max)