Try to avoid exp overflowing.

diff --git a/src/classifiers/bayes.c b/src/classifiers/bayes.c
index 24174187f03fec2b9e1a546521668dfdb308c2f3..77e02ea6b73793e5929a9e47e2c01cb371fd3da5 100644 (file)
--- a/src/classifiers/bayes.c
+++ b/src/classifiers/bayes.c
@@ -111,7 +111,7 @@ bayes_learn_callback (gpointer key, gpointer value, gpointer data)
 static gdouble
 inv_chi_square (gdouble value, gint freedom_deg)
 {
-       gdouble prob, sum;
+       long double prob, sum;
        gint i;
 
        if ((freedom_deg & 1) != 0) {
@@ -121,7 +121,7 @@ inv_chi_square (gdouble value, gint freedom_deg)
 
        value /= 2.;
        errno = 0;
-       prob = exp (-value);
+       prob = expl (-value);
        if (errno == ERANGE) {
                msg_err ("exp overflow");
                return 0;
@@ -288,7 +288,7 @@ bayes_classify (struct classifier_ctx* ctx, statfile_pool_t *pool, GTree *input,
                final_prob = (s + 1 - h) / 2.;
        }
 
-       if (final_prob > 0 && fabs (final_prob - 0.5) > 0.1) {
+       if (final_prob > 0 && fabs (final_prob - 0.5) > 0.05) {
 
                sumbuf = memory_pool_alloc (task->task_pool, 32);
                for (i = 0; i < cnt; i ++) {