Rework fuzzy check module.

- Now all checks are organized to rules.
- Allow to specify read_only rules to avoid problems on learning.
- Use better normalizer for fuzzy module and it now returns values
  from 0 to 1.0 (like bayes does).
- Update configuration accordingly.
- Drop legacy configuration support.
- Detect tanh as well and provide some reasonable (linear) fallback.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/cfg_utils.c b/src/cfg_utils.c
index 765ff7f34..d015d60a0 100644
--- a/src/cfg_utils.c
+++ b/src/cfg_utils.c
@@ -635,12 +635,14 @@ internal_normalizer_func (struct config_file *cfg, long double score, void *data
     }
 #ifdef HAVE_TANHL
     return max * tanhl (score / max);
-#else
+#elif defined(HAVE_TANHL)
     /*
      * As some implementations of libm does not support tanhl, try to use
      * tanh
      */
     return max * tanh ((double) (score / max));
+#else
+    return score < max ? score / max : max;
 #endif
 }