1 files changed, 37 insertions, 0 deletions
diff --git a/sourcecodes/k-best/src/ilogi.c b/sourcecodes/k-best/src/ilogi.c
new file mode 100644
index 00000000..50a8e651
--- /dev/null
+++ b/sourcecodes/k-best/src/ilogi.c
@@ -0,0 +1,37 @@
+#include <stdlib.h>
+#include <math.h>
+#include "cfg.h"
+#include "ilogi.h"
+
+score_t* ilogi = NULL;
+int      len_ilogi = 0;
+
+static int refcount = 0;
+
+int ensure_ilogi(int maxi){
+  if (maxi >= len_ilogi)
+    len_ilogi = maxi+1;
+  
+  ilogi = (score_t*) realloc(ilogi, len_ilogi * sizeof(score_t));
+  ++refcount;
+
+  {
+    int i;
+
+    if (ilogi) 
+      ilogi[0] = 0.0;
+
+    for(i=1;i<len_ilogi;++i) 
+      ilogi[i] = i*log(i);
+  }
+  
+  return 1;
+}
+ 
+void free_ilogi(){
+  --refcount;
+  if (!refcount){
+    free(ilogi);
+    ilogi = NULL;
+  }
+}