--- libecb/ecb.h	2015/11/21 16:53:50	1.167
+++ libecb/ecb.h	2015/11/21 20:56:38	1.169
@@ -450,7 +450,7 @@
   ecb_function_ ecb_const int
   ecb_ctz64 (uint64_t x)
   {
-    int shift = x & 0xffffffffU ? 0 : 32;
+    int shift = x & 0xffffffff ? 0 : 32;
     return ecb_ctz32 (x >> shift) + shift;
   }
 
@@ -726,7 +726,7 @@
   if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
     return s | 0x7c00;
 
-  /* handle zero and subnormals */
+  /* handle zero, subnormals and small numbers */
   if (ecb_expect_true (x < 0x38800000))
     {
       /* zero */
@@ -735,6 +735,10 @@
 
       /* handle subnormals */
 
+      /* too small, will be zero */
+      if (e < (14 - 24)) /* might not be sharp, but is good enough */
+        return s;
+
       m |= 0x00800000; /* make implicit bit explicit */
 
       /* very tricky - we need to round to the nearest e (+10) bit value */