A fancier func to get order of 2

diff --git a/nnn.c b/nnn.c
index 20a5f0a70d32a19a218aac81880de9fe44d04d44..b2f5da3fceeed7819e1a33140eb37e7b5d9a0f0b 100644 (file)
--- a/nnn.c
+++ b/nnn.c
@@ -1564,37 +1564,20 @@ show_stats(char *fpath, char *fname, struct stat *sb)
        return 0;
 }
 
+/*
+ * Get the order of 2 for this size
+ * In brief - return the number of trailing zeroes
+ */
 static int
 getorder(size_t size)
 {
-       switch (size) {
-       case 4096:
-               return 12;
-       case 512:
-               return 9;
-       case 8192:
-               return 13;
-       case 16384:
-               return 14;
-       case 32768:
-               return 15;
-       case 65536:
-               return 16;
-       case 131072:
-               return 17;
-       case 262144:
-               return 18;
-       case 524288:
-               return 19;
-       case 1048576:
-               return 20;
-       case 2048:
-               return 11;
-       case 1024:
-               return 10;
-       default:
-               return 0;
-       }
+       static int count, mask;
+
+       for (mask = 1, count = 0; count < 32; mask <<= 1, ++count)
+               if ((size & mask) != 0)
+                       return count;
+
+       return 32;
 }
 
 static size_t