Carsten\'s encode functions for pseudo-fp

encode.c

@@ -1,6 +1,6 @@
 /* encode.c -- encoding and decoding of CoAP data types
  *
- * (c) 2010 Olaf Bergmann <bergmann@tzi.org>
+ * (c) 2010 Carsten Bormann
  */
 
 #ifndef NDEBUG
@@ -9,24 +9,11 @@
 
 #include "encode.h"
 
-unsigned int 
-coap_pseudo_encode( unsigned int val ) {
-  unsigned int e = 0;
-
-  if ( val < HIBIT )
-    return val;
-
-  if ( val > MAX_VALUE ) {
-#ifndef NDEBUG
-    fprintf(stderr, "cannot encode value %u\n", val);
-#endif
-    return ( 1 << N ) - 1;
-  }
-  
-  while ( HIBIT < (val & ~0xff) ) {
-    val = val >> 1;
-    e += 1;
-  }
-
-  return (val & ~EMASK) | e;
+/* Carsten suggested this when fls() is not available: */
+int coap_fls(unsigned int i) {
+  int n;
+  for (n = 0; i; n++)
+    i >>= 1;
+  return n;
 }
+