5261 libm should stop using synonyms.h

@@ -24,11 +24,11 @@
 /*
  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#pragma weak floor = __floor
+#pragma weak __floor = floor
 
 /*
  * floor(x) returns the biggest integral value less than or equal to x.
  * NOTE: floor(x) returns result with the same sign as x's, including 0.
  *