Author: YunQiang Su <wzssyqa@gmail.com>
Description: make it compile on mips/mipsel
Index: spim/CPU/run.c
===================================================================
--- spim.orig/CPU/run.c	2013-10-13 12:04:11.724244468 +0800
+++ spim/CPU/run.c	2013-10-13 12:12:42.678913961 +0800
@@ -31,12 +31,7 @@
 */
 
 
-#ifdef mips
-#define _IEEE 1
-#include <nan.h>
-#else
 #define NaN(X) ((X) != (X))
-#endif
 
 #include <math.h>
 #include <stdio.h>