diff --git a/math/mathcore/src/mixmax.h b/math/mathcore/src/mixmax.h
index c779daf4a85db12beac6425dad712917f7099e4e..4e8a20510fd1793a1faf4becb2913ee5e5df2f1c 100755
--- a/math/mathcore/src/mixmax.h
+++ b/math/mathcore/src/mixmax.h
@@ -44,13 +44,13 @@ N=240, s=487013230256099140, m=2^51+1
 #define N _N
 #endif
 
-#ifndef __LP64__
+//#ifndef __LP64__
 typedef uint64_t myuint;
 //#warning but no problem,  'myuint' is 'uint64_t'
-#else
-typedef unsigned long long int myuint;
+//#else
+//typedef unsigned long long int myuint;
 //#warning but no problem,  'myuint' is 'unsigned long long int'
-#endif
+//#endif
 
 struct rng_state_st
 {
diff --git a/math/mathcore/src/mixmax_oldS.h b/math/mathcore/src/mixmax_oldS.h
index c34956643d0fc018105c0ec9a19d9cd39fb63013..f97ba7c34627cb63fe1a051f8df043b87539dc8e 100644
--- a/math/mathcore/src/mixmax_oldS.h
+++ b/math/mathcore/src/mixmax_oldS.h
@@ -17,13 +17,13 @@
 #define N _N
 #endif
 
-#ifndef __LP64__
+//#ifndef __LP64__
 typedef uint64_t myuint;
 //#warning but no problem,  'myuint' is 'uint64_t'
-#else
-typedef unsigned long long int myuint;
+//#else
+//typedef unsigned long long int myuint;
 //#warning but no problem,  'myuint' is 'unsigned long long int'
-#endif
+//#endif
 
 struct rng_state_st
 {