diff --git a/pce_fast/cdrom/SimpleFIFO.h b/pce_fast/cdrom/SimpleFIFO.h
index a1a43fb..083cd95 100644
--- a/pce_fast/cdrom/SimpleFIFO.h
+++ b/pce_fast/cdrom/SimpleFIFO.h
@@ -3,8 +3,6 @@
 
 #include <assert.h>
 
-#include "math_ops.h"
-
 template<typename T>
 class SimpleFIFO
 {
diff --git a/pce_fast/mednafen/math_ops.h b/pce_fast/mednafen/math_ops.h
deleted file mode 100644
index 85e4e58..0000000
--- a/pce_fast/mednafen/math_ops.h
+++ /dev/null
@@ -1,40 +0,0 @@
-#ifndef __MDFN_MATH_OPS_H
-#define __MDFN_MATH_OPS_H
-#include "mednafen.h"
-
-static INLINE uint32 uilog2(uint32 v)
-{
- // http://graphics.stanford.edu/~seander/bithacks.html#IntegerLogDeBruijn
-
- static const uint32 MultiplyDeBruijnBitPosition[32] = 
- {
-   0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30,
-   8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31
- };
-
- v |= v >> 1; // first round down to one less than a power of 2 
- v |= v >> 2;
- v |= v >> 4;
- v |= v >> 8;
- v |= v >> 16;
-
- return MultiplyDeBruijnBitPosition[(uint32_t)(v * 0x07C4ACDDU) >> 27];
-}
-
-// Some compilers' optimizers and some platforms might fubar the generated code from these macros,
-// so some tests are run in...tests.cpp
-#define sign_8_to_s16(_value) ((int16)(int8)(_value))
-#define sign_9_to_s16(_value)  (((int16)((unsigned int)(_value) << 7)) >> 7)
-#define sign_10_to_s16(_value)  (((int16)((uint32)(_value) << 6)) >> 6)
-#define sign_11_to_s16(_value)  (((int16)((uint32)(_value) << 5)) >> 5)
-#define sign_12_to_s16(_value)  (((int16)((uint32)(_value) << 4)) >> 4)
-#define sign_13_to_s16(_value)  (((int16)((uint32)(_value) << 3)) >> 3)
-#define sign_14_to_s16(_value)  (((int16)((uint32)(_value) << 2)) >> 2)
-#define sign_15_to_s16(_value)  (((int16)((uint32)(_value) << 1)) >> 1)
-
-// This obviously won't convert higher-than-32 bit numbers to signed 32-bit ;)
-// Also, this shouldn't be used for 8-bit and 16-bit signed numbers, since you can
-// convert those faster with typecasts...
-#define sign_x_to_s32(_bits, _value) (((int32)((uint32)(_value) << (32 - _bits))) >> (32 - _bits))
-
-#endif
diff --git a/pce_fast/mednafen/mednafen.h b/pce_fast/mednafen/mednafen.h
index 41a2f1c..728adfd 100644
--- a/pce_fast/mednafen/mednafen.h
+++ b/pce_fast/mednafen/mednafen.h
@@ -6,7 +6,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include "mednafen-types.h"
-#include "math_ops.h"
 #include "settings.h"
 #include "git.h"
 extern MDFNGI MDFNGameInfo;