diff --git a/include/bx/inline/simd128_langext.inl b/include/bx/inline/simd128_langext.inl
index 0c4479e..0f6fa03 100644
--- a/include/bx/inline/simd128_langext.inl
+++ b/include/bx/inline/simd128_langext.inl
@@ -9,6 +9,8 @@
 
 namespace bx
 {
+	float sqrt(float);
+
 #define ELEMx 0
 #define ELEMy 1
 #define ELEMz 2
diff --git a/include/bx/inline/simd128_ref.inl b/include/bx/inline/simd128_ref.inl
index 121be13..2a47cea 100644
--- a/include/bx/inline/simd128_ref.inl
+++ b/include/bx/inline/simd128_ref.inl
@@ -7,10 +7,11 @@
 #	error "Must be included from bx/simd_t.h!"
 #endif // BX_SIMD_T_H_HEADER_GUARD
 
-#include <bx/math.h>
-
 namespace bx
 {
+	float sqrt(float);
+	float rsqrt(float);
+
 #define ELEMx 0
 #define ELEMy 1
 #define ELEMz 2
diff --git a/include/bx/math.h b/include/bx/math.h
index c12a7fa..432a533 100644
--- a/include/bx/math.h
+++ b/include/bx/math.h
@@ -26,6 +26,8 @@ namespace bx
 	extern const float kE;
 	extern const float kNearZero;
 	extern const float kInfinity;
+	extern const float kFloatMin;
+	extern const float kFloatMax;
 
 	///
 	typedef float (*LerpFn)(float _a, float _b, float _t);
diff --git a/src/math.cpp b/src/math.cpp
index b792651..87948f6 100644
--- a/src/math.cpp
+++ b/src/math.cpp
@@ -174,7 +174,6 @@ namespace bx
 		static const float kExpC2  =  6.61375632143793436117e-05f;
 		static const float kExpC3  = -1.65339022054652515390e-06f;
 		static const float kExpC4  =  4.13813679705723846039e-08f;
-		static const float kExpMax =  7.09782712893383973096e+02f;
 
 	} // namespace