diff --git a/include/math.h b/include/math.h
index d439a8c..3cec274 100755
--- a/include/math.h
+++ b/include/math.h
@@ -12,8 +12,6 @@
 #ifndef _MATH_H
 #define _MATH_H
 
-#include <sys/types.h>
-
 #if FLT_EVAL_METHOD == 1
 typedef double float_t;
 typedef double double_t;
@@ -40,6 +38,10 @@ typedef double double_t;
 #define M_LN2 0.69314718056
 #define M_LN10 2.302585093
 
+#define MATH_ERRNO 1
+#define MATH_ERREXCEPT 2
+#define math_errhandling (int) (MATH_ERRNO | MATH_ERREXCEPT)
+
 double acos(double);
 float acosf(float);
 long double acosl(long double);
@@ -108,6 +110,10 @@ double frexp(double, int *);
 float frexpf(float, int *);
 long double frexpl(double, int *);
 
+double fabs(double);
+float fabsf(float);
+long double fabsl(long double);
+
 
 
 #endif