diff --git a/vop/cmVectOps.h b/vop/cmVectOps.h
index 13a0c7a..2b85053 100644
--- a/vop/cmVectOps.h
+++ b/vop/cmVectOps.h
@@ -104,7 +104,9 @@ cmReal_t cmVOI_Variance(const int* sp, unsigned sn, const cmReal_t* mean);
 // dbp[1,dn] = v[1,vn] * m[vn,dn]
 cmComplexR_t* cmVORC_MultVVM( cmComplexR_t* dbp, unsigned dn, const cmComplexR_t* vp, unsigned vn, const cmComplexR_t* m );
 
-
+#define cmAbs(x)              _Generic((x),  double:fabs,       float:fabsf,      int:abs,        unsigned:abs,        default:fabs )(x)  
+#define cmIsClose(x0,x1,eps)  _Generic((x0), double:cmIsCloseD, float:cmIsCloseF, int:cmIsCloseI, unsigned:cmIsCloseU, default:cmIsCloseD)(x0,x1,eps)
+  
 #ifdef __cplusplus
 }
 #endif
diff --git a/vop/cmVectOpsRICode.h b/vop/cmVectOpsRICode.h
index 99ec57a..8630345 100644
--- a/vop/cmVectOpsRICode.h
+++ b/vop/cmVectOpsRICode.h
@@ -873,22 +873,12 @@ bool VECT_OP_FUNC(IsEqual)( const VECT_OP_TYPE* s0p, const VECT_OP_TYPE* s1p, un
   return true;
 }
 
-bool VECT_OP_FUNC(IsClose)( const VECT_OP_TYPE* s0p, const VECT_OP_TYPE* s1p, unsigned sn, double pct )
+bool VECT_OP_FUNC(IsClose)( const VECT_OP_TYPE* s0p, const VECT_OP_TYPE* s1p, unsigned sn, double eps )
 {
   const VECT_OP_TYPE* ep = s0p + sn;
   for(; s0p < ep; ++s0p,++s1p )
   {
-    double d = *s1p - *s0p;
-    double s = cmMin(*s1p,*s0p);
-
-    // take abs value of d and s
-    if( d < 0 )
-      d *= -1;
-
-    if( s < 0 )
-      s *= -1;
-
-    if( d*100.0/s > pct )
+    if( !cmIsClose(*s0p,*s1p,eps) )
       return false;
   }
   return true;
diff --git a/vop/cmVectOpsRIHdr.h b/vop/cmVectOpsRIHdr.h
index 24c716b..9227004 100644
--- a/vop/cmVectOpsRIHdr.h
+++ b/vop/cmVectOpsRIHdr.h
@@ -137,8 +137,9 @@ unsigned*  VECT_OP_FUNC(MaxIndexM)( unsigned* dp, const VECT_OP_TYPE* sp, unsign
 /// Return true if s0p[sn] is equal to s1p[sn]
 bool       VECT_OP_FUNC(IsEqual)( const VECT_OP_TYPE* s0p, const VECT_OP_TYPE* s1p, unsigned sn );
 
-/// Return true if all elements of s0p[sn] are within 'pct' percent of s1p[sn].
-bool VECT_OP_FUNC(IsClose)( const VECT_OP_TYPE* s0p, const VECT_OP_TYPE* s1p, unsigned sn, double pct );
+/// Return true if all elements of s0p[sn] are within 'eps' of s1p[sn].
+/// This function is based on cmMath.h:cmIsCloseX()
+bool VECT_OP_FUNC(IsClose)( const VECT_OP_TYPE* s0p, const VECT_OP_TYPE* s1p, unsigned sn, double eps );
 
 /// Return the most frequently occuring element in sp.
 VECT_OP_TYPE  VECT_OP_FUNC(Mode)(     const VECT_OP_TYPE* sp, unsigned sn );