//-------------------------------------------------------------------
-// Epsilon : Returns a real + the smallest real positive value.
+// Epsilon : The function returns absolute value of difference
+// between 'Value' and other nearest value of
+// Standard_Real type.
+// Nearest value is choseen in direction of infinity
+// the same sign as 'Value'.
+// If 'Value' is 0 then returns minimal positive value
+// of Standard_Real type.
//-------------------------------------------------------------------
inline Standard_Real Epsilon (const Standard_Real Value)
{