math_aux.h revision e46c9386c4f79aa40185f79a19fc5b2a7ef528b3 
1#ifndef __MATH_AUX_H
2#define __MATH_AUX_H
3
4#include <limits>
5
6#undef __STD
7#if !defined (STLPORT) || defined (_STLP_USE_NAMESPACES)
8#  define __STD std::
9#else
10#  define __STD
11#endif
12
13/*
14 * This function is not only used to compare floating point values with a tolerance,
15 * it also leads to ambiguity problems if the called functions do not have the
16 * right prototype.
17 */
18template <class _Tp>
19bool are_equals(_Tp val, _Tp ref) {
20  if (val < ref) {
21    return (ref - val) <= __STD numeric_limits<_Tp>::epsilon();
22  }
23  else {
24    return (val - ref) <= __STD numeric_limits<_Tp>::epsilon();
25  }
26}
27
28#undef __STD
29
30#endif // __MATH_AUX_H
31