ndk/tests/device/test-gnustl-full/unit/unary.h

   1 #ifndef _unary_h
   2 #define _unary_h
   3 #include <cmath>
   4 #include <cfloat>
   5 #include <functional>    //*TY 12/26/1998 - added to get unary_function
   6
   7 #if !defined (STLPORT) || defined (_STLP_USE_NAMESPACES)
   8 using std::unary_function;
   9 #endif
  10
  11 struct odd : public unary_function<int, bool> {
  12   bool operator()(int n_) const { return(n_ % 2) == 1; }
  13 };
  14
  15 struct positive : public unary_function<int, bool> {
  16   bool operator()(int n_) const { return n_ >= 0; }
  17 };
  18
  19 struct square_root : public unary_function<double, double> {
  20   double operator()(double x_) const
  21   { return ::sqrt(x_); }
  22 };
  23 #endif // _unary_h