Function check

test/fastmath.cpp:12–19

#include "main.h"

void check(bool b, bool ref)
{
  std::cout << b;
  if(b==ref)
    std::cout << " OK  ";
  else
    std::cout << " BAD ";
}

#if EIGEN_COMP_MSVC && EIGEN_COMP_MSVC < 1800
namespace std {