tnt_math_utils.h

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#ifndef MATH_UTILS_H
#define MATH_UTILS_H

/* needed for fabs, sqrt() below */
#include <cmath>

#ifdef _WIN32
#define hypot _hypot
#endif

namespace TNT
{
template <class Real>
Real hypot(const Real &a, const Real &b)
{
    
    if (a== 0)
        return fabs(b);
    else
    {
        Real c = b/a;
        return fabs(a) * sqrt(1 + c*c);
    }
}
} /* TNT namespace */



#endif
/* MATH_UTILS_H */