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#ifndef __SPTOOLS_UTIL_H__
#define __SPTOOLS_UTIL_H__
/*
* Same as std::divides, except return x/0 == 0 for integer types, without
* raising a SIGFPE.
*/
template <class T>
struct safe_divides {
T operator() (const T& x, const T& y) const {
if (y == 0) {
return 0;
}
else {
return x/y;
}
}
typedef T first_argument_type;
typedef T second_argument_type;
typedef T result_type;
};
#define OVERRIDE_safe_divides(typ) \
template<> inline typ safe_divides<typ>::operator()(const typ& x, const typ& y) const { return x/y; }
OVERRIDE_safe_divides(float)
OVERRIDE_safe_divides(double)
OVERRIDE_safe_divides(long double)
OVERRIDE_safe_divides(npy_cfloat_wrapper)
OVERRIDE_safe_divides(npy_cdouble_wrapper)
OVERRIDE_safe_divides(npy_clongdouble_wrapper)
#undef OVERRIDE_safe_divides
template <class T>
struct maximum {
T operator() (const T& x, const T& y) const {
return std::max(x, y);
}
};
template <class T>
struct minimum {
T operator() (const T& x, const T& y) const {
return std::min(x, y);
}
};
#endif
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