Function from_integer

code/math/linear_program.cpp:33–37

*/
template <class Int>
inline std::string from_integer(Int v, int width, char fill) {
	std::ostringstream string_stream;
	string_stream << std::setfill(fill) << std::setw(width) << v;
	return string_stream.str();
}


//double Bound::infinity_ = std::numeric_limits<double>::max();