Returns the greatest lower bound of the range of values potentially returned by member operator().
Because student_t_distribution represents an unbounded distribution, the function returns the minimum value representable by result_type:
either numeric_limits<result_type>::lowest() or -numeric_limits<result_type>::infinity(), depending on library implementation.
Parameters
none
Return value
The value of the greatest lower bound of the distribution's range that is representable with result_type. result_type is a member type, defined as an alias of the first class template parameter (RealType).