Due to usage of fsum() and fdot(), during most calculations the type will
be mpmathified, so force_type=float is currently pointless.

Either we need to replace fsum() with sum() for force_type not in
(mpmathify, mpf, mpc), or to drop force_type completely.

What do you think?

Original issue for #156: http://code.google.com/p/mpmath/issues/detail?id=116

Original author: https://code.google.com/u/[email protected]/

Original owner: https://code.google.com/u/[email protected]/