libbaltfloat: decimal to balanced ternary float conversion broken

[ThomasTheSpaceFox]

while the balanced ternary to decimal float conversion does work, the decimal to balanced ternary float conversion does not convert the floats anywhere near accurately. this needs to be corrected before other operations in libbaltfloat can be adjusted.

notes:

• should not be too slow, but should also not be too inaccurate.