Rather than just adding more bits - doubles and double-doubles, I like the idea of moving around the boundary between the exponent and mantissa as necessary for

Rather than just adding more bits - doubles and double-doubles, I like the idea of moving around the boundary between the exponent and mantissa as necessary for the application, as well as adding the ability to determine how uncertain the number actually is. http://sites.ieee.org/scv-cs/files/2013/03/Right-SizingPrecision1.pdf http://sites.ieee.org/scv-cs/files/2013/03/Right-SizingPreci... www.amazon.com/The-End-Error-Computing-Computational/dp/1482239868