Bicimal

[Paul Dale]

(05-21-2019 02:06 PM)KeithB Wrote:  Just what is the problem?

An introduction to rounding needs to be inserted. It is a very difficult problem. Google Williams Kahan's publications for an introduction to the complexities and nuances -- remembering that he is a world leading genius on numerical analysis and presents results as if they required little thought even though few others could have found his solution.

I was recently discussing the most difficult programming I've ever had to do with a colleague. I couldn't decide between:

• Hardware bring up where there is no debug capability (until a serial port or LED can be controlled). Noting that hardware documentation is often misleading, lacking or just plain wrong.
• Numerical programming where there is always a result but you never know if it is correct or not. Often you have no idea how far from correct it is or what went wrong. Now expand this to a matrix operation over thousands or millions of numbers. Where was the error?
  

It really is a toss up between the two.