I fixed the bug de­scribed in this thread and cleaned up the root find­ing al­go­rithm. I’m still un­happy about it, but I have no time to code a bet­ter one right now (i.e. Ridder, Brent). I also added changes.txt and todo.txt to keep track of things.

Changes.txt

V1

1. Fixed call to throw in bi­sec­tion
2. Changed find­Bounds algo
3. Added TestXirrBugs func­tion
4. Removed the NewValue func­tions every­where

ToDo.txt

1. The in­ter­ac­tion of Bisection and Newton algo in find­Root needs re­view. It seems like it is work­ing now, but it could use some love. Maybe I should switch to a bet­ter root find­ing algo (i.e. Rudder or Brent)