Miscellaneous Mathematical Utilities:
"This page contains links to several mathematical utilities. More will be added as I write them. The algorithms underlying these utilities come from the BLAS, EISPACK, and LINPACK collection of subprograms, written by some of the brightest mathematicians and computer scientists (I have cited sources when I found them). Those subprograms incorporate excellent basic algorithms and programming techniques to optimize the routines for speed and accuracy. "

Because these utilities are written in Javascript, make sure Javascript is enabled in your Internet browser.

http://www.akiti.ca/Mathfxns.html