#3 matrix inversion BUG FIX

[Anonymous]

The file /efis/src/matrix.c has a bug. It performs the LU
decomposition right. invL is also fine but invU is wrong.

I implemented and optimized the calculation of invL
and invU without any function calls and it works fine with
the test I have done (12x12 and 13x13 matrix
inversions)

I also added some code from the /sim/src/mat/old-
matlib.cpp for the n=1 and n=2 cases.

I hope it will be useful for you.

I sent this e-mail to Mr. Hudson, but I had no response
and i don't know if he received it.

Santiago Fuster

Universidad Politecnica de Valencia

[Nobody/Anonymous]

/efis/src/matrix.c