Re: strange problem

[Geraint Paul Bevan]

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Laurent Jacques wrote:

| Of course but I think that the question was:
|
| Why the top-left entry of
|       [1,100;0,1]*[1,0;(-1/100),1]
| is
|       -2.0817e-17
| while octave returns the true 0 if you enter
|       1 + (100*-1/100)
|
| Does Octave perform some LU decomposing of matrix to realize matrix
| multiplication ?
| This could explain the difference between the two results.
|


Octave uses the BLAS (or ATLAS) library to manipulate matrices:
http://www.netlib.org/blas/index.html

- --
Geraint Bevan
http://homepage.ntlworld.com/geraint.bevan

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