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floating point errors

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This is a rotation matrix that is calculated for rotating a bone in local space:
[       -1.#IND -1.#IND 0       0.0647044       ]
[       -1.#IND -1.#IND 1       40.7455 ]
[       -1.#IND -1.#IND 0       0       ]
[       0       0       0       1       ]
So, what exactly is this floating point error? Is it even a floating point error, because I've googled it and wikipedia'd it, and I've gotten nothing. If possible, could someone direct me to a site which lists errors like these, because whenever I happen upon one, it's usually important and I can hardly ever find these things on the net. I figure I'm just not looking in the right place.

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Guest Anonymous Poster
A little bit of googling gave my this page. Best guess is that #Ind stands for an indeterminate operation and is a QNaN (Quiet Not a Number).

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