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Topic: Lapack spptrf function
Replies: 10   Last Post: Apr 12, 2013 11:08 AM

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Francesco Perrone

Posts: 39
Registered: 5/2/12
Lapack spptrf function
Posted: Apr 9, 2013 10:07 AM
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Hi everybody,

I have got a question concerning a specific LAPACK function: spptrf.

spptrf allows for a Cholesky factorization of a given positive definite symmetric matrix by only input of the upper (respectively lower) triangular factor, stored as an array.

Therefore is the given matrix has N*N dimension, spptrf will receive as input only the N(N+1)/2 independent element stored as uni-dimensional matrix.

Now, I've seen that C:\Program Files\MATLAB\R2012a\extern\include\lapack.h includes spptrf. But can I directly call spptrf?

I do need this function in order to drastically reduce the computational effort of my current code.

I thank you in advance for any support you will show.

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