Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
Drexel University or The Math Forum.



Lapack spptrf function
Posted:
Apr 9, 2013 10:07 AM


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 unidimensional 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.



