CPOTRF man page on Oracle

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cpotrf.f(3)			    LAPACK			   cpotrf.f(3)

       cpotrf.f -

       subroutine cpotrf (UPLO, N, A, LDA, INFO)

Function/Subroutine Documentation
   subroutine cpotrf (characterUPLO, integerN, complex, dimension( lda, * )A,
       integerLDA, integerINFO)


	    CPOTRF computes the Cholesky factorization of a complex Hermitian
	    positive definite matrix A.

	    The factorization has the form
	       A = U**H * U,  if UPLO = 'U', or
	       A = L  * L**H,  if UPLO = 'L',
	    where U is an upper triangular matrix and L is lower triangular.

	    This is the block version of the algorithm, calling Level 3 BLAS.


		     UPLO is CHARACTER*1
		     = 'U':  Upper triangle of A is stored;
		     = 'L':  Lower triangle of A is stored.


		     N is INTEGER
		     The order of the matrix A.	 N >= 0.


		     A is COMPLEX array, dimension (LDA,N)
		     On entry, the Hermitian matrix A.	If UPLO = 'U', the leading
		     N-by-N upper triangular part of A contains the upper
		     triangular part of the matrix A, and the strictly lower
		     triangular part of A is not referenced.  If UPLO = 'L', the
		     leading N-by-N lower triangular part of A contains the lower
		     triangular part of the matrix A, and the strictly upper
		     triangular part of A is not referenced.

		     On exit, if INFO = 0, the factor U or L from the Cholesky
		     factorization A = U**H*U or A = L*L**H.


		     LDA is INTEGER
		     The leading dimension of the array A.  LDA >= max(1,N).


		     INFO is INTEGER
		     = 0:  successful exit
		     < 0:  if INFO = -i, the i-th argument had an illegal value
		     > 0:  if INFO = i, the leading minor of order i is not
			   positive definite, and the factorization could not be

	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

	   November 2011

       Definition at line 108 of file cpotrf.f.

       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2			Tue Sep 25 2012			   cpotrf.f(3)

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