home *** CD-ROM | disk | FTP | other *** search
-
-
-
- CCCCPPPPOOOOTTTTRRRRFFFF((((3333SSSS)))) CCCCPPPPOOOOTTTTRRRRFFFF((((3333SSSS))))
-
-
-
- NNNNAAAAMMMMEEEE
- CPOTRF - compute the Cholesky factorization of a complex Hermitian
- positive definite matrix A
-
- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- SUBROUTINE CPOTRF( UPLO, N, A, LDA, INFO )
-
- CHARACTER UPLO
-
- INTEGER INFO, LDA, N
-
- COMPLEX A( LDA, * )
-
- IIIIMMMMPPPPLLLLEEEEMMMMEEEENNNNTTTTAAAATTTTIIIIOOOONNNN
- These routines are part of the SCSL Scientific Library and can be loaded
- using either the -lscs or the -lscs_mp option. The -lscs_mp option
- directs the linker to use the multi-processor version of the library.
-
- When linking to SCSL with -lscs or -lscs_mp, the default integer size is
- 4 bytes (32 bits). Another version of SCSL is available in which integers
- are 8 bytes (64 bits). This version allows the user access to larger
- memory sizes and helps when porting legacy Cray codes. It can be loaded
- by using the -lscs_i8 option or the -lscs_i8_mp option. A program may use
- only one of the two versions; 4-byte integer and 8-byte integer library
- calls cannot be mixed.
-
- PPPPUUUURRRRPPPPOOOOSSSSEEEE
- 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.
-
-
- AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
- UPLO (input) CHARACTER*1
- = 'U': Upper triangle of A is stored;
- = 'L': Lower triangle of A is stored.
-
- N (input) INTEGER
- The order of the matrix A. N >= 0.
-
- A (input/output) 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.
-
-
-
- PPPPaaaaggggeeee 1111
-
-
-
-
-
-
- CCCCPPPPOOOOTTTTRRRRFFFF((((3333SSSS)))) CCCCPPPPOOOOTTTTRRRRFFFF((((3333SSSS))))
-
-
-
- On exit, if INFO = 0, the factor U or L from the Cholesky
- factorization A = U**H*U or A = L*L**H.
-
- LDA (input) INTEGER
- The leading dimension of the array A. LDA >= max(1,N).
-
- INFO (output) 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 completed.
-
- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- INTRO_LAPACK(3S), INTRO_SCSL(3S)
-
- This man page is available only online.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- PPPPaaaaggggeeee 2222
-
-
-
-