version 1.2, 2010/04/21 13:45:23
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version 1.8, 2011/07/22 07:38:10
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SUBROUTINE DPPTRF( UPLO, N, AP, INFO ) |
SUBROUTINE DPPTRF( UPLO, N, AP, INFO ) |
* |
* |
* -- LAPACK routine (version 3.2) -- |
* -- LAPACK routine (version 3.3.1) -- |
* -- LAPACK is a software package provided by Univ. of Tennessee, -- |
* -- LAPACK is a software package provided by Univ. of Tennessee, -- |
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- |
* November 2006 |
* -- April 2011 -- |
* |
* |
* .. Scalar Arguments .. |
* .. Scalar Arguments .. |
CHARACTER UPLO |
CHARACTER UPLO |
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* |
* |
IF( UPPER ) THEN |
IF( UPPER ) THEN |
* |
* |
* Compute the Cholesky factorization A = U'*U. |
* Compute the Cholesky factorization A = U**T*U. |
* |
* |
JJ = 0 |
JJ = 0 |
DO 10 J = 1, N |
DO 10 J = 1, N |
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10 CONTINUE |
10 CONTINUE |
ELSE |
ELSE |
* |
* |
* Compute the Cholesky factorization A = L*L'. |
* Compute the Cholesky factorization A = L*L**T. |
* |
* |
JJ = 1 |
JJ = 1 |
DO 20 J = 1, N |
DO 20 J = 1, N |