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Diff for /rpl/lapack/lapack/dsytrf.f between versions 1.7 and 1.8

version 1.7, 2010/12/21 13:53:39 version 1.8, 2011/07/22 07:38:12
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       SUBROUTINE DSYTRF( UPLO, N, A, LDA, IPIV, WORK, LWORK, INFO )        SUBROUTINE DSYTRF( UPLO, N, A, LDA, IPIV, WORK, LWORK, 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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 *  Further Details  *  Further Details
 *  ===============  *  ===============
 *  *
 *  If UPLO = 'U', then A = U*D*U', where  *  If UPLO = 'U', then A = U*D*U**T, where
 *     U = P(n)*U(n)* ... *P(k)U(k)* ...,  *     U = P(n)*U(n)* ... *P(k)U(k)* ...,
 *  i.e., U is a product of terms P(k)*U(k), where k decreases from n to  *  i.e., U is a product of terms P(k)*U(k), where k decreases from n to
 *  1 in steps of 1 or 2, and D is a block diagonal matrix with 1-by-1  *  1 in steps of 1 or 2, and D is a block diagonal matrix with 1-by-1
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 *  If s = 2, the upper triangle of D(k) overwrites A(k-1,k-1), A(k-1,k),  *  If s = 2, the upper triangle of D(k) overwrites A(k-1,k-1), A(k-1,k),
 *  and A(k,k), and v overwrites A(1:k-2,k-1:k).  *  and A(k,k), and v overwrites A(1:k-2,k-1:k).
 *  *
 *  If UPLO = 'L', then A = L*D*L', where  *  If UPLO = 'L', then A = L*D*L**T, where
 *     L = P(1)*L(1)* ... *P(k)*L(k)* ...,  *     L = P(1)*L(1)* ... *P(k)*L(k)* ...,
 *  i.e., L is a product of terms P(k)*L(k), where k increases from 1 to  *  i.e., L is a product of terms P(k)*L(k), where k increases from 1 to
 *  n in steps of 1 or 2, and D is a block diagonal matrix with 1-by-1  *  n in steps of 1 or 2, and D is a block diagonal matrix with 1-by-1
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 *  *
       IF( UPPER ) THEN        IF( UPPER ) THEN
 *  *
 *        Factorize A as U*D*U' using the upper triangle of A  *        Factorize A as U*D*U**T using the upper triangle of A
 *  *
 *        K is the main loop index, decreasing from N to 1 in steps of  *        K is the main loop index, decreasing from N to 1 in steps of
 *        KB, where KB is the number of columns factorized by DLASYF;  *        KB, where KB is the number of columns factorized by DLASYF;
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 *  *
       ELSE        ELSE
 *  *
 *        Factorize A as L*D*L' using the lower triangle of A  *        Factorize A as L*D*L**T using the lower triangle of A
 *  *
 *        K is the main loop index, increasing from 1 to N in steps of  *        K is the main loop index, increasing from 1 to N in steps of
 *        KB, where KB is the number of columns factorized by DLASYF;  *        KB, where KB is the number of columns factorized by DLASYF;
Removed from v.1.7  
changed lines
  Added in v.1.8

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