Diff for /rpl/lapack/lapack/dsytrf.f between versions 1.17 and 1.18

version 1.17, 2018/05/29 07:18:09 version 1.18, 2020/05/21 21:46:02
Line 39 Line 39
 *> the Bunch-Kaufman diagonal pivoting method.  The form of the  *> the Bunch-Kaufman diagonal pivoting method.  The form of the
 *> factorization is  *> factorization is
 *>  *>
 *>    A = U*D*U**T  or  A = L*D*L**T  *>    A = U**T*D*U  or  A = L*D*L**T
 *>  *>
 *> where U (or L) is a product of permutation and unit upper (lower)  *> where U (or L) is a product of permutation and unit upper (lower)
 *> triangular matrices, and D is symmetric and block diagonal with  *> triangular matrices, and D is symmetric and block diagonal with
Line 144 Line 144
 *>  *>
 *> \verbatim  *> \verbatim
 *>  *>
 *>  If UPLO = 'U', then A = U*D*U**T, where  *>  If UPLO = 'U', then A = U**T*D*U, 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
Line 262 Line 262
 *  *
       IF( UPPER ) THEN        IF( UPPER ) THEN
 *  *
 *        Factorize A as U*D*U**T using the upper triangle of A  *        Factorize A as U**T*D*U 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;

Removed from v.1.17  
changed lines
  Added in v.1.18


CVSweb interface <joel.bertrand@systella.fr>