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{d/s}sytrf: fix documentation error in UPLO='U' factorization #1306

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{d/s}sytrf: fix documentation error in UPLO='U' factorization #1306

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6 changes: 3 additions & 3 deletions SRC/dsytrf.f
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@
*> the Bunch-Kaufman diagonal pivoting method. The form of the
*> factorization is
*>
*> A = U**T*D*U or A = L*D*L**T
*> A = U*D*U**T or A = L*D*L**T
*>
*> where U (or L) is a product of permutation and unit upper (lower)
*> triangular matrices, and D is symmetric and block diagonal with
Expand Down Expand Up @@ -140,7 +140,7 @@
*>
*> \verbatim
*>
*> If UPLO = 'U', then A = U**T*D*U, where
*> If UPLO = 'U', then A = U*D*U**T, where
*> 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
*> 1 in steps of 1 or 2, and D is a block diagonal matrix with 1-by-1
Expand Down Expand Up @@ -259,7 +259,7 @@ SUBROUTINE DSYTRF( UPLO, N, A, LDA, IPIV, WORK, LWORK, INFO )
*
IF( UPPER ) THEN
*
* Factorize A as U**T*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
* KB, where KB is the number of columns factorized by DLASYF;
Expand Down
6 changes: 3 additions & 3 deletions SRC/ssytrf.f
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@
*> the Bunch-Kaufman diagonal pivoting method. The form of the
*> factorization is
*>
*> A = U**T*D*U or A = L*D*L**T
*> A = U*D*U**T or A = L*D*L**T
*>
*> where U (or L) is a product of permutation and unit upper (lower)
*> triangular matrices, and D is symmetric and block diagonal with
Expand Down Expand Up @@ -140,7 +140,7 @@
*>
*> \verbatim
*>
*> If UPLO = 'U', then A = U**T*D*U, where
*> If UPLO = 'U', then A = U*D*U**T, where
*> 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
*> 1 in steps of 1 or 2, and D is a block diagonal matrix with 1-by-1
Expand Down Expand Up @@ -260,7 +260,7 @@ SUBROUTINE SSYTRF( UPLO, N, A, LDA, IPIV, WORK, LWORK, INFO )
*
IF( UPPER ) THEN
*
* Factorize A as U**T*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
* KB, where KB is the number of columns factorized by SLASYF;
Expand Down
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