removed lapack/getri because it was never used

4 files changed, 0 insertions, 774 deletions

diff --git a/lapack/getri/cgetri.f b/lapack/getri/cgetri.f
deleted file mode 100644
index 6840f531c..000000000
--- a/lapack/getri/cgetri.f
+++ /dev/null
@@ -1,194 +0,0 @@
-      SUBROUTINE CGETRI( N, A, LDA, IPIV, WORK, LWORK, INFO )
-*
-*  -- LAPACK routine (version 3.0) --
-*     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
-*     Courant Institute, Argonne National Lab, and Rice University
-*     June 30, 1999
-*
-*     .. Scalar Arguments ..
-      INTEGER            INFO, LDA, LWORK, N
-*     ..
-*     .. Array Arguments ..
-      INTEGER            IPIV( * )
-      COMPLEX            A( LDA, * ), WORK( * )
-*     ..
-*
-*  Purpose
-*  =======
-*
-*  CGETRI computes the inverse of a matrix using the LU factorization
-*  computed by CGETRF.
-*
-*  This method inverts U and then computes inv(A) by solving the system
-*  inv(A)*L = inv(U) for inv(A).
-*
-*  Arguments
-*  =========
-*
-*  N       (input) INTEGER
-*          The order of the matrix A.  N >= 0.
-*
-*  A       (input/output) COMPLEX array, dimension (LDA,N)
-*          On entry, the factors L and U from the factorization
-*          A = P*L*U as computed by CGETRF.
-*          On exit, if INFO = 0, the inverse of the original matrix A.
-*
-*  LDA     (input) INTEGER
-*          The leading dimension of the array A.  LDA >= max(1,N).
-*
-*  IPIV    (input) INTEGER array, dimension (N)
-*          The pivot indices from CGETRF; for 1<=i<=N, row i of the
-*          matrix was interchanged with row IPIV(i).
-*
-*  WORK    (workspace/output) COMPLEX array, dimension (LWORK)
-*          On exit, if INFO=0, then WORK(1) returns the optimal LWORK.
-*
-*  LWORK   (input) INTEGER
-*          The dimension of the array WORK.  LWORK >= max(1,N).
-*          For optimal performance LWORK >= N*NB, where NB is
-*          the optimal blocksize returned by ILAENV.
-*
-*          If LWORK = -1, then a workspace query is assumed; the routine
-*          only calculates the optimal size of the WORK array, returns
-*          this value as the first entry of the WORK array, and no error
-*          message related to LWORK is issued by XERBLA.
-*
-*  INFO    (output) INTEGER
-*          = 0:  successful exit
-*          < 0:  if INFO = -i, the i-th argument had an illegal value
-*          > 0:  if INFO = i, U(i,i) is exactly zero; the matrix is
-*                singular and its inverse could not be computed.
-*
-*  =====================================================================
-*
-*     .. Parameters ..
-      COMPLEX            ZERO, ONE
-      PARAMETER          ( ZERO = ( 0.0E+0, 0.0E+0 ),
-     $                   ONE = ( 1.0E+0, 0.0E+0 ) )
-*     ..
-*     .. Local Scalars ..
-      LOGICAL            LQUERY
-      INTEGER            I, IWS, J, JB, JJ, JP, LDWORK, LWKOPT, NB,
-     $                   NBMIN, NN
-*     ..
-*     .. External Functions ..
-      INTEGER            ILAENV
-      EXTERNAL           ILAENV
-*     ..
-*     .. External Subroutines ..
-      EXTERNAL           CGEMM, CGEMV, CSWAP, CTRSM, CTRTRI, XERBLA
-*     ..
-*     .. Intrinsic Functions ..
-      INTRINSIC          MAX, MIN
-*     ..
-*     .. Executable Statements ..
-*
-*     Test the input parameters.
-*
-      INFO = 0
-      NB = ILAENV( 1, 'CGETRI', ' ', N, -1, -1, -1 )
-      LWKOPT = N*NB
-      WORK( 1 ) = LWKOPT
-      LQUERY = ( LWORK.EQ.-1 )
-      IF( N.LT.0 ) THEN
-         INFO = -1
-      ELSE IF( LDA.LT.MAX( 1, N ) ) THEN
-         INFO = -3
-      ELSE IF( LWORK.LT.MAX( 1, N ) .AND. .NOT.LQUERY ) THEN
-         INFO = -6
-      END IF
-      IF( INFO.NE.0 ) THEN
-         CALL XERBLA( 'CGETRI', -INFO )
-         RETURN
-      ELSE IF( LQUERY ) THEN
-         RETURN
-      END IF
-*
-*     Quick return if possible
-*
-      IF( N.EQ.0 )
-     $   RETURN
-*
-*     Form inv(U).  If INFO > 0 from CTRTRI, then U is singular,
-*     and the inverse is not computed.
-*
-      CALL CTRTRI( 'Upper', 'Non-unit', N, A, LDA, INFO )
-      IF( INFO.GT.0 )
-     $   RETURN
-*
-      NBMIN = 2
-      LDWORK = N
-      IF( NB.GT.1 .AND. NB.LT.N ) THEN
-         IWS = MAX( LDWORK*NB, 1 )
-         IF( LWORK.LT.IWS ) THEN
-            NB = LWORK / LDWORK
-            NBMIN = MAX( 2, ILAENV( 2, 'CGETRI', ' ', N, -1, -1, -1 ) )
-         END IF
-      ELSE
-         IWS = N
-      END IF
-*
-*     Solve the equation inv(A)*L = inv(U) for inv(A).
-*
-      IF( NB.LT.NBMIN .OR. NB.GE.N ) THEN
-*
-*        Use unblocked code.
-*
-         DO 20 J = N, 1, -1
-*
-*           Copy current column of L to WORK and replace with zeros.
-*
-            DO 10 I = J + 1, N
-               WORK( I ) = A( I, J )
-               A( I, J ) = ZERO
-   10       CONTINUE
-*
-*           Compute current column of inv(A).
-*
-            IF( J.LT.N )
-     $         CALL CGEMV( 'No transpose', N, N-J, -ONE, A( 1, J+1 ),
-     $                     LDA, WORK( J+1 ), 1, ONE, A( 1, J ), 1 )
-   20    CONTINUE
-      ELSE
-*
-*        Use blocked code.
-*
-         NN = ( ( N-1 ) / NB )*NB + 1
-         DO 50 J = NN, 1, -NB
-            JB = MIN( NB, N-J+1 )
-*
-*           Copy current block column of L to WORK and replace with
-*           zeros.
-*
-            DO 40 JJ = J, J + JB - 1
-               DO 30 I = JJ + 1, N
-                  WORK( I+( JJ-J )*LDWORK ) = A( I, JJ )
-                  A( I, JJ ) = ZERO
-   30          CONTINUE
-   40       CONTINUE
-*
-*           Compute current block column of inv(A).
-*
-            IF( J+JB.LE.N )
-     $         CALL CGEMM( 'No transpose', 'No transpose', N, JB,
-     $                     N-J-JB+1, -ONE, A( 1, J+JB ), LDA,
-     $                     WORK( J+JB ), LDWORK, ONE, A( 1, J ), LDA )
-            CALL CTRSM( 'Right', 'Lower', 'No transpose', 'Unit', N, JB,
-     $                  ONE, WORK( J ), LDWORK, A( 1, J ), LDA )
-   50    CONTINUE
-      END IF
-*
-*     Apply column interchanges.
-*
-      DO 60 J = N - 1, 1, -1
-         JP = IPIV( J )
-         IF( JP.NE.J )
-     $      CALL CSWAP( N, A( 1, J ), 1, A( 1, JP ), 1 )
-   60 CONTINUE
-*
-      WORK( 1 ) = IWS
-      RETURN
-*
-*     End of CGETRI
-*
-      END
diff --git a/lapack/getri/dgetri.f b/lapack/getri/dgetri.f
deleted file mode 100644
index c67a34803..000000000
--- a/lapack/getri/dgetri.f
+++ /dev/null
@@ -1,193 +0,0 @@
-      SUBROUTINE DGETRI( N, A, LDA, IPIV, WORK, LWORK, INFO )
-*
-*  -- LAPACK routine (version 3.0) --
-*     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
-*     Courant Institute, Argonne National Lab, and Rice University
-*     June 30, 1999
-*
-*     .. Scalar Arguments ..
-      INTEGER            INFO, LDA, LWORK, N
-*     ..
-*     .. Array Arguments ..
-      INTEGER            IPIV( * )
-      DOUBLE PRECISION   A( LDA, * ), WORK( * )
-*     ..
-*
-*  Purpose
-*  =======
-*
-*  DGETRI computes the inverse of a matrix using the LU factorization
-*  computed by DGETRF.
-*
-*  This method inverts U and then computes inv(A) by solving the system
-*  inv(A)*L = inv(U) for inv(A).
-*
-*  Arguments
-*  =========
-*
-*  N       (input) INTEGER
-*          The order of the matrix A.  N >= 0.
-*
-*  A       (input/output) DOUBLE PRECISION array, dimension (LDA,N)
-*          On entry, the factors L and U from the factorization
-*          A = P*L*U as computed by DGETRF.
-*          On exit, if INFO = 0, the inverse of the original matrix A.
-*
-*  LDA     (input) INTEGER
-*          The leading dimension of the array A.  LDA >= max(1,N).
-*
-*  IPIV    (input) INTEGER array, dimension (N)
-*          The pivot indices from DGETRF; for 1<=i<=N, row i of the
-*          matrix was interchanged with row IPIV(i).
-*
-*  WORK    (workspace/output) DOUBLE PRECISION array, dimension (LWORK)
-*          On exit, if INFO=0, then WORK(1) returns the optimal LWORK.
-*
-*  LWORK   (input) INTEGER
-*          The dimension of the array WORK.  LWORK >= max(1,N).
-*          For optimal performance LWORK >= N*NB, where NB is
-*          the optimal blocksize returned by ILAENV.
-*
-*          If LWORK = -1, then a workspace query is assumed; the routine
-*          only calculates the optimal size of the WORK array, returns
-*          this value as the first entry of the WORK array, and no error
-*          message related to LWORK is issued by XERBLA.
-*
-*  INFO    (output) INTEGER
-*          = 0:  successful exit
-*          < 0:  if INFO = -i, the i-th argument had an illegal value
-*          > 0:  if INFO = i, U(i,i) is exactly zero; the matrix is
-*                singular and its inverse could not be computed.
-*
-*  =====================================================================
-*
-*     .. Parameters ..
-      DOUBLE PRECISION   ZERO, ONE
-      PARAMETER          ( ZERO = 0.0D+0, ONE = 1.0D+0 )
-*     ..
-*     .. Local Scalars ..
-      LOGICAL            LQUERY
-      INTEGER            I, IWS, J, JB, JJ, JP, LDWORK, LWKOPT, NB,
-     $                   NBMIN, NN
-*     ..
-*     .. External Functions ..
-      INTEGER            ILAENV
-      EXTERNAL           ILAENV
-*     ..
-*     .. External Subroutines ..
-      EXTERNAL           DGEMM, DGEMV, DSWAP, DTRSM, DTRTRI, XERBLA
-*     ..
-*     .. Intrinsic Functions ..
-      INTRINSIC          MAX, MIN
-*     ..
-*     .. Executable Statements ..
-*
-*     Test the input parameters.
-*
-      INFO = 0
-      NB = ILAENV( 1, 'DGETRI', ' ', N, -1, -1, -1 )
-      LWKOPT = N*NB
-      WORK( 1 ) = LWKOPT
-      LQUERY = ( LWORK.EQ.-1 )
-      IF( N.LT.0 ) THEN
-         INFO = -1
-      ELSE IF( LDA.LT.MAX( 1, N ) ) THEN
-         INFO = -3
-      ELSE IF( LWORK.LT.MAX( 1, N ) .AND. .NOT.LQUERY ) THEN
-         INFO = -6
-      END IF
-      IF( INFO.NE.0 ) THEN
-         CALL XERBLA( 'DGETRI', -INFO )
-         RETURN
-      ELSE IF( LQUERY ) THEN
-         RETURN
-      END IF
-*
-*     Quick return if possible
-*
-      IF( N.EQ.0 )
-     $   RETURN
-*
-*     Form inv(U).  If INFO > 0 from DTRTRI, then U is singular,
-*     and the inverse is not computed.
-*
-      CALL DTRTRI( 'Upper', 'Non-unit', N, A, LDA, INFO )
-      IF( INFO.GT.0 )
-     $   RETURN
-*
-      NBMIN = 2
-      LDWORK = N
-      IF( NB.GT.1 .AND. NB.LT.N ) THEN
-         IWS = MAX( LDWORK*NB, 1 )
-         IF( LWORK.LT.IWS ) THEN
-            NB = LWORK / LDWORK
-            NBMIN = MAX( 2, ILAENV( 2, 'DGETRI', ' ', N, -1, -1, -1 ) )
-         END IF
-      ELSE
-         IWS = N
-      END IF
-*
-*     Solve the equation inv(A)*L = inv(U) for inv(A).
-*
-      IF( NB.LT.NBMIN .OR. NB.GE.N ) THEN
-*
-*        Use unblocked code.
-*
-         DO 20 J = N, 1, -1
-*
-*           Copy current column of L to WORK and replace with zeros.
-*
-            DO 10 I = J + 1, N
-               WORK( I ) = A( I, J )
-               A( I, J ) = ZERO
-   10       CONTINUE
-*
-*           Compute current column of inv(A).
-*
-            IF( J.LT.N )
-     $         CALL DGEMV( 'No transpose', N, N-J, -ONE, A( 1, J+1 ),
-     $                     LDA, WORK( J+1 ), 1, ONE, A( 1, J ), 1 )
-   20    CONTINUE
-      ELSE
-*
-*        Use blocked code.
-*
-         NN = ( ( N-1 ) / NB )*NB + 1
-         DO 50 J = NN, 1, -NB
-            JB = MIN( NB, N-J+1 )
-*
-*           Copy current block column of L to WORK and replace with
-*           zeros.
-*
-            DO 40 JJ = J, J + JB - 1
-               DO 30 I = JJ + 1, N
-                  WORK( I+( JJ-J )*LDWORK ) = A( I, JJ )
-                  A( I, JJ ) = ZERO
-   30          CONTINUE
-   40       CONTINUE
-*
-*           Compute current block column of inv(A).
-*
-            IF( J+JB.LE.N )
-     $         CALL DGEMM( 'No transpose', 'No transpose', N, JB,
-     $                     N-J-JB+1, -ONE, A( 1, J+JB ), LDA,
-     $                     WORK( J+JB ), LDWORK, ONE, A( 1, J ), LDA )
-            CALL DTRSM( 'Right', 'Lower', 'No transpose', 'Unit', N, JB,
-     $                  ONE, WORK( J ), LDWORK, A( 1, J ), LDA )
-   50    CONTINUE
-      END IF
-*
-*     Apply column interchanges.
-*
-      DO 60 J = N - 1, 1, -1
-         JP = IPIV( J )
-         IF( JP.NE.J )
-     $      CALL DSWAP( N, A( 1, J ), 1, A( 1, JP ), 1 )
-   60 CONTINUE
-*
-      WORK( 1 ) = IWS
-      RETURN
-*
-*     End of DGETRI
-*
-      END
diff --git a/lapack/getri/sgetri.f b/lapack/getri/sgetri.f
deleted file mode 100644
index ec5932f16..000000000
--- a/lapack/getri/sgetri.f
+++ /dev/null
@@ -1,193 +0,0 @@
-      SUBROUTINE SGETRI( N, A, LDA, IPIV, WORK, LWORK, INFO )
-*
-*  -- LAPACK routine (version 3.0) --
-*     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
-*     Courant Institute, Argonne National Lab, and Rice University
-*     June 30, 1999
-*
-*     .. Scalar Arguments ..
-      INTEGER            INFO, LDA, LWORK, N
-*     ..
-*     .. Array Arguments ..
-      INTEGER            IPIV( * )
-      REAL               A( LDA, * ), WORK( * )
-*     ..
-*
-*  Purpose
-*  =======
-*
-*  SGETRI computes the inverse of a matrix using the LU factorization
-*  computed by SGETRF.
-*
-*  This method inverts U and then computes inv(A) by solving the system
-*  inv(A)*L = inv(U) for inv(A).
-*
-*  Arguments
-*  =========
-*
-*  N       (input) INTEGER
-*          The order of the matrix A.  N >= 0.
-*
-*  A       (input/output) REAL array, dimension (LDA,N)
-*          On entry, the factors L and U from the factorization
-*          A = P*L*U as computed by SGETRF.
-*          On exit, if INFO = 0, the inverse of the original matrix A.
-*
-*  LDA     (input) INTEGER
-*          The leading dimension of the array A.  LDA >= max(1,N).
-*
-*  IPIV    (input) INTEGER array, dimension (N)
-*          The pivot indices from SGETRF; for 1<=i<=N, row i of the
-*          matrix was interchanged with row IPIV(i).
-*
-*  WORK    (workspace/output) REAL array, dimension (LWORK)
-*          On exit, if INFO=0, then WORK(1) returns the optimal LWORK.
-*
-*  LWORK   (input) INTEGER
-*          The dimension of the array WORK.  LWORK >= max(1,N).
-*          For optimal performance LWORK >= N*NB, where NB is
-*          the optimal blocksize returned by ILAENV.
-*
-*          If LWORK = -1, then a workspace query is assumed; the routine
-*          only calculates the optimal size of the WORK array, returns
-*          this value as the first entry of the WORK array, and no error
-*          message related to LWORK is issued by XERBLA.
-*
-*  INFO    (output) INTEGER
-*          = 0:  successful exit
-*          < 0:  if INFO = -i, the i-th argument had an illegal value
-*          > 0:  if INFO = i, U(i,i) is exactly zero; the matrix is
-*                singular and its inverse could not be computed.
-*
-*  =====================================================================
-*
-*     .. Parameters ..
-      REAL               ZERO, ONE
-      PARAMETER          ( ZERO = 0.0E+0, ONE = 1.0E+0 )
-*     ..
-*     .. Local Scalars ..
-      LOGICAL            LQUERY
-      INTEGER            I, IWS, J, JB, JJ, JP, LDWORK, LWKOPT, NB,
-     $                   NBMIN, NN
-*     ..
-*     .. External Functions ..
-      INTEGER            ILAENV
-      EXTERNAL           ILAENV
-*     ..
-*     .. External Subroutines ..
-      EXTERNAL           SGEMM, SGEMV, SSWAP, STRSM, STRTRI, XERBLA
-*     ..
-*     .. Intrinsic Functions ..
-      INTRINSIC          MAX, MIN
-*     ..
-*     .. Executable Statements ..
-*
-*     Test the input parameters.
-*
-      INFO = 0
-      NB = ILAENV( 1, 'SGETRI', ' ', N, -1, -1, -1 )
-      LWKOPT = N*NB
-      WORK( 1 ) = LWKOPT
-      LQUERY = ( LWORK.EQ.-1 )
-      IF( N.LT.0 ) THEN
-         INFO = -1
-      ELSE IF( LDA.LT.MAX( 1, N ) ) THEN
-         INFO = -3
-      ELSE IF( LWORK.LT.MAX( 1, N ) .AND. .NOT.LQUERY ) THEN
-         INFO = -6
-      END IF
-      IF( INFO.NE.0 ) THEN
-         CALL XERBLA( 'SGETRI', -INFO )
-         RETURN
-      ELSE IF( LQUERY ) THEN
-         RETURN
-      END IF
-*
-*     Quick return if possible
-*
-      IF( N.EQ.0 )
-     $   RETURN
-*
-*     Form inv(U).  If INFO > 0 from STRTRI, then U is singular,
-*     and the inverse is not computed.
-*
-      CALL STRTRI( 'Upper', 'Non-unit', N, A, LDA, INFO )
-      IF( INFO.GT.0 )
-     $   RETURN
-*
-      NBMIN = 2
-      LDWORK = N
-      IF( NB.GT.1 .AND. NB.LT.N ) THEN
-         IWS = MAX( LDWORK*NB, 1 )
-         IF( LWORK.LT.IWS ) THEN
-            NB = LWORK / LDWORK
-            NBMIN = MAX( 2, ILAENV( 2, 'SGETRI', ' ', N, -1, -1, -1 ) )
-         END IF
-      ELSE
-         IWS = N
-      END IF
-*
-*     Solve the equation inv(A)*L = inv(U) for inv(A).
-*
-      IF( NB.LT.NBMIN .OR. NB.GE.N ) THEN
-*
-*        Use unblocked code.
-*
-         DO 20 J = N, 1, -1
-*
-*           Copy current column of L to WORK and replace with zeros.
-*
-            DO 10 I = J + 1, N
-               WORK( I ) = A( I, J )
-               A( I, J ) = ZERO
-   10       CONTINUE
-*
-*           Compute current column of inv(A).
-*
-            IF( J.LT.N )
-     $         CALL SGEMV( 'No transpose', N, N-J, -ONE, A( 1, J+1 ),
-     $                     LDA, WORK( J+1 ), 1, ONE, A( 1, J ), 1 )
-   20    CONTINUE
-      ELSE
-*
-*        Use blocked code.
-*
-         NN = ( ( N-1 ) / NB )*NB + 1
-         DO 50 J = NN, 1, -NB
-            JB = MIN( NB, N-J+1 )
-*
-*           Copy current block column of L to WORK and replace with
-*           zeros.
-*
-            DO 40 JJ = J, J + JB - 1
-               DO 30 I = JJ + 1, N
-                  WORK( I+( JJ-J )*LDWORK ) = A( I, JJ )
-                  A( I, JJ ) = ZERO
-   30          CONTINUE
-   40       CONTINUE
-*
-*           Compute current block column of inv(A).
-*
-            IF( J+JB.LE.N )
-     $         CALL SGEMM( 'No transpose', 'No transpose', N, JB,
-     $                     N-J-JB+1, -ONE, A( 1, J+JB ), LDA,
-     $                     WORK( J+JB ), LDWORK, ONE, A( 1, J ), LDA )
-            CALL STRSM( 'Right', 'Lower', 'No transpose', 'Unit', N, JB,
-     $                  ONE, WORK( J ), LDWORK, A( 1, J ), LDA )
-   50    CONTINUE
-      END IF
-*
-*     Apply column interchanges.
-*
-      DO 60 J = N - 1, 1, -1
-         JP = IPIV( J )
-         IF( JP.NE.J )
-     $      CALL SSWAP( N, A( 1, J ), 1, A( 1, JP ), 1 )
-   60 CONTINUE
-*
-      WORK( 1 ) = IWS
-      RETURN
-*
-*     End of SGETRI
-*
-      END
diff --git a/lapack/getri/zgetri.f b/lapack/getri/zgetri.f
deleted file mode 100644
index 1eb4eb7f1..000000000
--- a/lapack/getri/zgetri.f
+++ /dev/null
@@ -1,194 +0,0 @@
-      SUBROUTINE ZGETRI( N, A, LDA, IPIV, WORK, LWORK, INFO )
-*
-*  -- LAPACK routine (version 3.0) --
-*     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
-*     Courant Institute, Argonne National Lab, and Rice University
-*     June 30, 1999
-*
-*     .. Scalar Arguments ..
-      INTEGER            INFO, LDA, LWORK, N
-*     ..
-*     .. Array Arguments ..
-      INTEGER            IPIV( * )
-      COMPLEX*16         A( LDA, * ), WORK( * )
-*     ..
-*
-*  Purpose
-*  =======
-*
-*  ZGETRI computes the inverse of a matrix using the LU factorization
-*  computed by ZGETRF.
-*
-*  This method inverts U and then computes inv(A) by solving the system
-*  inv(A)*L = inv(U) for inv(A).
-*
-*  Arguments
-*  =========
-*
-*  N       (input) INTEGER
-*          The order of the matrix A.  N >= 0.
-*
-*  A       (input/output) COMPLEX*16 array, dimension (LDA,N)
-*          On entry, the factors L and U from the factorization
-*          A = P*L*U as computed by ZGETRF.
-*          On exit, if INFO = 0, the inverse of the original matrix A.
-*
-*  LDA     (input) INTEGER
-*          The leading dimension of the array A.  LDA >= max(1,N).
-*
-*  IPIV    (input) INTEGER array, dimension (N)
-*          The pivot indices from ZGETRF; for 1<=i<=N, row i of the
-*          matrix was interchanged with row IPIV(i).
-*
-*  WORK    (workspace/output) COMPLEX*16 array, dimension (LWORK)
-*          On exit, if INFO=0, then WORK(1) returns the optimal LWORK.
-*
-*  LWORK   (input) INTEGER
-*          The dimension of the array WORK.  LWORK >= max(1,N).
-*          For optimal performance LWORK >= N*NB, where NB is
-*          the optimal blocksize returned by ILAENV.
-*
-*          If LWORK = -1, then a workspace query is assumed; the routine
-*          only calculates the optimal size of the WORK array, returns
-*          this value as the first entry of the WORK array, and no error
-*          message related to LWORK is issued by XERBLA.
-*
-*  INFO    (output) INTEGER
-*          = 0:  successful exit
-*          < 0:  if INFO = -i, the i-th argument had an illegal value
-*          > 0:  if INFO = i, U(i,i) is exactly zero; the matrix is
-*                singular and its inverse could not be computed.
-*
-*  =====================================================================
-*
-*     .. Parameters ..
-      COMPLEX*16         ZERO, ONE
-      PARAMETER          ( ZERO = ( 0.0D+0, 0.0D+0 ),
-     $                   ONE = ( 1.0D+0, 0.0D+0 ) )
-*     ..
-*     .. Local Scalars ..
-      LOGICAL            LQUERY
-      INTEGER            I, IWS, J, JB, JJ, JP, LDWORK, LWKOPT, NB,
-     $                   NBMIN, NN
-*     ..
-*     .. External Functions ..
-      INTEGER            ILAENV
-      EXTERNAL           ILAENV
-*     ..
-*     .. External Subroutines ..
-      EXTERNAL           XERBLA, ZGEMM, ZGEMV, ZSWAP, ZTRSM, ZTRTRI
-*     ..
-*     .. Intrinsic Functions ..
-      INTRINSIC          MAX, MIN
-*     ..
-*     .. Executable Statements ..
-*
-*     Test the input parameters.
-*
-      INFO = 0
-      NB = ILAENV( 1, 'ZGETRI', ' ', N, -1, -1, -1 )
-      LWKOPT = N*NB
-      WORK( 1 ) = LWKOPT
-      LQUERY = ( LWORK.EQ.-1 )
-      IF( N.LT.0 ) THEN
-         INFO = -1
-      ELSE IF( LDA.LT.MAX( 1, N ) ) THEN
-         INFO = -3
-      ELSE IF( LWORK.LT.MAX( 1, N ) .AND. .NOT.LQUERY ) THEN
-         INFO = -6
-      END IF
-      IF( INFO.NE.0 ) THEN
-         CALL XERBLA( 'ZGETRI', -INFO )
-         RETURN
-      ELSE IF( LQUERY ) THEN
-         RETURN
-      END IF
-*
-*     Quick return if possible
-*
-      IF( N.EQ.0 )
-     $   RETURN
-*
-*     Form inv(U).  If INFO > 0 from ZTRTRI, then U is singular,
-*     and the inverse is not computed.
-*
-      CALL ZTRTRI( 'Upper', 'Non-unit', N, A, LDA, INFO )
-      IF( INFO.GT.0 )
-     $   RETURN
-*
-      NBMIN = 2
-      LDWORK = N
-      IF( NB.GT.1 .AND. NB.LT.N ) THEN
-         IWS = MAX( LDWORK*NB, 1 )
-         IF( LWORK.LT.IWS ) THEN
-            NB = LWORK / LDWORK
-            NBMIN = MAX( 2, ILAENV( 2, 'ZGETRI', ' ', N, -1, -1, -1 ) )
-         END IF
-      ELSE
-         IWS = N
-      END IF
-*
-*     Solve the equation inv(A)*L = inv(U) for inv(A).
-*
-      IF( NB.LT.NBMIN .OR. NB.GE.N ) THEN
-*
-*        Use unblocked code.
-*
-         DO 20 J = N, 1, -1
-*
-*           Copy current column of L to WORK and replace with zeros.
-*
-            DO 10 I = J + 1, N
-               WORK( I ) = A( I, J )
-               A( I, J ) = ZERO
-   10       CONTINUE
-*
-*           Compute current column of inv(A).
-*
-            IF( J.LT.N )
-     $         CALL ZGEMV( 'No transpose', N, N-J, -ONE, A( 1, J+1 ),
-     $                     LDA, WORK( J+1 ), 1, ONE, A( 1, J ), 1 )
-   20    CONTINUE
-      ELSE
-*
-*        Use blocked code.
-*
-         NN = ( ( N-1 ) / NB )*NB + 1
-         DO 50 J = NN, 1, -NB
-            JB = MIN( NB, N-J+1 )
-*
-*           Copy current block column of L to WORK and replace with
-*           zeros.
-*
-            DO 40 JJ = J, J + JB - 1
-               DO 30 I = JJ + 1, N
-                  WORK( I+( JJ-J )*LDWORK ) = A( I, JJ )
-                  A( I, JJ ) = ZERO
-   30          CONTINUE
-   40       CONTINUE
-*
-*           Compute current block column of inv(A).
-*
-            IF( J+JB.LE.N )
-     $         CALL ZGEMM( 'No transpose', 'No transpose', N, JB,
-     $                     N-J-JB+1, -ONE, A( 1, J+JB ), LDA,
-     $                     WORK( J+JB ), LDWORK, ONE, A( 1, J ), LDA )
-            CALL ZTRSM( 'Right', 'Lower', 'No transpose', 'Unit', N, JB,
-     $                  ONE, WORK( J ), LDWORK, A( 1, J ), LDA )
-   50    CONTINUE
-      END IF
-*
-*     Apply column interchanges.
-*
-      DO 60 J = N - 1, 1, -1
-         JP = IPIV( J )
-         IF( JP.NE.J )
-     $      CALL ZSWAP( N, A( 1, J ), 1, A( 1, JP ), 1 )
-   60 CONTINUE
-*
-      WORK( 1 ) = IWS
-      RETURN
-*
-*     End of ZGETRI
-*
-      END