summaryrefslogtreecommitdiff
path: root/src/lib/lapack/zgebak.f
diff options
context:
space:
mode:
authorjofret2009-04-28 07:17:00 +0000
committerjofret2009-04-28 07:17:00 +0000
commit8c8d2f518968ce7057eec6aa5cd5aec8faab861a (patch)
tree3dd1788b71d6a3ce2b73d2d475a3133580e17530 /src/lib/lapack/zgebak.f
parent9f652ffc16a310ac6641a9766c5b9e2671e0e9cb (diff)
downloadscilab2c-8c8d2f518968ce7057eec6aa5cd5aec8faab861a.tar.gz
scilab2c-8c8d2f518968ce7057eec6aa5cd5aec8faab861a.tar.bz2
scilab2c-8c8d2f518968ce7057eec6aa5cd5aec8faab861a.zip
Moving lapack to right place
Diffstat (limited to 'src/lib/lapack/zgebak.f')
-rw-r--r--src/lib/lapack/zgebak.f189
1 files changed, 0 insertions, 189 deletions
diff --git a/src/lib/lapack/zgebak.f b/src/lib/lapack/zgebak.f
deleted file mode 100644
index 1023601d..00000000
--- a/src/lib/lapack/zgebak.f
+++ /dev/null
@@ -1,189 +0,0 @@
- SUBROUTINE ZGEBAK( JOB, SIDE, N, ILO, IHI, SCALE, M, V, LDV,
- $ INFO )
-*
-* -- LAPACK routine (version 3.1) --
-* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
-* November 2006
-*
-* .. Scalar Arguments ..
- CHARACTER JOB, SIDE
- INTEGER IHI, ILO, INFO, LDV, M, N
-* ..
-* .. Array Arguments ..
- DOUBLE PRECISION SCALE( * )
- COMPLEX*16 V( LDV, * )
-* ..
-*
-* Purpose
-* =======
-*
-* ZGEBAK forms the right or left eigenvectors of a complex general
-* matrix by backward transformation on the computed eigenvectors of the
-* balanced matrix output by ZGEBAL.
-*
-* Arguments
-* =========
-*
-* JOB (input) CHARACTER*1
-* Specifies the type of backward transformation required:
-* = 'N', do nothing, return immediately;
-* = 'P', do backward transformation for permutation only;
-* = 'S', do backward transformation for scaling only;
-* = 'B', do backward transformations for both permutation and
-* scaling.
-* JOB must be the same as the argument JOB supplied to ZGEBAL.
-*
-* SIDE (input) CHARACTER*1
-* = 'R': V contains right eigenvectors;
-* = 'L': V contains left eigenvectors.
-*
-* N (input) INTEGER
-* The number of rows of the matrix V. N >= 0.
-*
-* ILO (input) INTEGER
-* IHI (input) INTEGER
-* The integers ILO and IHI determined by ZGEBAL.
-* 1 <= ILO <= IHI <= N, if N > 0; ILO=1 and IHI=0, if N=0.
-*
-* SCALE (input) DOUBLE PRECISION array, dimension (N)
-* Details of the permutation and scaling factors, as returned
-* by ZGEBAL.
-*
-* M (input) INTEGER
-* The number of columns of the matrix V. M >= 0.
-*
-* V (input/output) COMPLEX*16 array, dimension (LDV,M)
-* On entry, the matrix of right or left eigenvectors to be
-* transformed, as returned by ZHSEIN or ZTREVC.
-* On exit, V is overwritten by the transformed eigenvectors.
-*
-* LDV (input) INTEGER
-* The leading dimension of the array V. LDV >= max(1,N).
-*
-* INFO (output) INTEGER
-* = 0: successful exit
-* < 0: if INFO = -i, the i-th argument had an illegal value.
-*
-* =====================================================================
-*
-* .. Parameters ..
- DOUBLE PRECISION ONE
- PARAMETER ( ONE = 1.0D+0 )
-* ..
-* .. Local Scalars ..
- LOGICAL LEFTV, RIGHTV
- INTEGER I, II, K
- DOUBLE PRECISION S
-* ..
-* .. External Functions ..
- LOGICAL LSAME
- EXTERNAL LSAME
-* ..
-* .. External Subroutines ..
- EXTERNAL XERBLA, ZDSCAL, ZSWAP
-* ..
-* .. Intrinsic Functions ..
- INTRINSIC MAX, MIN
-* ..
-* .. Executable Statements ..
-*
-* Decode and Test the input parameters
-*
- RIGHTV = LSAME( SIDE, 'R' )
- LEFTV = LSAME( SIDE, 'L' )
-*
- INFO = 0
- IF( .NOT.LSAME( JOB, 'N' ) .AND. .NOT.LSAME( JOB, 'P' ) .AND.
- $ .NOT.LSAME( JOB, 'S' ) .AND. .NOT.LSAME( JOB, 'B' ) ) THEN
- INFO = -1
- ELSE IF( .NOT.RIGHTV .AND. .NOT.LEFTV ) THEN
- INFO = -2
- ELSE IF( N.LT.0 ) THEN
- INFO = -3
- ELSE IF( ILO.LT.1 .OR. ILO.GT.MAX( 1, N ) ) THEN
- INFO = -4
- ELSE IF( IHI.LT.MIN( ILO, N ) .OR. IHI.GT.N ) THEN
- INFO = -5
- ELSE IF( M.LT.0 ) THEN
- INFO = -7
- ELSE IF( LDV.LT.MAX( 1, N ) ) THEN
- INFO = -9
- END IF
- IF( INFO.NE.0 ) THEN
- CALL XERBLA( 'ZGEBAK', -INFO )
- RETURN
- END IF
-*
-* Quick return if possible
-*
- IF( N.EQ.0 )
- $ RETURN
- IF( M.EQ.0 )
- $ RETURN
- IF( LSAME( JOB, 'N' ) )
- $ RETURN
-*
- IF( ILO.EQ.IHI )
- $ GO TO 30
-*
-* Backward balance
-*
- IF( LSAME( JOB, 'S' ) .OR. LSAME( JOB, 'B' ) ) THEN
-*
- IF( RIGHTV ) THEN
- DO 10 I = ILO, IHI
- S = SCALE( I )
- CALL ZDSCAL( M, S, V( I, 1 ), LDV )
- 10 CONTINUE
- END IF
-*
- IF( LEFTV ) THEN
- DO 20 I = ILO, IHI
- S = ONE / SCALE( I )
- CALL ZDSCAL( M, S, V( I, 1 ), LDV )
- 20 CONTINUE
- END IF
-*
- END IF
-*
-* Backward permutation
-*
-* For I = ILO-1 step -1 until 1,
-* IHI+1 step 1 until N do --
-*
- 30 CONTINUE
- IF( LSAME( JOB, 'P' ) .OR. LSAME( JOB, 'B' ) ) THEN
- IF( RIGHTV ) THEN
- DO 40 II = 1, N
- I = II
- IF( I.GE.ILO .AND. I.LE.IHI )
- $ GO TO 40
- IF( I.LT.ILO )
- $ I = ILO - II
- K = SCALE( I )
- IF( K.EQ.I )
- $ GO TO 40
- CALL ZSWAP( M, V( I, 1 ), LDV, V( K, 1 ), LDV )
- 40 CONTINUE
- END IF
-*
- IF( LEFTV ) THEN
- DO 50 II = 1, N
- I = II
- IF( I.GE.ILO .AND. I.LE.IHI )
- $ GO TO 50
- IF( I.LT.ILO )
- $ I = ILO - II
- K = SCALE( I )
- IF( K.EQ.I )
- $ GO TO 50
- CALL ZSWAP( M, V( I, 1 ), LDV, V( K, 1 ), LDV )
- 50 CONTINUE
- END IF
- END IF
-*
- RETURN
-*
-* End of ZGEBAK
-*
- END