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author | jofret | 2009-04-28 07:17:00 +0000 |
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committer | jofret | 2009-04-28 07:17:00 +0000 |
commit | 8c8d2f518968ce7057eec6aa5cd5aec8faab861a (patch) | |
tree | 3dd1788b71d6a3ce2b73d2d475a3133580e17530 /src/lib/lapack/zgebak.f | |
parent | 9f652ffc16a310ac6641a9766c5b9e2671e0e9cb (diff) | |
download | scilab2c-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.f | 189 |
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 |