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Diffstat (limited to 'src/lib/lapack/zunm2r.f')
| -rw-r--r-- | src/lib/lapack/zunm2r.f | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/src/lib/lapack/zunm2r.f b/src/lib/lapack/zunm2r.f deleted file mode 100644 index 7d4c067a..00000000 --- a/src/lib/lapack/zunm2r.f +++ /dev/null @@ -1,201 +0,0 @@ - SUBROUTINE ZUNM2R( SIDE, TRANS, M, N, K, A, LDA, TAU, C, LDC, - $ WORK, INFO ) -* -* -- LAPACK routine (version 3.1) -- -* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. -* November 2006 -* -* .. Scalar Arguments .. - CHARACTER SIDE, TRANS - INTEGER INFO, K, LDA, LDC, M, N -* .. -* .. Array Arguments .. - COMPLEX*16 A( LDA, * ), C( LDC, * ), TAU( * ), WORK( * ) -* .. -* -* Purpose -* ======= -* -* ZUNM2R overwrites the general complex m-by-n matrix C with -* -* Q * C if SIDE = 'L' and TRANS = 'N', or -* -* Q'* C if SIDE = 'L' and TRANS = 'C', or -* -* C * Q if SIDE = 'R' and TRANS = 'N', or -* -* C * Q' if SIDE = 'R' and TRANS = 'C', -* -* where Q is a complex unitary matrix defined as the product of k -* elementary reflectors -* -* Q = H(1) H(2) . . . H(k) -* -* as returned by ZGEQRF. Q is of order m if SIDE = 'L' and of order n -* if SIDE = 'R'. -* -* Arguments -* ========= -* -* SIDE (input) CHARACTER*1 -* = 'L': apply Q or Q' from the Left -* = 'R': apply Q or Q' from the Right -* -* TRANS (input) CHARACTER*1 -* = 'N': apply Q (No transpose) -* = 'C': apply Q' (Conjugate transpose) -* -* M (input) INTEGER -* The number of rows of the matrix C. M >= 0. -* -* N (input) INTEGER -* The number of columns of the matrix C. N >= 0. -* -* K (input) INTEGER -* The number of elementary reflectors whose product defines -* the matrix Q. -* If SIDE = 'L', M >= K >= 0; -* if SIDE = 'R', N >= K >= 0. -* -* A (input) COMPLEX*16 array, dimension (LDA,K) -* The i-th column must contain the vector which defines the -* elementary reflector H(i), for i = 1,2,...,k, as returned by -* ZGEQRF in the first k columns of its array argument A. -* A is modified by the routine but restored on exit. -* -* LDA (input) INTEGER -* The leading dimension of the array A. -* If SIDE = 'L', LDA >= max(1,M); -* if SIDE = 'R', LDA >= max(1,N). -* -* TAU (input) COMPLEX*16 array, dimension (K) -* TAU(i) must contain the scalar factor of the elementary -* reflector H(i), as returned by ZGEQRF. -* -* C (input/output) COMPLEX*16 array, dimension (LDC,N) -* On entry, the m-by-n matrix C. -* On exit, C is overwritten by Q*C or Q'*C or C*Q' or C*Q. -* -* LDC (input) INTEGER -* The leading dimension of the array C. LDC >= max(1,M). -* -* WORK (workspace) COMPLEX*16 array, dimension -* (N) if SIDE = 'L', -* (M) if SIDE = 'R' -* -* INFO (output) INTEGER -* = 0: successful exit -* < 0: if INFO = -i, the i-th argument had an illegal value -* -* ===================================================================== -* -* .. Parameters .. - COMPLEX*16 ONE - PARAMETER ( ONE = ( 1.0D+0, 0.0D+0 ) ) -* .. -* .. Local Scalars .. - LOGICAL LEFT, NOTRAN - INTEGER I, I1, I2, I3, IC, JC, MI, NI, NQ - COMPLEX*16 AII, TAUI -* .. -* .. External Functions .. - LOGICAL LSAME - EXTERNAL LSAME -* .. -* .. External Subroutines .. - EXTERNAL XERBLA, ZLARF -* .. -* .. Intrinsic Functions .. - INTRINSIC DCONJG, MAX -* .. -* .. Executable Statements .. -* -* Test the input arguments -* - INFO = 0 - LEFT = LSAME( SIDE, 'L' ) - NOTRAN = LSAME( TRANS, 'N' ) -* -* NQ is the order of Q -* - IF( LEFT ) THEN - NQ = M - ELSE - NQ = N - END IF - IF( .NOT.LEFT .AND. .NOT.LSAME( SIDE, 'R' ) ) THEN - INFO = -1 - ELSE IF( .NOT.NOTRAN .AND. .NOT.LSAME( TRANS, 'C' ) ) THEN - INFO = -2 - ELSE IF( M.LT.0 ) THEN - INFO = -3 - ELSE IF( N.LT.0 ) THEN - INFO = -4 - ELSE IF( K.LT.0 .OR. K.GT.NQ ) THEN - INFO = -5 - ELSE IF( LDA.LT.MAX( 1, NQ ) ) THEN - INFO = -7 - ELSE IF( LDC.LT.MAX( 1, M ) ) THEN - INFO = -10 - END IF - IF( INFO.NE.0 ) THEN - CALL XERBLA( 'ZUNM2R', -INFO ) - RETURN - END IF -* -* Quick return if possible -* - IF( M.EQ.0 .OR. N.EQ.0 .OR. K.EQ.0 ) - $ RETURN -* - IF( ( LEFT .AND. .NOT.NOTRAN .OR. .NOT.LEFT .AND. NOTRAN ) ) THEN - I1 = 1 - I2 = K - I3 = 1 - ELSE - I1 = K - I2 = 1 - I3 = -1 - END IF -* - IF( LEFT ) THEN - NI = N - JC = 1 - ELSE - MI = M - IC = 1 - END IF -* - DO 10 I = I1, I2, I3 - IF( LEFT ) THEN -* -* H(i) or H(i)' is applied to C(i:m,1:n) -* - MI = M - I + 1 - IC = I - ELSE -* -* H(i) or H(i)' is applied to C(1:m,i:n) -* - NI = N - I + 1 - JC = I - END IF -* -* Apply H(i) or H(i)' -* - IF( NOTRAN ) THEN - TAUI = TAU( I ) - ELSE - TAUI = DCONJG( TAU( I ) ) - END IF - AII = A( I, I ) - A( I, I ) = ONE - CALL ZLARF( SIDE, MI, NI, A( I, I ), 1, TAUI, C( IC, JC ), LDC, - $ WORK ) - A( I, I ) = AII - 10 CONTINUE - RETURN -* -* End of ZUNM2R -* - END |