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Diffstat (limited to 'src/lib/blas/dger.f')
| -rw-r--r-- | src/lib/blas/dger.f | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/src/lib/blas/dger.f b/src/lib/blas/dger.f deleted file mode 100644 index d316000a..00000000 --- a/src/lib/blas/dger.f +++ /dev/null @@ -1,157 +0,0 @@ - SUBROUTINE DGER ( M, N, ALPHA, X, INCX, Y, INCY, A, LDA ) -* .. Scalar Arguments .. - DOUBLE PRECISION ALPHA - INTEGER INCX, INCY, LDA, M, N -* .. Array Arguments .. - DOUBLE PRECISION A( LDA, * ), X( * ), Y( * ) -* .. -* -* Purpose -* ======= -* -* DGER performs the rank 1 operation -* -* A := alpha*x*y' + A, -* -* where alpha is a scalar, x is an m element vector, y is an n element -* vector and A is an m by n matrix. -* -* Parameters -* ========== -* -* M - INTEGER. -* On entry, M specifies the number of rows of the matrix A. -* M must be at least zero. -* Unchanged on exit. -* -* N - INTEGER. -* On entry, N specifies the number of columns of the matrix A. -* N must be at least zero. -* Unchanged on exit. -* -* ALPHA - DOUBLE PRECISION. -* On entry, ALPHA specifies the scalar alpha. -* Unchanged on exit. -* -* X - DOUBLE PRECISION array of dimension at least -* ( 1 + ( m - 1 )*abs( INCX ) ). -* Before entry, the incremented array X must contain the m -* element vector x. -* Unchanged on exit. -* -* INCX - INTEGER. -* On entry, INCX specifies the increment for the elements of -* X. INCX must not be zero. -* Unchanged on exit. -* -* Y - DOUBLE PRECISION array of dimension at least -* ( 1 + ( n - 1 )*abs( INCY ) ). -* Before entry, the incremented array Y must contain the n -* element vector y. -* Unchanged on exit. -* -* INCY - INTEGER. -* On entry, INCY specifies the increment for the elements of -* Y. INCY must not be zero. -* Unchanged on exit. -* -* A - DOUBLE PRECISION array of DIMENSION ( LDA, n ). -* Before entry, the leading m by n part of the array A must -* contain the matrix of coefficients. On exit, A is -* overwritten by the updated matrix. -* -* LDA - INTEGER. -* On entry, LDA specifies the first dimension of A as declared -* in the calling (sub) program. LDA must be at least -* max( 1, m ). -* Unchanged on exit. -* -* -* Level 2 Blas routine. -* -* -- Written on 22-October-1986. -* Jack Dongarra, Argonne National Lab. -* Jeremy Du Croz, Nag Central Office. -* Sven Hammarling, Nag Central Office. -* Richard Hanson, Sandia National Labs. -* -* -* .. Parameters .. - DOUBLE PRECISION ZERO - PARAMETER ( ZERO = 0.0D+0 ) -* .. Local Scalars .. - DOUBLE PRECISION TEMP - INTEGER I, INFO, IX, J, JY, KX -* .. External Subroutines .. - EXTERNAL XERBLA -* .. Intrinsic Functions .. - INTRINSIC MAX -* .. -* .. Executable Statements .. -* -* Test the input parameters. -* - INFO = 0 - IF ( M.LT.0 )THEN - INFO = 1 - ELSE IF( N.LT.0 )THEN - INFO = 2 - ELSE IF( INCX.EQ.0 )THEN - INFO = 5 - ELSE IF( INCY.EQ.0 )THEN - INFO = 7 - ELSE IF( LDA.LT.MAX( 1, M ) )THEN - INFO = 9 - END IF - IF( INFO.NE.0 )THEN - CALL XERBLA( 'DGER ', INFO ) - RETURN - END IF -* -* Quick return if possible. -* - IF( ( M.EQ.0 ).OR.( N.EQ.0 ).OR.( ALPHA.EQ.ZERO ) ) - $ RETURN -* -* Start the operations. In this version the elements of A are -* accessed sequentially with one pass through A. -* - IF( INCY.GT.0 )THEN - JY = 1 - ELSE - JY = 1 - ( N - 1 )*INCY - END IF - IF( INCX.EQ.1 )THEN - DO 20, J = 1, N - IF( Y( JY ).NE.ZERO )THEN - TEMP = ALPHA*Y( JY ) - DO 10, I = 1, M - A( I, J ) = A( I, J ) + X( I )*TEMP - 10 CONTINUE - END IF - JY = JY + INCY - 20 CONTINUE - ELSE - IF( INCX.GT.0 )THEN - KX = 1 - ELSE - KX = 1 - ( M - 1 )*INCX - END IF - DO 40, J = 1, N - IF( Y( JY ).NE.ZERO )THEN - TEMP = ALPHA*Y( JY ) - IX = KX - DO 30, I = 1, M - A( I, J ) = A( I, J ) + X( IX )*TEMP - IX = IX + INCX - 30 CONTINUE - END IF - JY = JY + INCY - 40 CONTINUE - END IF -* - RETURN -* -* End of DGER . -* - END |