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[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / lapack / internal / testdata / netlib / dlacpy.f

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+*> \brief \b DLACPY copies all or part of one two-dimensional array to another.
+*
+*  =========== DOCUMENTATION ===========
+*
+* Online html documentation available at 
+*            http://www.netlib.org/lapack/explore-html/ 
+*
+*> \htmlonly
+*> Download DLACPY + dependencies 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlacpy.f"> 
+*> [TGZ]</a> 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlacpy.f"> 
+*> [ZIP]</a> 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlacpy.f"> 
+*> [TXT]</a>
+*> \endhtmlonly 
+*
+*  Definition:
+*  ===========
+*
+*       SUBROUTINE DLACPY( UPLO, M, N, A, LDA, B, LDB )
+* 
+*       .. Scalar Arguments ..
+*       CHARACTER          UPLO
+*       INTEGER            LDA, LDB, M, N
+*       ..
+*       .. Array Arguments ..
+*       DOUBLE PRECISION   A( LDA, * ), B( LDB, * )
+*       ..
+*  
+*
+*> \par Purpose:
+*  =============
+*>
+*> \verbatim
+*>
+*> DLACPY copies all or part of a two-dimensional matrix A to another
+*> matrix B.
+*> \endverbatim
+*
+*  Arguments:
+*  ==========
+*
+*> \param[in] UPLO
+*> \verbatim
+*>          UPLO is CHARACTER*1
+*>          Specifies the part of the matrix A to be copied to B.
+*>          = 'U':      Upper triangular part
+*>          = 'L':      Lower triangular part
+*>          Otherwise:  All of the matrix A
+*> \endverbatim
+*>
+*> \param[in] M
+*> \verbatim
+*>          M is INTEGER
+*>          The number of rows of the matrix A.  M >= 0.
+*> \endverbatim
+*>
+*> \param[in] N
+*> \verbatim
+*>          N is INTEGER
+*>          The number of columns of the matrix A.  N >= 0.
+*> \endverbatim
+*>
+*> \param[in] A
+*> \verbatim
+*>          A is DOUBLE PRECISION array, dimension (LDA,N)
+*>          The m by n matrix A.  If UPLO = 'U', only the upper triangle
+*>          or trapezoid is accessed; if UPLO = 'L', only the lower
+*>          triangle or trapezoid is accessed.
+*> \endverbatim
+*>
+*> \param[in] LDA
+*> \verbatim
+*>          LDA is INTEGER
+*>          The leading dimension of the array A.  LDA >= max(1,M).
+*> \endverbatim
+*>
+*> \param[out] B
+*> \verbatim
+*>          B is DOUBLE PRECISION array, dimension (LDB,N)
+*>          On exit, B = A in the locations specified by UPLO.
+*> \endverbatim
+*>
+*> \param[in] LDB
+*> \verbatim
+*>          LDB is INTEGER
+*>          The leading dimension of the array B.  LDB >= max(1,M).
+*> \endverbatim
+*
+*  Authors:
+*  ========
+*
+*> \author Univ. of Tennessee 
+*> \author Univ. of California Berkeley 
+*> \author Univ. of Colorado Denver 
+*> \author NAG Ltd. 
+*
+*> \date September 2012
+*
+*> \ingroup auxOTHERauxiliary
+*
+*  =====================================================================
+      SUBROUTINE DLACPY( UPLO, M, N, A, LDA, B, LDB )
+*
+*  -- LAPACK auxiliary routine (version 3.4.2) --
+*  -- LAPACK is a software package provided by Univ. of Tennessee,    --
+*  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
+*     September 2012
+*
+*     .. Scalar Arguments ..
+      CHARACTER          UPLO
+      INTEGER            LDA, LDB, M, N
+*     ..
+*     .. Array Arguments ..
+      DOUBLE PRECISION   A( LDA, * ), B( LDB, * )
+*     ..
+*
+*  =====================================================================
+*
+*     .. Local Scalars ..
+      INTEGER            I, J
+*     ..
+*     .. External Functions ..
+      LOGICAL            LSAME
+      EXTERNAL           LSAME
+*     ..
+*     .. Intrinsic Functions ..
+      INTRINSIC          MIN
+*     ..
+*     .. Executable Statements ..
+*
+      IF( LSAME( UPLO, 'U' ) ) THEN
+         DO 20 J = 1, N
+            DO 10 I = 1, MIN( J, M )
+               B( I, J ) = A( I, J )
+   10       CONTINUE
+   20    CONTINUE
+      ELSE IF( LSAME( UPLO, 'L' ) ) THEN
+         DO 40 J = 1, N
+            DO 30 I = J, M
+               B( I, J ) = A( I, J )
+   30       CONTINUE
+   40    CONTINUE
+      ELSE
+         DO 60 J = 1, N
+            DO 50 I = 1, M
+               B( I, J ) = A( I, J )
+   50       CONTINUE
+   60    CONTINUE
+      END IF
+      RETURN
+*
+*     End of DLACPY
+*
+      END