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Annotation of rpl/lapack/lapack/zladiv.f, revision 1.18

1.11      bertrand    1: *> \brief \b ZLADIV performs complex division in real arithmetic, avoiding unnecessary overflow.
1.8       bertrand    2: *
                      3: *  =========== DOCUMENTATION ===========
                      4: *
1.15      bertrand    5: * Online html documentation available at
                      6: *            http://www.netlib.org/lapack/explore-html/
1.8       bertrand    7: *
                      8: *> \htmlonly
1.15      bertrand    9: *> Download ZLADIV + dependencies
                     10: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/zladiv.f">
                     11: *> [TGZ]</a>
                     12: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/zladiv.f">
                     13: *> [ZIP]</a>
                     14: *> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/zladiv.f">
1.8       bertrand   15: *> [TXT]</a>
1.15      bertrand   16: *> \endhtmlonly
1.8       bertrand   17: *
                     18: *  Definition:
                     19: *  ===========
                     20: *
                     21: *       COMPLEX*16     FUNCTION ZLADIV( X, Y )
1.15      bertrand   22: *
1.8       bertrand   23: *       .. Scalar Arguments ..
                     24: *       COMPLEX*16         X, Y
                     25: *       ..
1.15      bertrand   26: *
1.8       bertrand   27: *
                     28: *> \par Purpose:
                     29: *  =============
                     30: *>
                     31: *> \verbatim
                     32: *>
                     33: *> ZLADIV := X / Y, where X and Y are complex.  The computation of X / Y
                     34: *> will not overflow on an intermediary step unless the results
                     35: *> overflows.
                     36: *> \endverbatim
                     37: *
                     38: *  Arguments:
                     39: *  ==========
                     40: *
                     41: *> \param[in] X
                     42: *> \verbatim
                     43: *>          X is COMPLEX*16
                     44: *> \endverbatim
                     45: *>
                     46: *> \param[in] Y
                     47: *> \verbatim
                     48: *>          Y is COMPLEX*16
                     49: *>          The complex scalars X and Y.
                     50: *> \endverbatim
                     51: *
                     52: *  Authors:
                     53: *  ========
                     54: *
1.15      bertrand   55: *> \author Univ. of Tennessee
                     56: *> \author Univ. of California Berkeley
                     57: *> \author Univ. of Colorado Denver
                     58: *> \author NAG Ltd.
1.8       bertrand   59: *
                     60: *> \ingroup complex16OTHERauxiliary
                     61: *
                     62: *  =====================================================================
1.1       bertrand   63:       COMPLEX*16     FUNCTION ZLADIV( X, Y )
                     64: *
1.18    ! bertrand   65: *  -- LAPACK auxiliary routine --
1.1       bertrand   66: *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
                     67: *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
                     68: *
                     69: *     .. Scalar Arguments ..
                     70:       COMPLEX*16         X, Y
                     71: *     ..
                     72: *
                     73: *  =====================================================================
                     74: *
                     75: *     .. Local Scalars ..
                     76:       DOUBLE PRECISION   ZI, ZR
                     77: *     ..
                     78: *     .. External Subroutines ..
                     79:       EXTERNAL           DLADIV
                     80: *     ..
                     81: *     .. Intrinsic Functions ..
                     82:       INTRINSIC          DBLE, DCMPLX, DIMAG
                     83: *     ..
                     84: *     .. Executable Statements ..
                     85: *
                     86:       CALL DLADIV( DBLE( X ), DIMAG( X ), DBLE( Y ), DIMAG( Y ), ZR,
                     87:      $             ZI )
                     88:       ZLADIV = DCMPLX( ZR, ZI )
                     89: *
                     90:       RETURN
                     91: *
                     92: *     End of ZLADIV
                     93: *
                     94:       END