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    1: *> \brief \b ZLADIV performs complex division in real arithmetic, avoiding unnecessary overflow.
    2: *
    3: *  =========== DOCUMENTATION ===========
    4: *
    5: * Online html documentation available at
    6: *            http://www.netlib.org/lapack/explore-html/
    7: *
    8: *> \htmlonly
    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">
   15: *> [TXT]</a>
   16: *> \endhtmlonly
   17: *
   18: *  Definition:
   19: *  ===========
   20: *
   21: *       COMPLEX*16     FUNCTION ZLADIV( X, Y )
   22: *
   23: *       .. Scalar Arguments ..
   24: *       COMPLEX*16         X, Y
   25: *       ..
   26: *
   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: *
   55: *> \author Univ. of Tennessee
   56: *> \author Univ. of California Berkeley
   57: *> \author Univ. of Colorado Denver
   58: *> \author NAG Ltd.
   59: *
   60: *> \ingroup complex16OTHERauxiliary
   61: *
   62: *  =====================================================================
   63:       COMPLEX*16     FUNCTION ZLADIV( X, Y )
   64: *
   65: *  -- LAPACK auxiliary routine --
   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