LAPACK 3.12.0 LAPACK: Linear Algebra PACKage
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1*> \brief \b CLADIV 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
11*> [TGZ]</a>
13*> [ZIP]</a>
15*> [TXT]</a>
16*> \endhtmlonly
17*
18* Definition:
19* ===========
20*
21* COMPLEX FUNCTION CLADIV( X, Y )
22*
23* .. Scalar Arguments ..
24* COMPLEX X, Y
25* ..
26*
27*
28*> \par Purpose:
29* =============
30*>
31*> \verbatim
32*>
33*> CLADIV := 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
44*> \endverbatim
45*>
46*> \param[in] Y
47*> \verbatim
48*> Y is COMPLEX
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*
61*
62* =====================================================================
63 COMPLEX FUNCTION cladiv( 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 x, y
71* ..
72*
73* =====================================================================
74*
75* .. Local Scalars ..
76 REAL zi, zr
77* ..
78* .. External Subroutines ..
80* ..
81* .. Intrinsic Functions ..
82 INTRINSIC aimag, cmplx, real
83* ..
84* .. Executable Statements ..
85*
86 CALL sladiv( real( x ), aimag( x ), real( y ), aimag( y ), zr,
87 \$ zi )
88 cladiv = cmplx( zr, zi )
89*
90 RETURN
91*