1ZDROT(1)                         BLAS routine                         ZDROT(1)
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NAME

6       ZDROT  -  plane  rotation, where the cos and sin (c and s) are real and
7       the vectors cx and cy are complex
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SYNOPSIS

10       SUBROUTINE ZDROT( N, CX, INCX, CY, INCY, C, S )
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12           INTEGER       INCX, INCY, N
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14           DOUBLE        PRECISION C, S
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16           COMPLEX*16    CX( * ), CY( * )
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PURPOSE

19       Applies a plane rotation, where the cos and sin (c and s) are real  and
20       the vectors cx and cy are complex.  jack dongarra, linpack, 3/11/78.
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ARGUMENTS

24       N        (input) INTEGER
25                On  entry,  N specifies the order of the vectors cx and cy.  N
26                must be at least zero.  Unchanged on exit.
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28       CX       (input) COMPLEX*16 array, dimension at least
29                ( 1 + ( N - 1 )*abs( INCX ) ).  Before entry, the  incremented
30                array  CX must contain the n element vector cx. On exit, CX is
31                overwritten by the updated vector cx.
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33       INCX     (input) INTEGER
34                On entry, INCX specifies the increment for the elements of CX.
35                INCX must not be zero.  Unchanged on exit.
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37       CY       (input) COMPLEX*16 array, dimension at least
38                (  1 + ( N - 1 )*abs( INCY ) ).  Before entry, the incremented
39                array CY must contain the n element vector cy. On exit, CY  is
40                overwritten by the updated vector cy.
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42       INCY     (input) INTEGER
43                On entry, INCY specifies the increment for the elements of CY.
44                INCY must not be zero.  Unchanged on exit.
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46       C        (input) DOUBLE PRECISION
47                On entry, C specifies the cosine, cos.  Unchanged on exit.
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49       S        (input) DOUBLE PRECISION
50                On entry, S specifies the sine, sin.  Unchanged on exit.
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54BLAS routine                     February 2007                        ZDROT(1)