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zlargv

 NAME
      ZLARGV - generate a vector of complex plane rotations with
      real cosines, determined by elements of the complex vectors
      x and y

 SYNOPSIS
      SUBROUTINE ZLARGV( N, X, INCX, Y, INCY, C, INCC )

          INTEGER        INCC, INCX, INCY, N

          DOUBLE         PRECISION C( * )

          COMPLEX*16     X( * ), Y( * )

 PURPOSE
      ZLARGV generates a vector of complex plane rotations with
      real cosines, determined by elements of the complex vectors
      x and y.  For i = 1,2,...,n

         (        c(i)   s(i) ) ( x(i) ) = ( a(i) )
         ( -conjg(s(i))  c(i) ) ( y(i) ) = (   0  )

 ARGUMENTS
      N       (input) INTEGER
              The number of plane rotations to be generated.

      X       (input/output) COMPLEX*16 array, dimension (1+(N-
              1)*INCX)
              On entry, the vector x.  On exit, x(i) is overwrit-
              ten by a(i), for i = 1,...,n.

      INCX    (input) INTEGER
              The increment between elements of X. INCX > 0.

      Y       (input/output) COMPLEX*16 array, dimension (1+(N-
              1)*INCY)
              On entry, the vector y.  On exit, the sines of the
              plane rotations.

      INCY    (input) INTEGER
              The increment between elements of Y. INCY > 0.

      C       (output) DOUBLE PRECISION array, dimension (1+(N-
              1)*INCC)
              The cosines of the plane rotations.

      INCC    (input) INTEGER
              The increment between elements of C. INCC > 0.