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dlartv

 NAME
      DLARTV - apply a vector of real plane rotations to elements
      of the real vectors x and y

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

          INTEGER        INCC, INCX, INCY, N

          DOUBLE         PRECISION C( * ), S( * ), X( * ), Y( * )

 PURPOSE
      DLARTV applies a vector of real plane rotations to elements
      of the real vectors x and y. For i = 1,2,...,n

         ( x(i) ) := (  c(i)  s(i) ) ( x(i) )
         ( y(i) )    ( -s(i)  c(i) ) ( y(i) )

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

      X       (input/output) DOUBLE PRECISION array,
              dimension (1+(N-1)*INCX) The vector x.

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

      Y       (input/output) DOUBLE PRECISION array,
              dimension (1+(N-1)*INCY) The vector y.

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

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

      S       (input) DOUBLE PRECISION array, dimension (1+(N-
              1)*INCC)
              The sines of the plane rotations.

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