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NAME DLARGV - generate a vector of real plane rotations, deter- mined by elements of the real vectors x and y SYNOPSIS SUBROUTINE DLARGV( N, X, INCX, Y, INCY, C, INCC ) INTEGER INCC, INCX, INCY, N DOUBLE PRECISION C( * ), X( * ), Y( * ) PURPOSE DLARGV generates a vector of real plane rotations, deter- mined by elements of the real vectors x and y. For i = 1,2,...,n ( c(i) s(i) ) ( x(i) ) = ( a(i) ) ( -s(i) c(i) ) ( y(i) ) = ( 0 ) ARGUMENTS N (input) INTEGER The number of plane rotations to be generated. X (input/output) DOUBLE PRECISION array, dimension (1+(N-1)*INCX) On entry, the vector x. On exit, x(i) is overwritten by a(i), for i = 1,...,n. INCX (input) INTEGER The increment between elements of X. INCX > 0. Y (input/output) DOUBLE PRECISION 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.