LAPACK
3.6.1
LAPACK: Linear Algebra PACKage
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subroutine dlargv | ( | integer | N, |
double precision, dimension( * ) | X, | ||
integer | INCX, | ||
double precision, dimension( * ) | Y, | ||
integer | INCY, | ||
double precision, dimension( * ) | C, | ||
integer | INCC | ||
) |
DLARGV generates a vector of plane rotations with real cosines and real sines.
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DLARGV generates a vector of real plane rotations, determined 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 )
[in] | N | N is INTEGER The number of plane rotations to be generated. |
[in,out] | X | X is 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. |
[in] | INCX | INCX is INTEGER The increment between elements of X. INCX > 0. |
[in,out] | Y | Y is DOUBLE PRECISION array, dimension (1+(N-1)*INCY) On entry, the vector y. On exit, the sines of the plane rotations. |
[in] | INCY | INCY is INTEGER The increment between elements of Y. INCY > 0. |
[out] | C | C is DOUBLE PRECISION array, dimension (1+(N-1)*INCC) The cosines of the plane rotations. |
[in] | INCC | INCC is INTEGER The increment between elements of C. INCC > 0. |
Definition at line 106 of file dlargv.f.