LAPACK
3.4.2
LAPACK: Linear Algebra PACKage
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Go to the source code of this file.
Functions/Subroutines | |
subroutine | clar2v (N, X, Y, Z, INCX, C, S, INCC) |
CLAR2V applies a vector of plane rotations with real cosines and complex sines from both sides to a sequence of 2-by-2 symmetric/Hermitian matrices. |
subroutine clar2v | ( | integer | N, |
complex, dimension( * ) | X, | ||
complex, dimension( * ) | Y, | ||
complex, dimension( * ) | Z, | ||
integer | INCX, | ||
real, dimension( * ) | C, | ||
complex, dimension( * ) | S, | ||
integer | INCC | ||
) |
CLAR2V applies a vector of plane rotations with real cosines and complex sines from both sides to a sequence of 2-by-2 symmetric/Hermitian matrices.
Download CLAR2V + dependencies [TGZ] [ZIP] [TXT]CLAR2V applies a vector of complex plane rotations with real cosines from both sides to a sequence of 2-by-2 complex Hermitian matrices, defined by the elements of the vectors x, y and z. For i = 1,2,...,n ( x(i) z(i) ) := ( conjg(z(i)) y(i) ) ( c(i) conjg(s(i)) ) ( x(i) z(i) ) ( c(i) -conjg(s(i)) ) ( -s(i) c(i) ) ( conjg(z(i)) y(i) ) ( s(i) c(i) )
[in] | N | N is INTEGER The number of plane rotations to be applied. |
[in,out] | X | X is COMPLEX array, dimension (1+(N-1)*INCX) The vector x; the elements of x are assumed to be real. |
[in,out] | Y | Y is COMPLEX array, dimension (1+(N-1)*INCX) The vector y; the elements of y are assumed to be real. |
[in,out] | Z | Z is COMPLEX array, dimension (1+(N-1)*INCX) The vector z. |
[in] | INCX | INCX is INTEGER The increment between elements of X, Y and Z. INCX > 0. |
[in] | C | C is REAL array, dimension (1+(N-1)*INCC) The cosines of the plane rotations. |
[in] | S | S is COMPLEX array, dimension (1+(N-1)*INCC) The sines of the plane rotations. |
[in] | INCC | INCC is INTEGER The increment between elements of C and S. INCC > 0. |
Definition at line 112 of file clar2v.f.