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LAPACK
3.4.1
LAPACK: Linear Algebra PACKage
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Go to the source code of this file.
Functions/Subroutines | |
subroutine | CROT (N, CX, INCX, CY, INCY, C, S) |
CROT |
subroutine CROT | ( | INTEGER | N, |
COMPLEX, dimension( * ) | CX, | ||
INTEGER | INCX, | ||
COMPLEX, dimension( * ) | CY, | ||
INTEGER | INCY, | ||
REAL | C, | ||
COMPLEX | S | ||
) |
CROT
Download CROT + dependencies [TGZ] [ZIP] [TXT]CROT applies a plane rotation, where the cos (C) is real and the sin (S) is complex, and the vectors CX and CY are complex.
[in] | N | N is INTEGER The number of elements in the vectors CX and CY. |
[in,out] | CX | CX is COMPLEX array, dimension (N) On input, the vector X. On output, CX is overwritten with C*X + S*Y. |
[in] | INCX | INCX is INTEGER The increment between successive values of CY. INCX <> 0. |
[in,out] | CY | CY is COMPLEX array, dimension (N) On input, the vector Y. On output, CY is overwritten with -CONJG(S)*X + C*Y. |
[in] | INCY | INCY is INTEGER The increment between successive values of CY. INCX <> 0. |
[in] | C | C is REAL |
[in] | S | S is COMPLEX C and S define a rotation [ C S ] [ -conjg(S) C ] where C*C + S*CONJG(S) = 1.0. |