LAPACK
3.4.2
LAPACK: Linear Algebra PACKage

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Functions/Subroutines  
subroutine  clacrt (N, CX, INCX, CY, INCY, C, S) 
CLACRT performs a linear transformation of a pair of complex vectors. 
subroutine clacrt  (  integer  N, 
complex, dimension( * )  CX,  
integer  INCX,  
complex, dimension( * )  CY,  
integer  INCY,  
complex  C,  
complex  S  
) 
CLACRT performs a linear transformation of a pair of complex vectors.
Download CLACRT + dependencies [TGZ] [ZIP] [TXT]CLACRT performs the operation ( c s )( x ) ==> ( x ) ( s c )( y ) ( y ) where c and s are complex and the vectors x and y 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 CX. INCX <> 0. 
[in,out]  CY  CY is COMPLEX array, dimension (N) On input, the vector y. On output, CY is overwritten with s*x + c*y. 
[in]  INCY  INCY is INTEGER The increment between successive values of CY. INCY <> 0. 
[in]  C  C is COMPLEX 
[in]  S  S is COMPLEX C and S define the matrix [ C S ]. [ S C ] 