subroutine clacrt (N, CX, INCX, CY, INCY, C, S)
CLACRT performs a linear transformation of a pair of complex vectors.
CLACRT performs a linear transformation of a pair of complex vectors.
Purpose:
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.
Parameters:
N is INTEGER
The number of elements in the vectors CX and CY.
CX
CX is COMPLEX array, dimension (N)
On input, the vector x.
On output, CX is overwritten with c*x + s*y.
INCX
INCX is INTEGER
The increment between successive values of CX. INCX <> 0.
CY
CY is COMPLEX array, dimension (N)
On input, the vector y.
On output, CY is overwritten with -s*x + c*y.
INCY
INCY is INTEGER
The increment between successive values of CY. INCY <> 0.
C
C is COMPLEX
S
S is COMPLEX
C and S define the matrix
[ C S ].
[ -S C ]
Author:
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
Definition at line 107 of file clacrt.f.
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