clacrt-f(3)

clacrt.f –

Synopsis

Functions/Subroutines

subroutine clacrt (N, CX, INCX, CY, INCY, C, S)
CLACRT performs a linear transformation of a pair of complex vectors.

Function/Subroutine Documentation

subroutine clacrt (integerN, complex, dimension( * )CX, integerINCX, complex, dimension( * )CY, integerINCY, complexC, complexS)

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

 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 Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Date:

September 2012

Definition at line 106 of file clacrt.f.

Author

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