clacrt (3) - Linux Manuals

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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