zrot.f(3) LAPACK zrot.f(3)NAMEzrot.f-
SYNOPSIS
Functions/Subroutines
subroutine zrot (N, CX, INCX, CY, INCY, C, S)
ZROT applies a plane rotation with real cosine and complex sine to
a pair of complex vectors.
Function/Subroutine Documentation
subroutine zrot (integerN, complex*16, dimension( * )CX, integerINCX,
complex*16, dimension( * )CY, integerINCY, double precisionC,
complex*16S)
ZROT applies a plane rotation with real cosine and complex sine to a
pair of complex vectors.
Purpose:
ZROT applies a plane rotation, where the cos (C) is real and the
sin (S) is complex, and the vectors CX and CY are complex.
Parameters:
N
N is INTEGER
The number of elements in the vectors CX and CY.
CX
CX is COMPLEX*16 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 CY. INCX <> 0.
CY
CY is COMPLEX*16 array, dimension (N)
On input, the vector Y.
On output, CY is overwritten with -CONJG(S)*X + C*Y.
INCY
INCY is INTEGER
The increment between successive values of CY. INCX <> 0.
C
C is DOUBLE PRECISION
S
S is COMPLEX*16
C and S define a rotation
[ C S ]
[ -conjg(S) C ]
where C*C + S*CONJG(S) = 1.0.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 104 of file zrot.f.
Author
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Version 3.4.2 Sat Nov 16 2013 zrot.f(3)
