Scroll to navigation

zrot.f(3) LAPACK zrot.f(3)

NAME

zrot.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

Generated automatically by Doxygen for LAPACK from the source code.
Wed Oct 15 2014 Version 3.4.2