LAPACK  3.4.2
LAPACK: Linear Algebra PACKage
 All Files Functions Groups
Functions/Subroutines
crot.f File Reference

Go to the source code of this file.

Functions/Subroutines

subroutine crot (N, CX, INCX, CY, INCY, C, S)
 CROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.

Function/Subroutine Documentation

subroutine crot ( integer  N,
complex, dimension( * )  CX,
integer  INCX,
complex, dimension( * )  CY,
integer  INCY,
real  C,
complex  S 
)

CROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.

Download CROT + dependencies [TGZ] [ZIP] [TXT]
Purpose: 
 CROT   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:
[in]N
          N is INTEGER
          The number of elements in the vectors CX and CY.
[in,out]CX
          CX is COMPLEX array, dimension (N)
          On input, the vector X.
          On output, CX is overwritten with C*X + S*Y.
[in]INCX
          INCX is INTEGER
          The increment between successive values of CY.  INCX <> 0.
[in,out]CY
          CY is COMPLEX array, dimension (N)
          On input, the vector Y.
          On output, CY is overwritten with -CONJG(S)*X + C*Y.
[in]INCY
          INCY is INTEGER
          The increment between successive values of CY.  INCX <> 0.
[in]C
          C is REAL
[in]S
          S is COMPLEX
          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 crot.f.

Here is the caller graph for this function: