crot.f

Section: LAPACK (3)
Updated: Tue Nov 14 2017
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NAME

crot.f  

SYNOPSIS


 

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.

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:

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 CY.  INCX <> 0.


CY

          CY is COMPLEX 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 REAL


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:

December 2016

Definition at line 105 of file crot.f.  

Author

Generated automatically by Doxygen for LAPACK from the source code.


 

Index

NAME
SYNOPSIS
Functions/Subroutines
Function/Subroutine Documentation
subroutine crot (integer N, complex, dimension( * ) CX, integer INCX, complex, dimension( * ) CY, integer INCY, real C, complex S)
Author
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