DragonFly On-Line Manual Pages

crot.f(3)                           LAPACK                           crot.f(3)

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 (integerN, complex, dimension( * )CX, integerINCX, complex,
       dimension( * )CY, integerINCY, realC, complexS)
       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:
           September 2012

       Definition at line 104 of file crot.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2                   Sat Nov 16 2013                      crot.f(3)