complex_blas_level1(3)

NAME
complex_blas_level1 - complex

SYNOPSIS

  Functions
subroutine caxpy (n, ca, cx, incx, cy, incy)
CAXPY
subroutine ccopy (n, cx, incx, cy, incy)
CCOPY
complex function cdotc (n, cx, incx, cy, incy)
CDOTC
complex function cdotu (n, cx, incx, cy, incy)
CDOTU
subroutine cscal (n, ca, cx, incx)
CSCAL
subroutine csrot (n, cx, incx, cy, incy, c, s)
CSROT
subroutine csscal (n, sa, cx, incx)
CSSCAL
subroutine cswap (n, cx, incx, cy, incy)
CSWAP

Detailed Description

This is the group of complex LEVEL 1 BLAS routines.

Function Documentation

  subroutine caxpy (integer n, complex ca, complex, dimension(*) cx, integer incx, complex, dimension(*) cy, integer incy)

CAXPY

Purpose:

        CAXPY constant times a vector plus a vector.

Parameters
    N

              N is INTEGER
             number of elements in input vector(s)

    CA

              CA is COMPLEX
               On entry, CA specifies the scalar alpha.

    CX

              CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

    INCX

              INCX is INTEGER
             storage spacing between elements of CX

    CY

              CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

    INCY

              INCY is INTEGER
             storage spacing between elements of CY

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

         jack dongarra, linpack, 3/11/78.
         modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 87 of file caxpy.f.

  subroutine ccopy (integer n, complex, dimension(*) cx, integer incx, complex, dimension(*) cy, integer incy)

CCOPY

Purpose:

        CCOPY copies a vector x to a vector y.

Parameters
    N

              N is INTEGER
             number of elements in input vector(s)

    CX

              CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

    INCX

              INCX is INTEGER
             storage spacing between elements of CX

    CY

              CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

    INCY

              INCY is INTEGER
             storage spacing between elements of CY

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

         jack dongarra, linpack, 3/11/78.
         modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 80 of file ccopy.f.

  complex function cdotc (integer n, complex, dimension(*) cx, integer incx, complex, dimension(*) cy, integer incy)

CDOTC

Purpose:

     CDOTC forms the dot product of two complex vectors
          CDOTC = X^H * Y

Parameters
    N

              N is INTEGER
             number of elements in input vector(s)

    CX

              CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

    INCX

              INCX is INTEGER
             storage spacing between elements of CX

    CY

              CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

    INCY

              INCY is INTEGER
             storage spacing between elements of CY

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

         jack dongarra, linpack,  3/11/78.
         modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 82 of file cdotc.f.

  complex function cdotu (integer n, complex, dimension(*) cx, integer incx, complex, dimension(*) cy, integer incy)

CDOTU

Purpose:

     CDOTU forms the dot product of two complex vectors
          CDOTU = X^T * Y

Parameters
    N

              N is INTEGER
             number of elements in input vector(s)

    CX

              CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

    INCX

              INCX is INTEGER
             storage spacing between elements of CX

    CY

              CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

    INCY

              INCY is INTEGER
             storage spacing between elements of CY

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

         jack dongarra, linpack, 3/11/78.
         modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 82 of file cdotu.f.

  subroutine cscal (integer n, complex ca, complex, dimension(*) cx, integer incx)

CSCAL

Purpose:

        CSCAL scales a vector by a constant.

Parameters
    N

              N is INTEGER
             number of elements in input vector(s)

    CA

              CA is COMPLEX
               On entry, CA specifies the scalar alpha.

    CX

              CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

    INCX

              INCX is INTEGER
             storage spacing between elements of CX

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

         jack dongarra, linpack,  3/11/78.
         modified 3/93 to return if incx .le. 0.
         modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 77 of file cscal.f.

  subroutine csrot (integer n, complex, dimension( * ) cx, integer incx, complex, dimension( * ) cy, integer incy, real c, real s)

CSROT

Purpose:

     CSROT applies a plane rotation, where the cos and sin (c and s) are real
     and the vectors cx and cy are complex.
     jack dongarra, linpack, 3/11/78.

Parameters
    N

              N is INTEGER
               On entry, N specifies the order of the vectors cx and cy.
               N must be at least zero.

    CX

              CX is COMPLEX array, dimension at least
               ( 1 + ( N - 1 )*abs( INCX ) ).
               Before entry, the incremented array CX must contain the n
               element vector cx. On exit, CX is overwritten by the updated
               vector cx.

    INCX

              INCX is INTEGER
               On entry, INCX specifies the increment for the elements of
               CX. INCX must not be zero.

    CY

              CY is COMPLEX array, dimension at least
               ( 1 + ( N - 1 )*abs( INCY ) ).
               Before entry, the incremented array CY must contain the n
               element vector cy. On exit, CY is overwritten by the updated
               vector cy.

    INCY

              INCY is INTEGER
               On entry, INCY specifies the increment for the elements of
               CY. INCY must not be zero.

    C

              C is REAL
               On entry, C specifies the cosine, cos.

    S

              S is REAL
               On entry, S specifies the sine, sin.

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 97 of file csrot.f.

  subroutine csscal (integer n, real sa, complex, dimension(*) cx, integer incx)

CSSCAL

Purpose:

        CSSCAL scales a complex vector by a real constant.

Parameters
    N

              N is INTEGER
             number of elements in input vector(s)

    SA

              SA is REAL
               On entry, SA specifies the scalar alpha.

    CX

              CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

    INCX

              INCX is INTEGER
             storage spacing between elements of CX

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

         jack dongarra, linpack, 3/11/78.
         modified 3/93 to return if incx .le. 0.
         modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 77 of file csscal.f.

  subroutine cswap (integer n, complex, dimension(*) cx, integer incx, complex, dimension(*) cy, integer incy)

CSWAP

Purpose:

       CSWAP interchanges two vectors.

Parameters
    N

              N is INTEGER
             number of elements in input vector(s)

    CX

              CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

    INCX

              INCX is INTEGER
             storage spacing between elements of CX

    CY

              CY is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

    INCY

              INCY is INTEGER
             storage spacing between elements of CY

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

         jack dongarra, linpack, 3/11/78.
         modified 12/3/93, array(1) declarations changed to array(*)

Definition at line 80 of file cswap.f.

Author

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