axpy - Man Page

subroutine caxpy (n, ca, cx, incx, cy, incy)
CAXPY
subroutine daxpy (n, da, dx, incx, dy, incy)
DAXPY
subroutine saxpy (n, sa, sx, incx, sy, incy)
SAXPY
subroutine zaxpy (n, za, zx, incx, zy, incy)
ZAXPY

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.

DAXPY

Purpose:

    DAXPY constant times a vector plus a vector.
    uses unrolled loops for increments equal to one.

Parameters

N

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

DA

          DA is DOUBLE PRECISION
           On entry, DA specifies the scalar alpha.

DX

          DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

          INCX is INTEGER
         storage spacing between elements of DX

DY

          DY is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY

          INCY is INTEGER
         storage spacing between elements of DY

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 88 of file daxpy.f.

SAXPY

Purpose:

    SAXPY constant times a vector plus a vector.
    uses unrolled loops for increments equal to one.

Parameters

N

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

SA

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

SX

          SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

          INCX is INTEGER
         storage spacing between elements of SX

SY

          SY is REAL array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY

          INCY is INTEGER
         storage spacing between elements of SY

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 88 of file saxpy.f.

ZAXPY

Purpose:

    ZAXPY constant times a vector plus a vector.

Parameters

N

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

ZA

          ZA is COMPLEX*16
           On entry, ZA specifies the scalar alpha.

ZX

          ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) )

INCX

          INCX is INTEGER
         storage spacing between elements of ZX

ZY

          ZY is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCY ) )

INCY

          INCY is INTEGER
         storage spacing between elements of ZY

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

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

Definition at line 87 of file zaxpy.f.