Man page - axpy(3)

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Manual

axpy

NAME
SYNOPSIS
Functions
Detailed Description
Function Documentation
subroutine caxpy (integer n, complex ca, complex, dimension(*) cx, integerincx, complex, dimension(*) cy, integer incy)
subroutine daxpy (integer n, double precision da, double precision,dimension(*) dx, integer incx, double precision, dimension(*) dy,integer incy)
subroutine saxpy (integer n, real sa, real, dimension(*) sx, integer incx,real, dimension(*) sy, integer incy)
subroutine zaxpy (integer n, complex*16 za, complex*16, dimension(*) zx,integer incx, complex*16, dimension(*) zy, integer incy)
Author

NAME

axpy - axpy: y = ax + y

SYNOPSIS

Functions

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

Detailed Description

Function Documentation

subroutine caxpy (integer n, complex ca, complex, dimension(*) cx, integerincx, 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(*)

subroutine daxpy (integer n, double precision da, double precision,dimension(*) dx, integer incx, double precision, dimension(*) dy,integer incy)

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(*)

subroutine saxpy (integer n, real sa, real, dimension(*) sx, integer incx,real, dimension(*) sy, integer incy)

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(*)

subroutine zaxpy (integer n, complex*16 za, complex*16, dimension(*) zx,integer incx, complex*16, dimension(*) zy, integer incy)

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(*)

Author

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