scal - Man Page

subroutine cscal (n, ca, cx, incx)
CSCAL
subroutine csscal (n, sa, cx, incx)
CSSCAL
subroutine dscal (n, da, dx, incx)
DSCAL
subroutine sscal (n, sa, sx, incx)
SSCAL
subroutine zdscal (n, da, zx, incx)
ZDSCAL
subroutine zscal (n, za, zx, incx)
ZSCAL

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.

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.

DSCAL

Purpose:

    DSCAL scales a vector by a constant.
    uses unrolled loops for increment equal to 1.

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

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 78 of file dscal.f.

SSCAL

Purpose:

    SSCAL scales a vector by a constant.
    uses unrolled loops for increment equal to 1.

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

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 78 of file sscal.f.

ZDSCAL

Purpose:

    ZDSCAL scales a vector by a constant.

Parameters

N

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

DA

          DA is DOUBLE PRECISION
           On entry, DA 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

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

     jack dongarra, 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 zdscal.f.

ZSCAL

Purpose:

    ZSCAL scales a vector by a constant.

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

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Further Details:

     jack dongarra, 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 zscal.f.