[ Previous | Next | Contents | Glossary | Home | Search ]
AIX Version 4.3 Base Operating System and Extensions Technical Reference, Volume 2

## SSCAL, DSCAL, CSSCAL, CSCAL, ZDSCAL, or ZSCAL Subroutine

### Purpose

Scales a vector by a constant.

### Library

BLAS Library (libblas.a)

### FORTRAN Syntax

```SUBROUTINE SSCAL(N,A,X,INCX)
INTEGER INCX,N
REAL A
REAL X(*)```
```SUBROUTINE DSCAL(N,A,X,INCX)
INTEGER INCX,N
DOUBLE PRECISION A
DOUBLE PRECISION X(*)```
```SUBROUTINE CSSCAL(N,A,X,INCX)
INTEGER INCX,N
REAL A
COMPLEX X(*)```
```SUBROUTINE CSCAL
INTEGER INCX,N
COMPLEX A
COMPLEX X(*)```
```SUBROUTINE ZDSCAL
INTEGER INCX,N
DOUBLE PRECISION A
COMPLEX*16 X(*)```
```SUBROUTINE ZSCAL(
INTEGER INCX,N
COMPLEX*16 A
COMPLEX*16 X(*)```

### Description

The SSCAL, DSCAL, CSSCAL, CSCAL, ZDSCAL, or ZSCAL subroutine scales a vector by a constant:

`X := X * A`

### Parameters

 N On entry, N specifies the number of elements in X and Y; unchanged on exit. A Scaling constant; unchanged on exit. X Vector of dimension at least (1 + (N-1) * abs(INCX) ); on exit, contains the scaled vector. INCX On entry, INCX specifies the increment for the elements of X; INCX must be greater than 0; unchanged on exit.

### Error Codes

For values of N <= 0, the subroutines return immediately.

[ Previous | Next | Contents | Glossary | Home | Search ]