# drscl.f man page

drscl.f —

## Synopsis

### Functions/Subroutines

subroutinedrscl(N, SA, SX, INCX)DRSCLmultiplies a vector by the reciprocal of a real scalar.

## Function/Subroutine Documentation

### subroutine drscl (integerN, double precisionSA, double precision, dimension( * )SX, integerINCX)

**DRSCL** multiplies a vector by the reciprocal of a real scalar.

**Purpose:**

```
DRSCL multiplies an n-element real vector x by the real scalar 1/a.
This is done without overflow or underflow as long as
the final result x/a does not overflow or underflow.
```

**Parameters:**

*N*

```
N is INTEGER
The number of components of the vector x.
```

*SA*

```
SA is DOUBLE PRECISION
The scalar a which is used to divide each component of x.
SA must be >= 0, or the subroutine will divide by zero.
```

*SX*

```
SX is DOUBLE PRECISION array, dimension
(1+(N-1)*abs(INCX))
The n-element vector x.
```

*INCX*

```
INCX is INTEGER
The increment between successive values of the vector SX.
> 0: SX(1) = X(1) and SX(1+(i-1)*INCX) = x(i), 1< i<= n
```

**Author:**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**

September 2012

Definition at line 85 of file drscl.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

drscl(3) is an alias of drscl.f(3).