# DRSCL (3) - Linux Man Pages

drscl.f -

## SYNOPSIS

### Functions/Subroutines

subroutine drscl (N, SA, SX, INCX)
DRSCL multiplies 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