# drscl.f - Man Page

## 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 (integer N, double precision SA, double precision, dimension( * ) SX, integer INCX)

**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:**November 2017

Definition at line 86 of file drscl.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page drscl(3) is an alias of drscl.f(3).

Tue Nov 14 2017 Version 3.8.0 LAPACK