drscl.f man page

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

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).

Sat Nov 16 2013 Version 3.4.2 LAPACK