DRSCL (3) Linux Manual 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

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