naginterfaces.library.blas.drscl

naginterfaces.library.blas.drscl(alpha, x)[source]

drscl multiplies a real vector by the reciprocal of a scalar.

For full information please refer to the NAG Library document for f06fe

https://www.nag.com/numeric/nl/nagdoc_28.7/flhtml/f06/f06fef.html

Parameters
alphafloat

The scalar .

xfloat, array-like, shape

The -element vector .

Returns
xfloat, ndarray, shape

The updated vector .

Raises
NagValueError
(errno )

On entry, error in parameter .

Constraint: .

(errno )

On entry, error in parameter .

Constraint: .

Notes

drscl performs the operation

where is an -element real vector and is a real nonzero scalar.