naginterfaces.library.blas.dnegv

naginterfaces.library.blas.dnegv(x)[source]

dnegv negates a real vector.

For full information please refer to the NAG Library document for f06fg

https://www.nag.com/numeric/nl/nagdoc_28.7/flhtml/f06/f06fgf.html

Parameters
xfloat, array-like, shape

The -element vector .

Returns
xfloat, ndarray, shape

The vector .

Raises
NagValueError
(errno )

On entry, error in parameter .

Constraint: .

Notes

No equivalent traditional C interface for this routine exists in the NAG Library.

dnegv performs the operation

where is an -element real vector.