naginterfaces.library.blast.damax_​val

naginterfaces.library.blast.damax_val(x)[source]

damax_val computes, with respect to absolute value, the largest component of a real vector, along with the index of that component.

For full information please refer to the NAG Library document for f16jq

https://www.nag.com/numeric/nl/nagdoc_27.3/flhtml/f16/f16jqf.html

Parameters
xfloat, array-like, shape

The -element vector .

If , must be stored in , for .

If , is not referenced.

Returns
kint

Note: this argument represents an array index; the value returned will be base-1.

, the index, from the set , of the largest component of with respect to absolute value. If on input then is returned as .

rfloat

, the largest component of with respect to absolute value. If on input then is returned as .

Raises
NagValueError
(errno )

On entry, error in parameter .

Constraint: .

Notes

damax_val computes, with respect to absolute value, the largest component, , of an -element real vector , and determines the smallest index, , such that

References

Basic Linear Algebra Subprograms Technical (BLAST) Forum, 2001, Basic Linear Algebra Subprograms Technical (BLAST) Forum Standard, University of Tennessee, Knoxville, Tennessee, https://www.netlib.org/blas/blast-forum/blas-report.pdf